Patent Publication Number: US-11640049-B2

Title: Zoom lens and imaging apparatus

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     The present application is a Continuation of U.S. patent application Ser. No. 17/139,202, filed on Dec. 31, 2020, which is a Continuation of U.S. patent application Ser. No. 16/355,942, filed on Mar. 18, 2019, which claims priority under 35 U.S.C. § 119 to Japanese Patent Application No. 2018-064597, filed on Mar. 29, 2018. The above application is hereby expressly incorporated by reference, in its entirety, into the present application. 
    
    
     BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The present invention relates to a zoom lens and an imaging apparatus. 
     2. Description of the Related Art 
     In the related art, a wide-angle zoom lens is used as an imaging lens such as a digital camera. A configuration in which a first lens group having a negative refractive power, a second lens group having a positive refractive power, and a subsequent lens group are arranged in order from an object side to an image side has been known as a configuration of the wide-angle zoom lens. For example, in JP2016-090748A, JP2013-015621A, JP2015-203735A, and JP2015-138122A, a lens system having the same or similar configuration as or to the aforementioned configuration is described as a lens system considering a wide angle. 
     SUMMARY OF THE INVENTION 
     In recent years, there is an increasing need for a small-size imaging apparatus with a wide angle of view. To meet this need, it is necessary to achieve reduction in size of the first lens group of which a lens diameter is likely to be increased and is closest to the object side likely to be increased in lens diameter, reduction in size of a lens group (hereinafter, referred to as a focusing lens group) which moves during focusing, and reduction in size of the entire lens system including a decrease in movement amount of the focusing lens group. 
     However, in the zoom lens described in JP2016-090748A, a negative lens disposed so as to be closer to the object side within the first lens group is made of a low-dispersion material. Since the low-dispersion material has a low refractive index, an average refractive index of the first lens group becomes low, and thus, it is difficult to achieve the wide angle. For example, in a case where there is an attempt to achieve the wide angle while maintaining a condition in which the low-dispersion material described in JP2016-090748A is used, absolute values of radii of curvature of three negative lenses disposed so as to be close to the object side within the first lens group become small, and thus, aberration occurring in the first lens group is increased. Alternatively, the diameter of the lens constituting the first lens group becomes large. 
     In the zoom lens described in JP2013-015621A, the focusing lens group is disposed so as to be close to the image side within the first lens group. Since the outer diameter and weight of the lens disposed within the first lens group are large, a driving actuator is also large, and thus, the size of the entire imaging apparatus is increased. It is necessary to widen a distance between the focusing lens group and the lens group disposed so as to be close to the object side within the first lens group in order to secure a stroke for focusing, that is, the movement amount of the focusing lens group. However, in a case where this distance is widened, there is a problem that the outer diameter of the lens closest to the object side and the outer diameter of the lens disposed so as to be close to the object side within the first lens group become large. The zoom lens described in JP2013-015621A has also a problem that the movement amount of the focusing lens group is increased due to a low refractive power of the focusing lens group. 
     The zoom lens described in JP2015-203735A has a configuration in which the focusing lens group is disposed so as to be close to the image side within the lens group which is disposed so as to be closest to the object side and is fixed during zooming. The zoom lens described in JP2015-203735A has also a problem that the movement amount of the focusing lens group is increased due to the low refractive power of the focusing lens group. 
     In the zoom lens described in JP2015-138122A, the second lens group is the focusing lens group. However, there is a problem that the movement amount of the focusing lens group is increased due to the low refractive power of the focusing lens group. 
     The present invention has been made in view of the aforementioned circumstances, and an object of the present is to provide a small-size zoom lens having high optical performance while obtaining a wide angle of view and an imaging apparatus comprising the zoom lens. 
     In order to solve the problem, a zoom lens of the present invention consists of, in order from an object side to an image side, a first lens group having a negative refractive power, a second lens group having a positive refractive power, and a subsequent lens group. Mutual distances between the first lens group, the second lens group, and the subsequent lens group change due to movement of at least the first lens group and the second lens group during zooming, a focusing lens group disposed so as to be closer to the image side than the first lens group moves during focusing from an object at infinity from an object within a short range, the first lens group consists of, in order from the object side to the image side, a first-a lens group consisting of three negative lenses, and a first-b lens group including at least one negative lens and at least one positive lens, a distance between the first-a lens group and the first-b lens group does not change either during zooming or during focusing, and assuming that an average value of refractive indices of the three negative lenses of the first-a lens group at a d line is Nd1ave, a focal length of the focusing lens group is ff, and a focal length of the first lens group is f1, Conditional Expressions (1) and (2) are satisfied.
 
1.73&lt;Nd1ave&lt;1.95  (1)
 
1&lt;lff/f1l&lt;3  (2)
 
     In the zoom lens of the present invention, it is preferable that the focusing lens group consists of three or more lenses. 
     In the zoom lens of the present invention, it is preferable that assuming that a transverse magnification of the focusing lens group in a state in which the object at infinity at a wide-angle end is in focus is βfw, a combined transverse magnification of all the lenses closer to the image side than the focusing lens group in a state in which the object at infinity at the wide-angle end is in focus is βrw, and the βrw is 1 in a case where there is no lens disposed so as to be closer to the image side than the focusing lens group, Conditional Expression (3) is satisfied.
 
0.6&lt;|(1−β fw   2 )×β rw   2 |&lt;2.3  (3)
 
     In the zoom lens of the present invention, it is preferable that the subsequent lens group includes a lens group which moves by changing a distance from the adjacent lens group during zooming and has a negative refractive power. 
     In the zoom lens of the present invention, it is preferable that the focusing lens group is a part of the subsequent lens group or the entire subsequent lens group. It is preferable that the focusing lens group has a negative refractive power. 
     In the zoom lens of the present invention, it is preferable that assuming that a minimum value of the refractive indices of the three negative lenses of the first-a lens group at the d line is Nd1amin, Conditional Expression (4) is satisfied.
 
1.52&lt;Nd1amin&lt;1.89  (4)
 
     In the zoom lens of the present invention, it is preferable that assuming that an Abbe number of at least one lens included in the focusing lens group with the d line as a reference is vdf, Conditional Expression (5) is satisfied.
 
60&lt;df  (5)
 
     In the zoom lens of the present invention, it is preferable that assuming that an Abbe number of at least one negative lens included in the first-b lens group with the d line as a reference is vd1bn, Conditional Expression (6) is satisfied.
 
60&lt;vd1bn  (6)
 
     In the zoom lens of the present invention, it is preferable that assuming that a refractive index of the lens disposed so as to be closest to the object side at the d line is Nd1, Conditional Expression (7) is satisfied.
 
1.7&lt;Nd1&lt;2.1  (7)
 
     In the zoom lens of the present invention, it is preferable that assuming that an on-axis air-equivalent distance from a lens surface closest to the image side to an image plane in a state in which the object at infinity at the wide-angle end is in focus is BFw, a focal length of the zoom lens in a state in which the object at infinity at the wide-angle end is in focus is fw, and a maximum half-angle of view in a state in which the object at infinity at the wide-angle end is in focus is ωw, Conditional Expression (8) is satisfied.
 
0.5&lt; BFw /( fw ×tan ω w )&lt;1.5  (8)
 
     In the zoom lens of the present invention, it is preferable that assuming that a maximum half-angle of view in a state in which the object at infinity at the wide-angle end is in focus is ww and an open F number at the wide-angle end is FNow, Conditional Expression (9) is satisfied.
 
0.45&lt;tan ω w/FNow &lt;1  (9)
 
     In the zoom lens of the present invention, it is preferable that assuming that a radius of curvature of an object-side lens surface of the lens disposed so as to be closest to the object side is R1 and a radius of curvature of an image-side lens surface of the lens disposed so as to be closest to the object side is R2, Conditional Expression (10) is satisfied.
 
3.3&lt;( R 1+ R 2)/( R 1− R 2)&lt;5.5  (10)
 
     In the zoom lens of the present invention, it is preferable that assuming that the focal length of the first lens group is f1 and a focal length of the second lens group is f2, Conditional Expression (11) is satisfied.
 
0.2&lt; |f 1 /f 2 |&lt;0.65  (11)
 
     In the zoom lens of the present invention, it is preferable that assuming that a focal length of the first-a lens group is f1a and a focal length of the first-b lens group is f1b, Conditional Expression (12) is satisfied.
 
0.02&lt; |f 1 a/f 1 b| &lt;0.15  (12)
 
     In the zoom lens of the present invention, it is preferable that the subsequent lens group includes a lens group closest to the image side, of which a distance from the adjacent lens group changes during zooming, and which has a positive refractive power. 
     In the zoom lens of the present invention, it is preferable that the lens group closest to the image side and has the positive refractive power within the subsequent lens group is fixed with respect to an image plane during zooming and during focusing. 
     In the zoom lens of the present invention, it is preferable that the subsequent lens group consists of an intermediate lens group which consists of one or two lens groups and has a positive refractive power as a whole, the focusing lens group having a negative refractive power, and a lens group having a positive refractive power in order from the object side to the image side, and a distance of each of the one or two lens groups within the intermediate lens group, the focusing lens group, and the lens group which is disposed so as to be closest to the image side and has the positive refractive power from the adjacent lens group changes during zooming. 
     In the zoom lens of the present invention, it is preferable that the first-b lens group is composed of two lenses consisting of a negative lens and a positive lens in order from the object side to the image side. 
     An imaging apparatus according to the present embodiment comprises the zoom lens according to the present invention. 
     In the present description, it should be noted that the terms “consisting of ˜” and “consists of ˜” mean that the imaging lens may include not only the above-mentioned elements but also lenses substantially having no refractive power, optical elements, which are not lenses, such as a stop, a filter, and a cover glass, and mechanism parts such as a lens flange, a lens barrel, an imaging element, and a camera shake correction mechanism in addition to the illustrated constituent elements. 
     In the present description, the term “˜ group that has a positive refractive power” means that the group has a positive refractive power as a whole. Likewise, the term “˜ group that has a negative refractive power” means that the group has a negative refractive power as a whole. The “lens having a positive refractive power” and the “positive lens” are synonymous. The “lens having a negative refractive power” and the “negative lens” are synonymous. The “lens group” is not limited to a configuration consisting of a plurality of lenses, and may consist of only one lens. It is assumed that a reference sign of a refractive power related to a lens including an aspherical surface, a surface shape of a lens surface, and a radius of curvature are considered in paraxial region unless otherwise noted. As a reference sign of a radius of curvature, a reference sign of a radius curvature of a surface having a shape in which a convex surface faces the object side is set to be positive, and a reference sign of a radius of curvature of a surface having a shape in which a convex surface faces the image side is set to be negative. The “focal length” used in Conditional Expressions is a paraxial focal length. The values in Conditional Expressions are values in a case where the d line is used as the reference. The “d line”, “C line”, “F line”, and “g line” described in the present specification are bright lines. A wavelength of the d line is 587.56 nm (nanometers), a wavelength of the C line is 656.27 nm (nanometers), a wavelength of the F line is 486.13 nm (nanometers), and a wavelength of the g line is 435.84 nm (nanometers). 
     According to the present invention, it is possible to provide a small-size zoom lens having high optical performance while obtaining a wide angle of view and an imaging apparatus comprising the zoom lens. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG.  1    is a diagram showing an optical path and a cross section of a lens configuration of a zoom lens according to an embodiment of the present invention, and a movement locus. 
         FIG.  2    is a diagram showing cross sections of lens configurations of a zoom lens according to Example 1 of the present invention at a wide-angle end and at a telephoto end and movement loci. 
         FIG.  3    is a diagram showing cross sections of lens configurations of a zoom lens according to Example 2 of the present invention at the wide-angle end and at the telephoto end and movement loci. 
         FIG.  4    is a diagram showing cross sections of lens configurations of a zoom lens according to Example 3 of the present invention at the wide-angle end and at the telephoto end and movement loci. 
         FIG.  5    is a diagram showing cross sections of lens configurations of a zoom lens according to Example 4 of the present invention at the wide-angle end and at the telephoto end and movement loci. 
         FIG.  6    is a diagram showing cross sections of lens configurations of a zoom lens according to Example 5 of the present invention at the wide-angle end and at the telephoto end and movement loci. 
         FIG.  7    is a diagram showing cross sections of lens configurations of a zoom lens according to Example 6 of the present invention at the wide-angle end and at the telephoto end and movement loci. 
         FIG.  8    is a diagram showing cross sections of lens configurations of a zoom lens according to Example 7 of the present invention at the wide-angle end and at the telephoto end and movement loci. 
         FIG.  9    is a diagram showing cross sections of lens configurations of a zoom lens according to Example 8 of the present invention at the wide-angle end and at the telephoto end and movement loci. 
         FIG.  10    is a diagram showing cross sections of lens configurations of a zoom lens according to Example 9 of the present invention at the wide-angle end and at the telephoto end and movement loci. 
         FIG.  11    is a diagram showing cross sections of lens configurations of a zoom lens according to Example 10 of the present invention at the wide-angle end and at the telephoto end and movement loci. 
         FIG.  12    is a diagram showing cross sections of lens configurations of a zoom lens according to Example 11 of the present invention at the wide-angle end and at the telephoto end and movement loci. 
         FIG.  13    shows aberration diagrams of the zoom lens according to Example 1 of the present invention. 
         FIG.  14    shows aberration diagrams of the zoom lens according to Example 2 of the present invention. 
         FIG.  15    shows aberration diagrams of the zoom lens according to Example 3 of the present invention. 
         FIG.  16    shows aberration diagrams of the zoom lens according to Example 4 of the present invention. 
         FIG.  17    shows aberration diagrams of the zoom lens according to Example 5 of the present invention. 
         FIG.  18    shows aberration diagrams of the zoom lens according to Example 6 of the present invention. 
         FIG.  19    shows aberration diagrams of the zoom lens according to Example 7 of the present invention. 
         FIG.  20    shows aberration diagrams of the zoom lens according to Example 8 of the present invention. 
         FIG.  21    shows aberration diagrams of the zoom lens according to Example 9 of the present invention. 
         FIG.  22    shows aberration diagrams of the zoom lens according to Example 10 of the present invention. 
         FIG.  23    shows aberration diagrams of the zoom lens according to Example 11 of the present invention. 
         FIG.  24    is a perspective view of an imaging apparatus according to the embodiment of the present invention when viewed from a front side. 
         FIG.  25    is a perspective view of the imaging apparatus according to the embodiment of the present invention when viewed from a rear side. 
     
    
    
     DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     Hereinafter, embodiments of the present invention will be described with reference to drawings.  FIG.  1    shows an optical path and a cross-sectional view at a wide-angle end of a zoom lens according to an embodiment of the present invention. The example shown in  FIG.  1    corresponds to the zoom lens according to Example 1 to be described later.  FIG.  1    shows a state where an object at infinity is in focus, where the left side of the drawing is an object side and the right side of the drawing is an image side, and shows on-axis rays  2  and maximum-view-angle rays  3  for the optical path. 
     In  FIG.  1   , it is assumed that the zoom lens is applied to the imaging apparatus, and an example in which an optical member PP having an incident surface and an exit surface parallel to each other is disposed between the zoom lens and an image plane Sim is illustrated. The optical member PP is a member assumed to include various filters and/or a cover glass. The various filters are, for example, a low-pass filter, an infrared cut filter, and a filter for cutting a specific wavelength range. The optical member PP is a member having no refractive power, and the optical member PP may be omitted. 
     The zoom lens according to the present embodiment consists of a first lens group G 1  having a negative refractive power, a second lens group G 2  having a positive refractive power, and a subsequent lens group GR in order from the object side to the image side along an optical axis Z. During zooming from the wide-angle end to a telephoto end, at least the first lens group G 1  and the second lens group G 2  move, and thus, mutual distances between the first lens group G 1 , the second lens group G 2 , and the subsequent lens group GR in an optical axis direction change. 
     For example, the subsequent lens group GR of  FIG.  1    is composed of three lens groups consisting of the third lens group G 3 , the fourth lens group G 4 , and the fifth lens group G 5  in order from the object side to the image side. The mutual distances between the third lens group G 3 , the fourth lens group G 4 , and the fifth lens group G 5  in the optical axis direction change during zooming. In the example of  FIG.  1   , during zooming, the first lens group G 1 , the second lens group G 2 , the third lens group G 3 , and the fourth lens group G 4  move, and the fifth lens group G 5  is fixed with respect to the image plane Sim. In  FIG.  1   , under each lens group moving during zooming, a schematic movement locus of each lens group during zooming from the wide-angle end to the telephoto end is represented by an arrow, a ground symbol is represented under the fifth lens group G 5 . 
     For example,  FIG.  1    shows a configuration in which an aperture stop St is disposed on a surface of the second lens group G 2  closest to the object side. There are advantages in achieving a wide angle and reducing a diameter of a lens system by disposing the aperture stop St in this manner. 
     In the zoom lens according to the present embodiment, a focusing lens group Gf disposed so as to be closer to the image side than the first lens group G 1  moves during focusing from an object at infinity to an object within a short range. In the example shown in  FIG.  1   , only the focusing lens group Gf moves during focusing. Focusing is performed by the lens group closer to the image side than the first lens group G 1 , and thus, it is easy to construct the focusing lens group Gf with a small size and a light weight. Accordingly, there is an advantage in increasing an autofocusing speed. 
     It is preferable that the focusing lens group Gf is a part of the subsequent lens group GR or the entire subsequent lens group GR in view of the following circumstances. As stated above, it is preferable that the focusing lens group Gf is disposed so as to be closer to the image side than the first lens group G 1  in order to construct the focusing lens group Gf with a small size and a light weight such that the autofocusing speed can be increased. As for a positional relationship between the focusing lens group Gf and the second lens group G 2 , it is considered that the focusing lens group Gf is a part of the second lens group G 2  or the entire second lens group G 2 . However, it is not preferable that a change in angle of view and a change in distortion become large along with the movement of the focusing lens group Gf in such a case. In a case where the change in angle of view and the change in distortion are large along with the movement of the focusing lens group Gf, there is a problem that a photographer feels these changes to be obstacles to view during a focusing operation and a wobbling operation. From the above, it is preferable that the focusing lens group Gf is disposed within the subsequent lens group GR. 
     For example, the entire fourth lens group G 4  is the focusing lens group Gf in the zoom lens shown in  FIG.  1   . An arrow pointing an image-side direction under the fourth lens group G 4  of  FIG.  1    means that the fourth lens group G 4  moves toward the image side during focusing from the object at infinity to the object within the short range. 
     It is preferable that the focusing lens group Gf has a negative refractive power. As stated above, it is preferable that the focusing lens group Gf is disposed so as to be closer to the image side than the first lens group G 1 , that is, between an object-side surface of the second lens group G 2  closest to the object side and an image-side surface of the lens group closest to the image side in order to reduce the size of the focusing lens group Gf. Since a refractive power of a synthetic optical system is a positive value from the second lens group G 2  to the lens group closest to the image side, the refractive power of the focusing lens group Gf can be increased by using the lens group having a negative refractive power of a different sign as the focusing lens group Gf, as opposed to using the lens group having the positive refractive power which is acquired by dividing the refractive power of the synthetic optical system as the focusing lens group Gf. Since the focusing lens group Gf has a high refractive power, it is possible to decrease a movement amount of the focusing lens group Gf, and it is possible to reduce the size of the entire lens system. 
     It is preferable that the focusing lens group Gf consists of three or more lenses. The focusing lens group Gf is composed of three or more lenses, and thus, it is possible to decrease a variation in aberration during focusing. For example, the focusing lens group Gf may consist of two positive lenses and two negative lenses. In this case, the focusing lens group Gf may consist of a positive lens, a negative lens, a positive lens, and a negative lens in order from the object side to the image side. In this case, three lenses on the image side may be joined together. More specifically, the focusing lens group Gf may consist of a positive meniscus lens of which a concave surface faces the object side, a negative lens of which a concave surface faces the image side, a positive lens, and a negative lens in order from the object side to the image side. Alternatively, the focusing lens group Gf may consist of two positive lenses and one negative lens. In this case, the focusing lens group Gf may consist of a positive lens, a negative lens, and a positive lens in order from the object side to the image side. In this case, two lenses on the image side may be joined together. 
     The first lens group G 1  consists of a first-a lens group G 1   a  and a first-b lens group G 1   b  in order from the object side to the image side. A distance between the first-a lens group G 1   a  and the first-b lens group G 1   b  in the optical axis direction does not change either during zooming or during focusing. In a case where the distance between these two lens groups within the first lens group G 1  changes, an actuator for driving at least one lens group and a wide distance for moving at least one lens group are required. Accordingly, the distance between the first-a lens group G 1   a  and the first-b lens group G 1   b  does not change during zooming and during focusing, and thus, there is an advantage in reducing the size of the lens group. 
     The first-a lens group G 1   a  consists of three negative lenses. The first-a lens group G 1   a  disposed on the object side within the first lens group G 1  consists of only the negative lens, and thus, it is easy to prevent the lens diameter of the first lens group G 1  from being increased even in a case where the wide angle of the lens group is achieved. It is possible to favorably correct off-axis aberration by using three negative lenses as the first-a lens group G 1   a . For example, the first-a lens group Gla consists of three negative meniscus lens of which convex surfaces face the object side, and there is an advantage in achieving the wide angle while correcting the off-axis aberration in such a case. 
     The first-b lens group G 1   b  has at least one negative lens and at least one positive lens. As in the present embodiment, since on-axis ray height passing through the first lens group G 1  on a wide-angle side is low and the on-axis ray height becomes high as the lens group becomes close to a telephoto side in the zoom lens comprising the first lens group G 1  having the negative refractive power and the second lens group G 2  having the positive refractive power, a variation in chromatic aberration along with zooming is easy to be large. Thus, the first-b lens group G 1   b  which includes at least one negative lens and at least one positive lens on the image side on which the on-axis ray height becomes higher and has an achromatic effect is disposed within the first lens group G 1 . In this configuration, it is possible to decrease a change in longitudinal chromatic aberration along with zooming. 
     More specifically, it is preferable that the first-b lens group G 1   b  is composed of two lenses consisting of a negative lens and a positive lens in order from the object side to the image side. In such a configuration, the negative refractive power is concentrated on the object side within the first lens group G 1 , and thus, it is possible to decrease the diameter of the lens disposed so as to be closest to the object side. The first-b lens group G 1   b  consists of only two lenses, and thus, it is possible to reduce the size and weight thereof. For example, the first-b lens group G 1   b  can consist of a biconcave lens and a positive lens of which a convex surface faces the object side. The negative lens and the positive lens included in the first-b lens group G 1   b  may be joined together or may not be joined together. 
     Assuming that an average value of refractive indices of three negative lenses of the first-a lens group G 1   a  at a d line is Nd1ave, the zoom lens according to the present embodiment satisfies the following Conditional Expression (1). Conditional Expression (1) assumes an average refractive index of the three lenses disposed in the first-a lens group G 1   a . The resultant value is not equal to or less than a lower limit of Conditional Expression (1). Thus, since an absolute value of a radius of curvature of the negative lens disposed in the first-a lens group G 1   a  does not become too small even in a case where the wide angle is achieved, it is possible to restrain an increase in off-axis aberration. Alternatively, the resultant value is not equal to or less than the lower limit of Conditional Expression (1), it is possible to restrain an increase in lens diameter of the first-a lens group G 1   a  even in a case where the wide angle is achieved. The resultant value is not equal to or greater than an upper limit of Conditional Expression (1), and thus, it is possible to restrain a dispersion of the negative lens of the first-a lens group G 1   a  from being too large, particularly, there is an advantage in correcting lateral chromatic aberration on the wide-angle side. It is possible to obtain more favorable characteristics in a case where the zoom lens satisfies the following Conditional Expression (1-1), and it is possible to obtain still more favorable characteristics in a case where the zoom lens satisfies the following Conditional Expression (1-2).
 
1.73&lt;Nd1ave&lt;1.95  (1)
 
1.75&lt;Nd1ave&lt;1.93  (1-1)
 
1.77&lt;Nd1ave&lt;1.91  (1-2)
 
     Assuming that a focal length of the focusing lens group Gf is ff and a focal length of the first lens group G 1  is f1, the zoom lens according to the present embodiment satisfies the following Conditional Expression (2). Conditional Expression (2) assumes the relationship between the focal length of the focusing lens group Gf and the focal length of the first lens group G 1 . The resultant value is not equal to or less than a lower limit of Conditional Expression (2), and thus, the refractive power of the first lens group G 1  does not become too low. Accordingly, there is an advantage in restraining the increase in lens diameter of the first lens group G 1  or decreasing the movement amount of the first lens group G 1  along with zooming. Alternatively, the resultant value is not equal to or less than the lower limit of Conditional Expression (2), and thus, the refractive power of the focusing lens group Gf does not become too high. Accordingly, it is possible to restrain an increase in field curvature or it is possible to restrain a variation in field curvature along with the movement of the focusing lens group Gf. The resultant value is not equal to or greater than an upper limit of Conditional Expression (2), and thus, the refractive power of the first lens group G 1  does not become too high, it is easy to correct distortion and astigmatism. Alternatively, the resultant value is not equal to or greater than the upper limit of Conditional Expression (2), and thus, the refractive power of the focusing lens group Gf does not become too low. Accordingly, it is possible to decrease the movement amount of the focusing lens group Gf during focusing. It is possible to obtain more favorable characteristics in a case where the zoom lens satisfies the following Conditional Expression (2-1), and it is possible to obtain still more favorable characteristics in a case where the zoom lens satisfies the following Conditional Expression (2-2).
 
1&lt; |ff/f 1|&lt;3  (2)
 
1.1&lt; |ff/f 1|&lt;2.9  (2-1)
 
1.2&lt;/ |ff/f 1|&lt;2.3  (2-2)
 
     It is preferable that the zoom lens according to the present embodiment satisfies the following conditional expressions. Assuming that a transverse magnification of the focusing lens group Gf in a state in which an object at infinity at the wide-angle end is in focus is βfw, a combined transverse magnification of all the lenses closer to the image side than the focusing lens group Gf in a state in which the object at infinity at the wide-angle end is in focus is βrw, and βrw is 1 in a case where the lenses are not disposed so as to be closer to the image side than the focusing lens group Gf, it is preferable that the zoom lens satisfies the following Conditional Expression (3). Conditional Expression (3) assumes a focus movement amount with respect to the movement amount of the focusing lens group Gf. The resultant value is not equal to or less than a lower limit of Conditional Expression (3), and thus, it is possible to decrease the movement amount of the focusing lens group Gf during focusing. Accordingly, there is an advantage in reducing the entire length of the lens system. Alternatively, the resultant value is not equal to or less than the lower limit of Conditional Expression (3), it is possible to reduce the shortest imaging distance. The resultant value is not equal to or greater than an upper limit of Conditional Expression (3), and thus, the refractive power of the focusing lens group Gf does not become too high. Accordingly, it is possible to restrain various aberrations occurring in the focusing lens group Gf. It is possible to obtain more favorable characteristics in a case where the zoom lens satisfies the following Conditional Expression (3-1), and it is possible to obtain still more favorable characteristics in a case where the zoom lens satisfies the following Conditional Expression (3-2).
 
0.6&lt;|(1 −βfw   2 )×β rw   2 |&lt;2.3  (3)
 
0.8&lt;|(1 −βfw   2 )×β rw   2 |&lt;2.1  (3-1)
 
1.1&lt;|(1 −βfw   2 )×β rw   2 |&lt;1.9  (3-2)
 
     Assuming that a minimum value of the refractive indices of the three negative lenses of the first-a lens group G 1   a  at the d line is Nd1amin, it is preferable that the zoom lens satisfies Conditional Expression (4). Conditional Expression (4) assumes the minimum refractive index of the negative lenses disposed in the first-a lens group G 1   a . It is considered that a material having a low dispersion is used for the negative lens disposed in the first-a lens group G 1   a  in order to correct the lateral chromatic aberration on the wide-angle side, but such a material has a low refractive index. In a case where the lens is made of the material having the low refractive index, an absolute value of the radius of curvature is small, and thus, there is a problem that the increase in off-axis aberration and/or the increase in the lens diameter. The resultant value is not equal to or less than a lower limit of Conditional Expression (4), and thus, it is possible to avoid such a problem. The resultant value is not equal to or greater than an upper limit of Conditional Expression (4), and thus, the dispersion of the negative lenses of the first-a lens group G 1   a  does not become too large. Accordingly, it is easy to particularly correct the lateral chromatic aberration at the wide-angle end. It is possible to obtain more favorable characteristics in a case where the zoom lens satisfies the following Conditional Expression (4-1), and it is possible to obtain still more favorable characteristics in a case where the zoom lens satisfies the following Conditional Expression (4-2).
 
1.52&lt;Nd1amin&lt;1.89  (4)
 
1.56&lt;Nd1amin&lt;1.86  (4-1)
 
     Assuming that an Abbe number of at least one lens included in the focusing lens group Gf with the d line as a reference is vdf, it is preferable that the zoom lens satisfies the following Conditional Expression (5). That is, it is preferable that the focusing lens group Gf has at least one lens satisfying Conditional Expression (5). Conditional Expression (5) assumes the Abbe number of at least one lens disposed in the focusing lens group Gf. The resultant value is not equal to or less than a lower limit of Conditional Expression (5), and thus, it is possible to restrain the variation in chromatic aberration during focusing. It is preferable that the zoom lens satisfies the following Conditional Expression (5-1). The resultant value is not equal to or less than the lower limit of Conditional Expression (5-1), and thus, it is possible to increase an effect related to Conditional Expression (5). The resultant value is not equal to or greater than an upper limit of Conditional Expression (5-1), and thus, it is possible to secure a necessary refractive index. Accordingly, it is possible to favorably correct spherical aberration and astigmatism. In a case where the zoom lens satisfies the following Conditional Expression (5-2), it is possible to obtain more favorable characteristics.
 
60&lt;vdf  (5)
 
64&lt;vdf&lt;98  (5-1)
 
68&lt;vdf&lt;85  (5-2)
 
     Assuming that an Abee number of at least one negative lens included in the first-b lens group G 1   b  with the d line as the reference is vd1bn, it is preferable that the zoom lens satisfies the following Conditional Expression (6). That is, it is preferable that the first-b lens group G 1   b  has at least one negative lens satisfying Conditional Expression (6). Conditional Expression (6) assumes the Abbe number of at least one negative lens disposed in the first-b lens group G 1   b . The resultant value is not equal to or less than a lower limit of Conditional Expression (6), and thus, it is possible to restrain the variation in longitudinal chromatic aberration during zooming. Alternatively, the resultant value is not equal to or less than the lower limit of Conditional Expression (6), and thus, it is possible to favorably correct the lateral chromatic aberration on the wide-angle side. It is preferable that the zoom lens satisfies the following Conditional Expression (6-1). The resultant value is not equal to or less than a lower limit of Conditional Expression (6-1), and thus, it is possible to increase an effect related to Conditional Expression (6). The resultant value is not equal to or greater than an upper limit of Conditional Expression (6-1), and thus, it is possible to secure a necessary refractive index. Accordingly, it is possible to favorably correct various aberrations such as spherical aberration. In a case where the zoom lens satisfies the following Conditional Expression (6-2), it is possible to still more favorable characteristics.
 
60&lt;vd1bn  (6)
 
66&lt;vd1bn&lt;100  (6-1)
 
68&lt;vd1bn&lt;98  (6-2)
 
     Assuming that the refractive index of the lens disposed so as to be closest to the object side at the d line is Nd1, it is preferable that the zoom lens satisfies the following Conditional Expression (7). Conditional Expression (7) assumes the refractive index of the material used for the lens closest to the object side. The resultant value is not equal to or less than a lower limit of Conditional Expression (7), and thus, it is easy to reduce the size of the lens closest to the object side and decrease the entire size of the first lens group G 1 . The resultant value is not equal to or greater than an upper limit of Conditional Expression (7), and thus, it is easy to correct the field curvature. Alternatively, the resultant value is not equal to or greater than the upper limit of Conditional Expression (7), and thus, it is easy to construct the lens closest to the object side without using a material having a large dispersion. Accordingly, it is easy to favorably correct the lateral chromatic aberration.
 
1.7&lt;Nd1&lt;2.1  (7)
 
     Assuming that an on-axis air-equivalent distance from a lens surface closest to the image side to the image plane Sim in a state in which the object at infinity at the wide-angle end is in focus is BFw, a focal length of the zoom lens in a state in which the object at infinity at the wide-angle end is in focus is fw, and the maximum half-angle of view in a state in which the object at infinity at the wide-angle end is in focus is ωw, it is preferable that the zoom lens satisfies the following Conditional Expression (8). In the example shown in  FIG.  1   , ωw corresponds to an angle formed by the optical axis Z and the principal ray with the maximum angle of view on the object side than the lens closest to the object side. In  FIG.  1   , the principal ray with the maximum angle of view is represented by a dash-dotted line within the maximum-view-angle rays 3. Conditional Expression (8) assumes the relationship between the air-equivalent distance from the lens surface closest to the image side at the wide-angle end to the image plane Sim, that is, back focus, a focal length at the wide-angle end, and a half angle of view at the wide-angle end. The resultant value is not equal to or less than a lower limit of Conditional Expression (8), and thus, it is easy to secure necessary back focus for each interchangeable-lens camera. The resultant value is not equal to or less than the lower limit of Conditional Expression (8), and thus, it is easy to secure the refractive power of the first lens group G 1  or it is easy to narrow a distance between the first lens group G 1  and the second lens group G 2  at the wide-angle end. Accordingly, it is easy to reduce the size of the first lens group G 1 . The resultant value is not equal to or greater than an upper limit of Conditional Expression (8), and thus, the back focus does not become too long. Accordingly, it is possible to widen a range in which the lens can be disposed, and it is easy to provide the necessary number of lenses for securing favorable optical performance. In a case where the back focus is long, it is necessary to increase the refractive power of the first lens group G 1  in order to secure the long back focus. However, the resultant value is not equal to or greater than the upper limit of Conditional Expression (8), and thus, the back focus does not become too long. Accordingly, it is not necessary to increase the refractive power of the first lens group G 1 . As a result, it is easy to particularly correct the astigmatism on the telephoto side. In a case where the zoom lens satisfies the following Conditional Expression (8-1), it is possible to obtain more favorable characteristics.
 
0.5&lt; BFw /( fw ×tan ω w )&lt;1.5  (8)
 
0.6&lt; BFw /( fw ×tan ω w )&lt;1.3  (8-1)
 
     Assuming that the maximum half-angle of view in a state in which the object at infinity at the wide-angle end is in focus is ww and an open F number at the wide-angle end is FNow, it is preferable that the zoom lens satisfies the following Conditional Expression (9). Conditional Expression (9) assumes the relationship between the maximum half-angle of view and the open F number at the wide-angle end. The resultant value is not equal to or less than a lower limit of Conditional Expression (9), and thus, it is possible to widen the angle of view at the wide-angle end or it is possible to decrease the open F number. Accordingly, it is possible to cope with a wide range of applications, and it is possible to achieve a high-value wide-angle zoom lens. The resultant value is not equal to or greater than an upper limit of Conditional Expression (9), and thus, it is easy to restrain an increase in number of lenses and it is easy to restrain an increase in size of the lens system while acquiring favorable optical performance. In a case where the zoom lens satisfies the following Conditional Expression (9-1), it is possible to obtain more favorable characteristics.
 
0.45&lt;tan ω w/FNow &lt;1  (9)
 
0.46&lt;tan ω w/FNow &lt;0.8  (9-1)
 
     Assuming that a radius of curvature of an object-side lens surface of the lens disposed so as to be closest to the object side is R1 and a radius of curvature of an image-side lens surface of the lens disposed so as to be closest to the object side is R2, it is preferable that the zoom lens satisfies the following Conditional Expression (10). Conditional Expression (10) assumes the relationship between the radius of curvature of the object-side surface and the radius of curvature of the image-side surface of the lens disposed so as to be closest to the object side, that is, a shape factor of the lens. The resultant value is not equal to or less than a lower limit of Conditional Expression (10), and thus, it is easy to correct the astigmatism on the telephoto side. The resultant value is not equal to or greater than an upper limit of Conditional Expression (10), and thus, it is easy to favorably correct the spherical aberration on the telephoto side. The resultant value is not equal to or greater than the upper limit of Conditional Expression (10), and thus, the refractive power of the lens disposed so as to be closest to the object side does not become too low. Accordingly, it is easy to achieve the wide angle. In a case where the zoom lens satisfies the following Conditional Expression (10-1), it is possible to obtain more favorable characteristics.
 
3.3&lt;( R 1+ R 2)/( R 1− R 2)&lt;5.5  (10)
 
3.3&lt;( R 1+ R 2)/( R 1− R 2)&lt;5  (10-1)
 
     Assuming that the focal length of the first lens group G 1  is f1 and a focal length of the second lens group G 2  is f2, it is preferable that the zoom lens satisfies the following Conditional Expression (11). Conditional Expression (11) assumes the relationship between the focal lengths of the first lens group G 1  and the second lens group G 2 . The resultant value is not equal to or less than a lower limit of Conditional Expression (11), and thus, the refractive power of the first lens group G 1  does not become too high. Accordingly, it is easy to correct the distortion and the astigmatism. Alternatively, Conditional Expression (11) is not equal to or less than the lower limit, and thus, the refractive power of the second lens group G 2  does not become too low. Accordingly, it is easy to particularly correct the spherical aberration on the telephoto side. The resultant value is not equal to or greater than an upper limit of Conditional Expression (11), and thus, the refractive power of the first lens group G 1  does not become too low. Accordingly, it is possible to restrain the increase in size of the first lens group G 1  or restrain the movement amount of the first lens group G 1  during zooming. Alternatively, the resultant value is not equal to or greater than the upper limit of Conditional Expression (11), and thus, the refractive power of the second lens group G 2  does not become too high. Accordingly, it is easy to particularly correct the field curvature on the wide-angle side. In a case where the zoom lens satisfies the following Conditional Expression (11-1), it is possible to obtain more favorable characteristics.
 
0.2&lt; |f 1/ f 2|&lt;0.65  (11)
 
0.25&lt; |f 1/ f 2|&lt;0.63  (11-1)
 
     Assuming that a focal length of the first-a lens group G 1   a  is f1a, a focal length of the first-b lens group G 1   b  is f1b, it is preferable that the zoom lens satisfies the following Conditional Expression (12). Conditional Expression (12) assumes the relationship between the focal length of the first-a lens group G 1   a  and the focal length of the first-b lens group G 1   b . The resultant value is not equal to or less than a lower limit of Conditional Expression (12), and thus, a refractive power of the first-b lens group G 1   b  does not become too low. Accordingly, it is easy to correct the distortion. The resultant value is not equal to or greater than an upper limit of Conditional Expression (12), and thus, the refractive power of the first-b lens group G 1   b  does not become too high. Accordingly, it is easy to decrease the diameter of the lens disposed so as to be closest to the object side. It is possible to obtain more favorable characteristics in a case where the zoom lens satisfies the following Conditional Expression (12-1), and it is possible to obtain still more favorable characteristics in a case where the zoom lens satisfies the following Conditional Expression (12-2).
 
0.02&lt; |f 1 a/f 1 b| &lt;0.15  (12)
 
0.03&lt; |f 1 a/f 1 b| &lt;0.12  (12-1)
 
0.04&lt; |f 1 a/f 1 b| &lt;0.1  (12-2)
 
     Next, the subsequent lens group GR will be described. It is preferable that the subsequent lens group GR includes a lens group which moves by changing a distance from the adjacent lens group during zooming and has a negative refractive power. The second lens group G 2  is disposed so as to be adjacent to the subsequent lens group GR, and a lens group having a refractive power of a sign different from the sign of the refractive power of the second lens group G 2  is disposed within the subsequent lens group. Thus, it is possible to improve a zooming effect. The lens groups each having a negative refractive power are provided on the object side and the image side of the second lens group G 2 , and thus, there is an advantage in correcting the off-axis aberration. 
     It is preferable that the subsequent lens group GR includes a lens group closest to the image side, of which a distance from the adjacent lens group changes during zooming, and which has a positive refractive power. In the wide-angle zoom lens, an incidence angle of the principal ray with the maximum angle of view on the image plane Sim is easy to be particularly large at the wide-angle end. The lens group having the positive refractive power is disposed in the position closest to the image side, and thus, it is easy to decrease the incidence angle of the principal ray with the maximum angle of view on the image plane Sim. 
     In a case where the subsequent lens group GR includes the lens group closest to the image side and has the positive refractive power, it is preferable that the lens group closest to the image side and has the positive refractive power is fixed with respect to the image plane Sim during zooming and during focusing. The lens group in the position closest to the image side is fixed, and thus, it is possible to restrain dust from entering the zoom lens. 
     It is preferable that the lens group closest to the image side and has the positive refractive power within the subsequent lens group GR is fixed with respect to the image plane Sim during zooming and during focusing and consists of one lens. Since a diameter of a ray passing through the lens group disposed so as to be closest to the image side becomes small, the burden of aberration correction is not large, and thus, it is preferable that this lens group is composed of a small number of lenses. The lens group disposed so as to be closest to the image side is composed of only one lens, and thus, there is an advantage in reducing the size thereof. 
     It is preferable that the subsequent lens group GR consists of an intermediate lens group Gm which consists of one or two lens groups and has a positive refractive power as a whole, a focusing lens group Gf having a negative refractive power, and a lens group having a positive refractive power in order from the object side to the image side. In the example shown in  FIG.  1   , the third lens group G 3  corresponds to the intermediate lens group Gm. Each of the one or two lens groups within the intermediate lens group Gm, the focusing lens group Gf, and the lens group which is disposed in the position closest to the image side and has the positive refractive power is a lens group of which the distance from the adjacent lens group change during zooming. That is, it is preferable that the zoom lens according to the present embodiment consists of the first lens group G 1  having the negative refractive power, the second lens group G 2  having the positive refractive power, the intermediate lens group Gm, the focusing lens group Gf having the negative refractive power, and the lens group having the positive refractive power in order from the object side to the image side. The zoom lens has five to six lens groups in which the mutual distances therebetween change during zooming, and thus, it is possible to favorably correct aberration in the entire zoom range, particularly, the field curvature while restraining a manufacturing difficulty level from being increased by restraining the occurrence of eccentric coma aberration caused by a manufacturing error. 
     In the example of  FIG.  1   , the number of lens groups in which the mutual distance changes during zooming and constitute the subsequent lens group GR is three. However, in the technology of the present disclosure, the number of lens groups constituting the subsequent lens group GR may be another number. The number of lens groups is one or more and four or less in order to reduce the size thereof and achieve high performance. 
       FIG.  1    illustrates the example in which the optical member PP is disposed between the lens system and the image plane Sim. However, various filters may be disposed between the lenses instead of disposing the low-pass filter and/or the various filters for shielding rays with a specific wavelength range between the lens system and the image plane Sim, or the lens surface of any of the lenses may be coated so as to have the same functions as the various filters. 
     The above-mentioned preferred configurations and available configurations may be any combinations, and it is preferable that the configurations are selectively adopted in accordance with required specification. According to the present embodiment, it is possible to realize the small-size zoom lens having high optical performance while obtaining the wide angle of view. The “wide angle of view” mentioned herein means that the maximum full-angle of view at the wide-angle end is higher than 120 degrees. 
     Next, numerical examples of the zoom lens according to the present invention will be described. 
     Example 1 
     Cross-sectional views of a zoom lens according to Example 1 and schematic movement loci are shown in  FIG.  2   .  FIG.  2    shows a state where the object at infinity is in focus, where the left side of the drawing is the object side and the right side of the drawing is the image side. In  FIG.  2   , a wide-angle end state is represented at an upper part labeled by “wide-angle end”, and a telephoto end state is represented at a lower part labeled by “telephoto end”. Between the upper part and the lower part of  FIG.  2   , the schematic movement locus of each lens group in a case where zooming from the wide-angle end to the telephoto end is performed is represented by an arrow for each lens group moving during zooming, and a ground symbol is represented for the lens group fixed with respect to the image plane sim during zooming. 
     The zoom lens according to Example 1 consists of a first lens group G 1  having a negative refractive power, a second lens group G 2  having a positive refractive power, a third lens group G 3  having a positive refractive power, a fourth lens group G 4  having a negative refractive power, and a fifth lens group G 5  having a positive refractive power in order from the object side to the image side. During zooming from the wide-angle end to the telephoto end, the first lens group G 1  moves to the image side, the second lens group G 2 , the third lens group G 3 , and the fourth lens group G 4  move to the object side, and the fifth lens group G 5  is fixed on to the image plane Sim. Thus, all the distances between the adjacent lens groups change. The first lens group G 1  consists of five lenses such as lenses L 11  to L 15  in order from the object side to the image side, the second lens group G 2  consists of the aperture stop St and five lenses such as lenses L 21  to L 25  in order from the object side to the image side, the third lens group G 3  consists of five lenses such as lenses L 31  to L 35  in order from the object side to the image side, the fourth lens group G 4  consists of four lenses such as lenses L 41  to L 44  in order from the object side to the image side, and the fifth lens group G 5  consists of one lens such as a lens L 51 . The focusing lens group Gf is the entire fourth lens group G 4 . Similarly to  FIG.  1   , an arrow pointing the image-side direction is represented under the lens group corresponding to the focusing lens group Gf in  FIG.  2   . The outline of the zoom lens according to Example 1 has been described above. 
     Table 1 shows basic lens data of the zoom lens according to Example 1, Table 2 shows specifications and variable surface distances, and Table 3 shows aspherical surface coefficients thereof. In Table 1, the column of Sn shows surface numbers. The surface closest to the object side is the first surface, and the surface numbers increase one by one toward the image side. The column of R shows radii of curvature of the respective surfaces. The column of D shows surface distances on the optical axis between the respective surfaces and the surfaces adjacent to the image side. Further, the column of Nd shows a refractive index of each constituent element with the d line as the reference, the column of vd shows an Abbe number of each constituent element at the d line, and the column of θgF shows a partial dispersion ratio of each constituent element between the g line and the F line. It should be noted that the partial dispersion ratio θgF between the g line and the F line of a certain lens is defined by θgF=(Ng−NF)/(NF−NC), where the refractive indices of the lens at the g line, F line, and C line are Ng, NF, and NC, respectively. 
     In Table 1, a reference sign of a radius curvature of a surface having a shape in which a convex surface faces the object side is set to be positive, and a reference sign of a radius of curvature of a surface having a shape in which a convex surface faces the image side is set to be negative. Table 1 additionally shows the aperture stop St and the optical member PP. In Table 1, in a place of a surface number of a surface corresponding to the aperture stop St, the surface number and a term of (St) are noted. A value at the bottom place of D in Table 1 indicates a distance between the image plane Sim and the surface closest to the image side in the table. In Table 1, the variable surface distances are referenced by the reference signs DD[ ], and are written into places of D, where object side surface numbers of distances are noted in [ ]. 
     In Table 2, values of the zoom ratio Zr, the focal length f of the entire system, the F number FNo., the maximum total angle of view 2ω, and the variable surface distance are represented with the d line as the reference.(°) in the place of 2ω indicates that the unit thereof is a degree. In Table 2, values in a state in which the object at infinity at the wide-angle end is in focus, in a state in which the object at infinity at the telephoto end is in focus, in a state in which an object at a distance of 500 mm (millimeters) from the image plane at the wide-angle end is in focus, and in a state in which an object at a distance of 500 mm (millimeters) from the image plane at the telephoto end is in focus are represented in the columns of W-Infinity, T-Infinity, W-500 mm, and T-500 mm, respectively. f in the column of W-Infinity corresponds to fw used in the aforementioned Conditional Expression. 
     In Table 1, the reference sign * is attached to surface numbers of aspherical surfaces, and numerical values of the paraxial radius of curvature are written into the column of the radius of curvature of the aspherical surface. In Table 3, the column of Sn shows surface numbers of aspherical surfaces, and the columns of KA and Am (m=3, 4, 5, . . . ) show numerical values of the aspherical surface coefficients of the aspherical surfaces. The “E±n” (n: an integer) in numerical values of the aspherical surface coefficients of Table 3 indicates “× 10   ±n ”. KA and Am are aspherical surface coefficients in an aspherical surface expression expressed in the following expression.
 
 Zd=C×h   2 /{1+(1− KA×C   2   ×h   2 ) 1/2   }+ΣAm×h   m  
 
     Here, Zd is an aspherical surface depth (a length of a perpendicular from a point on an aspherical surface at height h to a plane that is perpendicular to the optical axis and contacts with the vertex of the aspherical surface), 
     h is a height (a distance from the optical axis to the lens surface), 
     C is a reciprocal of paraxial curvature radius, 
     KA and Am are aspherical surface coefficients, and Σ in the aspherical surface expression means the sum with respect to m. 
     In data of each table, a degree is used as a unit of an angle, and mm (millimeter) is used as a unit of a length, but appropriate different units may be used since the optical system can be used even in a case where the system is enlarged or reduced in proportion. Further, each of the following tables shows numerical values rounded off to predetermined decimal places. 
     
       
         
           
               
             
               
                 TABLE 1 
               
             
            
               
                   
               
               
                 Example 1 
               
            
           
           
               
               
               
               
               
               
            
               
                 Sn 
                 R 
                 D 
                 Nd 
                 vd 
                 θgF 
               
               
                   
               
            
           
           
               
               
               
               
               
               
            
               
                  1 
                 41.94034 
                 2.100 
                 1.85150 
                 40.78 
                 0.56958 
               
               
                  2 
                 24.28157 
                 6.178 
                   
                   
                   
               
               
                 *3 
                 75.00000 
                 2.500 
                 1.69259 
                 53.07 
                 0.54955 
               
               
                 *4 
                 18.47265 
                 7.784 
                   
                   
                   
               
               
                 *5 
                 36.29274 
                 2.100 
                 1.85108 
                 40.12 
                 0.56852 
               
               
                 *6 
                 17.10000 
                 8.354 
                   
                   
                   
               
               
                  7 
                 −46.41263 
                 1.120 
                 1.43875 
                 94.66 
                 0.53402 
               
               
                  8 
                 26.32000 
                 5.100 
                 1.95375 
                 32.32 
                 0.59015 
               
               
                  9 
                 366.77570 
                 DD[9] 
                   
                   
                   
               
               
                   10(St) 
                 ∞ 
                 1.311 
                   
                   
                   
               
               
                 *11  
                 26.26117 
                 4.880 
                 1.69350 
                 53.18 
                 0.54831 
               
               
                 *12  
                 −35.28129 
                 0.203 
                   
                   
                   
               
               
                 13 
                 −57.42580 
                 0.820 
                 1.75500 
                 52.32 
                 0.54737 
               
               
                 14 
                 19.66700 
                 2.800 
                 1.59522 
                 67.73 
                 0.54426 
               
               
                 15 
                 137.14630 
                 1.893 
                   
                   
                   
               
               
                 16 
                 −277.24752 
                 0.790 
                 1.81600 
                 46.62 
                 0.55682 
               
               
                 17 
                 29.77900 
                 2.800 
                 1.64769 
                 33.79 
                 0.59393 
               
               
                 18 
                 −67.77760 
                 DD[18] 
                   
                   
                   
               
               
                 19 
                 −155.86052 
                 0.810 
                 1.81600 
                 46.62 
                 0.55682 
               
               
                 20 
                 20.41300 
                 4.360 
                 1.59282 
                 68.62 
                 0.54414 
               
               
                 21 
                 −35.61991 
                 2.100 
                   
                   
                   
               
               
                 22 
                 42.02719 
                 1.010 
                 1.85150 
                 40.78 
                 0.56958 
               
               
                 23 
                 18.24500 
                 4.990 
                 1.43875 
                 94.66 
                 0.53402 
               
               
                 24 
                 −56.85949 
                 0.150 
                   
                   
                   
               
               
                 25 
                 25.78476 
                 5.800 
                 1.43875 
                 94.66 
                 0.53402 
               
               
                 26 
                 −25.78476 
                 DD[26] 
                   
                   
                   
               
               
                 *27  
                 −64.12560 
                 2.690 
                 1.85343 
                 40.56 
                 0.56684 
               
               
                 *28  
                 −21.45850 
                 0.100 
                   
                   
                   
               
               
                 29 
                 ∞ 
                 0.890 
                 1.88300 
                 40.76 
                 0.56679 
               
               
                 30 
                 12.20900 
                 5.680 
                 1.49700 
                 81.54 
                 0.53748 
               
               
                 31 
                 −177.03000 
                 0.810 
                 1.88300 
                 39.22 
                 0.57295 
               
               
                 32 
                 27.74373 
                 DD[32] 
                   
                   
                   
               
               
                 33 
                 155.15267 
                 2.500 
                 1.94595 
                 17.98 
                 0.65460 
               
               
                 34 
                 −99.58637 
                 8.949 
                   
                   
                   
               
               
                 35 
                 ∞ 
                 2.850 
                 1.51680 
                 64.20 
                 0.53430 
               
               
                 36 
                 ∞ 
                 1.000 
               
               
                   
               
            
           
         
       
     
     
       
         
           
               
             
               
                 TABLE 2 
               
             
            
               
                   
               
               
                 Example 1 
               
            
           
           
               
               
               
               
               
               
            
               
                   
                   
                 W-Infinity 
                 T-Infinity 
                 W-500 mm 
                 T-500 mm 
               
               
                   
                   
               
            
           
           
               
               
               
               
               
               
            
               
                   
                 Zr 
                 1.000 
                 1.883 
                 — 
                 — 
               
               
                   
                 f 
                 8.238 
                 15.516 
                 8.195 
                 15.327 
               
               
                   
                 FNo. 
                 2.88 
                 2.88 
                 2.85 
                 2.87 
               
               
                   
                 2ω(°) 
                 125.8 
                 82.4 
                 126.0 
                 82.8 
               
               
                   
                 DD[9] 
                 29.531 
                 2.986 
                 29.531 
                 2.986 
               
               
                   
                 DD[18] 
                 3.357 
                 2.809 
                 3.357 
                 2.809 
               
               
                   
                 DD[26] 
                 2.100 
                 6.601 
                 2.222 
                 6.900 
               
               
                   
                 DD[32] 
                 3.447 
                 9.257 
                 3.325 
                 8.958 
               
               
                   
                   
               
            
           
         
       
     
     
       
         
           
               
             
               
                 TABLE 3 
               
               
                   
               
               
                 Example 1 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
            
               
                   
                 Sn 
               
            
           
           
               
               
               
               
               
            
               
                   
                 3 
                 4 
                 5 
                 6 
               
               
                   
               
               
                 KA 
                   1.0000000E+00 
                   1.0000000E+00 
                   1.0000000E+00 
                   1.0000000E+00 
               
               
                 A3 
                   0.0000000E+00 
                   0.0000000E+00 
                   0.0000000E+00 
                   0.0000000E+00 
               
               
                 A4 
                   1.8160996E−04 
                   1.8468610E−04 
                 −3.5121597E−05 
                 −5.1194646E−05 
               
               
                 A5 
                 −1.1335952E−05 
                 −1.2145091E−05 
                 −1.7847803E−05 
                 −1.8058170E−05 
               
               
                 A6 
                 −1.4335425E−06 
                 −1.2166255E−06 
                   2.3507898E−06 
                   3.5437269E−06 
               
               
                 A7 
                   1.6657704E−07 
                   7.3739848E−09 
                   2.6791047E−07 
                   1.0407126E−07 
               
               
                 A8 
                   3.7176528E−09 
                   1.1634818E−08 
                 −4.7251861E−08 
                 −6.5002915E−08 
               
               
                 A9 
                 −1.1789882E−09 
                   1.7527294E−09 
                 −2.3578362E−09 
                   1.5980818E−09 
               
               
                 A10 
                   1.6846045E−11 
                 −2.3439242E−10 
                   5.0985133E−10 
                   9.6469129E−10 
               
               
                 A11 
                   4.9683664E−12 
                 −2.0890135E−11 
                   1.3769111E−11 
                 −1.1394206E−10 
               
               
                 A12 
                 −1.6509787E−13 
                   2.6854226E−12 
                 −3.4119027E−12 
                 −3.5085860E−12 
               
               
                 A13 
                 −1.2889391E−14 
                   1.1950808E−13 
                 −5.0951086E−14 
                   1.5437474E−12 
               
               
                 A14 
                   5.7379998E−16 
                 −1.6261627E−14 
                   1.4344945E−14 
                 −4.8263251E−14 
               
               
                 A15 
                   2.0021309E−17 
                 −3.8891310E−16 
                   1.0991901E−16 
                 −8.5442321E−15 
               
               
                 A16 
                 −1.0471255E−18 
                   5.3876680E−17 
                 −3.6564916E−17 
                   4.8212604E−16 
               
               
                 A17 
                 −1.6950892E−20 
                   6.9841033E−19 
                 −1.2242734E−19 
                   2.0638114E−17 
               
               
                 A18 
                   1.0001019E−21 
                 −9.2860078E−20 
                   5.1534781E−20 
                 −1.5464338E−18 
               
               
                 A19 
                   5.9701858E−24 
                 −5.4301162E−22 
                   5.2084646E−23 
                 −1.7486813E−20 
               
               
                 A20 
                 −3.9636710E−25 
                   6.5318111E−23 
                 −3.0822936E−23 
                   1.6996115E−21 
               
               
                   
               
            
           
           
               
               
            
               
                   
                 Sn 
               
            
           
           
               
               
               
               
               
            
               
                   
                 11 
                 12 
                 27 
                 28 
               
               
                   
               
               
                 KA 
                   1.0000000E+00 
                   1.0000000E+00 
                   1.0000000E+00 
                   1.0000000E+00 
               
               
                 A3 
                   0.0000000E+00 
                   0.0000000E+00 
                   0.0000000E+00 
                   0.0000000E+00 
               
               
                 A4 
                   3.4130173E−05 
                   6.2420625E−05 
                 −6.0807770E−05 
                   2.9716437E−05 
               
               
                 A5 
                 −2.6217914E−05 
                 −2.1062733E−05 
                   3.6227550E−05 
                   7.6242490E−07 
               
               
                 A6 
                   9.8676344E−06 
                   8.4905269E−06 
                 −2.5310378E−05 
                 −1.7092045E−06 
               
               
                 A7 
                 −4.8898264E−07 
                 −1.1036213E−06 
                   9.4296047E−06 
                   4.5860772E−07 
               
               
                 A8 
                 −7.2967595E−07 
                 −2.5485692E−07 
                 −1.6820493E−06 
                   1.4557727E−08 
               
               
                 A9 
                   1.9381422E−07 
                   1.1852547E−07 
                 −6.1219487E−10 
                 −2.5304394E−08 
               
               
                 A10 
                   1.5648615E−09 
                 −1.3534098E−08 
                   5.3585618E−08 
                   1.6289649E−09 
               
               
                 A11 
                 −6.6656712E−09 
                 −1.6863962E−09 
                 −7.2268338E−09 
                   6.6338124E−10 
               
               
                 A12 
                   4.6499647E−10 
                   6.5309998E−10 
                 −2.3410749E−10 
                 −6.7515269E−11 
               
               
                 A13 
                   1.2073678E−10 
                 −4.1165896E−11 
                   1.2768330E−10 
                 −9.9334783E−12 
               
               
                 A14 
                 −1.2738591E−11 
                 −9.2191136E−12 
                 −6.9388519E−12 
                   1.2373518E−12 
               
               
                 A15 
                 −1.4421479E−12 
                   1.4785823E−12 
                 −6.7668240E−13 
                   8.6500487E−14 
               
               
                 A16 
                   1.7978446E−13 
                   2.0460884E−14 
                   8.4897976E−14 
                 −1.2293866E−14 
               
               
                 A17 
                   1.0435769E−14 
                 −1.6419747E−14 
                 −9.8085392E−16 
                 −4.0666189E−16 
               
               
                 A18 
                 −1.3885918E−15 
                   6.1368314E−16 
                 −2.5071105E−16 
                   6.4330812E−17 
               
               
                 A19 
                 −3.2975909E−17 
                   6.4961582E−17 
                   1.3030111E−17 
                   7.9572817E−19 
               
               
                 A20 
                   4.4854674E−18 
                 −4.1335786E−18 
                 −1.9352472E−19 
                 −1.3910445E−19 
               
               
                   
               
            
           
         
       
     
       FIG.  13    shows aberration diagrams of the zoom lens according to Example 1. In  FIG.  13   , in order from the left side, spherical aberration, astigmatism, distortion, and lateral chromatic aberration are shown. In  FIG.  13   , aberration diagrams in a state in which the object at infinity at the wide-angle end is in focus is shown in the first row of “wide-angle end, object at infinity”, aberration diagrams in a state in which the object at infinity at the telephoto end is in focus is shown in the second row of “telephoto end, object at infinity”, aberration diagrams in a state in which the object at the distance of 500 mm (millimeters) from the image plane Sim at the wide-angle end is in focus is shown in the third row of “wide-angle end, object within short range (500 mm from image plane)”, and aberration diagrams in a state in which the object at the distance of 500 mm (millimeters) from the image plane Sim at the telephoto end is in focus is shown in the fourth row of “telephoto end, object within short range (500 mm from image plane)”. 
     In  FIG.  13   , in the spherical aberration diagram, aberrations at the d line, the C line, the F line, and the g line are respectively indicated by the solid line, the long dashed line, the short dashed line, and the dashed double-dotted line. In the astigmatism diagram, aberration in the sagittal direction at the d line is indicated by the solid line, and aberration in the tangential direction at the d line is indicated by the short dashed line. In the distortion diagram, aberration at the d line is indicated by the solid line. In the lateral chromatic aberration diagram, aberrations at the C line, the F line, and the g line are respectively indicated by the long dashed line, the short dashed line, and the dashed double-dotted line. In the spherical aberration diagram, FNo. indicates an F number. In the other aberration diagrams, w indicates a half angle of view. 
     Reference signs, meanings, description methods, illustration methods of the respective data pieces related to Example  1  are the same as those in the following examples unless otherwise noted. Therefore, in the following description, repeated description will be omitted. 
     Example 2 
       FIG.  3    shows cross sections and schematic movement loci of a zoom lens according to Example 2. The zoom lens according to Example 2 consists of a first lens group G 1  having a negative refractive power, a second lens group G 2  having a positive refractive power, a third lens group G 3  having a negative refractive power, and a fourth lens group G 4  having a positive refractive power in order from the object side to the image side. During zooming from the wide-angle end to the telephoto end, the first lens group G 1  moves to the image side, the second lens group G 2  and the third lens group G 3  move to the object side, and the fourth lens group G 4  is fixed on to the image plane Sim. Thus, all the distances between the adjacent lens groups change. The first lens group G 1  consists of five lenses such as lenses L 11  to L 15  in order from the object side to the image side, the second lens group G 2  consists of an aperture stop St and ten lenses such as lenses L 21  to L 30  in order from the object side to the image side, the third lens group G 3  consists of four lenses such as lenses L 31  to L 34  in order from the object side to the image side, and the fourth lens group G 4  consists of one lens such as a lens L 41 . The focusing lens group Gf is the entire third lens group G 3 . 
     Table 4 shows basic lens data of the zoom lens according to Example 2, Table 5 shows specifications and variable surface distances, Table 6 shows aspherical surface coefficients thereof, and  FIG.  14    shows aberration diagrams. 
     
       
         
           
               
             
               
                 TABLE 4 
               
             
            
               
                   
               
               
                 Example 2 
               
            
           
           
               
               
               
               
               
               
            
               
                 Sn 
                 R 
                 D 
                 Nd 
                 vd 
                 θgF 
               
               
                   
               
            
           
           
               
               
               
               
               
               
            
               
                  1 
                 41.57886 
                 2.100 
                 1.85150 
                 40.78 
                 0.56958 
               
               
                  2 
                 24.25407 
                 6.125 
                   
                   
                   
               
               
                 *3 
                 75.00000 
                 2.504 
                 1.69259 
                 53.07 
                 0.54955 
               
               
                 *4 
                 18.47265 
                 7.966 
                   
                   
                   
               
               
                 *5 
                 35.69926 
                 2.100 
                 1.85108 
                 40.12 
                 0.56852 
               
               
                 *6 
                 17.26489 
                 8.101 
                   
                   
                   
               
               
                  7 
                 −46.17859 
                 1.146 
                 1.43875 
                 94.66 
                 0.53402 
               
               
                  8 
                 26.32898 
                 5.100 
                 1.95375 
                 32.32 
                 0.59015 
               
               
                  9 
                 262.11995 
                 DD[9] 
                   
                   
                   
               
               
                   10(St) 
                 ∞ 
                 1.300 
                   
                   
                   
               
               
                 *11  
                 26.80662 
                 4.452 
                 1.69350 
                 53.18 
                 0.54831 
               
               
                 *12  
                 −35.63650 
                 0.566 
                   
                   
                   
               
               
                 13 
                 −61.30614 
                 0.820 
                 1.75500 
                 52.32 
                 0.54737 
               
               
                 14 
                 20.38264 
                 2.417 
                 1.59522 
                 67.73 
                 0.54426 
               
               
                 15 
                 178.44871 
                 1.659 
                   
                   
                   
               
               
                 16 
                 −317.69015 
                 0.810 
                 1.81600 
                 46.62 
                 0.55682 
               
               
                 17 
                 19.46256 
                 3.500 
                 1.64769 
                 33.79 
                 0.59393 
               
               
                 18 
                 −81.81627 
                 3.300 
                   
                   
                   
               
               
                 19 
                 −277.52941 
                 0.810 
                 1.83481 
                 42.72 
                 0.56486 
               
               
                 20 
                 22.47336 
                 4.482 
                 1.59282 
                 68.62 
                 0.54414 
               
               
                 21 
                 −34.64629 
                 2.116 
                   
                   
                   
               
               
                 22 
                 42.23848 
                 0.880 
                 1.85150 
                 40.78 
                 0.56958 
               
               
                 23 
                 17.93578 
                 4.893 
                 1.43875 
                 94.66 
                 0.53402 
               
               
                 24 
                 −57.98556 
                 0.150 
                   
                   
                   
               
               
                 25 
                 25.48677 
                 5.959 
                 1.43875 
                 94.66 
                 0.53402 
               
               
                 26 
                 −25.37606 
                 DD[26] 
                   
                   
                   
               
               
                 *27  
                 −60.59195 
                 2.288 
                 1.85135 
                 40.10 
                 0.56954 
               
               
                 *28  
                 −22.78953 
                 0.150 
                   
                   
                   
               
               
                 29 
                 170.69147 
                 0.890 
                 1.88300 
                 40.76 
                 0.56679 
               
               
                 30 
                 12.07645 
                 5.852 
                 1.49700 
                 81.54 
                 0.53748 
               
               
                 31 
                 −141.73694 
                 0.850 
                 1.88300 
                 40.76 
                 0.56679 
               
               
                 32 
                 24.97038 
                 DD[32] 
                   
                   
                   
               
               
                 33 
                 131.85158 
                 2.500 
                 1.95906 
                 17.47 
                 0.65993 
               
               
                 34 
                 −104.15265 
                 8.943 
                   
                   
                   
               
               
                 35 
                 ∞ 
                 2.850 
                 1.51680 
                 64.20 
                 0.53430 
               
               
                 36 
                 ∞ 
                 0.998 
               
               
                   
               
            
           
         
       
     
     
       
         
           
               
             
               
                 TABLE 5 
               
             
            
               
                   
               
               
                 Example 2 
               
            
           
           
               
               
               
               
               
               
            
               
                   
                   
                 W-Infinity 
                 T-Infinity 
                 W-500 mm 
                 T-500 mm 
               
               
                   
                   
               
            
           
           
               
               
               
               
               
               
            
               
                   
                 Zr 
                 1.000 
                 1.883 
                 — 
                 — 
               
               
                   
                 f 
                 8.238 
                 15.517 
                 8.195 
                 15.323 
               
               
                   
                 FNo. 
                 2.88 
                 2.88 
                 2.86 
                 2.88 
               
               
                   
                 2ω (°) 
                 125.8 
                 82.2 
                 126.0 
                 82.6 
               
               
                   
                 DD[9] 
                 29.463 
                 3.031 
                 29.463 
                 3.031 
               
               
                   
                 DD[26] 
                 2.200 
                 7.022 
                 2.317 
                 7.316 
               
               
                   
                 DD[32] 
                 3.525 
                 8.963 
                 3.408 
                 8.670 
               
               
                   
                   
               
            
           
         
       
     
     
       
         
           
               
             
               
                 TABLE 6 
               
               
                   
               
               
                 Example 2 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
            
               
                   
                 Sn 
               
            
           
           
               
               
               
               
               
            
               
                   
                 3 
                 4 
                 5 
                 6 
               
               
                   
               
               
                 KA 
                 l.0000000E+00 
                 l.0000000E+00 
                 l.0000000E+00 
                   l.0000000E+00 
               
               
                 A3 
                 0.0000000E+00 
                 0.0000000E+00 
                 0.0000000E+00 
                   0.0000000E+00 
               
               
                 A4 
                 1.5156791E−04 
                 1.6374914E−04 
                 −8.8814963E−05   
                 −1.0516987E−04 
               
               
                 A5 
                 −9.0712096E−06   
                 −1.7761710E−05   
                 −1.8121361E−05   
                 −1.9226538E−05 
               
               
                 A6 
                 −9.2049009E−07   
                 1.2690117E−07 
                 4.3273839E−06 
                   5.7643749E−06 
               
               
                 A7 
                 1.3501012E−07 
                 1.6616531E−07 
                 2.7891184E−07 
                   1.8068743E−07 
               
               
                 A8 
                 −7.0607683E−10   
                 −2.5650069E−08   
                 −8.3364000E−08   
                 −1.1421078E−07 
               
               
                 A9 
                 −9.3380967E−10   
                 3.2446511E−09 
                 −2.6690256E−09   
                 −7.2236724E−10 
               
               
                 A10 
                 3.7112077E−11 
                 −3.7601892E−10   
                 9.0189314E−10 
                   1.6310740E−09 
               
               
                 A11 
                 3.8730063E−12 
                 1.0528382E−11 
                 1.7826049E−11 
                 −7.7246524E−11 
               
               
                 A12 
                 −2.1801993E−13   
                 2.4804841E−12 
                 −6.1170327E−12   
                 −9.2933398E−12 
               
               
                 A13 
                 −1.0001266E−14   
                 −2.2284338E−13   
                 −7.7659318E−14   
                   1.2135241E−12 
               
               
                 A14 
                 6.5297267E−16 
                 3.1132163E−15 
                 2.6275845E−14 
                 −1.5859194E−14 
               
               
                 A15 
                 1.5600421E−17 
                 4.2397882E−16 
                 1.9733519E−16 
                 −6.8377351E−15 
               
               
                 A16 
                 −1.1114900E−18   
                 −3.3465602E−17   
                 −6.8550768E−17   
                   3.6853799E−16 
               
               
                 A17 
                 −1.3315482E−20   
                 9.4421093E−19 
                 −2.5653251E−19   
                   1.5918878E−17 
               
               
                 A18 
                 1.0237693E−21 
                 3.1045963E−20 
                 9.8373488E−20 
                 −1.3183203E−18 
               
               
                 A19 
                 4.7249477E−24 
                 −2.3173255E−21   
                 1.2756392E−22 
                 −1.2072567E−20 
               
               
                 A20 
                 −3.9773030E−25   
                 2.9331005E−23 
                 −5.9369543E−23   
                   1.4970035E−21 
               
               
                   
               
            
           
           
               
               
            
               
                   
                 Sn 
               
            
           
           
               
               
               
               
               
            
               
                   
                 11 
                 12 
                 27 
                 28 
               
               
                   
               
               
                 KA 
                 l.0000000E+00 
                 l.0000000E+00 
                 l.0000000E+00 
                   l.0000000E+00 
               
               
                 A3 
                 0.0000000E+00 
                 0.0000000E+00 
                 0.0000000E+00 
                   0.0000000E+00 
               
               
                 A4 
                 8.5013625E−06 
                 3.7181176E−05 
                 −3.2617943E−05   
                   4.9919455E−05 
               
               
                 A5 
                 −1.0632579E−05   
                 −7.1364321E−06   
                 2.4946959E−05 
                 −9.5939703E−06 
               
               
                 A6 
                 5.0286367E−06 
                 3.0821562E−06 
                 −2.6744343E−05   
                 −1.8216522E−06 
               
               
                 A7 
                 −3.4509972E−07   
                 −7.3929168E−07   
                 1.0475990E−05 
                   7.4076796E−07 
               
               
                 A8 
                 −5.4904660E−07   
                 1.0309078E−07 
                 −1.7888595E−06   
                   5.4487057E−09 
               
               
                 A9 
                 1.9465468E−07 
                 2.4163434E−08 
                 −1.8253488E−08   
                 −2.9098532E−08 
               
               
                 A10 
                 −1.2451284E−08   
                 −1.6651615E−08   
                 5.7224245E−08 
                   1.8045725E−09 
               
               
                 A11 
                 −4.7794533E−09   
                 2.0283161E−09 
                 −7.1464254E−09   
                   6.6952922E−10 
               
               
                 A12 
                 6.8206386E−10 
                 4.7502649E−10 
                 −2.7951142E−10   
                 −6.6775033E−11 
               
               
                 A13 
                 6.1078129E−11 
                 −1.1926956E−10   
                 1.2731880E−10 
                 −9.3706892E−12 
               
               
                 A14 
                 −1.1895987E−11   
                 −2.8048301E−12   
                 −6.6195473E−12   
                   1.1702961E−12 
               
               
                 A15 
                 −8.3816391E−13   
                 2.4980730E−12 
                 −6.5672099E−13   
                   7.8505572E−14 
               
               
                 A16 
                 1.4724643E−13 
                 −8.1177234E−14   
                 8.2505317E−14 
                 −1.1326790E−14 
               
               
                 A17 
                 8.7093403E−15 
                 −2.4247830E−14   
                 −1.2144609E−15   
                 −3.6190285E−16 
               
               
                 A18 
                 −1.2640897E−15   
                 1.4587642E−15 
                 −2.3266490E−16   
                   5.8242693E−17 
               
               
                 A19 
                 −3.5687348E−17   
                 9.1266978E−17 
                 1.3805449E−17 
                   7.0603159E−19 
               
               
                 A20 
                 4.7637251E−18 
                 −7.0550367E−18   
                 −2.5097872E−19   
                 −1.2437938E−19 
               
               
                   
               
            
           
         
       
     
     Example 3 
       FIG.  4    shows cross sections and schematic movement loci of a zoom lens according to Example 3. The zoom lens according to Example  3  consists of a first lens group G 1  having a negative refractive power, a second lens group G 2  having a positive refractive power, a third lens group G 3  having a positive refractive power, and a fourth lens group G 4  having a negative refractive power in order from the object side to the image side. During zooming from the wide-angle end to the telephoto end and the first lens group G 1  moves to the image side, the second lens group G 2 , the third lens group G 3 , and the fourth lens group G 4  move to the object side. Thus, all the distances between the adjacent lens groups change. The first lens group G 1  consists of five lenses such as lenses L 11  to L 15  in order from the object side to the image side, the second lens group G 2  consists of an aperture stop St and five lenses such as lenses L 21  to L 25  in order from the object side to the image side, the third lens group G 3  consists of five lenses such as lenses L 31  to L 35  in order from the object side to the image side, and the fourth lens group G 4  consists of four lenses such as lenses L 41  to L 44  in order from the object side to the image side. The focusing lens group Gf is the entire fourth lens group G 4 . 
     Table 7 shows basic lens data of the zoom lens according to Example 3, Table 8 shows specifications and variable surface distances, Table 9 shows aspherical surface coefficients thereof, and  FIG.  15    shows aberration diagrams. 
     
       
         
           
               
             
               
                 TABLE 7 
               
             
            
               
                   
               
               
                 Example 3 
               
            
           
           
               
               
               
               
               
               
            
               
                 Sn 
                 R 
                 D 
                 Nd 
                 vd 
                 θgF 
               
               
                   
               
            
           
           
               
               
               
               
               
               
            
               
                  1 
                 37.99918 
                 2.050 
                 1.81352 
                 46.65 
                 0.55465 
               
               
                  2 
                 24.14081 
                 5.099 
                   
                   
                   
               
               
                 *3 
                 35.59663 
                 2.504 
                 1.99289 
                 23.69 
                 0.62146 
               
               
                 *4 
                 19.04644 
                 4.779 
                   
                   
                   
               
               
                 *5 
                 42.92988 
                 2.100 
                 1.85108 
                 40.12 
                 0.56852 
               
               
                 *6 
                 17.08576 
                 11.798 
                   
                   
                   
               
               
                  7 
                 −33.34593 
                 1.120 
                 1.43875 
                 94.66 
                 0.53402 
               
               
                  8 
                 30.28942 
                 4.699 
                 1.95375 
                 32.32 
                 0.59015 
               
               
                  9 
                 −1553.33353 
                 DD[9] 
                   
                   
                   
               
               
                   10(St) 
                 ∞ 
                 1.314 
                   
                   
                   
               
               
                 *11  
                 30.80661 
                 6.239 
                 1.77794 
                 50.21 
                 0.54894 
               
               
                 *12  
                 −42.33093 
                 0.100 
                   
                   
                   
               
               
                 13 
                 −71.71406 
                 0.820 
                 1.74073 
                 50.89 
                 0.55099 
               
               
                 14 
                 24.54512 
                 2.469 
                 1.49700 
                 81.54 
                 0.53748 
               
               
                 15 
                 −399.64726 
                 1.121 
                   
                   
                   
               
               
                 16 
                 −470.41576 
                 0.790 
                 1.83259 
                 44.74 
                 0.55815 
               
               
                 17 
                 17.16717 
                 3.493 
                 1.68073 
                 31.38 
                 0.59488 
               
               
                 18 
                 −84.47041 
                 DD[18] 
                   
                   
                   
               
               
                 19 
                 −158.35527 
                 0.810 
                 1.84607 
                 43.39 
                 0.56082 
               
               
                 20 
                 20.45760 
                 4.379 
                 1.59522 
                 67.73 
                 0.54426 
               
               
                 21 
                 −34.34684 
                 1.499 
                   
                   
                   
               
               
                 22 
                 47.46752 
                 0.880 
                 1.85312 
                 40.61 
                 0.56839 
               
               
                 23 
                 18.09806 
                 5.018 
                 1.43875 
                 94.66 
                 0.53402 
               
               
                 24 
                 −45.56510 
                 0.100 
                   
                   
                   
               
               
                 25 
                 26.85043 
                 5.802 
                 1.43875 
                 94.66 
                 0.53402 
               
               
                 26 
                 −22.66757 
                 DD[26] 
                   
                   
                   
               
               
                 *27  
                 −55.13921 
                 2.165 
                 1.85135 
                 40.10 
                 0.56954 
               
               
                 *28  
                 −23.68550 
                 0.100 
                   
                   
                   
               
               
                 29 
                 261.49355 
                 0.890 
                 1.88300 
                 40.76 
                 0.56679 
               
               
                 30 
                 12.58792 
                 5.610 
                 1.49700 
                 81.54 
                 0.53748 
               
               
                 31 
                 99.37997 
                 0.850 
                 1.88300 
                 40.76 
                 0.56679 
               
               
                 32 
                 30.07342 
                 DD[32] 
                   
                   
                   
               
               
                 33 
                 ∞ 
                 2.850 
                 1.51680 
                 64.20 
                 0.53430 
               
               
                 34 
                 ∞ 
                 0.999 
               
               
                   
               
            
           
         
       
     
     
       
         
           
               
             
               
                 TABLE 8 
               
             
            
               
                   
               
               
                 Example 3 
               
            
           
           
               
               
               
               
               
               
            
               
                   
                   
                 W-Infinity 
                 T-Infinity 
                 W-500 mm 
                 T-500 mm 
               
               
                   
                   
               
            
           
           
               
               
               
               
               
               
            
               
                   
                 Zr 
                 1.000 
                 1.883 
                 — 
                 — 
               
               
                   
                 f 
                 9.265 
                 17.451 
                 9.198 
                 17.117 
               
               
                   
                 FNo. 
                 2.89 
                 3.08 
                 2.89 
                 3.07 
               
               
                   
                 2ω (°) 
                 121.0 
                 76.8 
                 121.2 
                 77.2 
               
               
                   
                 DD[9] 
                 29.998 
                 2.633 
                 29.998 
                 2.633 
               
               
                   
                 DD[18] 
                 3.000 
                 2.605 
                 3.000 
                 2.605 
               
               
                   
                 DD[26] 
                 2.055 
                 5.567 
                 2.195 
                 5.900 
               
               
                   
                 DD[32] 
                 14.970 
                 21.200 
                 14.830 
                 20.868 
               
               
                   
                   
               
            
           
         
       
     
     
       
         
           
               
             
               
                 TABLE 9 
               
               
                   
               
               
                 Example 3 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
            
               
                   
                 Sn 
               
            
           
           
               
               
               
               
               
            
               
                   
                 3 
                 4 
                 5 
                 6 
               
               
                   
               
               
                 KA 
                   l.0000000E+00 
                   l.0000000E+00 
                   l.0000000E+00 
                   l.0000000E+00 
               
               
                 A3 
                   0.0000000E+00 
                   0.0000000E+00 
                   0.0000000E+00 
                   0.0000000E+00 
               
               
                 A4 
                   1.8653627E−05 
                 −1.1249714E−05 
                   3.6774134E−05 
                   5.4538416E−05 
               
               
                 A5 
                   5.4631576E−07 
                   2.6719413E−06 
                 −3.8926308E−07 
                   2.4279446E−06 
               
               
                 A6 
                 −4.3657788E−08 
                   2.7010546E−07 
                   1.1365741E−06 
                   1.0970747E−06 
               
               
                 A7 
                   6.4042895E−09 
                 −4.5270907E−08 
                   1.2306813E−07 
                   6.5575677E−08 
               
               
                 A8 
                 −1.6980981E−09 
                   1.5229011E−10 
                 −2.9597008E−08 
                 −3.0893979E−08 
               
               
                 A9 
                 −1.1629932E−10 
                   4.3579310E−10 
                 −2.0002280E−09 
                 −1.7685576E−09 
               
               
                 A10 
                   1.8465428E−11 
                 −5.7910082E−11 
                   3.1290814E−10 
                   3.6785292E−10 
               
               
                 A11 
                   7.6190855E−13 
                 −2.4789705E−12 
                   1.7767508E−11 
                   1.3104759E−11 
               
               
                 A12 
                 −8.6113503E−14 
                   6.3341097E−13 
                 −2.0558369E−12 
                 −2.8242882E−12 
               
               
                 A13 
                 −2.6321701E−15 
                   8.4672178E−15 
                 −9.0257914E−14 
                   3.4455869E−14 
               
               
                 A14 
                   2.1838804E−16 
                 −2.8362378E−15 
                   8.8187018E−15 
                   1.2002433E−14 
               
               
                 A15 
                   5.0664220E−18 
                 −1.6347103E−17 
                   2.5331244E−16 
                 −1.0257913E−15 
               
               
                 A16 
                 −3.1186625E−19 
                   5.2804074E−18 
                 −2.3226910E−17 
                 −3.8788912E−18 
               
               
                 A17 
                 −5.1403336E−21 
                   1.4460835E−20 
                 −3.5949537E−19 
                   5.1891087E−18 
               
               
                 A18 
                   2.3427439E−22 
                 −1.2301601E−21 
                   3.3201571E−20 
                 −1.5551891E−19 
               
               
                 A19 
                   2.1453680E−24 
                 −2.1312597E−24 
                   1.9814768E−22 
                 −8.4230290E−21 
               
               
                 A20 
                 −7.1222569E−26 
                 −5.1665384E−24 
                 −1.9382541E−23 
                   3.7039395E−22 
               
               
                   
               
            
           
           
               
               
            
               
                   
                 Sn 
               
            
           
           
               
               
               
               
               
            
               
                   
                 11 
                 12 
                 27 
                 28 
               
               
                   
               
               
                 KA 
                   l.0000000E+00 
                   l.0000000E+00 
                   l.0000000E+00 
                   l.0000000E+00 
               
               
                 A3 
                   0.0000000E+00 
                   0.0000000E+00 
                   0.0000000E+00 
                   0.0000000E+00 
               
               
                 A4 
                   1.2347920E−05 
                   8.1546419E−06 
                 −8.2942493E−05 
                   2.1750019E−05 
               
               
                 A5 
                 −8.8716527E−06 
                   1.5376740E−05 
                   4.3001829E−05 
                 −2.1594780E−05 
               
               
                 A6 
                   1.5967426E−06 
                 −2.7311680E−06 
                 −2.6894541E−05 
                   6.4033127E−06 
               
               
                 A7 
                   2.9623001E−07 
                 −1.2522831E−06 
                   1.0254390E−05 
                   6.2601402E−07 
               
               
                 A8 
                 −4.7555152E−08 
                   5.5735626E−07 
                 −1.8342978E−06 
                 −4.5779192E−07 
               
               
                 A9 
                 −3.2382724E−08 
                 −6.2854035E−09 
                 −2.1012585E−08 
                   1.0366821E−08 
               
               
                 A10 
                   3.4554272E−09 
                 −3.2039148E−08 
                   6.1952713E−08 
                   1.4493944E−08 
               
               
                 A11 
                   1.9451415E−09 
                   4.3094838E−09 
                 −7.4166387E−09 
                 −9.0472639E−10 
               
               
                 A12 
                 −2.6402955E−10 
                   7.2546476E−10 
                 −3.6147037E−10 
                 −2.5315989E−10 
               
               
                 A13 
                 −5.1438216E−11 
                 −1.8677460E−10 
                   1.3335709E−10 
                   2.0689556E−11 
               
               
                 A14 
                   8.7946270E−12 
                 −4.1184787E−12 
                 −6.0801859E−12 
                   2.5426916E−12 
               
               
                 A15 
                   6.2022429E−13 
                   3.7896816E−12 
                 −6.6634932E−13 
                 −2.3269348E−13 
               
               
                 A16 
                 −1.3800331E−13 
                 −1.3499925E−13 
                   7.8955818E−14 
                 −1.4053020E−14 
               
               
                 A17 
                 −2.8974041E−15 
                 −3.6109174E−14 
                 −1.6593657E−15 
                   1.3190157E−15 
               
               
                 A18 
                   1.0122026E−15 
                   2.3256214E−15 
                 −1.9197625E−16 
                   3.6194488E−17 
               
               
                 A19 
                   8.6045771E−19 
                   1.3934838E−16 
                   1.6095999E−17 
                 −3.0132977E−18 
               
               
                 A20 
                 −2.7124865E−18 
                 −1.1500892E−17 
                 −4.3047273E−19 
                 −2.3000887E−20 
               
               
                   
               
            
           
         
       
     
     Example 4 
       FIG.  5    shows cross sections and schematic movement loci of a zoom lens according to Example 4. The zoom lens according to Example 4 has the same configuration as the outline of the zoom lens according to Example 1. Table 10 shows basic lens data of the zoom lens according to Example 4, Table 11 shows specifications and variable surface distances, Table 12 shows aspherical surface coefficients thereof, and  FIG.  16    shows aberration diagrams. 
     
       
         
           
               
             
               
                 TABLE 10 
               
             
            
               
                   
               
               
                 Example 4 
               
            
           
           
               
               
               
               
               
               
            
               
                 Sn 
                 R 
                 D 
                 Nd 
                 vd 
                 θgF 
               
               
                   
               
            
           
           
               
               
               
               
               
               
            
               
                  1 
                 42.67431 
                 2.050 
                 1.85150 
                 40.78 
                 0.56958 
               
               
                  2 
                 24.17403 
                 7.218 
                   
                   
                   
               
               
                 *3 
                 186.38308 
                 2.504 
                 1.69350 
                 53.18 
                 0.54831 
               
               
                 *4 
                 18.76100 
                 6.342 
                   
                   
                   
               
               
                 *5 
                 27.10033 
                 2.100 
                 1.85108 
                 40.12 
                 0.56852 
               
               
                 *6 
                 17.33532 
                 8.887 
                   
                   
                   
               
               
                  7 
                 −37.31014 
                 1.161 
                 1.43875 
                 94.66 
                 0.53402 
               
               
                  8 
                 26.93188 
                 4.990 
                 1.95375 
                 32.32 
                 0.59015 
               
               
                  9 
                 294.00006 
                 DD[9] 
                   
                   
                   
               
               
                   10(St) 
                 ∞ 
                 1.300 
                   
                   
                   
               
               
                 *11  
                 25.98740 
                 5.209 
                 1.69350 
                 53.18 
                 0.54831 
               
               
                 *12  
                 −37.87609 
                 0.161 
                   
                   
                   
               
               
                 13 
                 −71.74406 
                 0.820 
                 1.73354 
                 50.92 
                 0.55158 
               
               
                 14 
                 23.13730 
                 2.423 
                 1.59522 
                 67.73 
                 0.54426 
               
               
                 15 
                 272.15551 
                 1.696 
                   
                   
                   
               
               
                 16 
                 −438.10014 
                 0.790 
                 1.83954 
                 44.05 
                 0.55951 
               
               
                 17 
                 17.80689 
                 3.333 
                 1.64769 
                 33.79 
                 0.59393 
               
               
                 18 
                 −95.82496 
                 DD[18] 
                   
                   
                   
               
               
                 19 
                 −160.67334 
                 0.810 
                 1.84584 
                 43.42 
                 0.56078 
               
               
                 20 
                 20.65061 
                 4.297 
                 1.59522 
                 67.73 
                 0.54426 
               
               
                 21 
                 −36.01869 
                 2.187 
                   
                   
                   
               
               
                 22 
                 42.31198 
                 0.880 
                 1.83517 
                 44.22 
                 0.55940 
               
               
                 23 
                 17.93272 
                 4.972 
                 1.43875 
                 94.66 
                 0.53402 
               
               
                 24 
                 −51.39177 
                 0.181 
                   
                   
                   
               
               
                 25 
                 26.04523 
                 5.716 
                 1.43875 
                 94.66 
                 0.53402 
               
               
                 26 
                 −24.11193 
                 DD[26] 
                   
                   
                   
               
               
                 *27  
                 −62.75366 
                 2.250 
                 1.85135 
                 40.10 
                 0.56954 
               
               
                 *28  
                 −23.11976 
                 0.169 
                   
                   
                   
               
               
                 29 
                 160.90135 
                 0.899 
                 1.88300 
                 40.76 
                 0.56679 
               
               
                 30 
                 12.14725 
                 5.630 
                 1.49700 
                 81.54 
                 0.53748 
               
               
                 31 
                 −650.23820 
                 0.850 
                 1.88300 
                 40.76 
                 0.56679 
               
               
                 32 
                 24.56773 
                 DD[32] 
                   
                   
                   
               
               
                 33 
                 186.91532 
                 2.241 
                 1.95906 
                 17.47 
                 0.65993 
               
               
                 34 
                 −106.63809 
                 8.957 
                   
                   
                   
               
               
                 35 
                 ∞ 
                 2.850 
                 1.51680 
                 64.20 
                 0.53430 
               
               
                 36 
                 ∞ 
                 1.001 
               
               
                   
               
            
           
         
       
     
     
       
         
           
               
             
               
                 TABLE 11 
               
             
            
               
                   
               
               
                 Example 4 
               
            
           
           
               
               
               
               
               
               
            
               
                   
                   
                 W-Infinity 
                 T-Infinity 
                 W-500 mm 
                 T-500 mm 
               
               
                   
                   
               
            
           
           
               
               
               
               
               
               
            
               
                   
                 Zr 
                 1.000 
                 1.883 
                 — 
                 — 
               
               
                   
                 f 
                 8.236 
                 15.513 
                 8.192 
                 15.310 
               
               
                   
                 FNo. 
                 2.89 
                 2.88 
                 2.83 
                 2.84 
               
               
                   
                 2ω (°) 
                 125.8 
                 82.2 
                 126.0 
                 82.6 
               
               
                   
                 DD[9] 
                 29.677 
                 3.146 
                 29.677 
                 3.146 
               
               
                   
                 DD[18] 
                 3.300 
                 2.597 
                 3.300 
                 2.597 
               
               
                   
                 DD[26] 
                 2.292 
                 7.117 
                 2.414 
                 7.420 
               
               
                   
                 DD[32] 
                 3.670 
                 9.122 
                 3.548 
                 8.819 
               
               
                   
                   
               
            
           
         
       
     
     
       
         
           
               
             
               
                 TABLE 12 
               
               
                   
               
               
                 Example 4 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
            
               
                   
                 Sn 
               
            
           
           
               
               
               
               
               
            
               
                   
                 3 
                 4 
                 5 
                 6 
               
               
                   
               
               
                 KA 
                   l.0000000E+00 
                   l.0000000E+00 
                   l.0000000E+00 
                   l.0000000E+00 
               
               
                 A3 
                   0.0000000E+00 
                   0.0000000E+00 
                   0.0000000E+00 
                   0.0000000E+00 
               
               
                 A4 
                   2.1445858E−04 
                   1.8461883E−04 
                 −9.9451065E−05 
                 −1.0906043E−04 
               
               
                 A5 
                 −1.2985368E−05 
                 −1.0276536E−05 
                 −1.8928099E−05 
                 −1.8477134E−05 
               
               
                 A6 
                 −1.8231203E−06 
                 −1.7101198E−06 
                   3.623474IE−06 
                   5.1614028E−06 
               
               
                 A7 
                   2.0074909E−07 
                 −4.0339021E−08 
                   2.9745042E−07 
                   1.4877817E−07 
               
               
                 A8 
                   5.3954269E−09 
                   2.4237593E−08 
                 −7.3434536E−08 
                 −1.1587250E−07 
               
               
                 A9 
                 −1.4924077E−09 
                   2.1920222E−09 
                 −2.8111215E−09 
                   3.8059684E−09 
               
               
                 A10 
                   2.2509337E−11 
                 −4.4007090E−10 
                   8.7573188E−10 
                   1.3795096E−09 
               
               
                 A11 
                   6.4380756E−12 
                 −2.2330857E−11 
                   1.8483791E−11 
                 −1.1020155E−10 
               
               
                 A12 
                 −2.4169095E−13 
                   4.8045007E−12 
                 −6.5447584E−12 
                 −7.7291138E−12 
               
               
                 A13 
                 −1.6909836E−14 
                   1.1579301E−13 
                 −7.9024448E−14 
                   1.2515626E−12 
               
               
                 A14 
                   8.7441380E−16 
                 −2.9447988E−14 
                   3.0505737E−14 
                   1.4431896E−16 
               
               
                 A15 
                   2.6729528E−17 
                 −3.4578372E−16 
                   1.9651707E−16 
                 −7.4977127E−15 
               
               
                 A16 
                 −1.6506986E−18 
                   1.0169269E−16 
                 −8.5263067E−17 
                   2.3649071E−16 
               
               
                 A17 
                 −2.3394713E−20 
                   5.7555226E−19 
                 −2.4621714E−19 
                   2.3175488E−17 
               
               
                 A18 
                   1.6313682E−21 
                 −1.8580166E−19 
                   1.3009301E−19 
                 −1.1434451E−18 
               
               
                 A19 
                   8.7255160E−24 
                 −4.2121116E−22 
                   1.1262502E−22 
                 −2.8962941E−20 
               
               
                 A20 
                 −6.6986610E−25 
                   1.4019617E−22 
                 −8.3130498E−23 
                   1.7554360E−21 
               
               
                   
               
            
           
           
               
               
            
               
                   
                 Sn 
               
            
           
           
               
               
               
               
               
            
               
                   
                 11 
                 12 
                 27 
                 28 
               
               
                   
               
               
                 KA 
                   l.0000000E+00 
                   l.0000000E+00 
                   l.0000000E+00 
                   l.0000000E+00 
               
               
                 A3 
                   0.0000000E+00 
                   0.0000000E+00 
                   0.0000000E+00 
                   0.0000000E+00 
               
               
                 A4 
                   1.3870308E−05 
                   3.4408218E−05 
                 −4.9852148E−05 
                   7.0704335E−05 
               
               
                 A5 
                 −6.1377377E−06 
                 −9.2976724E−07 
                   3.6346981E−05 
                 −2.8667850E−05 
               
               
                 A6 
                   1.6839811E−06 
                   2.1508636E−06 
                 −2.9076299E−05 
                   3.1860450E−06 
               
               
                 A7 
                 −1.1998101E−07 
                 −9.7173789E−07 
                   1.0451078E−05 
                   1.1265996E−06 
               
               
                 A8 
                 −2.7600084E−08 
                   1.6408518E−07 
                 −1.7136700E−06 
                 −3.2201902E−07 
               
               
                 A9 
                   5.7943768E−09 
                   3.2018083E−08 
                 −2.4313123E−08 
                 −9.6344043E−09 
               
               
                 A10 
                 −1.9503453E−10 
                 −1.8323815E−08 
                   5.7437014E−08 
                   1.0755792E−08 
               
               
                 A11 
                   2.6957849E−10 
                   1.5646972E−09 
                 −7.4019612E−09 
                 −4.2522302E−10 
               
               
                 A12 
                 −6.8858616E−11 
                   5.3622644E−10 
                 −2.5485055E−10 
                 −1.8665796E−10 
               
               
                 A13 
                 −1.0464501E−11 
                 −1.0243464E−10 
                   1.3381511E−10 
                   1.3641831E−11 
               
               
                 A14 
                   3.7334450E−12 
                 −5.6492979E−12 
                 −7.6502144E−12 
                   1.7883771E−12 
               
               
                 A15 
                   5.2379685E−14 
                   2.4053660E−12 
                 −6.7509620E−13 
                 −1.7058365E−13 
               
               
                 A16 
                 −6.9105098E−14 
                 −4.8592127E−14 
                   9.2941619E−14 
                 −8.8014053E−15 
               
               
                 A17 
                   1.2502318E−15 
                 −2.4268411E−14 
                 −1.5973514E−15 
                   1.0183495E−15 
               
               
                 A18 
                   5.5457564E−16 
                   1.2608473E−15 
                 −2.6086785E−16 
                   1.5800993E−17 
               
               
                 A19 
                 −1.1465453E−17 
                   9.7877074E−17 
                   1.5932396E−17 
                 −2.3995132E−18 
               
               
                 A20 
                 −1.6242722E−18 
                 −6.9875921E−18 
                 −2.8644656E−19 
                   1.0828343E−20 
               
               
                   
               
            
           
         
       
     
     Example 5 
       FIG.  6    shows cross sections and schematic movement loci of a zoom lens according to Example 5. The zoom lens according to Example 5 has the same configuration as the outline of the zoom lens according to Example 1. Table 13 shows basic lens data of the zoom lens according to Example 5, Table 14 shows specifications and variable surface distances, Table 15 shows aspherical surface coefficients thereof, and  FIG.  17    shows aberration diagrams. 
     
       
         
           
               
             
               
                 TABLE 13 
               
             
            
               
                   
               
               
                 Example 5 
               
            
           
           
               
               
               
               
               
               
            
               
                 Sn 
                 R 
                 D 
                 Nd 
                 vd 
                 θgF 
               
               
                   
               
            
           
           
               
               
               
               
               
               
            
               
                  1 
                 38.95404 
                 2.050 
                 1.59964 
                 61.17 
                 0.54207 
               
               
                  2 
                 24.29601 
                 6.461 
                   
                   
                   
               
               
                  3 
                 36.16852 
                 2.504 
                 1.95986 
                 29.28 
                 0.60068 
               
               
                  4 
                 19.41637 
                 4.501 
                   
                   
                   
               
               
                 *5 
                 55.83133 
                 2.100 
                 1.85108 
                 40.12 
                 0.56852 
               
               
                 *6 
                 17.07895 
                 11.507 
                   
                   
                   
               
               
                  7 
                 −36.94534 
                 1.410 
                 1.43875 
                 94.66 
                 0.53402 
               
               
                  8 
                 28.85934 
                 5.496 
                 1.95375 
                 32.32 
                 0.59015 
               
               
                  9 
                 7631.46066 
                 DD[9] 
                   
                   
                   
               
               
                   10(St) 
                 ∞ 
                 1.400 
                   
                   
                   
               
               
                 *11  
                 30.78601 
                 7.000 
                 1.78831 
                 49.17 
                 0.55050 
               
               
                 *12  
                 −42.25353 
                 0.100 
                   
                   
                   
               
               
                 13 
                 −72.06911 
                 0.820 
                 1.73493 
                 43.37 
                 0.56861 
               
               
                 14 
                 25.11815 
                 3.000 
                 1.49700 
                 81.54 
                 0.53748 
               
               
                 15 
                 −462.01491 
                 1.248 
                   
                   
                   
               
               
                 16 
                 −446.27718 
                 0.810 
                 1.83102 
                 44.90 
                 0.55785 
               
               
                 17 
                 17.21951 
                 4.402 
                 1.68037 
                 31.40 
                 0.59482 
               
               
                 18 
                 −88.23306 
                 DD[18] 
                   
                   
                   
               
               
                 19 
                 −154.73880 
                 0.810 
                 1.84875 
                 43.13 
                 0.56138 
               
               
                 20 
                 20.58594 
                 4.370 
                 1.59522 
                 67.73 
                 0.54426 
               
               
                 21 
                 −34.11180 
                 1.500 
                   
                   
                   
               
               
                 22 
                 48.07929 
                 0.880 
                 1.85369 
                 42.63 
                 0.56241 
               
               
                 23 
                 18.18623 
                 4.989 
                 1.43875 
                 94.66 
                 0.53402 
               
               
                 24 
                 −46.01267 
                 0.218 
                   
                   
                   
               
               
                 25 
                 26.55479 
                 5.798 
                 1.43875 
                 94.66 
                 0.53402 
               
               
                 26 
                 −22.98546 
                 DD[26] 
                   
                   
                   
               
               
                 *27  
                 −55.09969 
                 2.222 
                 1.85135 
                 40.10 
                 0.56954 
               
               
                 *28  
                 −23.71329 
                 0.178 
                   
                   
                   
               
               
                 29 
                 325.34179 
                 0.890 
                 1.88300 
                 40.76 
                 0.56679 
               
               
                 30 
                 12.39644 
                 5.769 
                 1.49700 
                 81.54 
                 0.53748 
               
               
                 31 
                 −124.40641 
                 0.850 
                 1.88300 
                 40.76 
                 0.56679 
               
               
                 32 
                 27.25871 
                 DD[32] 
                   
                   
                   
               
               
                 33 
                 258.79796 
                 2.209 
                 1.95906 
                 17.47 
                 0.65993 
               
               
                 34 
                 −100.37566 
                 8.821 
                   
                   
                   
               
               
                 35 
                 ∞ 
                 2.850 
                 1.51680 
                 64.20 
                 0.53430 
               
               
                 36 
                 ∞ 
                 1.000 
               
               
                   
               
            
           
         
       
     
     
       
         
           
               
             
               
                 TABLE 14 
               
             
            
               
                   
               
               
                 Example 5 
               
            
           
           
               
               
               
               
               
               
            
               
                   
                   
                 W-Infinity 
                 T-Infinity 
                 W-500 mm 
                 T-500 mm 
               
               
                   
                   
               
            
           
           
               
               
               
               
               
               
            
               
                   
                 Zr 
                 1.000 
                 1.883 
                 — 
                 — 
               
               
                   
                 f 
                 9.267 
                 17.454 
                 9.201 
                 17.171 
               
               
                   
                 FNo. 
                 2.89 
                 3.03 
                 2.89 
                 3.02 
               
               
                   
                 2ω (°) 
                 121.0 
                 76.8 
                 121.4 
                 77.2 
               
               
                   
                 DD[9] 
                 30.402 
                 2.885 
                 30.402 
                 2.885 
               
               
                   
                 DD[18] 
                 3.000 
                 2.366 
                 3.000 
                 2.366 
               
               
                   
                 DD[26] 
                 2.474 
                 6.282 
                 2.603 
                 6.581 
               
               
                   
                 DD[32] 
                 3.408 
                 9.972 
                 3.279 
                 9.673 
               
               
                   
                   
               
            
           
         
       
     
     
       
         
           
               
             
               
                 TABLE 15 
               
               
                   
               
               
                 Example 5 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
            
               
                   
                 Sn 
               
            
           
           
               
               
               
               
               
            
               
                   
                 5 
                 6 
                 11 
                 12 
               
               
                   
               
               
                 KA 
                   l.0000000E+00 
                   l.0000000E+00 
                   l.0000000E+00 
                   l.0000000E+00 
               
               
                 A3 
                   0.0000000E+00 
                   0.0000000E+00 
                   0.0000000E+00 
                   0.0000000E+00 
               
               
                 A4 
                   2.0772371E−04 
                   2.1632508E−04 
                   1.3826615E−05 
                   1.5775499E−05 
               
               
                 A5 
                 −4.1471929E−06 
                 −9.8785219E−07 
                 −6.9889974E−06 
                   1.3419060E−05 
               
               
                 A6 
                 −3.1143594E−06 
                 −3.7514022E−06 
                   1.9974955E−06 
                 −2.7890153E−06 
               
               
                 A7 
                   1.7787261E−07 
                   8.3797182E−08 
                 −8.6684708E−08 
                 −1.0340126E−06 
               
               
                 A8 
                   2.8665480E−08 
                   4.6521246E−08 
                 −4.6580772E−08 
                   5.4165665E−07 
               
               
                 A9 
                 −2.4917792E−09 
                 −1.2711851E−09 
                   2.3780837E−09 
                 −1.5194860E−08 
               
               
                 A10 
                 −1.6995693E−10 
                 −3.9769932E−10 
                   3.5898884E−10 
                 −3.1479767E−08 
               
               
                 A11 
                   2.0579761E−11 
                   1.8314111E−12 
                   4.2716089E−10 
                   4.5115844E−09 
               
               
                 A12 
                   5.0157450E−13 
                   2.4650398E−12 
                 −6.4331176E−11 
                   7.3514117E−10 
               
               
                 A13 
                 −1.0065191E−13 
                   1.4088074E−13 
                 −1.5217439E−11 
                 −1.8892909E−10 
               
               
                 A14 
                 −2.3232230E−17 
                 −1.5818956E−14 
                   2.9853151E−12 
                 −5.1732299E−12 
               
               
                 A15 
                   2.7747474E−16 
                 −1.5650129E−15 
                   1.3900173E−13 
                   3.7904676E−12 
               
               
                 A16 
                 −3.6766558E−18 
                   1.0398961E−16 
                 −4.8689669E−14 
                 −1.0793788E−13 
               
               
                 A17 
                 −3.9172344E−19 
                   6.6253374E−18 
                   4.1371128E−16 
                 −3.5932906E−14 
               
               
                 A18 
                   7.9372975E−21 
                 −4.1542718E−19 
                   3.0715607E−16 
                   2.0185135E−15 
               
               
                 A19 
                   2.1699753E−22 
                 −1.0008167E−20 
                 −8.1902841E−18 
                   1.3831668E−16 
               
               
                 A20 
                 −4.8577618E−24 
                   6.4757165E−22 
                 −4.6179543E−19 
                 −1.0164821E−17 
               
               
                   
               
            
           
           
               
               
            
               
                   
                 Sn 
               
            
           
           
               
               
               
            
               
                   
                 27 
                 28 
               
               
                   
               
               
                 KA 
                   l.0000000E+00 
                   l.0000000E+00 
               
               
                 A3 
                   0.0000000E+00 
                   0.0000000E+00 
               
               
                 A4 
                 −6.1140987E−05 
                   3.2909579E−05 
               
               
                 A5 
                   3.5907112E−05 
                 −2.4137581E−05 
               
               
                 A6 
                 −2.8614464E−05 
                   5.0471046E−06 
               
               
                 A7 
                   1.0698290E−05 
                   7.1457390E−07 
               
               
                 A8 
                 −1.7422518E−06 
                 −3.6422952E−07 
               
               
                 A9 
                 −3.7463861E−08 
                   8.3383377E−09 
               
               
                 A10 
                   5.8692232E−08 
                   1.0747926E−08 
               
               
                 A11 
                 −7.0438545E−09 
                 −8.7608398E−10 
               
               
                 A12 
                 −2.8756471E−10 
                 −1.6344056E−10 
               
               
                 A13 
                   1.2813248E−10 
                   2.0455516E−11 
               
               
                 A14 
                 −7.1396755E−12 
                   1.2309547E−12 
               
               
                 A15 
                 −6.2217890E−13 
                 −2.3174784E−13 
               
               
                 A16 
                   8.8240113E−14 
                 −2.5667183E−15 
               
               
                 A17 
                 −1.8657032E−15 
                   1.3182165E−15 
               
               
                 A18 
                 −2.3729374E−16 
                 −1.9140597E−17 
               
               
                 A19 
                   1.6504872E−17 
                 −3.0171406E−18 
               
               
                 A20 
                 −3.3620442E−19 
                   8.9735427E−20 
               
               
                   
               
            
           
         
       
     
       FIG.  7    shows cross sections and schematic movement loci of a zoom lens according to Example 6. The zoom lens according to Example 6 has the same configuration as the outline of the zoom lens according to Example 1. Table 16 shows basic lens data of the zoom lens according to Example 6, Table 17 shows specifications and variable surface distances, Table 18 shows aspherical surface coefficients thereof, and  FIG.  18    shows aberration diagrams. 
     
       
         
           
               
             
               
                 TABLE 16 
               
             
            
               
                   
               
               
                 Example 6 
               
            
           
           
               
               
               
               
               
               
            
               
                 Sn 
                 R 
                 D 
                 Nd 
                 vd 
                 θgF 
               
               
                   
               
            
           
           
               
               
               
               
               
               
            
               
                  1 
                 44.04000 
                 2.050 
                 1.85150 
                 40.78 
                 0.56958 
               
               
                  2 
                 24.24864 
                 6.981 
                   
                   
                   
               
               
                 *3 
                 154.83912 
                 2.504 
                 1.69350 
                 53.18 
                 0.54831 
               
               
                 *4 
                 20.19733 
                 6.438 
                   
                   
                   
               
               
                 *5 
                 29.09945 
                 2.100 
                 1.85108 
                 40.12 
                 0.56852 
               
               
                 *6 
                 17.13338 
                 8.955 
                   
                   
                   
               
               
                  7 
                 −37.39517 
                 1.120 
                 1.43875 
                 94.66 
                 0.53402 
               
               
                  8 
                 28.39216 
                 5.078 
                 1.95375 
                 32.32 
                 0.59015 
               
               
                  9 
                 474.79304 
                 DD[9] 
                   
                   
                   
               
               
                   10(St) 
                 ∞ 
                 1.300 
                   
                   
                   
               
               
                 *11  
                 31.62408 
                 7.000 
                 1.80998 
                 40.95 
                 0.56644 
               
               
                 *12  
                 −45.95742 
                 0.409 
                   
                   
                   
               
               
                 13 
                 −79.85552 
                 0.820 
                 1.72047 
                 34.71 
                 0.58350 
               
               
                 14 
                 24.37152 
                 2.379 
                 1.49700 
                 81.54 
                 0.53748 
               
               
                 15 
                 −549.86003 
                 1.049 
                   
                   
                   
               
               
                 16 
                 −574.16402 
                 0.790 
                 1.81600 
                 46.62 
                 0.55682 
               
               
                 17 
                 16.36729 
                 3.437 
                 1.67270 
                 32.10 
                 0.59891 
               
               
                 18 
                 −107.22047 
                 DD[18] 
                   
                   
                   
               
               
                 19 
                 −156.44300 
                 0.810 
                 1.83481 
                 42.72 
                 0.56486 
               
               
                 20 
                 21.67065 
                 4.205 
                 1.59522 
                 67.73 
                 0.54426 
               
               
                 21 
                 −36.75822 
                 2.097 
                   
                   
                   
               
               
                 22 
                 45.85301 
                 0.880 
                 1.83481 
                 42.72 
                 0.56486 
               
               
                 23 
                 18.47924 
                 4.871 
                 1.43875 
                 94.66 
                 0.53402 
               
               
                 24 
                 −55.78370 
                 0.101 
                   
                   
                   
               
               
                 25 
                 28.05382 
                 5.706 
                 1.43875 
                 94.66 
                 0.53402 
               
               
                 26 
                 −22.93917 
                 DD[26] 
                   
                   
                   
               
               
                 *27  
                 −57.58300 
                 2.623 
                 1.85135 
                 40.10 
                 0.56954 
               
               
                 *28  
                 −23.68806 
                 0.100 
                   
                   
                   
               
               
                 29 
                 160.08829 
                 0.890 
                 1.88300 
                 40.76 
                 0.56679 
               
               
                 30 
                 12.00014 
                 6.016 
                 1.49700 
                 81.54 
                 0.53748 
               
               
                 31 
                 −158.21498 
                 0.850 
                 1.88300 
                 40.76 
                 0.56679 
               
               
                 32 
                 29.96082 
                 DD[32] 
                   
                   
                   
               
               
                 33 
                 141.85857 
                 2.380 
                 1.95906 
                 17.47 
                 0.65993 
               
               
                 34 
                 −111.48733 
                 9.154 
                   
                   
                   
               
               
                 35 
                 ∞ 
                 2.850 
                 1.51680 
                 64.20 
                 0.53430 
               
               
                 36 
                 ∞ 
                 1.000 
               
               
                   
               
            
           
         
       
     
     
       
         
           
               
             
               
                 TABLE 17 
               
             
            
               
                   
               
               
                 Example 6 
               
            
           
           
               
               
               
               
               
               
            
               
                   
                   
                 W-Infinity 
                 T-Infinity 
                 W-500 mm 
                 T-500 mm 
               
               
                   
                   
               
            
           
           
               
               
               
               
               
               
            
               
                   
                 Zr 
                 1.000 
                 1.883 
                 — 
                 — 
               
               
                   
                 f 
                 8.238 
                 15.516 
                 8.196 
                 15.326 
               
               
                   
                 FNo. 
                 2.88 
                 2.88 
                 2.88 
                 2.87 
               
               
                   
                 2ω (°) 
                 127.0 
                 82.8 
                 127.2 
                 83.2 
               
               
                   
                 DD[9] 
                 29.648 
                 2.884 
                 29.648 
                 2.884 
               
               
                   
                 DD[18] 
                 3.490 
                 2.833 
                 3.490 
                 2.833 
               
               
                   
                 DD[26] 
                 2.000 
                 7.132 
                 2.127 
                 7.452 
               
               
                   
                 DD[32] 
                 3.432 
                 8.874 
                 3.305 
                 8.555 
               
               
                   
                   
               
            
           
         
       
     
     
       
         
           
               
             
               
                 TABLE 18 
               
               
                   
               
               
                 Example 6 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
            
               
                   
                 Sn 
               
            
           
           
               
               
               
               
               
            
               
                   
                 3 
                 4 
                 5 
                 6 
               
               
                   
               
               
                 KA 
                   l.0000000E+00 
                   l.0000000E+00 
                   l.0000000E+00 
                   l.0000000E+00 
               
               
                 A3 
                   0.0000000E+00 
                   0.0000000E+00 
                   0.0000000E+00 
                   0.0000000E+00 
               
               
                 A4 
                   2.1423762E−04 
                   2.1440967E−04 
                 −4.4333454E−05 
                 −4.2166156E−05 
               
               
                 A5 
                 −1.2860612E−05 
                 −1.4833935E−05 
                 −6.7407497E−06 
                 −1.4656569E−05 
               
               
                 A6 
                 −2.2230835E−06 
                 −1.6725069E−06 
                   5.7894923E−07 
                   3.2751332E−06 
               
               
                 A7 
                   2.2005520E−07 
                 −2.6036575E−09 
                   1.2265825E−07 
                 −7.4943007E−09 
               
               
                 A8 
                   9.9925805E−09 
                   1.2874461E−08 
                 −8.0755244E−09 
                 −7.4707534E−08 
               
               
                 A9 
                 −1.7282871E−09 
                   2.7825445E−09 
                 −1.2695205E−09 
                   7.6514628E−09 
               
               
                 A10 
                 −1.9846229E−12 
                 −2.0831625E−10 
                   1.0802086E−10 
                   8.2849948E−10 
               
               
                 A11 
                   7.7561162E−12 
                 −3.4586025E−11 
                   1.0254071E−11 
                 −1.6617348E−10 
               
               
                 A12 
                 −1.7228286E−13 
                   2.5251030E−12 
                 −1.1173814E−12 
                 −3.0949327E−12 
               
               
                 A13 
                 −2.0928965E−14 
                   2.0736951E−13 
                 −5.4518550E−14 
                   1.7223681E−12 
               
               
                 A14 
                   7.7750415E−16 
                 −1.6062516E−14 
                   6.6420253E−15 
                 −2.5351650E−14 
               
               
                 A15 
                   3.3579792E−17 
                 −6.9067559E−16 
                   1.6104324E−16 
                 −9.7966289E−15 
               
               
                 A16 
                 −1.6239313E−18 
                   5.3904155E−17 
                 −2.1276004E−17 
                   3.2648525E−16 
               
               
                 A17 
                 −2.9466587E−20 
                   1.2233749E−18 
                 −2.3466829E−19 
                   2.9236360E−17 
               
               
                 A18 
                   1.7139629E−21 
                 −9.1154381E−20 
                   3.4456476E−20 
                 −1.3248173E−18 
               
               
                 A19 
                   1.0874543E−23 
                 −9.0037505E−22 
                   1.2873223E−22 
                 −3.5650707E−20 
               
               
                 A20 
                 −7.3870423E−25 
                   6.1179838E−23 
                 −2.2189480E−23 
                   1.9101090E−21 
               
               
                   
               
            
           
           
               
               
            
               
                   
                 Sn 
               
            
           
           
               
               
               
               
               
            
               
                   
                 11 
                 12 
                 27 
                 28 
               
               
                   
               
               
                 KA 
                   l.0000000E+00 
                   l.0000000E+00 
                   l.0000000E+00 
                   l.0000000E+00 
               
               
                 A3 
                   0.0000000E+00 
                   0.0000000E+00 
                   0.0000000E+00 
                   0.0000000E+00 
               
               
                 A4 
                   1.9849890E−05 
                   3.2218499E−05 
                   1.091803 8E−05 
                   1.1989134E−04 
               
               
                 A5 
                 −7.6007113E−06 
                 −1.1886776E−05 
                 −6.0674016E−06 
                 −3.3785499E−05 
               
               
                 A6 
                 −6.9919185E−07 
                   8.9983427E−06 
                 −1.1736718E−06 
                   9.2147691E−07 
               
               
                 A7 
                   8.4763986E−07 
                 −2.4027339E−06 
                   2.7572327E−07 
                   1.6475087E−06 
               
               
                 A8 
                   7.2612963E−08 
                 −1.1557586E−07 
                   2.5619232E−08 
                 −2.5134088E−07 
               
               
                 A9 
                 −8.4585482E−08 
                   1.7378028E−07 
                 −8.4908382E−09 
                 −3.2029399E−08 
               
               
                 A10 
                   5.3796563E−10 
                 −1.8299834E−08 
                   1.0637345E−11 
                   9.6163797E−09 
               
               
                 A11 
                   4.5791792E−09 
                 −4.5748454E−09 
                   1.7020255E−10 
                   1.1581511E−10 
               
               
                 A12 
                 −3.0070219E−10 
                   9.1518481E−10 
                 −1.2272838E−11 
                 −1.7967278E−10 
               
               
                 A13 
                 −1.2826106E−10 
                   4.4411464E−11 
                 −2.1763795E−12 
                   5.7956884E−12 
               
               
                 A14 
                   1.2817630E−11 
                 −1.9280095E−11 
                   2.8328002E−13 
                   1.8364760E−12 
               
               
                 A15 
                   1.9257080E−12 
                   3.7346071E−13 
                   1.7104935E−14 
                 −1.0312909E−13 
               
               
                 A16 
                 −2.3826486E−13 
                   1.7938670E−13 
                 −3.1210304E−15 
                 −9.8248294E−15 
               
               
                 A17 
                 −1.4911582E−14 
                 −9.1401909E−15 
                 −7.5201681E−17 
                   7.0088430E−16 
               
               
                 A18 
                   2.1374327E−15 
                 −6.4700736E−16 
                   1.7567024E−17 
                   2.1530224E−17 
               
               
                 A19 
                   4.7350473E−17 
                   5.1025190E−17 
                   1.4141081E−19 
                 −1.7689095E−18 
               
               
                 A20 
                 −7.6372357E−18 
                 −5.4238076E−19 
                 −4.0498652E−20 
                   2.2781682E−22 
               
               
                   
               
            
           
         
       
     
     Example 7 
       FIG.  8    shows cross sections and schematic movement loci of a zoom lens according to Example 7. The zoom lens according to Example 7 consists of a first lens group G 1  having a negative refractive power, a second lens group G 2  having a positive refractive power, a third lens group G 3  having a positive refractive power, a fourth lens group G 4  having a positive refractive power, a fifth lens group G 5  having a negative refractive power, and a sixth lens group G 6  having a positive refractive power in order from the object side to the image side. During zooming from the wide-angle end to the telephoto end, the first lens group G 1  moves to the image side, the second lens group G 2 , the third lens group G 3 , the fourth lens group G 4 , and the fifth lens group G 5  move to the object side, and the sixth lens group G 6  is fixed on to the image plane Sim. Thus, all the distances between the adjacent lens groups change. The first lens group G 1  consists of five lenses such as lenses L 11  to L 15  in order from the object side to the image side, the second lens group G 2  consists of an aperture stop St and five lenses such as lenses L 21  to L 25  in order from the object side to the image side, the third lens group G 3  consists of two lenses such as lenses L 31  and L 32  in order from the object side to the image side, the fourth lens group G 4  consists of three lenses such as lenses L 41  to L 43  in order from the object side to the image side, the fifth lens group G 5  consists of four lenses such as lenses L 51  to L 54  in order from the object side to the image side, and the sixth lens group G 6  consists of one lens such as a lens L 61 . The focusing lens group Gf is the entire fifth lens group G 5 . The outline of the zoom lens according to Example 7 has been described above. 
     Table 19 shows basic lens data of the zoom lens according to Example 7, Table 20 shows specifications and variable surface distances, Table 21 shows aspherical surface coefficients thereof, and  FIG.  19    shows aberration diagrams. 
     
       
         
           
               
             
               
                 TABLE 19 
               
             
            
               
                   
               
               
                 Example 7 
               
            
           
           
               
               
               
               
               
               
            
               
                 Sn 
                 R 
                 D 
                 Nd 
                 vd 
                 θgF 
               
               
                   
               
            
           
           
               
               
               
               
               
               
            
               
                  1 
                 41.41349 
                 2.050 
                 1.85150 
                 40.78 
                 0.56958 
               
               
                  2 
                 23.68980 
                 7.769 
                   
                   
                   
               
               
                 *3 
                 199.98788 
                 2.504 
                 1.69350 
                 53.18 
                 0.54831 
               
               
                 *4 
                 18.73877 
                 6.380 
                   
                   
                   
               
               
                 *5 
                 28.19466 
                 2.100 
                 1.85108 
                 40.12 
                 0.56852 
               
               
                 *6 
                 17.30816 
                 8.877 
                   
                   
                   
               
               
                  7 
                 −40.03562 
                 1.120 
                 1.43875 
                 94.66 
                 0.53402 
               
               
                  8 
                 27.48902 
                 4.908 
                 1.95375 
                 32.32 
                 0.59015 
               
               
                  9 
                 786.83703 
                 DD[9] 
                   
                   
                   
               
               
                   10(St) 
                 ∞ 
                 1.300 
                   
                   
                   
               
               
                 *11  
                 26.32190 
                 4.783 
                 1.69350 
                 53.18 
                 0.54831 
               
               
                 *12  
                 −38.38722 
                 0.349 
                   
                   
                   
               
               
                 13 
                 −67.29617 
                 0.820 
                 1.73623 
                 52.87 
                 0.54689 
               
               
                 14 
                 24.12365 
                 2.232 
                 1.59522 
                 67.73 
                 0.54426 
               
               
                 15 
                 206.47051 
                 0.400 
                   
                   
                   
               
               
                 16 
                 −317.40797 
                 0.790 
                 1.83256 
                 44.74 
                 0.55814 
               
               
                 17 
                 17.26597 
                 3.377 
                 1.64769 
                 33.79 
                 0.59393 
               
               
                 18 
                 −92.86424 
                 DD[18] 
                   
                   
                   
               
               
                 19 
                 −168.26505 
                 0.810 
                 1.83838 
                 42.57 
                 0.56382 
               
               
                 20 
                 20.78142 
                 4.333 
                 1.59522 
                 67.73 
                 0.54426 
               
               
                 21 
                 −34.61154 
                 DD[21] 
                   
                   
                   
               
               
                 22 
                 42.21395 
                 0.880 
                 1.82973 
                 43.48 
                 0.56192 
               
               
                 23 
                 18.02672 
                 5.040 
                 1.43875 
                 94.66 
                 0.53402 
               
               
                 24 
                 −48.65002 
                 0.154 
                   
                   
                   
               
               
                 25 
                 26.16490 
                 5.758 
                 1.43875 
                 94.66 
                 0.53402 
               
               
                 26 
                 −24.22834 
                 DD[26] 
                   
                   
                   
               
               
                 *27  
                 −61.27599 
                 2.306 
                 1.85135 
                 40.10 
                 0.56954 
               
               
                 *28  
                 −23.15576 
                 0.154 
                   
                   
                   
               
               
                 29 
                 139.18827 
                 0.895 
                 1.88300 
                 40.76 
                 0.56679 
               
               
                 30 
                 12.43898 
                 5.652 
                 1.49700 
                 81.54 
                 0.53748 
               
               
                 31 
                 −594.76701 
                 0.850 
                 1.88300 
                 40.76 
                 0.56679 
               
               
                 32 
                 25.22333 
                 DD[32] 
                   
                   
                   
               
               
                 33 
                 295.93334 
                 2.145 
                 1.95906 
                 17.47 
                 0.65993 
               
               
                 34 
                 −107.09171 
                 8.947 
                   
                   
                   
               
               
                 35 
                 ∞ 
                 2.850 
                 1.51680 
                 64.20 
                 0.53430 
               
               
                 36 
                 ∞ 
                 0.999 
               
               
                   
               
            
           
         
       
     
     
       
         
           
               
             
               
                 TABLE 20 
               
             
            
               
                   
               
               
                 Example 7 
               
            
           
           
               
               
               
               
               
               
            
               
                   
                   
                 W-Infinity 
                 T-Infinity 
                 W-500 mm 
                 T-500 mm 
               
               
                   
                   
               
            
           
           
               
               
               
               
               
               
            
               
                   
                 Zr 
                 1.000 
                 1.883 
                 — 
                 — 
               
               
                   
                 f 
                 8.236 
                 15.513 
                 8.191 
                 15.326 
               
               
                   
                 FNo. 
                 2.89 
                 2.88 
                 2.71 
                 2.86 
               
               
                   
                 2ω (°) 
                 125.8 
                 83.0 
                 126.0 
                 83.4 
               
               
                   
                 DD[9] 
                 27.461 
                 2.812 
                 27.461 
                 2.812 
               
               
                   
                 DD[18] 
                 3.629 
                 2.866 
                 3.629 
                 2.866 
               
               
                   
                 DD[21] 
                 1.800 
                 1.907 
                 1.800 
                 1.907 
               
               
                   
                 DD[26] 
                 2.304 
                 5.348 
                 2.432 
                 5.632 
               
               
                   
                 DD[32] 
                 3.721 
                 11.312 
                 3.593 
                 11.028 
               
               
                   
                   
               
            
           
         
       
     
     
       
         
           
               
             
               
                 TABLE 21 
               
               
                   
               
               
                 Example 7 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
               
               
               
            
               
                 Sn 
                 3 
                 4 
                 5 
                 6 
               
               
                   
               
               
                 KA 
                 1.0000000 
                 1.0000000 
                 1.0000000 
                  1.0000000E+00 
               
               
                   
                 E+00 
                 E+00 
                 E+00 
                   
               
               
                 A3 
                 0.0000000 
                 0.0000000 
                 0.0000000 
                  0.0000000E+00 
               
               
                   
                 E+00 
                 E+00 
                 E+00 
                   
               
               
                 A4 
                 1.8553228 
                 1.3000184 
                 −1.4792318 
                 −1.5306723E−04 
               
               
                   
                 E−04 
                 E−04 
                 E−04 
                   
               
               
                 A5 
                 −1.1851358 
                 −8.4069821 
                 −1.5544082 
                 −1.4372529E−05 
               
               
                   
                 E−05 
                 E−06 
                 E−05 
                   
               
               
                 A6 
                 −1.2659055 
                 −6.7543398 
                 4.8362473 
                  6.7974853E−06 
               
               
                   
                 E−06 
                 E−07 
                 E−06 
                   
               
               
                 A7 
                 1.8761495 
                 −8.0505450 
                 2.4245530 
                 −1.1029997E−08 
               
               
                   
                 E−07 
                 E−08 
                 E−07 
                   
               
               
                 A8 
                 −2.0805031 
                 1.8330809 
                 −8.8361107 
                 −1.4038291E−07 
               
               
                   
                 E−10 
                 E−08 
                 E−08 
                   
               
               
                 A9 
                 −1.3997685 
                 2.7355343 
                 −2.3093577 
                  7.3217584E−09 
               
               
                   
                 E−09 
                 E−09 
                 E−09 
                   
               
               
                 A10 
                 5.6155111 
                 −5.0180351 
                 9.7931536 
                  1.5624812E−09 
               
               
                   
                 E−11 
                 E−10 
                 E−10 
                   
               
               
                 A11 
                 6.0301820 
                 −2.6844337 
                 1.5816741 
                 −1.5622836E−10 
               
               
                   
                 E−12 
                 E−11 
                 E−11 
                   
               
               
                 A12 
                 −3.6807346 
                 6.0545668 
                 −6.9687921 
                 −8.3530659E−12 
               
               
                   
                 E−13 
                 E−12 
                 E−12 
                   
               
               
                 A13 
                 −1.5795700 
                 1.3868447 
                 −7.0811183 
                  1.6187204E−12 
               
               
                   
                 E−14 
                 E−13 
                 E−14 
                   
               
               
                 A14 
                 1.1731402 
                 −3.8440545 
                 3.1516817 
                  3.7421809E−16 
               
               
                   
                 E−15 
                 E−14 
                 E−14 
                   
               
               
                 A15 
                 2.4898128 
                 −4.1488753 
                 1.8283073 
                 −9.2467812E−15 
               
               
                   
                 E−17 
                 E−16 
                 E−16 
                   
               
               
                 A16 
                 −2.0814946 
                 1.3530839 
                 −8.6548556 
                  2.4016862E−16 
               
               
                   
                 E−18 
                 E−16 
                 E−17 
                   
               
               
                 A17 
                 −2.1736241 
                 6.8958764 
                 −2.3636332 
                  2.7746103E−17 
               
               
                   
                 E−20 
                 E−19 
                 E−19 
                   
               
               
                 A18 
                 1.9771119 
                 −2.5075486 
                 1.3073685 
                 −1.1489803E−18 
               
               
                   
                 E−21 
                 E−19 
                 E−19 
                   
               
               
                 A19 
                 8.0896630 
                 −5.0042124 
                 1.1194514 
                 −3.4007141E−20 
               
               
                   
                 E−24 
                 E−22 
                 E−22 
                   
               
               
                 A20 
                 −7.8808961 
                 1.9150718 
                 −8.3081387 
                  1.7533308E−21 
               
               
                   
                 E−25 
                 E−22 
                 E−23 
               
               
                   
               
               
                 Sn 
                 11 
                 12 
                 27 
                 28 
               
               
                   
               
               
                 KA 
                 1.0000000 
                 1.0000000 
                 1.0000000 
                  1.0000000E+00 
               
               
                   
                 E+00 
                 E+00 
                 E+00 
                   
               
               
                 A3 
                 0.0000000 
                 0.0000000 
                 0.0000000 
                  0.0000000E+00 
               
               
                   
                 E+00 
                 E+00 
                 E+00 
                   
               
               
                 A4 
                 1.2953078 
                 3.8187078 
                 −5.3074031 
                  6.4427925E−05 
               
               
                   
                 E−05 
                 E−05 
                 E−05 
                   
               
               
                 A5 
                 −1.1431193 
                 −3.9115044 
                 3.8936446 
                 −2.5777359E−05 
               
               
                   
                 E−05 
                 E−06 
                 E−05 
                   
               
               
                 A6 
                 3.4816488 
                 2.0305904 
                 −2.8717510 
                  3.6642664E−06 
               
               
                   
                 E−06 
                 E−06 
                 E−05 
                   
               
               
                 A7 
                 3.0023422 
                 −6.5395269 
                 1.0298252 
                  9.4260637E−07 
               
               
                   
                 E−07 
                 E−07 
                 E−05 
                   
               
               
                 A8 
                 −2.4371425 
                 1.4178091 
                 −1.7426583 
                 −3.5149342E−07 
               
               
                   
                 E−07 
                 E−07 
                 E−06 
                   
               
               
                 A9 
                 −5.4670342 
                 1.4350928 
                 −1.8365173 
                 −3.2612970E−09 
               
               
                   
                 E−09 
                 E−08 
                 E−08 
                   
               
               
                 A10 
                 1.1260902 
                 −1.6124062 
                 5.8733961 
                  1.2010914E−08 
               
               
                   
                 E−08 
                 E−08 
                 E−08 
                   
               
               
                 A11 
                 2.2763050 
                 2.1475395 
                 −7.5510424 
                 −5.5705836E−10 
               
               
                   
                 E−10 
                 E−09 
                 E−09 
                   
               
               
                 A12 
                 −4.0397419 
                 4.4367988 
                 −2.8707194 
                 −2.1914572E−10 
               
               
                   
                 E−10 
                 E−10 
                 E−10 
                   
               
               
                 A13 
                 −2.2081897 
                 −1.1405504 
                 1.3616276 
                  1.5330299E−11 
               
               
                   
                 E−12 
                 E−10 
                 E−10 
                   
               
               
                 A14 
                 9.5557490 
                 −3.5033932 
                 −7.1855743 
                  2.2915109E−12 
               
               
                   
                 E−12 
                 E−12 
                 E−12 
                   
               
               
                 A15 
                 −1.2027268 
                 2.5423780 
                 −6.9735936 
                 −1.8377007E−13 
               
               
                   
                 E−13 
                 E−12 
                 E−13 
                   
               
               
                 A16 
                 −1.2940446 
                 −7.6845163 
                 8.9041920 
                 −1.3387991E−14 
               
               
                   
                 E−13 
                 E−14 
                 E−14 
                   
               
               
                 A17 
                 2.7726178 
                 −2.5146835 
                 −1.4816220 
                  1.0759703E−15 
               
               
                   
                 E−15 
                 E−14 
                 E−15 
                   
               
               
                 A18 
                 9.0086136 
                 1.4584662 
                 −2.4309853 
                  3.8600887E−17 
               
               
                   
                 E−16 
                 E−15 
                 E−16 
                   
               
               
                 A19 
                 −1.6533706 
                 1.0023624 
                 1.5679569 
                 −2.5074494E−18 
               
               
                   
                 E−17 
                 E−16 
                 E−17 
                   
               
               
                 A20 
                 −2.4778335 
                 −7.5577201 
                 −3.2059225 
                 −3.7003863E−20 
               
               
                   
                 E−18 
                 E−18 
                 E−19 
               
               
                   
               
            
           
         
       
     
     Example 8 
       FIG.  9    shows cross sections and schematic movement loci of a zoom lens according to 
     Example 8. The zoom lens of Example  8  has the same configuration as the outline of the zoom lens according to Example 7 except that a third lens group G 3  has a negative refractive power. Table 22 shows basic lens data of the zoom lens according to Example 8, Table 23 shows specifications and variable surface distances, Table 24 shows aspherical surface coefficients thereof, and  FIG.  20    shows aberration diagrams. 
     
       
         
           
               
             
               
                 TABLE 22 
               
             
            
               
                   
               
               
                 Example 8 
               
            
           
           
               
               
               
               
               
               
            
               
                 Sn 
                 R 
                 D 
                 Nd 
                 vd 
                 θgF 
               
               
                   
               
            
           
           
               
               
               
               
               
               
            
               
                  1 
                 41.28848 
                 2.050 
                 1.85150 
                 40.78 
                 0.56958 
               
               
                  2 
                 23.79980 
                 7.687 
                   
                   
                   
               
               
                 *3 
                 180.00350 
                 2.504 
                 1.69350 
                 53.18 
                 0.54831 
               
               
                 *4 
                 18.77514 
                 6.430 
                   
                   
                   
               
               
                 *5 
                 28.05765 
                 2.100 
                 1.85108 
                 40.12 
                 0.56852 
               
               
                 *6 
                 17.24984 
                 8.964 
                   
                   
                   
               
               
                  7 
                 −37.41452 
                 1.120 
                 1.43875 
                 94.66 
                 0.53402 
               
               
                  8 
                 27.57374 
                 4.978 
                 1.95375 
                 32.32 
                 0.59015 
               
               
                  9 
                 717.69516 
                 DD[9] 
                   
                   
                   
               
               
                   10(St) 
                 ∞ 
                 1.300 
                   
                   
                   
               
               
                 *11  
                 25.89581 
                 5.160 
                 1.69350 
                 53.18 
                 0.54831 
               
               
                 *12  
                 −37.94826 
                 0.245 
                   
                   
                   
               
               
                 13 
                 −69.40994 
                 0.820 
                 1.73135 
                 51.51 
                 0.55044 
               
               
                 14 
                 25.15690 
                 2.208 
                 1.59522 
                 67.73 
                 0.54426 
               
               
                 15 
                 235.28308 
                 0.400 
                   
                   
                   
               
               
                 16 
                 −373.54363 
                 0.807 
                 1.82926 
                 45.07 
                 0.55751 
               
               
                 17 
                 17.53423 
                 4.254 
                 1.64769 
                 33.79 
                 0.59393 
               
               
                 18 
                 −88.29190 
                 DD[18] 
                   
                   
                   
               
               
                 19 
                 −100.00000 
                 0.810 
                 1.83438 
                 41.71 
                 0.56655 
               
               
                 20 
                 20.78142 
                 4.317 
                 1.59522 
                 67.73 
                 0.54426 
               
               
                 21 
                 −36.00000 
                 DD[21] 
                   
                   
                   
               
               
                 22 
                 42.27530 
                 0.958 
                 1.83348 
                 44.64 
                 0.55836 
               
               
                 23 
                 18.00679 
                 5.050 
                 1.43875 
                 94.66 
                 0.53402 
               
               
                 24 
                 −47.63396 
                 0.153 
                   
                   
                   
               
               
                 25 
                 26.18926 
                 5.898 
                 1.43875 
                 94.66 
                 0.53402 
               
               
                 26 
                 −24.44917 
                 DD[26] 
                   
                   
                   
               
               
                 *27  
                 −61.27006 
                 2.391 
                 1.85135 
                 40.10 
                 0.56954 
               
               
                 *28  
                 −23.18567 
                 0.150 
                   
                   
                   
               
               
                 29 
                 139.58321 
                 0.904 
                 1.88300 
                 40.76 
                 0.56679 
               
               
                 30 
                 12.31147 
                 5.630 
                 1.49700 
                 81.54 
                 0.53748 
               
               
                 31 
                 −712.05790 
                 0.850 
                 1.88300 
                 40.76 
                 0.56679 
               
               
                 32 
                 25.13792 
                 DD[32] 
                   
                   
                   
               
               
                 33 
                 235.51432 
                 2.299 
                 1.95906 
                 17.47 
                 0.65993 
               
               
                 34 
                 −94.05982 
                 8.956 
                   
                   
                   
               
               
                 35 
                 ∞ 
                 2.850 
                 1.51680 
                 64.20 
                 0.53430 
               
               
                 36 
                 ∞ 
                 1.000 
               
               
                   
               
            
           
         
       
     
     
       
         
           
               
             
               
                 TABLE 23 
               
             
            
               
                   
               
               
                 Example 8 
               
            
           
           
               
               
               
               
               
               
            
               
                   
                   
                 W-Infinity 
                 T-Infinity 
                 W-500 mm 
                 T-500 mm 
               
               
                   
                   
               
            
           
           
               
               
               
               
               
               
            
               
                   
                 Zr 
                 1.000 
                 1.883 
                 — 
                 — 
               
               
                   
                 f 
                 8.237 
                 15.515 
                 8.193 
                 15.326 
               
               
                   
                 FNo. 
                 2.88 
                 2.88 
                 2.88 
                 2.87 
               
               
                   
                 2ω (°) 
                 125.8 
                 82.4 
                 126.0 
                 82.8 
               
               
                   
                 DD[9] 
                 28.542 
                 2.827 
                 28.542 
                 2.827 
               
               
                   
                 DD[18] 
                 3.443 
                 3.029 
                 3.443 
                 3.029 
               
               
                   
                 DD[21] 
                 1.800 
                 1.572 
                 1.800 
                 1.572 
               
               
                   
                 DD[26] 
                 2.516 
                 6.639 
                 2.646 
                 6.946 
               
               
                   
                 DD[32] 
                 3.698 
                 10.127 
                 3.568 
                 9.820 
               
               
                   
                   
               
            
           
         
       
     
     
       
         
           
               
             
               
                 TABLE 24 
               
               
                   
               
               
                 Example 8 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
               
               
               
            
               
                 Sn 
                 3 
                 4 
                 5 
                 6 
               
               
                   
               
               
                 KA 
                 1.0000000 
                 1.0000000 
                 1.0000000 
                  1.0000000E+00 
               
               
                   
                 E+00 
                 E+00 
                 E+00 
                   
               
               
                 A3 
                 0.0000000 
                 0.0000000 
                 0.0000000 
                  0.0000000E+00 
               
               
                   
                 E+00 
                 E+00 
                 E+00 
                   
               
               
                 A4 
                 1.7817121 
                 1.2444958 
                 −1.5587216 
                 −1.6218411E−04 
               
               
                   
                 E−04 
                 E−04 
                 E−04 
                   
               
               
                 A5 
                 −1.1802753 
                 −8.9427786 
                 −1.6729001 
                 −1.5553424E−05 
               
               
                   
                 E−05 
                 E−06 
                 E−05 
                   
               
               
                 A6 
                 −1.1501893 
                 −6.1712191 
                 4.9713132 
                  6.9411257E−06 
               
               
                   
                 E−06 
                 E−07 
                 E−06 
                   
               
               
                 A7 
                 1.8547406 
                 −6.5020599 
                 2.6695675 
                  9.1785685E−09 
               
               
                   
                 E−07 
                 E−08 
                 E−07 
                   
               
               
                 A8 
                 −1.1206100 
                 1.8976916 
                 −8.9674357 
                 −1.4072804E−07 
               
               
                   
                 E−09 
                 E−08 
                 E−08 
                   
               
               
                 A9 
                 −1.3787239 
                 2.5137525 
                 −2.5904793 
                  7.0965568E−09 
               
               
                   
                 E−09 
                 E−09 
                 E−09 
                   
               
               
                 A10 
                 5.9938885 
                 −5.1833720 
                 9.8728804 
                  1.5282655E−09 
               
               
                   
                 E−11 
                 E−10 
                 E−10 
                   
               
               
                 A11 
                 5.9228813 
                 −2.4987063 
                 1.7759970 
                 −1.5463453E−10 
               
               
                   
                 E−12 
                 E−11 
                 E−11 
                   
               
               
                 A12 
                 −3.7586298 
                 6.1853726 
                 −7.0000889 
                 −7.6510182E−12 
               
               
                   
                 E−13 
                 E−12 
                 E−12 
                   
               
               
                 A13 
                 −1.5476728 
                 1.2913358 
                 −7.9095186 
                  1.6117876E−12 
               
               
                   
                 E−14 
                 E−13 
                 E−14 
                   
               
               
                 A14 
                 1.1765419 
                 −3.8945337 
                 3.1594679 
                 −6.3305179E−15 
               
               
                   
                 E−15 
                 E−14 
                 E−14 
                   
               
               
                 A15 
                 2.4343431 
                 −3.8518743 
                 2.0414552 
                 −9.2294545E−15 
               
               
                   
                 E−17 
                 E−16 
                 E−16 
                   
               
               
                 A16 
                 −2.0644460 
                 1.3624220 
                 −8.6659745 
                  2.7514649E−16 
               
               
                   
                 E−18 
                 E−16 
                 E−17 
                   
               
               
                 A17 
                 −2.1213337 
                 6.3836977 
                 −2.6670701 
                  2.7725498E−17 
               
               
                   
                 E−20 
                 E−19 
                 E−19 
                   
               
               
                 A18 
                 1.9449063 
                 −2.5128020 
                 1.3080572 
                 −1.2447243E−18 
               
               
                   
                 E−21 
                 E−19 
                 E−19 
                   
               
               
                 A19 
                 7.8832520 
                 −4.6287962 
                 1.3029291 
                 −3.4001309E−20 
               
               
                   
                 E−24 
                 E−22 
                 E−22 
                   
               
               
                 A20 
                 −7.7021012 
                 1.9115709 
                 −8.3081387 
                  1.8610909E−21 
               
               
                   
                 E−25 
                 E−22 
                 E−23 
               
               
                   
               
               
                 Sn 
                 11 
                 12 
                 27 
                 28 
               
               
                   
               
               
                 KA 
                 1.0000000 
                 1.0000000 
                 1.0000000 
                  1.0000000E+00 
               
               
                   
                 E+00 
                 E+00 
                 E+00 
                   
               
               
                 A3 
                 0.0000000 
                 0.0000000 
                 0.0000000 
                  0.0000000E+00 
               
               
                   
                 E+00 
                 E+00 
                 E+00 
                   
               
               
                 A4 
                 1.4210051 
                 4.3913590 
                 −5.5075379 
                  6.2703642E−05 
               
               
                   
                 E−05 
                 E−05 
                 E−05 
                   
               
               
                 A5 
                 −8.3583091 
                 −6.2397130 
                 3.6892406 
                 −2.7867151E−05 
               
               
                   
                 E−06 
                 E−06 
                 E−05 
                   
               
               
                 A6 
                 2.6445290 
                 2.0885726 
                 −2.8501178 
                  3.9373888E−06 
               
               
                   
                 E−06 
                 E−06 
                 E−05 
                   
               
               
                 A7 
                 2.3587006 
                 −4.6298237 
                 1.0455105 
                  1.0595667E−06 
               
               
                   
                 E−08 
                 E−07 
                 E−05 
                   
               
               
                 A8 
                 −1.4699944 
                 1.4356892 
                 −1.7515840 
                 −3.5913547E−07 
               
               
                   
                 E−07 
                 E−07 
                 E−06 
                   
               
               
                 A9 
                 8.3253169 
                 2.4151710 
                 −2.5022612 
                 −7.3773982E−09 
               
               
                   
                 E−09 
                 E−09 
                 E−08 
                   
               
               
                 A10 
                 5.8951528 
                 −1.6370228 
                 5.8893509 
                  1.1939750E−08 
               
               
                   
                 E−09 
                 E−08 
                 E−08 
                   
               
               
                 A11 
                 −1.8396741 
                 2.6052287 
                 −7.3858674 
                 −4.6433025E−10 
               
               
                   
                 E−10 
                 E−09 
                 E−09 
                   
               
               
                 A12 
                 −2.3322022 
                 4.5039701 
                 −2.8754647 
                 −2.1130212E−10 
               
               
                   
                 E−10 
                 E−10 
                 E−10 
                   
               
               
                 A13 
                 5.3055800 
                 −1.2441622 
                 1.3371201 
                  1.4016372E−11 
               
               
                   
                 E−12 
                 E−10 
                 E−10 
                   
               
               
                 A14 
                 6.2855015 
                 −3.5736137 
                 −7.2125746 
                  2.1167422E−12 
               
               
                   
                 E−12 
                 E−12 
                 E−12 
                   
               
               
                 A15 
                 −2.0253567 
                 2.6773523 
                 −6.7596338 
                 −1.7252059E−13 
               
               
                   
                 E−13 
                 E−12 
                 E−13 
                   
               
               
                 A16 
                 −9.2258767 
                 −7.6802008 
                 8.9481906 
                 −1.1503559E−14 
               
               
                   
                 E−14 
                 E−14 
                 E−14 
                   
               
               
                 A17 
                 3.2688325 
                 −2.6082185 
                 −1.5829260 
                  1.0229135E−15 
               
               
                   
                 E−15 
                 E−14 
                 E−15 
                   
               
               
                 A18 
                 6.7081531 
                 1.4629201 
                 −2.4587246 
                  2.8365930E−17 
               
               
                   
                 E−16 
                 E−15 
                 E−16 
                   
               
               
                 A19 
                 −1.7801597 
                 1.0290669 
                 1.5880101 
                 −2.4016237E−18 
               
               
                   
                 E−17 
                 E−16 
                 E−17 
                   
               
               
                 A20 
                 −1.8802842 
                 −7.5818878 
                 −3.1409511 
                 −1.4533514E−20 
               
               
                   
                 E−18 
                 E−18 
                 E−19 
               
               
                   
               
            
           
         
       
     
     Example 9 
       FIG.  10    shows cross sections and schematic movement loci of a zoom lens according to Example 9. The zoom lens according to Example 9 consists of a first lens group G 1  having a negative refractive power, a second lens group G 2  having a positive refractive power, and a third lens group G 3  having a negative refractive power in order from the object side to the image side. During zooming from the wide-angle end to the telephoto end, the first lens group G 1  moves to the image side and the second lens group G 2  and the third lens group G 3  move to the object side. Thus, all the distances between the adjacent lens groups change. The first lens group G 1  consists of five lenses such as lenses L 11  to L 15  in order from the object side to the image side, the second lens group G 2  consists of an aperture stop St and ten lenses such as lenses L 21  to L 30  in order from the object side to the image side, and the third lens group G 3  consists of four lenses such as lenses L 31  and L 34  in order from the object side to the image side. The focusing lens group Gf is the entire third lens group G 3 . 
     Table 25 shows basic lens data of the zoom lens according to Example 9, Table 26 shows specifications and variable surface distances, Table 27 shows aspherical surface coefficients thereof, and  FIG.  21    shows aberration diagrams. 
     
       
         
           
               
             
               
                 TABLE 25 
               
             
            
               
                   
               
               
                 Example 9 
               
            
           
           
               
               
               
               
               
               
            
               
                 Sn 
                 R 
                 D 
                 Nd 
                 vd 
                 θgF 
               
               
                   
               
            
           
           
               
               
               
               
               
               
            
               
                  1 
                 37.99918 
                 2.050 
                 1.71897 
                 55.55 
                 0.54271 
               
               
                  2 
                 24.17952 
                 5.101 
                   
                   
                   
               
               
                 *3 
                 35.85033 
                 2.504 
                 2.00001 
                 23.18 
                 0.62355 
               
               
                 *4 
                 19.06832 
                 4.938 
                   
                   
                   
               
               
                 *5 
                 42.99544 
                 2.100 
                 1.85108 
                 40.12 
                 0.56852 
               
               
                 *6 
                 16.97544 
                 11.741 
                   
                   
                   
               
               
                  7 
                 −33.00862 
                 1.120 
                 1.43875 
                 94.66 
                 0.53402 
               
               
                  8 
                 30.18923 
                 4.645 
                 1.95375 
                 32.32 
                 0.59015 
               
               
                  9 
                 6769.26125 
                 DD[9] 
                   
                   
                   
               
               
                   10(St) 
                 ∞ 
                 1.300 
                   
                   
                   
               
               
                 *11  
                 30.66930 
                 6.569 
                 1.77632 
                 50.37 
                 0.54870 
               
               
                 *12  
                 −41.97745 
                 0.100 
                   
                   
                   
               
               
                 13 
                 −72.34341 
                 0.820 
                 1.74057 
                 49.63 
                 0.55390 
               
               
                 14 
                 24.55432 
                 2.480 
                 1.49700 
                 81.54 
                 0.53748 
               
               
                 15 
                 −340.45558 
                 0.919 
                   
                   
                   
               
               
                 16 
                 −492.43359 
                 0.790 
                 1.83328 
                 44.67 
                 0.55828 
               
               
                 17 
                 17.46525 
                 3.460 
                 1.67995 
                 31.43 
                 0.59475 
               
               
                 18 
                 −82.20649 
                 3.000 
                   
                   
                   
               
               
                 19 
                 −157.76127 
                 0.810 
                 1.84642 
                 43.36 
                 0.56090 
               
               
                 20 
                 20.32879 
                 4.384 
                 1.59522 
                 67.73 
                 0.54426 
               
               
                 21 
                 −34.31739 
                 1.499 
                   
                   
                   
               
               
                 22 
                 47.63975 
                 0.880 
                 1.85605 
                 42.39 
                 0.56292 
               
               
                 23 
                 18.05021 
                 4.994 
                 1.43875 
                 94.66 
                 0.53402 
               
               
                 24 
                 −45.78783 
                 0.398 
                   
                   
                   
               
               
                 25 
                 27.10191 
                 5.772 
                 1.43875 
                 94.66 
                 0.53402 
               
               
                 26 
                 −22.80653 
                 DD[26] 
                   
                   
                   
               
               
                 *27  
                 −53.93129 
                 2.150 
                 1.85135 
                 40.10 
                 0.56954 
               
               
                 *28  
                 −23.82934 
                 0.100 
                   
                   
                   
               
               
                 29 
                 278.71803 
                 0.890 
                 1.88300 
                 40.76 
                 0.56679 
               
               
                 30 
                 12.71252 
                 5.610 
                 1.49700 
                 81.54 
                 0.53748 
               
               
                 31 
                 84.11043 
                 0.850 
                 1.88300 
                 40.76 
                 0.56679 
               
               
                 32 
                 30.46524 
                 DD[32] 
                   
                   
                   
               
               
                 33 
                 ∞ 
                 2.850 
                 1.51680 
                 64.20 
                 0.53430 
               
               
                 34 
                 ∞ 
                 0.999 
               
               
                   
               
            
           
         
       
     
     
       
         
           
               
             
               
                 TABLE 26 
               
             
            
               
                   
               
               
                 Example 9 
               
            
           
           
               
               
               
               
               
               
            
               
                   
                   
                 W-Infinity 
                 T-Infinity 
                 W-500 mm 
                 T-500 mm 
               
               
                   
                   
               
            
           
           
               
               
               
               
               
               
            
               
                   
                 Zr 
                 1.000 
                 1.883 
                 — 
                 — 
               
               
                   
                 f 
                 9.267 
                 17.454 
                 9.200 
                 17.115 
               
               
                   
                 FNo. 
                 2.88 
                 3.05 
                 2.89 
                 3.05 
               
               
                   
                 2ω (°) 
                 121.0 
                 76.6 
                 121.2 
                 77.2 
               
               
                   
                 DD[9] 
                 30.189 
                 2.702 
                 30.189 
                 2.702 
               
               
                   
                 DD[26] 
                 2.004 
                 6.002 
                 2.147 
                 6.352 
               
               
                   
                 DD[32] 
                 14.911 
                 20.579 
                 14.768 
                 20.229 
               
               
                   
                   
               
            
           
         
       
     
     
       
         
           
               
             
               
                 TABLE 27 
               
               
                   
               
               
                 Example 9 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
               
               
               
            
               
                 Sn 
                 3 
                 4 
                 5 
                 6 
               
               
                   
               
               
                 KA 
                 1.0000000 
                 1.0000000 
                 1.0000000 
                  1.0000000E+00 
               
               
                   
                 E+00 
                 E+00 
                 E+00 
                   
               
               
                 A3 
                 0.0000000 
                 0.0000000 
                 0.0000000 
                  0.0000000E+00 
               
               
                   
                 E+00 
                 E+00 
                 E+00 
                   
               
               
                 A4 
                 4.3579078 
                 −3.7647125 
                 2.5118056 
                  2.4038898E−05 
               
               
                   
                 E−06 
                 E−05 
                 E−06 
                   
               
               
                 A5 
                 6.1108418 
                 3.2857428 
                 −1.4092283 
                  2.7797585E−06 
               
               
                   
                 E−07 
                 E−06 
                 E−06 
                   
               
               
                 A6 
                 1.1776328 
                 5.0274397 
                 1.4526221 
                  1.3007142E−06 
               
               
                   
                 E−07 
                 E−07 
                 E−06 
                   
               
               
                 A7 
                 1.0115853 
                 −6.6981646 
                 1.4139088 
                  1.8378201E−08 
               
               
                   
                 E−08 
                 E−08 
                 E−07 
                   
               
               
                 A8 
                 −2.4062256 
                 1.4858137 
                 −3.0260189 
                 −2.6143690E−08 
               
               
                   
                 E−09 
                 E−09 
                 E−08 
                   
               
               
                 A9 
                 −1.6471722 
                 7.8665955 
                 −2.1843838 
                 −4.0100028E−10 
               
               
                   
                 E−10 
                 E−10 
                 E−09 
                   
               
               
                 A10 
                 1.6766142 
                 −1.0104289 
                 3.0167062 
                  2.5400355E−10 
               
               
                   
                 E−11 
                 E−10 
                 E−10 
                   
               
               
                 A11 
                 1.0477521 
                 −5.6742015 
                 1.8895037 
                 −6.6204539E−12 
               
               
                   
                 E−12 
                 E−12 
                 E−11 
                   
               
               
                 A12 
                 −5.4951876 
                 9.8123825 
                 −1.9514802 
                 −1.7451201E−12 
               
               
                   
                 E−14 
                 E−13 
                 E−12 
                   
               
               
                 A13 
                 −3.5612552 
                 2.5892073 
                 −9.4488704 
                  1.9784564E−13 
               
               
                   
                 E−15 
                 E−14 
                 E−14 
                   
               
               
                 A14 
                 8.0877467 
                 −4.1347873 
                 8.4303048 
                  6.5258629E−15 
               
               
                   
                 E−17 
                 E−15 
                 E−15 
                   
               
               
                 A15 
                 6.7812206 
                 −7.2494749 
                 2.6281415 
                 −1.8124128E−15 
               
               
                   
                 E−18 
                 E−17 
                 E−16 
                   
               
               
                 A16 
                 −1.4094079 
                 7.4163194 
                 −2.2544121 
                  1.1663618E−17 
               
               
                   
                 E−20 
                 E−18 
                 E−17 
                   
               
               
                 A17 
                 −6.8304100 
                 1.1284937 
                 −3.7122465 
                  7.2364181E−18 
               
               
                   
                 E−21 
                 E−19 
                 E−19 
                   
               
               
                 A18 
                 −9.1130345 
                 −1.7775910 
                 3.2758004 
                 −1.7946465E−19 
               
               
                   
                 E−23 
                 E−21 
                 E−20 
                   
               
               
                 A19 
                 2.8371738 
                 −7.4427328 
                 2.0425494 
                 −1.0652633E−20 
               
               
                   
                 E−24 
                 E−23 
                 E−22 
                   
               
               
                 A20 
                 7.2328607 
                 −6.7144633 
                 −1.9438197 
                  3.8746057E−22 
               
               
                   
                 E−26 
                 E−24 
                 E−23 
               
               
                   
               
               
                 Sn 
                 11 
                 12 
                 27 
                 28 
               
               
                   
               
               
                 KA 
                 1.0000000 
                 1.0000000 
                 1.0000000 
                  1.0000000E+00 
               
               
                   
                 E+00 
                 E+00 
                 E+00 
                   
               
               
                 A3 
                 0.0000000 
                 0.0000000 
                 0.0000000 
                  0.0000000E+00 
               
               
                   
                 E+00 
                 E+00 
                 E+00 
                   
               
               
                 A4 
                 7.6946070 
                 −1.2927788 
                 −8.1522204 
                  2.2257820E−05 
               
               
                   
                 E−06 
                 E−06 
                 E−05 
                   
               
               
                 A5 
                 −9.0052179 
                 1.8404413 
                 4.4785414 
                 −2.0695347E−05 
               
               
                   
                 E−06 
                 E−05 
                 E−05 
                   
               
               
                 A6 
                 1.9598414 
                 −2.9902905 
                 −2.7303849 
                  6.3009873E−06 
               
               
                   
                 E−06 
                 E−06 
                 E−05 
                   
               
               
                 A7 
                 2.2991459 
                 −1.5386880 
                 1.0161013 
                  5.6988808E−07 
               
               
                   
                 E−07 
                 E−06 
                 E−05 
                   
               
               
                 A8 
                 −7.3086519 
                 6.1195410 
                 −1.8123594 
                 −4.5670856E−07 
               
               
                   
                 E−08 
                 E−07 
                 E−06 
                   
               
               
                 A9 
                 −2.6441714 
                 8.5266581 
                 −1.7874046 
                  1.2437554E−08 
               
               
                   
                 E−08 
                 E−09 
                 E−08 
                   
               
               
                 A10 
                 4.4460171 
                 −3.5989259 
                 6.1361268 
                  1.4661368E−08 
               
               
                   
                 E−09 
                 E−08 
                 E−08 
                   
               
               
                 A11 
                 1.6807750 
                 3.8337577 
                 −7.4833603 
                 −9.5145924E−10 
               
               
                   
                 E−09 
                 E−09 
                 E−09 
                   
               
               
                 A12 
                 −2.8826307 
                 8.8503967 
                 −3.5265530 
                 −2.6110524E−10 
               
               
                   
                 E−10 
                 E−10 
                 E−10 
                   
               
               
                 A13 
                 −4.4750000 
                 −1.7729499 
                 1.3425097 
                  2.1342391E−11 
               
               
                   
                 E−11 
                 E−10 
                 E−10 
                   
               
               
                 A14 
                 9.1887318 
                 −8.0299735 
                 −6.1448677 
                  2.7085617E−12 
               
               
                   
                 E−12 
                 E−12 
                 E−12 
                   
               
               
                 A15 
                 5.2209189 
                 3.6758768 
                 −6.7366121 
                 −2.3820354E−13 
               
               
                   
                 E−13 
                 E−12 
                 E−13 
                   
               
               
                 A16 
                 −1.4238812 
                 −7.7251489 
                 7.9031516 
                 −1.5904921E−14 
               
               
                   
                 E−13 
                 E−14 
                 E−14 
                   
               
               
                 A17 
                 −2.1183120 
                 −3.5360385 
                 −1.6260453 
                  1.3447522E−15 
               
               
                   
                 E−15 
                 E−14 
                 E−15 
                   
               
               
                 A18 
                 1.0437771 
                 1.8530613 
                 −1.9023049 
                  4.6900274E−17 
               
               
                   
                 E−15 
                 E−15 
                 E−16 
                   
               
               
                 A19 
                 −1.7320943 
                 1.3729732 
                 1.6031226 
                 −3.0643517E−18 
               
               
                   
                 E−18 
                 E−16 
                 E−17 
                   
               
               
                 A20 
                 −2.8234116 
                 −9.8547997 
                 −4.3787098 
                 −4.8156187E−20 
               
               
                   
                 E−18 
                 E−18 
                 E−19 
               
               
                   
               
            
           
         
       
     
     Example 10 
       FIG.  11    shows cross sections and schematic movement loci of a zoom lens according to Example 10. The zoom lens according to Example 10 has the same configuration as the outline of the zoom lens according to Example 1 except that a second lens group G 2  consists of an aperture stop St and three lenses such as lenses L 21  to L 23  in order from the object side to the image side. Table 28 shows basic lens data of the zoom lens according to Example 10, Table 29 shows specifications and variable surface distances, Table 30 shows aspherical surface coefficients thereof, and  FIG.  22    shows aberration diagrams. 
     
       
         
           
               
             
               
                 TABLE 28 
               
             
            
               
                   
               
               
                 Example 10 
               
            
           
           
               
               
               
               
               
               
            
               
                 Sn 
                 R 
                 D 
                 Nd 
                 vd 
                 θgF 
               
               
                   
               
            
           
           
               
               
               
               
               
               
            
               
                  1 
                 38.83843 
                 2.050 
                 2.00100 
                 29.13 
                 0.59952 
               
               
                  2 
                 24.81705 
                 5.377 
                   
                   
                   
               
               
                 *3 
                 178.21729 
                 2.504 
                 1.61881 
                 63.85 
                 0.54182 
               
               
                 *4 
                 20.19309 
                 5.936 
                   
                   
                   
               
               
                 *5 
                 27.60432 
                 2.100 
                 1.85135 
                 40.10 
                 0.56954 
               
               
                 *6 
                 17.98825 
                 9.721 
                   
                   
                   
               
               
                  7 
                 −37.48868 
                 1.155 
                 1.48749 
                 70.44 
                 0.53062 
               
               
                  8 
                 22.37597 
                 5.287 
                 1.98423 
                 28.81 
                 0.60204 
               
               
                  9 
                 85.39061 
                 DD[9] 
                   
                   
                   
               
               
                   10(St) 
                 ∞ 
                 1.300 
                   
                   
                   
               
               
                 *11  
                 31.29381 
                 5.414 
                 1.49710 
                 81.56 
                 0.53848 
               
               
                 *12  
                 −32.44803 
                 0.700 
                   
                   
                   
               
               
                 13 
                 −478.66283 
                 0.710 
                 1.82761 
                 45.24 
                 0.55720 
               
               
                 14 
                 22.66145 
                 2.928 
                 1.72717 
                 28.77 
                 0.60157 
               
               
                 15 
                 291.93512 
                 DD[15] 
                   
                   
                   
               
               
                 16 
                 −176.40583 
                 0.810 
                 1.84317 
                 43.68 
                 0.56023 
               
               
                 17 
                 21.84639 
                 4.444 
                 1.59522 
                 67.73 
                 0.54426 
               
               
                 18 
                 −31.58888 
                 2.000 
                   
                   
                   
               
               
                 19 
                 33.09781 
                 0.710 
                 1.87525 
                 40.48 
                 0.56722 
               
               
                 20 
                 16.90117 
                 6.030 
                 1.43875 
                 94.66 
                 0.53402 
               
               
                 21 
                 −90.33111 
                 0.672 
                   
                   
                   
               
               
                 22 
                 26.61789 
                 5.480 
                 1.49710 
                 81.56 
                 0.53848 
               
               
                 23 
                 −28.19034 
                 DD[23] 
                   
                   
                   
               
               
                 *24  
                 −65.30460 
                 2.254 
                 1.80139 
                 45.45 
                 0.55814 
               
               
                 *25  
                 −20.94046 
                 0.100 
                   
                   
                   
               
               
                 26 
                 −116.23532 
                 0.915 
                 1.88300 
                 40.76 
                 0.56679 
               
               
                 27 
                 12.01637 
                 4.943 
                 1.48749 
                 70.44 
                 0.53062 
               
               
                 28 
                 42.59105 
                 0.890 
                 2.00100 
                 29.13 
                 0.59952 
               
               
                 29 
                 25.03413 
                 DD[29] 
                   
                   
                   
               
               
                 30 
                 266.58306 
                 2.476 
                 2.00272 
                 19.32 
                 0.64514 
               
               
                 31 
                 −79.08354 
                 8.637 
                   
                   
                   
               
               
                 32 
                 ∞ 
                 2.850 
                 1.51680 
                 64.20 
                 0.53430 
               
               
                 33 
                 ∞ 
                 0.999 
               
               
                   
               
            
           
         
       
     
     
       
         
           
               
             
               
                 TABLE 29 
               
             
            
               
                   
               
               
                 Example 10 
               
            
           
           
               
               
               
               
               
               
            
               
                   
                   
                 W-Infinity 
                 T-Infinity 
                 W-500 mm 
                 T-500 mm 
               
               
                   
                   
               
            
           
           
               
               
               
               
               
               
            
               
                   
                 Zr 
                 1.000 
                 1.885 
                 — 
                 — 
               
               
                   
                 f 
                 8.240 
                 15.533 
                 8.197 
                 15.348 
               
               
                   
                 FNo. 
                 4.12 
                 4.12 
                 4.12 
                 4.09 
               
               
                   
                 2ω (°) 
                 126.6 
                 81.4 
                 126.8 
                 82.0 
               
               
                   
                 DD[9] 
                 28.420 
                 3.583 
                 28.420 
                 3.583 
               
               
                   
                 DD[15] 
                 7.280 
                 5.934 
                 7.280 
                 5.934 
               
               
                   
                 DD[23] 
                 2.267 
                 6.676 
                 2.373 
                 6.937 
               
               
                   
                 DD[29] 
                 3.387 
                 9.151 
                 3.281 
                 8.890 
               
               
                   
                   
               
            
           
         
       
     
     
       
         
           
               
             
               
                 TABLE 30 
               
               
                   
               
               
                 Example 10 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
               
               
               
            
               
                 Sn 
                 3 
                 4 
                 5 
                 6 
               
               
                   
               
               
                 KA 
                 1.0000000 
                 1.0000000 
                 1.0000000 
                  1.0000000E+00 
               
               
                   
                 E+00 
                 E+00 
                 E+00 
                   
               
               
                 A3 
                 0.0000000 
                 0.0000000 
                 0.0000000 
                  0.0000000E+00 
               
               
                   
                 E+00 
                 E+00 
                 E+00 
                   
               
               
                 A4 
                 1.9988206 
                 2.2009889 
                 −2.6325038 
                 −2.5890038E−05 
               
               
                   
                 E−04 
                 E−04 
                 E−05 
                   
               
               
                 A5 
                 −4.7884304 
                 −1.0663953 
                 −5.7523622 
                  1.9710509E−06 
               
               
                   
                 E−06 
                 E−05 
                 E−06 
                   
               
               
                 A6 
                 −1.8522010 
                 −1.7633881 
                 1.5282618 
                  3.4973820E−07 
               
               
                   
                 E−06 
                 E−06 
                 E−06 
                   
               
               
                 A7 
                 9.6926862 
                 2.3494988 
                 8.3207313 
                 −3.5512780E−08 
               
               
                   
                 E−08 
                 E−07 
                 E−08 
                   
               
               
                 A8 
                 7.0116788 
                 −3.4605810 
                 −3.1985403 
                  8.4350774E−09 
               
               
                   
                 E−09 
                 E−09 
                 E−08 
                   
               
               
                 A9 
                 −8.1338669 
                 −3.0732589 
                 −7.4922729 
                 −1.4286840E−10 
               
               
                   
                 E−10 
                 E−09 
                 E−10 
                   
               
               
                 A10 
                 6.2196004 
                 1.5039080 
                 3.6791953 
                 −2.5462979E−10 
               
               
                   
                 E−12 
                 E−10 
                 E−10 
                   
               
               
                 A11 
                 3.8306313 
                 2.4944170 
                 4.2829353 
                  9.7842492E−12 
               
               
                   
                 E−12 
                 E−11 
                 E−12 
                   
               
               
                 A12 
                 −1.5985066 
                 −1.1592000 
                 −2.4659380 
                  3.2348980E−12 
               
               
                   
                 E−13 
                 E−12 
                 E−12 
                   
               
               
                 A13 
                 −1.0751405 
                 −1.2363197 
                 −1.5690233 
                 −1.1585534E−13 
               
               
                   
                 E−14 
                 E−13 
                 E−14 
                   
               
               
                 A14 
                 6.4095225 
                 5.1641000 
                 9.9352692 
                 −2.3229015E−14 
               
               
                   
                 E−16 
                 E−15 
                 E−15 
                   
               
               
                 A15 
                 1.7820004 
                 3.6213610 
                 3.5325188 
                  6.5232270E−16 
               
               
                   
                 E−17 
                 E−16 
                 E−17 
                   
               
               
                 A16 
                 −1.2614112 
                 −1.5549728 
                 −2.3984950 
                  9.7319306E−17 
               
               
                   
                 E−18 
                 E−17 
                 E−17 
                   
               
               
                 A17 
                 −1.6088054 
                 −5.7615451 
                 −4.3808930 
                 −1.8232077E−18 
               
               
                   
                 E−20 
                 E−19 
                 E−20 
                   
               
               
                 A18 
                 1.2725085 
                 2.8974518 
                 3.2320249 
                 −2.2629889E−19 
               
               
                   
                 E−21 
                 E−20 
                 E−20 
                   
               
               
                 A19 
                 6.0996528 
                 3.8383269 
                 2.2332247 
                  2.0560322E−21 
               
               
                   
                 E−24 
                 E−22 
                 E−23 
                   
               
               
                 A20 
                 −5.2582305 
                 −2.4030749 
                 −1.8866554 
                  2.3213927E−22 
               
               
                   
                 E−25 
                 E−23 
                 E−23 
               
               
                   
               
               
                 Sn 
                 11 
                 12 
                 24 
                 25 
               
               
                   
               
               
                 KA 
                 1.0000000 
                 1.0000000 
                 1.0000000 
                  1.0000000E+00 
               
               
                   
                 E+00 
                 E+00 
                 E+00 
                   
               
               
                 A3 
                 0.0000000 
                 0.0000000 
                 0.0000000 
                  0.0000000E+00 
               
               
                   
                 E+00 
                 E+00 
                 E+00 
                   
               
               
                 A4 
                 1.8131929 
                 2.9461519 
                 9.7916315 
                  1.2671312E−04 
               
               
                   
                 E−05 
                 E−05 
                 E−06 
                   
               
               
                 A5 
                 −1.1623542 
                 −1.2037429 
                 1.2360732 
                 −2.6567039E−05 
               
               
                   
                 E−05 
                 E−06 
                 E−06 
                   
               
               
                 A6 
                 1.1508714 
                 3.0985175 
                 −5.5252711 
                 −4.8731882E−07 
               
               
                   
                 E−06 
                 E−06 
                 E−06 
                   
               
               
                 A7 
                 9.7231567 
                 −4.6213219 
                 1.1267236 
                  1.8568389E−06 
               
               
                   
                 E−07 
                 E−07 
                 E−06 
                   
               
               
                 A8 
                 −1.8473299 
                 −2.5190760 
                 2.0764734 
                 −2.0238319E−07 
               
               
                   
                 E−07 
                 E−07 
                 E−07 
                   
               
               
                 A9 
                 −4.5550852 
                 7.1919616 
                 −7.7624633 
                 −5.4245866E−08 
               
               
                   
                 E−08 
                 E−08 
                 E−08 
                   
               
               
                 A10 
                 1.1178587 
                 6.6202336 
                 −1.6843708 
                  9.5285746E−09 
               
               
                   
                 E−08 
                 E−09 
                 E−09 
                   
               
               
                 A11 
                 1.4330916 
                 −3.9519480 
                 2.3591950 
                  8.3542650E−10 
               
               
                   
                 E−09 
                 E−09 
                 E−09 
                   
               
               
                 A12 
                 −3.9796202 
                 7.8278058 
                 −7.5970152 
                 −2.1185700E−10 
               
               
                   
                 E−10 
                 E−11 
                 E−11 
                   
               
               
                 A13 
                 −2.8191691 
                 1.1365987 
                 −3.9277257 
                 −6.4079304E−12 
               
               
                   
                 E−11 
                 E−10 
                 E−11 
                   
               
               
                 A14 
                 8.6365562 
                 −8.6181468 
                 2.3487847 
                  2.6838311E−12 
               
               
                   
                 E−12 
                 E−12 
                 E−12 
                   
               
               
                 A15 
                 3.2889333 
                 −1.8044608 
                 3.7105894 
                  1.3189721E−14 
               
               
                   
                 E−13 
                 E−12 
                 E−13 
                   
               
               
                 A16 
                 −1.1093195 
                 2.0416055 
                 −2.8582230 
                 −1.9789987E−14 
               
               
                   
                 E−13 
                 E−13 
                 E−14 
                   
               
               
                 A17 
                 −2.0838167 
                 1.4964872 
                 −1.8684311 
                  1.1141902E−16 
               
               
                   
                 E−15 
                 E−14 
                 E−15 
                   
               
               
                 A18 
                 7.7164688 
                 −2.1487185 
                 1.6679874 
                  7.9323252E−17 
               
               
                   
                 E−16 
                 E−15 
                 E−16 
                   
               
               
                 A19 
                 5.5291926 
                 −5.0592800 
                 3.8989609 
                 −5.3075735E−19 
               
               
                   
                 E−18 
                 E−17 
                 E−18 
                   
               
               
                 A20 
                 −2.2362317 
                 8.7275034 
                 −3.8550221 
                 −1.3413935E−19 
               
               
                   
                 E−18 
                 E−18 
                 E−19 
               
               
                   
               
            
           
         
       
     
     Example 11 
       FIG.  12    shows cross sections and schematic movement loci of a zoom lens according to Example 11. The zoom lens according to Example 11 has the same configuration as the outline of the zoom lens according to Example 1 except that a second lens group G 2  consists of an aperture stop St and three lenses such as lenses L 21  to L 23  in order from the object side to the image side, a third lens group G 3  consists of four lenses such as lenses L 31  to L 34  in order from the object side to the image side, and the fourth lens group G 4  consists of three lenses such as lenses L 41  to L 43  in order from the object side to the image side. Table 31 shows basic lens data of the zoom lens according to Example 11, Table 32 shows specifications and variable surface distances, Tables 33 and 34 show aspherical surface coefficients thereof, and  FIG.  23    shows aberration diagrams. 
     
       
         
           
               
             
               
                 TABLE 31 
               
             
            
               
                   
               
               
                 Example 11 
               
            
           
           
               
               
               
               
               
               
            
               
                 Sn 
                 R 
                 D 
                 Nd 
                 vd 
                 θgF 
               
               
                   
               
            
           
           
               
               
               
               
               
               
            
               
                 *1 
                 38.01958 
                 2.100 
                 1.85344 
                 33.58 
                 0.58902 
               
               
                 *2 
                 21.67083 
                 6.500 
                   
                   
                   
               
               
                 *3 
                 49.75342 
                 2.262 
                 1.78355 
                 49.64 
                 0.54977 
               
               
                 *4 
                 18.81885 
                 7.613 
                   
                   
                   
               
               
                  5 
                 42.22009 
                 1.800 
                 1.68191 
                 57.40 
                 0.54263 
               
               
                  6 
                 18.94412 
                 11.882 
                   
                   
                   
               
               
                  7 
                 −29.44155 
                 1.300 
                 1.49700 
                 81.54 
                 0.53748 
               
               
                  8 
                 63.89485 
                 0.300 
                   
                   
                   
               
               
                  9 
                 50.54214 
                 4.750 
                 1.91082 
                 35.25 
                 0.58224 
               
               
                 10 
                 −70.20454 
                 DD[10] 
                   
                   
                   
               
               
                   11(St) 
                 ∞ 
                 1.300 
                   
                   
                   
               
               
                 *12  
                 20.93165 
                 3.000 
                 1.49710 
                 81.56 
                 0.53848 
               
               
                 *13  
                 58.85146 
                 3.296 
                   
                   
                   
               
               
                 14 
                 174.57085 
                 0.710 
                 1.81330 
                 24.43 
                 0.61471 
               
               
                 15 
                 14.32932 
                 6.000 
                 1.73658 
                 28.17 
                 0.60317 
               
               
                 16 
                 −32.59552 
                 DD[16] 
                   
                   
                   
               
               
                 17 
                 96.80123 
                 2.010 
                 1.58335 
                 39.66 
                 0.57725 
               
               
                 18 
                 −143.06846 
                 0.710 
                 1.77264 
                 49.26 
                 0.55182 
               
               
                 19 
                 12.42943 
                 4.000 
                 1.49700 
                 81.54 
                 0.53748 
               
               
                 20 
                 57.90386 
                 1.628 
                   
                   
                   
               
               
                 *21  
                 27.68454 
                 6.068 
                 1.49710 
                 81.56 
                 0.53848 
               
               
                 *22  
                 −22.01245 
                 DD[22] 
                   
                   
                   
               
               
                 *23  
                 85.62851 
                 3.008 
                 1.68948 
                 31.02 
                 0.59874 
               
               
                 *24  
                 −41.08714 
                 0.100 
                   
                   
                   
               
               
                 25 
                 500.70959 
                 1.010 
                 2.00069 
                 25.46 
                 0.61364 
               
               
                 26 
                 14.88552 
                 4.500 
                 1.49700 
                 81.54 
                 0.53748 
               
               
                 27 
                 40.04588 
                 DD[27] 
                   
                   
                   
               
               
                 28 
                 616.37490 
                 2.255 
                 1.81797 
                 32.50 
                 0.59283 
               
               
                 29 
                 −114.53368 
                 10.393 
                   
                   
                   
               
               
                 30 
                 ∞ 
                 2.850 
                 1.51680 
                 64.20 
                 0.53430 
               
               
                 31 
                 ∞ 
                 1.000 
               
               
                   
               
            
           
         
       
     
     
       
         
           
               
             
               
                 TABLE 32 
               
             
            
               
                   
               
               
                 Example 11 
               
            
           
           
               
               
               
               
               
               
            
               
                   
                   
                 W-Infinity 
                 T-Infinity 
                 W-500 mm 
                 T-500 mm 
               
               
                   
                   
               
            
           
           
               
               
               
               
               
               
            
               
                   
                 Zr 
                 1.000 
                 1.885 
                 — 
                 — 
               
               
                   
                 f 
                 8.242 
                 15.537 
                 8.199 
                 15.391 
               
               
                   
                 FNo. 
                 2.88 
                 2.88 
                 2.88 
                 2.87 
               
               
                   
                 2ω (°) 
                 127.4 
                 85.8 
                 127.6 
                 85.8 
               
               
                   
                 DD[10] 
                 29.049 
                 1.905 
                 29.049 
                 1.905 
               
               
                   
                 DD[16] 
                 2.000 
                 1.977 
                 2.000 
                 1.977 
               
               
                   
                 DD[22] 
                 2.090 
                 1.999 
                 2.364 
                 2.521 
               
               
                   
                 DD[27] 
                 3.000 
                 15.096 
                 2.726 
                 14.574 
               
               
                   
                   
               
            
           
         
       
     
     
       
         
           
               
             
               
                 TABLE 33 
               
               
                   
               
               
                 Example 11 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
               
               
               
            
               
                 Sn 
                 1 
                 2 
                 3 
                 4 
               
               
                   
               
               
                 KA 
                 1.0000000 
                 1.0000000 
                 1.0000000 
                  1.0000000E+00 
               
               
                   
                 E+00 
                 E+00 
                 E+00 
                   
               
               
                 A3 
                 0.0000000 
                 0.0000000 
                 0.0000000 
                  0.0000000E+00 
               
               
                   
                 E+00 
                 E+00 
                 E+00 
                   
               
               
                 A4 
                 2.3538914 
                 −6.1204523 
                 1.2112840 
                  1.3975901E−05 
               
               
                   
                 E−06 
                 E−06 
                 E−05 
                   
               
               
                 A5 
                 −3.4907564 
                 −5.3472016 
                 −7.4620073 
                 −1.5061890E−07 
               
               
                   
                 E−08 
                 E−08 
                 E−09 
                   
               
               
                 A6 
                 −4.4722488 
                 −4.3584587 
                 6.6324806 
                 −5.1554822E−09 
               
               
                   
                 E−09 
                 E−09 
                 E−09 
                   
               
               
                 A7 
                 4.3913012 
                 −9.2519054 
                 −1.5157417 
                  4.2577001E−10 
               
               
                   
                 E−11 
                 E−11 
                 E−10 
                   
               
               
                 A8 
                 −2.7550962 
                 2.7468421 
                 1.0339000 
                  2.8085677E−11 
               
               
                   
                 E−13 
                 E−12 
                 E−11 
                   
               
               
                 A9 
                 1.1425808 
                 −9.1925037 
                 1.9791555 
                 −4.8544102E−13 
               
               
                   
                 E−15 
                 E−14 
                 E−13 
                   
               
               
                 A10 
                 −7.8590812 
                 −1.5338856 
                 1.1545987 
                 −3.1533737E−14 
               
               
                   
                 E−16 
                 E−14 
                 E−14 
                   
               
               
                 A11 
                 −4.1648225 
                 8.2566210 
                 2.9601859 
                 −2.6247435E−16 
               
               
                   
                 E−18 
                 E−18 
                 E−16 
                   
               
               
                 A12 
                 1.0747580 
                 −2.3837349 
                 5.2816041 
                 −8.9734797E−16 
               
               
                   
                 E−18 
                 E−17 
                 E−17 
                   
               
               
                 A13 
                 −5.0833046 
                 1.6661231 
                 −5.8674993 
                 −1.1351214E−17 
               
               
                   
                 E−22 
                 E−19 
                 E−19 
                   
               
               
                 A14 
                 1.4697881 
                 4.8059808 
                 1.5290329 
                  6.0284294E−19 
               
               
                   
                 E−21 
                 E−20 
                 E−20 
                   
               
               
                 A15 
                 1.2803528 
                 5.8639768 
                 −5.9878088 
                  2.8994109E−21 
               
               
                   
                 E−24 
                 E−22 
                 E−22 
                   
               
               
                 A16 
                 1.3808693 
                 2.3949824 
                 −3.5280410 
                 −3.8481462E−21 
               
               
                   
                 E−24 
                 E−22 
                 E−23 
                   
               
               
                 A17 
                 −2.5706403 
                 4.6754151 
                 −6.8874513 
                 −1.7011615E−23 
               
               
                   
                 E−27 
                 E−25 
                 E−25 
                   
               
               
                 A18 
                 −1.6908626 
                 3.0085461 
                 −8.8996738 
                 −1.6401607E−23 
               
               
                   
                 E−28 
                 E−25 
                 E−27 
                   
               
               
                 A19 
                 −5.7251870 
                 1.2814567 
                 3.2557651 
                 −3.1846491E−27 
               
               
                   
                 E−30 
                 E−27 
                 E−27 
                   
               
               
                 A20 
                 −1.8105323 
                 −1.9856837 
                 −3.2952552 
                 −3.3725389E−26 
               
               
                   
                 E−30 
                 E−27 
                 E−28 
               
               
                   
               
               
                 Sn 
                 12 
                 13 
                 21 
                 22 
               
               
                   
               
               
                 KA 
                 1.0000000 
                 1.0000000 
                 1.0000000 
                  1.0000000E+00 
               
               
                   
                 E+00 
                 E+00 
                 E+00 
                   
               
               
                 A3 
                 0.0000000 
                 0.0000000 
                 0.0000000 
                  0.0000000E+00 
               
               
                   
                 E+00 
                 E+00 
                 E+00 
                   
               
               
                 A4 
                 1.2438273 
                 5.7094962 
                 −3.3920976 
                 −2.7234264E−05 
               
               
                   
                 E−05 
                 E−05 
                 E−05 
                   
               
               
                 A5 
                 3.2438500 
                 3.6641458 
                 9.1209364 
                 −4.7392270E−08 
               
               
                   
                 E−07 
                 E−07 
                 E−08 
                   
               
               
                 A6 
                 6.7064519 
                 1.3547340 
                 −9.1075703 
                 −1.0451403E−07 
               
               
                   
                 E−08 
                 E−07 
                 E−08 
                   
               
               
                 A7 
                 9.0662184 
                 −2.0551815 
                 6.6879648 
                  3.1133983E−10 
               
               
                   
                 E−09 
                 E−08 
                 E−10 
                   
               
               
                 A8 
                 1.8201054 
                 9.1324518 
                 4.7101690 
                 −3.3831822E−10 
               
               
                   
                 E−09 
                 E−09 
                 E−10 
                   
               
               
                 A9 
                 −1.1401647 
                 −5.6857535 
                 7.4650881 
                 −2.9938769E−12 
               
               
                   
                 E−10 
                 E−10 
                 E−12 
                   
               
               
                 A10 
                 −5.2325496 
                 −4.6323958 
                 9.3430648 
                  4.7431754E−12 
               
               
                   
                 E−11 
                 E−11 
                 E−13 
                   
               
               
                 A11 
                 −3.1240698 
                 2.7073350 
                 −1.2993896 
                 −1.3962563E−13 
               
               
                   
                 E−12 
                 E−12 
                 E−13 
                   
               
               
                 A12 
                 1.3366222 
                 −6.2383808 
                 −8.7353465 
                 −8.3874335E−14 
               
               
                   
                 E−12 
                 E−13 
                 E−15 
                   
               
               
                 A13 
                 1.9997329 
                 5.8218492 
                 1.7710798 
                  2.8923215E−15 
               
               
                   
                 E−15 
                 E−15 
                 E−15 
                   
               
               
                 A14 
                 −4.1895357 
                 1.6006435 
                 −9.9429173 
                 −1.0284337E−16 
               
               
                   
                 E−15 
                 E−14 
                 E−16 
                   
               
               
                 A15 
                 3.5085904 
                 1.5149915 
                 4.2495272 
                  8.8453051E−18 
               
               
                   
                 E−16 
                 E−15 
                 E−17 
                   
               
               
                 A16 
                 −8.3138080 
                 −2.4668233 
                 1.3131198 
                  1.3296931E−18 
               
               
                   
                 E−17 
                 E−16 
                 E−18 
                   
               
               
                 A17 
                 −3.8192093 
                 1.4115625 
                 4.2892092 
                 −1.7747536E−19 
               
               
                   
                 E−18 
                 E−17 
                 E−20 
                   
               
               
                 A18 
                 1.4963264 
                 −2.6533787 
                 1.3021721 
                  3.5448239E−21 
               
               
                   
                 E−18 
                 E−18 
                 E−20 
                   
               
               
                 A19 
                 −2.1099707 
                 −1.6589720 
                 2.4739017 
                 −2.7073562E−21 
               
               
                   
                 E−19 
                 E−19 
                 E−21 
                   
               
               
                 A20 
                 1.4025700 
                 3.1529794 
                 −2.6700698 
                  2.5008909E−22 
               
               
                   
                 E−20 
                 E−20 
                 E−22 
               
               
                   
               
            
           
         
       
     
     
       
         
           
               
             
               
                 TABLE 34 
               
             
            
               
                   
               
               
                 Example 11 
               
            
           
           
               
               
               
               
            
               
                   
                 Sn 
                 23 
                 24 
               
               
                   
                   
               
               
                   
                 KA 
                 1.0000000E+00 
                 1.0000000E+00 
               
               
                   
                 A3 
                 0.0000000E+00 
                 0.0000000E+00 
               
               
                   
                 A4 
                 2.4655987E−05 
                 5.9031115E−05 
               
               
                   
                 A5 
                 1.0515050E−07 
                 1.8664432E−07 
               
               
                   
                 A6 
                 1.0268190E−07 
                 1.7747794E−08 
               
               
                   
                 A7 
                 7.1369499E−11 
                 2.7928601E−10 
               
               
                   
                 A8 
                 4.3488916E−13 
                 −4.1694372E−10  
               
               
                   
                 A9 
                 2.7915694E−11 
                 4.9870126E−13 
               
               
                   
                 A10 
                 −1.0914253E−12  
                 1.1023631E−12 
               
               
                   
                 A11 
                 −3.4033712E−14  
                 4.1779752E−14 
               
               
                   
                 A12 
                 −4.8664457E−14  
                 3.1863440E−15 
               
               
                   
                 A13 
                 1.7202965E−15 
                 2.9318215E−15 
               
               
                   
                 A14 
                 9.6695648E−17 
                 −3.0190039E−16  
               
               
                   
                 A15 
                 −2.4331206E−19  
                 1.3471653E−17 
               
               
                   
                 A16 
                 5.0914166E−18 
                 −4.7314493E−18  
               
               
                   
                 A17 
                 2.6786239E−20 
                 3.4994751E−19 
               
               
                   
                 A18 
                 −1.7253807E−19  
                 −1.4489281E−19  
               
               
                   
                 A19 
                 3.8700030E−21 
                 4.4688877E−21 
               
               
                   
                 A20 
                 7.9498617E−22 
                 8.4953025E−22 
               
               
                   
                   
               
            
           
         
       
     
     Table 35 shows values corresponding to Conditional Expressions (1) to (12) of the zoom lenses according to Examples 1 to 11. In Examples 1 to 11, the d line is set as the reference wavelength. Table 35 shows the values with the d line as the reference. 
     
       
         
           
               
               
               
               
               
               
               
               
             
               
                 TABLE 35 
               
               
                   
               
             
            
               
                 Expression 
                   
                   
                   
                   
                   
                   
                   
               
               
                 number 
                   
                 Example 1 
                 Example 2 
                 Example 3 
                 Example 4 
                 Example 5 
                 Example 6 
               
               
                   
               
               
                  (1) 
                 Nd1ave 
                 1.798 
                 1.798 
                 1.886 
                 1.799 
                 1.803 
                 1.799 
               
               
                  (2) 
                 |ff/f1| 
                 1.660 
                 1.610 
                 1.881 
                 1.713 
                 1.330 
                 1.685 
               
               
                  (3) 
                 |(1 − βfw 2 ) × βrw 2 | 
                 1.441 
                 1.496 
                 1.584 
                 1.438 
                 1.725 
                 1.390 
               
               
                  (4) 
                 Nd1amin 
                 1.693 
                 1.693 
                 1.814 
                 1.694 
                 1.600 
                 1.694 
               
               
                  (5) 
                 vdf 
                 81.54 
                 81.54 
                 81.54 
                 81.54 
                 81.54 
                 81.54 
               
               
                  (6) 
                 vd1bn 
                 94.66 
                 94.66 
                 94.66 
                 94.66 
                 94.66 
                 94.66 
               
               
                  (7) 
                 Nd1 
                 1.852 
                 1.852 
                 1.814 
                 1.852 
                 1.600 
                 1.852 
               
               
                  (8) 
                 BFw/(fw × tanωw) 
                 0.736 
                 0.735 
                 1.089 
                 0.735 
                 0.714 
                 0.729 
               
               
                  (9) 
                 tanωw/FNow 
                 0.676 
                 0.677 
                 0.613 
                 0.677 
                 0.613 
                 0.695 
               
               
                 (10) 
                 (R1 + R2)/(R1 − R2) 
                 3.750 
                 3.800 
                 4.484 
                 3.613 
                 4.315 
                 3.450 
               
               
                 (11) 
                 |f1/f2| 
                 0.338 
                 0.610 
                 0.368 
                 0.328 
                 0.394 
                 0.344 
               
               
                 (12) 
                 |f1a/f1b| 
                 0.094 
                 0.082 
                 0.065 
                 0.057 
                 0.084 
                 0.059 
               
               
                   
               
            
           
           
               
               
               
               
               
               
               
            
               
                 Expression 
                   
                   
                   
                   
                   
                   
               
               
                 number 
                   
                 Example 7 
                 Example 8 
                 Example 9 
                 Example 10 
                 Example 11 
               
               
                   
               
               
                  (1) 
                 Nd1ave 
                 1.799 
                 1.799 
                 1.857 
                 1.847 
                 1.773 
               
               
                  (2) 
                 |ff/f1| 
                 1.738 
                 1.746 
                 1.943 
                 1.593 
                 2.795 
               
               
                  (3) 
                 |(1 − βfw 2 ) × βrw 2 | 
                 1.364 
                 1.354 
                 1.554 
                 1.641 
                 0.636 
               
               
                  (4) 
                 Nd1amin 
                 1.694 
                 1.694 
                 1.719 
                 1.619 
                 1.682 
               
               
                  (5) 
                 vdf 
                 81.54 
                 81.54 
                 81.54 
                 70.44 
                 81.54 
               
               
                  (6) 
                 vd1bn 
                 94.66 
                 94.66 
                 94.66 
                 70.44 
                 81.54 
               
               
                  (7) 
                 Nd1 
                 1.852 
                 1.852 
                 1.719 
                 2.001 
                 1.835 
               
               
                  (8) 
                 BFw/(fw × tanωw) 
                 0.735 
                 0.735 
                 1.087 
                 0.703 
                 0.795 
               
               
                  (9) 
                 tanωw/FNow 
                 0.677 
                 0.677 
                 0.613 
                 0.483 
                 0.702 
               
               
                 (10) 
                 (R1 + R2)/(R1 − R2) 
                 3.673 
                 3.722 
                 4.499 
                 4.540 
                 3.651 
               
               
                 (11) 
                 |f1/f2| 
                 0.310 
                 0.342 
                 0.670 
                 0.325 
                 0.658 
               
               
                 (12) 
                 |f1a/f1b| 
                 0.085 
                 0.074 
                 0.054 
                 0.030 
                 0.098 
               
               
                   
               
            
           
         
       
     
     As can be seen from the above data, in the zoom lenses according to Examples 1 to 11, the maximum full-angle of view in a state in which the object at infinity at the wide-angle end is in focus is equal to or greater than 120 degrees, the wide angle of view is secured, reduction in size is achieved, and various aberrations are satisfactorily corrected. Accordingly, high optical performance is achieved. 
     Next, an imaging apparatus according to an embodiment of the present invention will be described.  FIGS.  24  and  25    are external views of a camera  30  which is the imaging apparatus according to the embodiment of the present invention.  FIG.  24    is a perspective view in a case where the camera  30  is viewed from the front side, and  FIG.  25    is a perspective view in a case where the camera  30  is viewed from the rear side. The camera  30  is a mirrorless digital camera to which an interchangeable lens  20  is detachably attached. The interchangeable lens  20  includes the zoom lens  1  according to the embodiment of the present invention which is accommodated in a lens barrel. 
     The camera  30  comprises a camera body  31 , and a shutter button  32  and a power button  33  are provided on the upper surface of the camera body  31 . A manipulation unit  34 , a manipulation unit  35 , and a display unit  36  are provided on the rear surface of the camera body  31 . The display unit  36  displays a captured image and an image within an angle of view before the image is captured. 
     An imaging opening on which rays from an imaging target are incident is formed in the central portion of the front surface of the camera body  31 , a mount  37  is provided in a position corresponding to the imaging opening, and the interchangeable lens  20  is attached to the camera body  31  through the mount  37 . 
     An imaging element such as a charge coupled device (CCD) or a complementary metal oxide semiconductor (CMOS) that outputs imaging signals corresponding to a subject image formed by the interchangeable lens  20 , a signal processing circuit that generates an image by processing the imaging signals output from the imaging element, and a recording medium for recording the generated image are provided within the camera body  31 . In the camera  30 , it is possible to image a still image or a motion picture by pressing the shutter button  32 , and image data obtained through the imaging is recorded in the recording medium. 
     The present invention has been hitherto described through embodiments and examples, but the present invention is not limited to the above-mentioned embodiments and examples, and may be modified into various forms. For example, values such as the radius of curvature, the surface distance, the refractive index, the Abbe number, and the aspherical surface coefficient of each lens are not limited to the values shown in the numerical examples, and different values may be used therefor. 
     The imaging apparatus according to the embodiment of the present invention is not limited to the examples. For example, various aspects such as cameras other than non-reflex cameras, film cameras, video cameras, movie shooting cameras, and broadcasting cameras may be used.