Abstract:
Disclosed is a projection lens system for use in an optical system for magnifying and projecting original images displayed on plural image display devices onto a screen through projection lenses provided in corresponding relation to the image display devices, which projection lens system comprises plural lens elements and in which according to colors or degrees of fineness of original images, the number of constituent lenses, or the shape of lens surface, or an effective aperture of at least one constituent lens element surface, or the number of constituent lenses and the shape of lens surface, or the number of constituent lenses and an effective aperture of at least one constituent lens element surface, or the shape of lens surface and an effective aperture of at least one constituent lens element surface, or the number of constituent lenses, the shape of lens surface and an effective aperture of at least one constituent lens element surface, are changed at a time.

Description:
BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The present invention relates to a color display device using projection lenses such as a projection television device. 
     2. Prior Art 
     In a so-called projection television device wherein images on the fluorescent faces of cathode-ray tubes of blue, red and green are projected onto a screen through projection lenses, its focusing performance has recently made a remarkable advancement, and the requirements for the performance of projection lenses which are key devices are becoming more and more strict every year. Under the circumstances, various lenses have been made public according to the fineness of image. Even under the same design idea, various lenses of different numbers of constituent lenses and different shapes of lens faces have been designed. For example, projection lenses of this type are disclosed in Japanese Patent Laid-Open No. 10642787. In the conventional projection lenses referred to above, there has been attained a high focusing performance after appropriate aberration correction for light of designed wavelength. In many cases, e ray (546.7 nm) of a wavelength close to the main wavelength of a green phosphor is used as a designed central wavelength. In the prior art, since projection lenses designed for such green phosphor are used also for red and blue cathode-ray tubes, the design for red and blue projection is not optimal. Consequently, the reproduced color image is not the best image, either. 
     SUMMARY OF THE INVENTION 
     It is an object of the present invention to provide a color display device of a projection type having improved focusing performance. 
     It is another object of the present invention to provide a color display device of a projection type having improved brightness. 
     According to the present invention, in order to achieve the above-mentioned objects, there are provided optical projection devices for projecting images onto the same screen for a plurality of color image sources such as, for example, red, green and blue sources; at least two of the optical projection devices in such plural color image sources are made different in optical characteristics; and an optical projection device having the highest focusing performance is provided for the color image source of color (e.g. green) which is the highest in luminosity. In the present invention, moreover, an optical projection device which is the brightest (that is, whose F number is the lowest or effective lens surface diameter is the largest) is provided for the color image source of color (e.g. blue) of the lowest maximum luminance. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     FIGS. 1 to 8 and 25 illustrate an embodiment of the present invention; 
     FIG. 9 is a longitudinal sectional view showing a projection television device using projection lenses according to the present invention; 
     FIG. 10 is an emission spectral characteristic diagram of a green phosphor; 
     FIGS. 11 and 12 are views explanatory of the present invention; 
     FIG. 13 is an emission spectral characteristic diagram of a blue phosphor; 
     FIG. 14 is an emission spectral characteristic diagram of a red phosphor; 
     FIG. 15 is a characteristic diagram showing MTF characteristics of the projection lenses illustrated in FIG. 2; 
     FIGS. 16 and 17 are explanatory views for the definition of the lens shape; 
     FIGS. 18 to 24 are characteristic diagrams showing MTF characteristics of the projection lenses embodying the present invention; and 
     FIGS. 26, 27 and 28 are views each showing a lens fixing portion of a lens barrel according to the present invention. 
    
    
     DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     FIGS. 1 and 2 each illustrate an optical system including two kinds of projection lenses mounted together in a projection television device. In FIG. 1, a projection lens 20G provided in correspondence to a green cathode-ray tube 7G is of a five-group six-lens construction including a convex cemented doublet 3, while projection lenses 20B and 20R provided in correspondence to blue and red cathode-ray tubes 7B, 7R are of a four-group four-lens construction. The projection lenses shown in FIG. 3, whose lens data are shown in Tables 1(A) and 1(B), are on a larger scale of the projection lens 20G illustrated in FIG. 1. Likewise, the projection lenses shown in FIG. 4, whose lens data are shown in Tables 2(A) and 2(B), are on a larger scale of the projection lenses 20B and 20R illustrated in FIG. 1. Projection images projected through those projection lenses are combined on a screen 30. 
     The reason why a convex cemented doublet is used as the third group lens 3 of the projection lens 20G corresponding to the green cathode ray tube 7G will now be stated. Generally, the focusing performance of a projection television device depends on the focusing performance of a green projection image which is the highest in luminosity. Since the emission spectrum of the phosphor used in the green cathode-ray tube has spurious wavelengths in addition to a main wavelength, as shown in FIG. 10, there occurs chromatic aberration even in the green projection image alone. To diminish this chromatic aberration, the third group lens 3 is constituted by a convex cemented doublet consisting of a concave lens 3b of high dispersion (low Abbe&#39;s number) and a convex lens 3a of low dispersion (high Abbe&#39;s number). As to the red projection image, chromatic aberration does not occur because the emission spectrum of the phosphor is of a short wavelength as shown in FIG. 14. On the other hand, as to the blue projection image, the emission spectrum of the phosphor covers a wide range of wavelength of emitted light as shown in FIG. 13 and the deterioration of the focusing performance caused by chromatic aberration is conspicuous, but since the luminance is the lowest among the three colors, the focusing performance in the three-color mixture is little influenced. In FIG. 15, MTF (Modulation Transfer Function) of 300 TV lines obtained by green, red and blue lights from the respective cathode-ray tubes utilizing conventional lenses was determined by calculation and sagittal-meridional averages are illustrated. It is seen that the foregoing tendency is exhibited. In the embodiment shown in FIG. 2, in order to attain both the improvement of brightness of the projection television device and the improvement of the focusing performance, th projection lenses 20G and 20B provided in correspondence to the green and blue cathode-ray tubes 7G, 7B each have a five-group six-lens construction using a convex cemented doublet, and the projection lens 20R provided in correspondence to the red cathode-ray tube 7R has a four-group four-lens construction. Generally, projection lenses can be made bright, low in F value, by increasing the number of constituent lenses. The projection lenses shown in FIG. 3, whose lens data are set forth in Tables 1(A) and 1(B), have an F value of 0.93. This is 15% brighter as compared with the F value of 1.0 of the projection lens shown in FIG. 4, whose lens data are set forth in Tables 2(A) and 2(B). Another method for improving the focusing performance and brightness will now be described. FIG. 25 is a sectional side view of the embodiment being considered, in which positions passing through constituent lenses of a light ray which determines the brightness of the picture plane center were determined by tracing the light ray and the results obtained are illustrated. The focusing performance can be improved by making small the effective aperture of lens surfaces S 5  and S 6  of the third group lens 3 which defines the image brightness. Thus, in this embodiment the effective lens aperture of the third group lens 3 is made small, but some lens construction has a different lens surface which determines the brightness of the image plane center. In this case, it goes without saying that the same effect is obtained by making small the effective aperture of another lens (e.g. a surface S 4  of a second group lens 2). On the other hand, brightness can be improved by enlarging the effective aperture of lens surface contrary to the method described above. 
     FIGS. 3, 5, 6, 7 and 8 are sectional views showing principal portions of lenses of optical systems for projection television. The lens construction shown in FIG. 4 is the same as that disclosed in a patent application filed Apr. 29, 1988 (Ser. No. 188,482) now U.S. Pat. No. 4,948,237. In FIG. 3, P 1  denotes the fluorescent face of a cathode-ray tube; numeral 7 denotes a panel of the cathode-ray tube; numeral 6 denotes a cooling liquid; numeral 5, a fifth group lens; numeral 4, a fourth group lens; numeral 3, a third group lens; numeral 2, a second group lens; and numeral 1, a first group lens. An inner barrel 8 in which are incorporated the first lens 1 to the fourth lens 4 is positioned and fixed to an outer barrel 9 with fixing bolts 11. The outer barrel 9 is fixed with bolts to a bracket 10 through a fixing plate 12. The optical system of this embodiment is constructed so that the best performance is obtained when a 5.4 inch raster on the CRT fluorescent face is magnified and projected onto a screen. The magnification in such magnified projection is 8.4X in the case of the lens data shown in Tables 1(A), 1(B) and Tables 2(A), 2(B), and it is 9.3 X in the case of the lens data shown in Tables 3 to 7. The field angle of lens is 72° in the example shown in Tables 1 and 2, while it is 78° in the example shown in Tables 3 to 7. In both cases, high field angles are realized, and even where only one turn-up mirror 14 is used as shown in 9, it is possible to realize a sufficiently compact set. The first group lens 1 is of an aspherical shape for eliminating spherical aberration based on the lens aperture. The second group lens 2 is of an aspherical shape for eliminating astigmatism and coma aberration. The third group lens 3 is constituted by a glass lens and has as large a power as possible in order to diminish focus drift caused by changes of temperature. The fourth group lens 4, for eliminating coma aberration of a high order, has an aspherical shape and has as small a power as possible. The fifth group lens is a lens for the correction of curvature of image field, having an aspherical surface at its air-side interface for the correction of an off-axis sagittal aberration. The CRT fluorescent face P 1  has a curvature for the correction of an image field curvature. In particular, if the fluorescent face P 1  is made aspherical for correcting an image field curvature of a high order, it will become possible to effect a more accurate correction. 
     Generally, the fluorescent face P 1  of the CRT panel 6 is formed by pressing and not subjected to a post-processing. Therefore, no matter whether its shape after pressing is spherical or aspherical, the manufacturing method itself does not change. 
     On the other hand, the other lenses than the third group lens are constituted by plastic lenses and are designed to minimize power, whereby they are thinned. Besides, the formability is improved by reducing the difference in wall thickness between the central portion and the peripheral portion. 
     Conventional projection lenses range in focal length from 100 mm to 140 mm, while in the embodiment of the invention the focal length of an entire projection lens system is about 80 mm as shown in Table 8 and thus the reduction of chromatic aberration is realized. The following description is now provided about diminishing chromatic aberration by making the focal length short with reference to drawings. FIG. 11 is a longitudinal sectional view for explaining the reduction of an on axis chromatic aberration. Assuming that the projection lens is a single thin-walled lens of a focal length f, and that the fluorescent face--lens spacing and the lens--screen spacing are a and b, respectively, the following imaging equation is given: ##EQU1## 
     If the radii of curvature of both surfaces of the-lens are r 1  and r 2 , ##EQU2## 
     The increase of the spot diameter, Δd, is given by the following equation using F number and magnification M: ##EQU3## 
     
         And: 
    
     
         M·f≈b . . .                               (5) 
    
     Thus, the increase of the spot diameter, Δd, due to chromatic aberration is proportional to the focal length f. In addition to the reduction of chromatic aberration described above, the third group lens 3 in this embodiment is constituted by a cemented doublet consisting of lenses 3a and 3b. The lens 3b shown in Tables 1, 3(C), 4(C), 5(C) and 6 is a concave lens made of a high dispersion material, while the lens 3a is a convex lens made of a low dispersion material. Chromatic aberration is diminished by cementing the two together. FIG. 12 shows the results of calculation made about a longitudinal chromatic aberration which occurs in the projection lens described above. In the coordinates of a sectional side view of the lens shown in the same figure, if in the optical axis of the lens, l, l&#39;, the direction from l to l&#39; is a positive direction, the radius of curvature of the surface B has a positive sign because the radius of curvature is assumed to be positive when the center lies in the positive direction. The axis of abscissa in FIG. 12 represents the reciprocal of the radius of curvature of the cemented surface B, and from this figure it is seen that a longitudinal chromatic aberration can be diminished by making small the radius of curvature of the surface B. However, making small the radius of curvature of the surface B results in increase in the amount of sag at the outermost peripheral portion. Consequently, if a marginal portion of the lens is ensured, the convex lens becomes very large in its wall thickness. For this reason, the radius of curvature of the surface B cannot be made so small. In the case where the radius of curvature of the surface B is fixed, as is apparent from FIG. 12, the action of the concave lens is enhanced and the chromatic aberration correcting ability is greatly improved by making the surface A, namely the CRT-side face, planar or convex (not shown) on the screen side rather than making it convex on the CRT side. In the projection lenses used in the present invention, chromatic aberration can be diminished to a great extent by making the CRT-side surface of the foregoing concave lens of high dispersion planar or convex on the screen side. Possible concrete lens data of the projection lenses of the present invention described above are as shown in Tables 1 and 3 to 7. How to read these lens data will now be explained with reference to Table 1(A). Table 1(A) shows data dividedly to those in a spherical system which mainly covers the lens are near the optical axis and those in an aspherical system which covers the outer peripheral portion. According to this table, the radius of curvature of the screen is ∞ (i.e. plane); the distance (space between faces) on the optical axis from the screen to the surface S 1  of the first lens group 1 is 787.6 mm; and the refractive index of the medium (air) in that distance is 1.0. It is also shown therein that the radius of curvature of the surface S 1  of the first lens group 1 is 97.999 mm (the center of curvature is on the fluorescent face side), that the spacing (space between faces) on the optical axis between the lens surfaces S 1  and S 2  is 8.874 mm, and that the refractive index of the medium in that spacing is 1.49334. Further data are shown likewise, and lastly it is shown that the radius of curvature of the fluorescent face Pl of the CRT panel 7 is 341.28 mm, that the thickness on the optical axis of the CRT panel 7 is 13.4 mm, and that the refractive index is 1.53983. Next, in Table 1(B) there are shown aspherical coefficients with respect to the surfaces S 1 , S 2  of the first group lens 1, the surfaces S 3 , S 4  of the second group lens 2, the surfaces S 8 , S 9  of the fourth group lens 4, the surface S 10  of the fifth group lens 5, and the fluorescent face P 1 . The aspherical coefficients as referred to herein indicate coefficients obtained when the face shape is expressed by the following equation: ##EQU4## In the above equation, Z represents the height (relation of r) of the lens surface when the optical axis direction is plotted along Z axis and the radial direction of the lens is plotted along r axis; as shown in FIGS. 16 and 17; r represents a radial distance; and R D  represents a radius of curvature. Therefore, once the coefficients CC, AE, AF, AG and AH are given, the lens surface height, that is, the shape, is determined in accordance with the above equation. FIG. 17 is a view explanatory of aspherical surface. By substituting into the above aspherical terms the respective values there is obtained a lens surface which is deviated by S s (r) -A s (r) from the lens surface in the spherical system alone. The surface S 11  of the fifth group lens 5 in Table 1 indicates that all of the aspherical coefficients are zero and the lens surface is spherical. The method of reading the data shown in Tables 1(A) and 1(B) is as described above. Tables 2 to 7 show concrete examples of other lens data. Tables 3(C), 4(C) and 5(C) show lens data on the case where cemented convex doublet consisting of a concave lens of high dispersion and a convex lens of low dispersion is used as the third group lens 3 shown in the respective tables (A). According to the projection lenses of the present invention, as is apparent from those tables, a high focusing performance can be attained without change in shape of the first, second, fourth and fifth group correction lenses even in the case where the convex glass lens as the third group lens 3 is changed to the cemented convex lens of concave and convex lenses. 
     FIG. 1 is a sectional side view of projection lenses corresponding to the lens data of Tables 1(A) and 1B, and FIG. 2 is a sectional side view of projection lenses corresponding to the lens data of Tables 2(A) and 2(B). Further, FIGS. 7 and 8 correspond to Tables 7 and 6, respectively. The fifth group lenses 5 used in both examples are of the same shape and thus a common use of constituent lens is realized. FIG. 5 is a sectional side view of projection lenses corresponding to the lens data of Tables 3(A) and 3(B), and FIG. 6 is a sectional side view of projection lenses corresponding to the lens data of Tables 3(B) and 3(C). 
     FIGS. 18 to 24 shows the results of evaluation on the focusing characteristic based on MTF (Modulation Transfer Function) obtained when a 5.4 inch image on the fluorescent face is projected magnifiedly onto the screen, using the projections lenses of the present invention described above. The phosphor emission spectrum shown in FIG. 10 was used. 
     FIG. 18 is a characteristic diagram corresponding to Tables 1(A) and 1(B); FIG. 19 is a characteristic diagram corresponding to Tables 2(A) and 2(B); FIG. 20, 3(A) and 3(C) are characteristic diagrams corresponding to Tables 3(A), (B) and Tables 3(B), (C), respectively; FIG. 21, 4(A) and 4(C) are characteristic diagrams corresponding to Tables 4(A), (B) and 4(B), (C), respectively; and FIG. 22, 5(A) and 5(C) are characteristic diagrams corresponding to Tables 5(A), (B) and 5(B), (C), respectively. In the illustrated case, 300 TV lines are taken as black and white stripe signals. It is seen that good MTF characteristics are shown in FIGS. 18 and 20 to 24. 
     Further, from comparison between (A) and (C) in each of FIGS. 20, 21 and 22 it is seen that a focusing performance improving effect is attained by the use of the cemented convex double consisting of concave and convex lenses of high and low dispersion, respectively. In the examples shown in Table 1 and Tables 3 to 7, if the focal length of the entire system is f 0  and the focal lengths of the first to fifth group lenses 1, 2, 3, 4, 5 are f 1 , f 2 , f 3 , f 4  and f 5 , respectively, there exist the relationships shown in Table 8, namely: ##EQU5## In this embodiment, most of the positive refractive power of the entire lens system is obtained by the third group lens 3 which is a glass lens, whereby the temperature drift of focus is diminished. Also when a common use of other lenses is considered, the above method is desirable. 
     Now, the shape of lens surface will be explained. The following can be said about the aspherical shapes of the screen-side lens surface S 1  of the first group lens 1, the second group-side lens surface S 2  thereof, the first group-side lens surface S 3  of the second group lens 2, the third group-side lens surface S 4  thereof, the third group-side lens surface S 8  (S 7  in FIGS. 5 and 7) of the fourth group lens 4 and the fifth group-side lens surface S9 (S8 in FIGS. 5 and 7) of the fourth group lens 4. Explanation will be given below with reference to FIG. 17. 
     FIG. 17 is an explanatory view showing an aspherical lens shape. When the optical axis direction is plotted along Z axis in the radial direction of the lens, if the height of lens surface is of a spherical system or R D  alone and if the substitution of the aspherical coefficients CC, AE, AF, AG and AH into the equation (1) is expressed by As(r), the following relationship exists, as shown in Table 9, as the A s (r) to S s (r) ratio of the screen-side lens surface of the first group lens 1 if the clap radius is substituted into r: 
     
         -0.08&lt;A.sub.s /S.sub.s &lt;0.05 
    
     Likewise, as to the second greens Surface of the first group lens 1, the following relationship exists: 
     
         0.20&lt;A.sub.s /S.sub.s &lt;0.52 
    
     As to the first group-side lens surface of the second group lens 2, the following relationship is valid, as shown in Table 10: 
     
         -1.26&lt;A.sub.s /S.sub.s &lt;0.06 
    
     Similarly, as to the third group-side lens surface of the second group lens 2, the following relationship is valid: 
     
         -0.07&lt;A.sub.s /S.sub.s &lt;1.16 
    
     Further, as to the third group-side lens surface of the fourth group lens 4, the following relationship holds good, as shown in Table 11: 
     
         -3.29&lt;A.sub.s /S.sub.s &lt;5.19 
    
     Likewise, as to fifth group-side lens surface of the fourth group lens 4, there exists the following relationship: 
     
         -1.58&lt;A.sub.s /S.sub.s &lt;0.21 
    
     As to the ratio of the space between faces 1 23 , of the first and second group constituent lenses to the focal length f 0 , of the entire projection lens system, there exists the following relationship, as shown in Table 12: 
     
         0.15&lt;1.sub.23 /f.sub.0 &lt;0.25 
    
     In order to ensure a relative illumination while maintaining the focusing performance, it is necessary to satisfy the following relationship: 
     
         0.15&lt;1.sub.23 /f.sub.0 
    
     But the following relationship is desired because as the above ratio becomes higher, the quantity of light in the middle area of the picture plane tends to decrease: 
     
         1.sub.23 /f.sub.0 &lt;0.25 
    
     Further, as to the ratio of the space between faces 1 23 , of the first and second group constituent lenses to that 1 45 , of the second and third group constituent lenses, the following relationship exists, as shown in Table 12: 
     
         23.0&lt;1.sub.23 /1.sub.45 &lt;40.0 
    
     Preferably, the following relationship should be satisfied in order to ensure the marginal thickness of lens while suppressing the amount of sag of the first group-side lens surface of the second group lens 2: 
     
         1.sub.23 /1.sub.45 &lt;40.0 
    
     On the other hand, in the case where the brightness of the picture plane center is ensured and the above value is made small, it is necessary to increase the effective aperture of the second group lens 2. For this reason, it is desirable to satisfy the following relationship: 
     
         23.0&lt;1.sub.23 /1.sub.45 
    
     As to the ratio of the space between faces 1 910 , of the fourth and fifth group constituent lenses to that L 0 , of the fluorescent face and the third group constituent lens, there exists the following relationship, as shown in Table 13: 
     
         0.32&lt;1.sub.910 /L.sub.0 &lt;0.39 
    
     In order to increase the quantity of light Of the picture plane periphery while maintaining the focusing performance, it is desirable to satisfy the following relationship: 
     
         1.sub.910 /L.sub.0 &lt;0.39 
    
     Further, as to the ratio of the space between faces 1 78 , of the third and fourth group constituent lenses to the above 1 910 , the following relationship is satisfied: 
     
         0.35&lt;1.sub.78 /1.sub.910 &lt;0.79 
    
     For improving the focusing performance, the following relation is desired: 
     
         0.35&lt;1.sub.78 /1.sub.910 
    
     But a value of the above ratio exceeding 0.79 is not desirable because the relative illumination will be decreased. 
     Next, as to the shape of the fluorescent face, it is aspherical as shown in Tables 1 to 7, and the center of curvature thereof lies on the screen side. The radius of curvature is larger at the peripheral portion than at the central portion. 
     FIG. 7 illustrates the arrangement of conventional optical parts of a projection type television, which parts are a turn-up mirror 14, projection lenses 15, a cathode-ray tube 16 and a screen 13. 
     In the projection lenses of the present invention, the focal length in 45-inch projection is 787.6 mm and that in 50-inch projection is 790.0 mm, thus are sufficiently short. And as shown in FIG. 9, with only one turn-up mirror, it is possible to attain a compact construction of the set. 
     Features of the present invention has been described above on the basis of the lens data. 
     Now, concrete constructions for changing the brightness using the same barrel will be described with reference to FIGS. 25, 26, 27 and 28. FIG. 25 is a sectional side view embodying the present invention, in which two solid lines with arrows indicate heights at which upper and lower limit rays of light emitted from an object point on the optical axis ll&#39; pass through the constituent lenses, the said heights having been obtained by tracing the light rays. In this embodiment, the brightness is determined according to the effective diameter of the fluorescent face-side lens surface S 6  of the third group lens 3. 
     FIG. 26 is an enlarged view of portion A in FIG. 25. For changing the effective lens aperture, a groove 19 is formed in a clap 18, and the clap 18 is cut off or folded off for enlarging the effective aperture. 
     In FIG. 26(a), a part of the clap is cut off and the third group lens 3 is held and fixed by the remaining portion, while in FIG. 26(b), the whole of the clap is cut off, in which the fixing of the third group lens 3 is effected by a slot 40 formed in the lens barrel. 
     FIGS. 27 and 28 are sectional views of the lens barrel obtained when b--b&#39; section in FIG. 25 is viewed in the arrowed direction. In both figures (a) shows the state before the clap is cut off or folded off, while (b) shows the state in which the clap has been cut off or folded off to enlarge the effective aperture. Thus, by using a clap capable of being cut off or folded off, it is possible to change the brightness without changing the barrel shape. 
     
                       TABLE 1(A)______________________________________         R.sub.DCurvatureRadius of                 FacesBetweenSpace                          ##STR1##______________________________________Sphe- Screen           ∞ 787.60 1.0ricalSys- tem First Lens         S.sub.1  97.999  8.874                                  ##STR2##         S.sub.2  188.61  19.0   1.0 Second Lens         S.sub.3  -189.80 9.20                                  ##STR3##         S.sub.4  -160.57 0.8223 1.0 Third Lens         S.sub.5  73.028  31.00                                  ##STR4##         S.sub.6  -100.0  2.40                                  ##STR5##         S.sub.7  -298.27 12.20  1.0 Fourth Lens         S.sub.8  18188.0 9.1432                                  ##STR6##         S.sub.9  -198.57 30.906 1.0 Fifth Lens         S.sub.10 -52.60  3.4048                                  ##STR7##         S.sub.11 -50.774 12.00  1.44464Transparent    ∞MediumCRT       Face               13.40  1.53983Panel     Surface     Fluo-    -341.28     rescent     Face     P.sub.1______________________________________ 
    
     
                                           TABLE 1(B)__________________________________________________________________________      CC     AE         AF         AG          AH__________________________________________________________________________Asphe-    First    S.sub.1      -22.091248             7.1452882 × 10.sup.-7                        -1.6251140 × 10.sup.-9                                   4.8222738 × 10.sup.-13                                               -4.2599762 ×                                               10.sup.-17rical    LensSystem   S.sub.2      2.1841469             -1.3045701 × 10.sup.-6                        4.1991921 × 10.sup.-10                                   -1.8164626 × 10.sup.-13                                               3.6866791 ×                                               10.sup.-17    Second    S.sub.3      11.628045             2.2424447 × 10.sup.-6                        7.126260 × 10.sup.-10                                   -2.9057843 × 10.sup.-13                                               3.4258433 ×                                               10.sup.-17    Lens    S.sub.4      7.8451805             1.8531955 × 10.sup.-6                        9.786584 × 10.sup.-11                                   -9.7439316 × 10.sup.-15                                               -7.0563651 ×                                               10.sup.-18    Fourth    S.sub.8      198426.56             -9.8303516 × 10.sup.-9                        -3.2923198 × 10.sup.-10                                   2.0638499 × 10.sup.-13                                               -1.8752912 ×                                               10.sup.-17    Lens    S.sub.9      10.558845             8.3145824 × 10.sup.-7                        3.0054714 × 10.sup.-10                                   - 1.7884294 × 10.sup.-13                                               1.7736483 ×                                               10.sup.-16    Fifth    S.sub.10      -0.93910939             -3.6342744 × 10.sup.-6                        1.6067425 × 10.sup.-9                                   -1.0267507 × 10.sup.-12                                               1.7319606 ×                                               10.sup.-16    Lens    S.sub.11      0      0          0          0           0Fluores-   4.5813494             -2.3355796 × 10.sup.-7                        1.182420 × 10.sup.-10                                   -1.4486896 × 10.sup.-14                                               5.5873481 ×                                               10.sup.-19centFace P.sub.1__________________________________________________________________________ ##STR8## 
    
     
                       TABLE 2(A)______________________________________         R.sub.DCurvatureRadius of                 FacesBetweenSpace                          ##STR9##______________________________________Sphe- Screen           ∞ 778.5  1.0ricalSys- tem First Lens         S.sub.1  92.857  9.0                                  ##STR10##         S.sub.2  134.27  39.0   1.0 Second Lens         S.sub.3  76.780  21.0                                  ##STR11##         S.sub.4  -309.25 21.5   1.0 Third Lens         S.sub.5  413.78  8.0                                  ##STR12##         S.sub.6  -165.41 32.546 1.0 Fourth Lens         S.sub.7  -50.924 3.4048                                  ##STR13##         S.sub.8  -50.774 12.00  1.44473Transparent    ∞MediumCRT       Face               13.40  1.53994Panel     Surface     Fluo-    -341.28     rescent     Face     P.sub.1______________________________________ 
    
     
                                           TABLE 2(B)__________________________________________________________________________      CC     AE         AF         AG          AH__________________________________________________________________________Asphe-    First    S.sub.1      -1.1641588             1.4528285 × 10.sup.-7                        -3.1447001 × 10.sup.-10                                   5.4649631 × 10.sup.-14                                               5.8785782 ×                                               10.sup.-19rical    LensSystem   S.sub.2      4.3103714             8.7222134 × 10.sup.-8                        -2.4314661 × 10.sup.-10                                   3.7769396 × 10.sup.-14                                               3.1237086 ×                                               10.sup.-18    Third    S.sub.5      -27.918533             -1.5742370 × 10.sup.-7                        3.5476133 × 10.sup.-10                                   2.5419564 × 10.sup.-13                                               -1.1244196 ×                                               10.sup.-16    Lens    S.sub.6      12.823207             8.5459834 × 10.sup.-7                        2.9324099 × 10.sup.-10                                   5.6273503 × 10.sup.-13                                               -1.5608238 ×                                               10.sup.-16    Fourth    S.sub.7      0.39626831             -7.2942424 × 10.sup.-7                        1.0023198 × 10.sup.-9                                   -3.4842929 × 10.sup.-13                                               9.8013676 ×                                               10.sup.-17    Lens    S.sub.8      0.0    0.0        0.0        0.0         0.0Fluores-   4.5813494             -2.3355796 × 10.sup.- 7                        1.1824200 × 10.sup.-10                                   -1.4486896 × 10.sup.-14                                               5.5873481 ×                                               10.sup.-19centFace P.sub.1__________________________________________________________________________ ##STR14## 
    
     
                       TABLE 3(A)______________________________________         R.sub.DCurvatureRadius of                 FacesBetweenSpace                          ##STR15##______________________________________Sphe- Screen           ∞ 790.0  1.0ricalSys- tem First Lens         S.sub.1  90.538  8.874                                  ##STR16##         S.sub.2  132.56  18.890 1.0 Second Lens         S.sub.3  -395.96 9.5                                  ##STR17##         S.sub.4  -121.26 0.5    1.0 Third Lens         S.sub.5  80.340  28.5                                  ##STR18##         S.sub.6  -7000.0 12.692 1.0 Fourth Lens         S.sub.7  409.26  7.2957                                  ##STR19##         S.sub.8  -305.62 27.836 1.0 Fifth Lens         S.sub.9  - 52.317                          3.3421                                  ##STR20##         S.sub.10 -50.132 12.00  1.44464Transparent    ∞MediumCRT       Face               13.4   1.53983Panel     Surface     Fluo-    -341.28     rescent     Face     P.sub.1______________________________________ 
    
     
                                           TABLE 3(B)__________________________________________________________________________      CC     AE         AF         AG          AH__________________________________________________________________________Asphe-    First    S.sub.1      -16.197183             1.1491170 × 10.sup.-6                        -2.4727174 × 10.sup.-9                                   8.1388013 × 10.sup.-13                                               -8.0439262 ×                                               10.sup.-17rical    LensSystem   S.sub.2      5.1115932             -8.8967122 × 10.sup.-7                        -8.8755521 × 10.sup.-10                                   4.2184259 × 10.sup.-13                                               -6.7878695 ×                                               10.sup.-17    Second    S.sub.3      34.294391             1.2839024 × 10.sup.-6                        5.5437765 × 10.sup.-10                                   -1.2751304 × 10.sup.-13                                               -4.5822250 ×                                               10.sup.-18    Lens    S.sub.4      -1.2040746             5.7451963 × 10.sup.-7                        -9.2368711 × 10.sup.-11                                   1.4119760 × 10.sup.-13                                               -3.8408993 ×                                               10.sup.-17    Fourth    S.sub.7      -124.71466             1.4982927 × 10.sup.-6                        -2.4047198 × 10.sup.-10                                   1.0682642 × 10.sup.-12                                               -6.6120374 ×                                               10.sup.-16    Lens    S.sub.8      -34.169188             2.1471051 × 10.sup.-6                        -1.3431777 × 10.sup.-                                   1.2647815 × 10.sup.-13                                               -6.7387725 ×                                               10.sup.-16    Fifth    S.sub.9      0.44327094             -2.1713278 × 10.sup.-6                        1.9994730 × 10.sup.-9                                   -1.4895256 × 10.sup.-12                                               6.0904636 ×                                               10.sup.-16    Lens    S.sub.10      0      0          0          0           0Fluores-   4.5813494             -2.3355796 × 10.sup.-7                        1.182420 × 10.sup.-10                                   -1.4486896 × 10.sup.-14                                               5.5873481 ×                                               10.sup.-19centFace P.sub.1__________________________________________________________________________ ##STR21## 
    
     
                       TABLE 3(C)______________________________________         R.sub.DCurvatureRadius of                 FacesBetweenSpace                          ##STR22##______________________________________Sphe- Screen           ∞ 790.0  1.0ricalSys- tem First Lens         S.sub.1  90.538  8.874                                  ##STR23##         S.sub.2  132.56  18.89  1.0 Second Lens         S.sub.3  -395.96 9.5                                  ##STR24##         S.sub.4  -121.26 0.5    1.0 Third Lens         S.sub.5  80.34   27.00                                  ##STR25##         S.sub.6  -75.0   1.5                                  ##STR26##         S.sub.7  -7000.0 12.692 1.0 Fourth Lens         S.sub.8  409.26  7.2957                                  ##STR27##         S.sub.9  -305.62 27.911 1.0 Fifth Lens         S.sub.10 -52.317 3.3421                                  ##STR28##         S.sub.11 -50.132 12.00  1.44464Transparent    ∞MediumCRT       Face               13.40  1.53983Panel     Surface     Fluo-    -341.28     rescent     Face     P.sub.1______________________________________ 
    
     
                       TABLE 4(A)______________________________________         R.sub.DCurvatureRadius of                 FacesBetweenSpace                          ##STR29##______________________________________Sphe- Screen           ∞ 790.0  1.0ricalSys- tem First Lens         S.sub.1  90.546  8.874                                  ##STR30##         S.sub.2  132.56  18.862 1.0 Second Lens         S.sub.3  -404.37 9.5                                  ##STR31##         S.sub.4  -119.97 0.5    1.0 Third Lens         S.sub.5  80.340  28.5                                  ##STR32##         S.sub.6  ∞ 12.631 1.0 Fourth Lens         S.sub.7  413.98  7.2957                                  ##STR33##         S.sub.8  -301.02 27.696 1.0 Fifth Lens         S.sub.9  - 52.122                          3.3421                                  ##STR34##         S.sub.10 -50.132 12.00  1.44464Transparent    ∞MediumCRT       Face               13.4   1.53983Panel     Surface     Fluo-    -341.28     rescent     Face     P.sub.1______________________________________ 
    
     
                                           TABLE 4(B)__________________________________________________________________________       CC     AE         AF         AG         AH__________________________________________________________________________Aspherical First     S.sub.1       -16.189407              1.1498669 × 10.sup.-6                         -2.4753948 × 10.sup.-9                                     8.1308045 × 10.sup.-13                                               -8.0043502 ×                                               10.sup.-17System Lens     S.sub.2         5.1602704              -8.7814749 × 10.sup.-7                         -8.8572238 × 10.sup.-10                                     4.2383561 × 10.sup.-13                                               -6.9523697 ×                                               10.sup.-17 Second     S.sub.3        32.446014              1.2892306 × 10.sup.-6                          5.4255156 × 10.sup.-10                                    -1.2512788 × 10.sup.-13                                               -4.4846432 ×                                               10.sup.-18 Lens     S.sub.4        -0.97792351              5.5951091 × 10.sup.-7                         -8.8977145 × 10.sup.-11                                     1.4001040 × 10.sup.-13                                               -3.7519788 ×                                               10.sup.-17 Fourth     S.sub.7        -8.4842262              1.3331337 × 10.sup.-6                         -2.5093905 × 10.sup.-10                                     1.1400195 × 10.sup.-12                                               -6.9844876 ×                                               10.sup.-16 Lens     S.sub.8       - 12.595605              2.2209970 × 10.sup.-6                          1.4163943 × 10.sup.-11                                     1.2598403 × 10.sup.-12                                               -6.8300968 ×                                               10.sup.-16 Fifth     S.sub.9         0.43685383              -2.2490422 × 10.sup.-6                          2.1655113 × 10.sup.-9                                    -1.6291118 × 10.sup.-12                                                 6.570964 ×                                               10.sup.-16 Lens     S.sub.10         0    0          0          0          0Fluorescent   4.5813494              -2.3355796 × 10.sup.-7                           1.182420 × 10.sup.-10                                    -1.4486896 × 10.sup.-14                                                5.5873481 ×                                               10.sup.-19Face P.sub.1__________________________________________________________________________ ##STR35## 
    
     
                       TABLE 4(C)______________________________________         R.sub.D CurvatureRadius of                 FacesBetweenSpace                          ##STR36##______________________________________Sphe- Screen           ∞ 790.0  1.0ricalSys- tem First Lens         S.sub.1  90.546  8.874                                  ##STR37##         S.sub.2  132.65  18.864 1.0 Second Lens         S.sub.3  -404.37 9.5                                  ##STR38##         S.sub.4  -119.97 0.5    1.0 Third Lens         S.sub.5  80.340  26.5                                  ##STR39##         S.sub.6  -75.0   2.0                                  ##STR40##         S.sub.7  ∞ 12.631 1.0 Fourth Lens         S.sub.8  413.98  7.2957                                  ##STR41##         S.sub.9  -301.02 27.771 1.0 Fifth Lens         S.sub.10 -52.122 3.3421                                  ##STR42##         S.sub.11 -50.132 12.00  1.44464Transparent    ∞   13.4     1.53983MediumCRT       FacePanel     Surface     Fluo-    -341.28     rescent     Face P.sub.1______________________________________ 
    
     
                       TABLE 5(A)______________________________________         R.sub.D CurvatureRadius of                 FacesBetweenSpace                          ##STR43##______________________________________Sphe- Screen           ∞ 790.0  1.0ricalSys- tem First Lens         S.sub.1  85.726  8.874                                  ##STR44##         S.sub.2  130.12  19.715 1.0 Second Lens         S.sub.3  -279.36 9.5                                  ##STR45##         S.sub.4  -114.17 0.5    1.0 Third Lens         S.sub.5  72.267  30.0                                  ##STR46##         S.sub.6  688.79  9.8229 1.0 Fourth Lens         S.sub.7  1341.8  7.2957                                  ##STR47##         S.sub.8  -203.97  27.984                                 1.0 Fifth Lens         S.sub.9  -54.749 3.3421                                  ##STR48##         S.sub.10  -50.132                           12.00 1.44464Transparent    ∞   13.4     1.53983MediumCRT       FacePanel     Surface     Fluo-    -341.28     rescent     Face P.sub.1______________________________________ 
    
     
                                           TABLE 5(B)__________________________________________________________________________       CC      AE        AF         AG         AH__________________________________________________________________________Aspherical First     S.sub.1        -15.26860                1.1259281 × 10.sup.-6                         -2.5413804 × 10.sup.-9                                     8.2202431 × 10.sup.-13                                               -7.7196306 ×                                               10.sup.-17System Lens     S.sub.2          4.9164934               -1.3574354 × 10.sup.-6                          -7.591547 × 10.sup.-10                                     3.8837835 × 10.sup.-13                                               -6.4454178 ×                                               10.sup.-17 Second     S.sub.3        21.130920                1.2714318 × 10.sup.-6                          7.8633122 × 10.sup.-10                                    -1.4432715 × 10.sup.-13                                               -1.1645212 ×                                               10.sup.-17 Lens     S.sub.4        -0.87876731                6.5197048 × 10.sup.-7                          6.4518405 × 10.sup.-11                                     1.2614812 × 10.sup.-13                                               -4.7224879 ×                                               10.sup.-17 Fourth     S.sub.7       -9829.5977                9.3400439 × 10.sup.-7                          1.3492410 × 10.sup.-10                                     5.9239457 × 10.sup.-13                                               -4.5415641 ×                                               10.sup.- 16 Lens     S.sub.8       -14.516611                1.9059871 × 10.sup.-6                          2.5723243 × 10.sup.-11                                     1.2099115 × 10.sup.-12                                               -5.7567451 ×                                               10.sup.-16 Fifth     S.sub.9         0.36361086               -1.7202501 × 10.sup.-6                          5.6167071 × 10.sup.-10                                    -3.2185019 × 10.sup.-13                                                1.6191711 ×                                               10.sup.-16 Lens     S.sub.10         0     0         0          0          0Fluorescent    4.5813494               -2.3355796 × 10.sup.-7                           1.182420 × 10.sup.-10                                    -1.4486896 × 10.sup.-14                                                5.5873481 ×                                               10.sup.-19Face P.sub.1__________________________________________________________________________ ##STR49## 
    
     
                       TABLE 5(C)______________________________________         R.sub.DCurvatureRadius of                 FacesBetweenSpace                          ##STR50##______________________________________Sphe- Screen           ∞ 790.0  1.0ricalSys- tem First Lens         S.sub.1  85.726  8.874                                  ##STR51##         S.sub.2  130.12  19.715 1.0 Second Lens         S.sub.3  -279.36 9.5                                  ##STR52##         S.sub.4  -114.17 0.5    1.0 Third Lens         S.sub.5  72.267  28.5                                  ##STR53##         S.sub.6  -75.0   1.5                                  ##STR54##         S.sub.7  688.79  9.8227 1.0 Fourth Lens         S.sub.8  1341.8  7.2957                                  ##STR55##         S.sub.9  -203.97 27.984 1.0 Fifth Lens         S.sub.10 -54.748 3.3421                                  ##STR56##         S.sub.11 -50.132 12.00  1.44464Transparent    ∞   13.4     1.53983MediumCRT       FacePanel     Surface     Fluo-    -341.28     rescent     Face     P.sub.1______________________________________ 
    
     
                       TABLE 6(A)______________________________________         R.sub.DCurvatureRadius of                 FacesBetweenSpace                          ##STR57##______________________________________Sphe- Screen           ∞ 790.0  1.0ricalSys- tem First Lens         S.sub.1  99.371  8.874                                  ##STR58##         S.sub.2  135.02  18.997 1.0 Second Lens         S.sub.3  -271.78 9.5                                  ##STR59##         S.sub.4  -176.11 0.5    1.0 Third Lens         S.sub.5  73.877  30.0                                  ##STR60##         S.sub.6  -78.00  2.5                                  ##STR61##         S.sub.7  -205.90 13.3   1.0 Fourth Lens         S.sub.8  516.05  7.2957                                  ##STR62##         S.sub.9  -294.53 30.113 1.0 Fifth Lens         S.sub.10 -51.543 3.3421                                  ##STR63##         S.sub.11 -50.132 12.00  1.44464Transparent    ∞   13.4     1.53983MediumCRT       FacePanel     Surface     Fluo-    -341.28     rescent     Face     P.sub.1______________________________________ 
    
     
                                           TABLE 6(B)__________________________________________________________________________       CC     AE         AF         AG         AH__________________________________________________________________________Aspherical First     S.sub.1       -17.822083              9.6200438 × 10.sup.-7                         -2.2860192 × 10.sup.-9                                     7.5216228 × 10.sup.-13                                               -7.5183611 ×                                               10.sup.-17System Lens     S.sub.2         4.3537569              -8.8163574 × 10.sup.-7                         -9.8732666 × 10.sup.-10                                     3.8056613 × 10.sup.-13                                               -4.1792963 ×                                               10.sup.-17 Second     S.sub.3       -56.912933              1.4778507 × 10.sup.-6                          2.1591005 × 10.sup.-10                                    -4.7389959 × 10.sup.-14                                               -1.5920805 ×                                               10.sup.-17 Lens     S.sub.4       -23.624878              8.2483166 × 10.sup.-7                         -4.2019499 × 10.sup.-11                                     1.1675746 × 10.sup.-13                                               -4.8150963 ×                                               10.sup.-17 Fourth     S.sub.8        157.41711              4.0271578 × 10.sup.-7                          1.3190580 × 10.sup.-11                                    -1.4982471 × 10.sup.-13                                                4.1693026 ×                                               10.sup.-17 Lens     S.sub.9       -27.295013              9.4030571 ×  10.sup.-7                          4.5176818 × 10.sup.-10                                    -3.5836557 × 10.sup.-13                                                1.5429416 ×                                               10.sup.-16 Fifth     S.sub.10         0.53007919              -3.4957948 × 10.sup.-6                          3.5448675 × 10.sup.-9                                    -2.3173867 × 10.sup.-12                                                7.1377370 ×                                               10.sup.-16 Lens     S.sub.11         0    0          0          0          0Fluorescent   4.5813494              -2.3355796 × 10.sup.-7                           1.182420 × 10.sup.-10                                    -1.4486896 × 10.sup.-14                                                5.5873481 ×                                               10.sup.-19Face P.sub.1__________________________________________________________________________ ##STR64## 
    
     
                       TABLE 7(A)______________________________________         R.sub.DCurvatureRadius of                 FacesBetweenSpace                          ##STR65##______________________________________Sphe- Screen           ∞ 790.0  1.0ricalSys- tem First Lens         S.sub.1  92.496  8.2061                                  ##STR66##         S.sub.2  140.26  12.697 1.0 Second Lens         S.sub.3  -407.37 11.749                                  ##STR67##         S.sub.4  -322.90 0.5    1.0 Third Lens         S.sub.5  95.176  21.675                                  ##STR68##         S.sub.6  -172.61 21.843 1.0 Fourth Lens         S.sub.7  1127.8  7.2957                                  ##STR69##         S.sub.8  -151.78 27.984 1.0 Fifth Lens         S.sub. 9 -51.543 3.3421                                  ##STR70##         S.sub.10 -50.132 12.00  1.44464Transparent    ∞   13.4     1.53983MediumCRT       FacePanel     Surface     Fluo-    -341.28     rescent     Face     P.sub.1______________________________________ 
    
     
                                           TABLE 7(B)__________________________________________________________________________       CC     AE        AF         AG          AH__________________________________________________________________________Aspherical First     S.sub.1       -14.252677               8.9568914 × 10.sup.-7                        -2.1814219 × 10.sup.-9                                   7.7891290 × 10.sup.-13                                               -9.2050459 ×                                               10.sup.-17System Lens     S.sub.2         5.9230633              -7.8229976 × 10.sup.-7                        -8.0139340 × 10.sup.-10                                   5.5336996 × 10.sup.-13                                                -1.288945 ×                                               10.sup.-16 Second     S.sub.3       -18.355804               7.0309511 × 10.sup.-7                         4.1546167 × 10.sup.-10                                   2.8583947 × 10.sup.-14                                               -1.0394242 ×                                               10.sup.-16 Lens     S.sub.4       -17.095596               2.6480564 × 10.sup.-7                        -3.5712502 × 10.sup.-11                                   6.2280096 × 10.sup.-14                                               -5.2936423 ×                                               10.sup.-17 Fourth     S.sub.7        768.32666              -1.7966119 × 10.sup.-7                         3.8129366 × 10.sup.-10                                   9.3625872 × 10.sup.-15                                                1.6871918 ×                                               10.sup.-16 Lens     S.sub.8       -21.525909              -3.2374192 ×  10.sup.-7                         7.2176332 × 10.sup.-10                                   -1.1933054 × 10.sup.-13                                                2.5380283 ×                                               10.sup.-16 Fifth     S.sub.9         0.53007919              -3.4957948 × 10.sup.-6                         3.5448675 × 10.sup.-9                                   -2.3173867 × 10.sup.-12                                                7.1377370 ×                                               10.sup.-16 Lens     S.sub.10         0    0         0          0           0Fluorescent   4.5813494              -2.3355796 × 10.sup.-7                          1.182420 × 10.sup.-10                                   -1.4486896 × 10.sup.-14                                                5.5873481 ×                                               10.sup.-19Face P.sub.1__________________________________________________________________________ ##STR71## 
    
     
                       TABLE 8______________________________________                      Focal                      Length                      of                      EntireLens   Power Distribution of Constituent Lenses                            SystemNo.    f.sub.0 /f.sub.1          f.sub.0 /f.sub.2                  f.sub.0 /f.sub.3                        f.sub.0 /f.sub.4                              f.sub.0 /f.sub.5                                      f.sub.0 (m)______________________________________1          0.2153  0.0450                    0.8029                          0.2166                                -0.5655 86.243   (A)    0.1826  0.2345                    0.6430                          0.2308                                -0.5417 82.13    (C)    0.1827  0.2346                    0.6423                          0.2309                                -0.5420 82.184   (A)    0.1829  0.2403                    0.6371                          0.2318                                -0.5499 82.18    (C)    0.1830  0.2403                    0.6363                          0.2320                                -0.5452 82.235   (A)    0.2058  0.2128                    0.6423                          0.2274                                -0.5060 81.74    (C)    0.2065  0.2135                    0.6434                          0.2282                                -0.5078 82.026          0.1439  0.0857                    0.8262                          0.2209                                -0.5669 84.207          0.1893  0.0272                    0.8073                          0.3021                                -0.5526 82.08______________________________________ f.sub.1 : Focal length of the first group f.sub.2 : Focal length of the second group f.sub.3 : Focal length of the third group f.sub.4 : Focal length of the fourth group f.sub.5 : Focal length of the fifth group 
    
     
                       TABLE 9______________________________________       Amount of Amount of       Sag in    Sag in           Clap       Aspherical                 Spherical        Ra-  Lens System    System           dius  No.  (mm):A.sub.s                 (mm):S.sub.s                           A.sub.s /S.sub.s                                  (mm)______________________________________FirstIm-     1      -0.9715 17.5764 -0.0553                                      56.0Lens age-    3      0.6670  15.0587 0.0443 50.0side    4      0.6382  15.0571 0.0424 50.0Lens    5      0.4280  16.0916 0.0266 50.0Sur-    6      -1.0956 15.3139 -0.0715                                      53.0face    7      0.2798  16.6903 0.0168 53.0S.sub.1Im-     1      2.1481   7.6292 0.2816 53.1age-    3      3.9249   8.9958 0.4363 48.0side    4      3.9999   8.9894 0.4450 48.0Lens    5      2.5527   9.1770 0.2782 48.0Sur-    6      2.0852  10.2076 0.2043 51.5face    7      5.0409   9.7969 0.5145 51.5S.sub.2______________________________________ 
    
     
                       TABLE 10______________________________________       Amount of Amount of       Sag in    Sag in           Clap       Aspherical                 Spherical        Ra-  Lens System    System           dius  No.  (mm):A.sub.s                 (mm):S.sub.s                           A.sub.s /S.sub.s                                  (mm)______________________________________Sec- Im-     1      5.9159  -6.0399 -0.9795                                      47.5ond  age-    3      2.4288  -2.0256 -1.1991                                      40.0Lens side    4      2.4819  -1.9832 -1.2515                                      40.0Lens    5      2.1144  -2.8785 -0.7345                                      40.0Sur-    6      4.1429  -3.9555 -1.0474                                      46.2face    7      -0.1480 -2.9215 0.0507 48.7S.sub.3Im-     1      0.5107  -7.4365 -0.0687                                      48.3age-    3      -4.9460 -6.7872 0.7287 40.0side    4      -5.0804 -6.8648 0.7401 40.0Lens    5      -4.7685 -7.2364 0.6590 40.0Sur-    6      -1.0727 -5.9792 0.1794 45.5face    7      -4.2128 -3.6480 1.1548 48.4S.sub.4______________________________________ 
    
     
                       TABLE 11______________________________________       Amount of Amount of       Sag in    Sag in           Clap       Aspherical                 Spherical        Ra-  Lens System    System           dius  No.  (mm):A.sub.s                 (mm):S.sub.s                           A.sub.s /S.sub.s                                  (mm)______________________________________Fourth Im-    1      -0.1445 0.044   -3.2841                                      40.0Lens  age-   3      4.4821  1.8817  2.3819 39.2 side   4      4.4354  1.8601  2.3845 39.2 Lens   5      2.3887  0.5727  4.1709 39.2 Sur-   6      2.8234  1.4910  1.8936 39.2 face   7      3.5335  0.6815  5.1849 39.2 S.sub.8 Im-    1      -0.8092 -3.9481 0.2050 39.4 age-   3      3.8666  -2.4601 -1.5717                                      38.7 side   4      3.8427  -2.4981 -1.5382                                      38.7 Lens   5      2.8026  -3.7050 -0.7564                                      38.7 Sur-   6      0.6812  -2.5536 -0.2668                                      38.7 face   7      -0.8928 -5.0167 0.1780 38.7 S.sub.9______________________________________ 
    
     
                       TABLE 12______________________________________ Focal Length of Entire          Lens      LensLens  System   Spacing   SpacingNo.   :f.sub.0 (mm)          :1.sub.23 (mm)                    :1.sub.45 (mm)                            1.sub.23 /f.sub.0                                   1.sub.23 /1.sub.45______________________________________1     86.24    19.00     0.8223  0.2203 23.1063     82.13    18.890    0.5     0.2300 37.784     82.18    18.862    0.5     0.2295 37.7245     81.74    19.715    0.5     0.2412 39.436     84.20    18.997    0.5     0.2256 37.9947     82.08    12.697    0.5     0.1547 25.394______________________________________ 1.sub.23 : Space between faces of the first and second group constituent lenses. 1.sub.45 : Space between faces of the second and third group constituent lenses. 
    
     
                       TABLE 13______________________________________          Lens     LensLens  Spacing  Spacing  SpacingNo.   :L.sub.0 (mm)          :1.sub.78 (mm)                   :1.sub.910 (mm)                           1.sub.910 /L.sub.0                                  1.sub.78 /1.sub.910______________________________________1     81.05    12.20    30.906  0.3813 0.39473     76.57    12.692   27.836  0.3635 0.45604     76.36    12.631   27.696  0.3627 0.45615     73.84    9.8229   27.984  0.3790 0.35106     79.45    13.30    30.113  0.3790 0.44177     85.86    21.843   27.984  0.3259 0.7806______________________________________ 1.sub.78 : Space between faces of the third and fourth group constituent lenses. 1.sub.910 : Space between faces of the fourth and fifth group constituent lenses. L.sub.0 : Space between faces of the fluorescent face and the third group constituent lens.