# Patent

## Title
Optical image capturing system

## Abstract

An optical image capturing system includes, along the optical axis in order from an object side to an image side, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens. At least one lens among the first to the sixth lenses has positive refractive force. The seventh lens can have negative refractive force, wherein both surfaces thereof are aspheric, and at least one surface thereof has an inflection point. The lenses in the optical image capturing system which have refractive power include the first to the seventh lenses. The optical image capturing system can increase aperture value and improve the imaging quality for use in compact cameras.

## Background
BACKGROUND OF THE INVENTION
1. Technical Field
The present invention relates generally to an optical system, and more particularly to a compact optical image capturing system for an electronic device.
2. Description of Related Art
In recent years, with the rise of portable electronic devices having camera functionalities, the demand for an optical image capturing system is raised gradually. The image sensing device of the ordinary photographing camera is commonly selected from charge coupled device (CCD) or complementary metal-oxide semiconductor sensor (CMOS Sensor). In addition, as advanced semiconductor manufacturing technology enables the minimization of the pixel size of the image sensing device, the development of the optical image capturing system towards the field of high pixels. Therefore, the requirement for high imaging quality is rapidly raised.
The conventional optical system of the portable electronic device usually has five or six lenses. However, the optical system is asked to take pictures in a dark environment, in other words, the optical system is asked to have a large aperture. The conventional optical system provides high optical performance as required.
It is an important issue to increase the quantity of light entering the lens. In addition, the modern lens is also asked to have several characters, including high image quality.
BRIEF SUMMARY OF THE INVENTION
The aspect of embodiment of the present disclosure directs to an optical image capturing system and an optical image capturing lens which use combination of refractive powers, convex and concave surfaces of seven-piece optical lenses (the convex or concave surface in the disclosure denotes the geometrical shape of an image-side surface or an object-side surface of each lens on an optical axis) to increase the quantity of incoming light of the optical image capturing system, and to improve imaging quality for image formation, so as to be applied to minimized electronic products.
The term and its definition to the lens parameter in the embodiment of the present are shown as below for further reference.
The lens parameter related to a length or a height in the lens:
A maximum height for image formation of the optical image capturing system is denoted by HOI. A height of the optical image capturing system is denoted by HOS. A distance from the object-side surface of the first lens to the image-side surface of the seventh lens is denoted by InTL. A distance from the first lens to the second lens is denoted by IN12 (instance). A central thickness of the first lens of the optical image capturing system on the optical axis is denoted by TP1 (instance).
The lens parameter related to a material in the lens:
An Abbe number of the first lens in the optical image capturing system is denoted by NA1 (instance). A refractive index of the first lens is denoted by Nd1 (instance).
The lens parameter related to a view angle in the lens:
A view angle is denoted by AF. Half of the view angle is denoted by HAF. A major light angle is denoted by MRA.
The lens parameter related to exit/entrance pupil in the lens:
An entrance pupil diameter of the optical image capturing system is denoted by HEP. For any surface of any lens, a maximum effective half diameter (EHD) is a perpendicular distance between an optical axis and a crossing point on the surface where the incident light with a maximum viewing angle of the system passing the very edge of the entrance pupil. For example, the maximum effective half diameter of the object-side surface of the first lens is denoted by EHD11, the maximum effective half diameter of the image-side surface of the first lens is denoted by EHD12, the maximum effective half diameter of the object-side surface of the second lens is denoted by EHD21, the maximum effective half diameter of the image-side surface of the second lens is denoted by EHD22, and so on.
The lens parameter related to an arc length of the shape of a surface and a surface profile:
For any surface of any lens, a profile curve length of the maximum effective half diameter is, by definition, measured from a start point where the optical axis of the belonging optical image capturing system passes through the surface of the lens, along a surface profile of the lens, and finally to an end point of the maximum effective half diameter thereof. In other words, the curve length between the aforementioned start and end points is the profile curve length of the maximum effective half diameter, which is denoted by ARS. For example, the profile curve length of the maximum effective half diameter of the object-side surface of the first lens is denoted by ARS11, the profile curve length of the maximum effective half diameter of the image-side surface of the first lens is denoted by ARS12, the profile curve length of the maximum effective half diameter of the object-side surface of the second lens is denoted by ARS21, the profile curve length of the maximum effective half diameter of the image-side surface of the second lens is denoted by ARS22, and so on.
For any surface of any lens, a profile curve length of a half of the entrance pupil diameter (HEP) is, by definition, measured from a start point where the optical axis of the belonging optical image capturing system passes through the surface of the lens, along a surface profile of the lens, and finally to a coordinate point of a perpendicular distance where is a half of the entrance pupil diameter away from the optical axis. In other words, the curve length between the aforementioned stat point and the coordinate point is the profile curve length of a half of the entrance pupil diameter (HEP), and is denoted by ARE. For example, the profile curve length of a half of the entrance pupil diameter (HEP) of the object-side surface of the first lens is denoted by ARE11, the profile curve length of a half of the entrance pupil diameter (HEP) of the image-side surface of the first lens is denoted by ARE12, the profile curve length of a half of the entrance pupil diameter (HEP) of the object-side surface of the second lens is denoted by ARE21, the profile curve length of a half of the entrance pupil diameter (HEP) of the image-side surface of the second lens is denoted by ARE22, and so on.
The lens parameter related to a depth of the lens shape:
A distance in parallel with the optical axis from a point where the optical axis passes through to an end point of the maximum effective semi diameter on the object-side surface of the seventh lens is denoted by InRS71 (the depth of the maximum effective semi diameter). A distance in parallel with the optical axis from a point where the optical axis passes through to an end point of the maximum effective semi diameter on the image-side surface of the seventh lens is denoted by InRS72 (the depth of the maximum effective semi diameter). The depth of the maximum effective semi diameter (sinkage) on the object-side surface or the image-side surface of any other lens is denoted in the same manner.
The lens parameter related to the lens shape:
A critical point C is a tangent point on a surface of a specific lens, and the tangent point is tangent to a plane perpendicular to the optical axis and the tangent point cannot be a crossover point on the optical axis. Following the above description, a distance perpendicular to the optical axis between a critical point C51 on the object-side surface of the fifth lens and the optical axis is HVT51 (instance), and a distance perpendicular to the optical axis between a critical point C52 on the image-side surface of the fifth lens and the optical axis is HVT52 (instance). A distance perpendicular to the optical axis between a critical point C61 on the object-side surface of the sixth lens and the optical axis is HVT61 (instance), and a distance perpendicular to the optical axis between a critical point C62 on the image-side surface of the sixth lens and the optical axis is HVT62 (instance). A distance perpendicular to the optical axis between a critical point on the object-side or image-side surface of other lenses, such as the seventh lens, and the optical axis is denoted in the same manner.
The object-side surface of the seventh lens has one inflection point IF711 which is nearest to the optical axis, and the sinkage value of the inflection point IF711 is denoted by SGI711 (instance). A distance perpendicular to the optical axis between the inflection point IF711 and the optical axis is HIF711 (instance). The image-side surface of the seventh lens has one inflection point IF721 which is nearest to the optical axis, and the sinkage value of the inflection point IF721 is denoted by SGI721 (instance). A distance perpendicular to the optical axis between the inflection point IF721 and the optical axis is HIF721 (instance).
The object-side surface of the seventh lens has one inflection point IF712 which is the second nearest to the optical axis, and the sinkage value of the inflection point IF712 is denoted by SGI712 (instance). A distance perpendicular to the optical axis between the inflection point IF712 and the optical axis is HIF712 (instance). The image-side surface of the seventh lens has one inflection point IF722 which is the second nearest to the optical axis, and the sinkage value of the inflection point IF722 is denoted by SGI722 (instance). A distance perpendicular to the optical axis between the inflection point IF722 and the optical axis is HIF722 (instance).
The object-side surface of the seventh lens has one inflection point IF713 which is the third nearest to the optical axis, and the sinkage value of the inflection point IF713 is denoted by SGI713 (instance). A distance perpendicular to the optical axis between the inflection point IF713 and the optical axis is HIF713 (instance). The image-side surface of the seventh lens has one inflection point IF723 which is the third nearest to the optical axis, and the sinkage value of the inflection point IF723 is denoted by SGI723 (instance). A distance perpendicular to the optical axis between the inflection point IF723 and the optical axis is HIF723 (instance).
The object-side surface of the seventh lens has one inflection point IF714 which is the fourth nearest to the optical axis, and the sinkage value of the inflection point IF714 is denoted by SGI714 (instance). A distance perpendicular to the optical axis between the inflection point IF714 and the optical axis is HIF714 (instance). The image-side surface of the seventh lens has one inflection point IF724 which is the fourth nearest to the optical axis, and the sinkage value of the inflection point IF724 is denoted by SGI724 (instance). A distance perpendicular to the optical axis between the inflection point IF724 and the optical axis is HIF724 (instance).
An inflection point, a distance perpendicular to the optical axis between the inflection point and the optical axis, and a sinkage value thereof on the object-side surface or image-side surface of other lenses is denoted in the same manner.
The lens parameter related to an aberration:
Optical distortion for image formation in the optical image capturing system is denoted by ODT. TV distortion for image formation in the optical image capturing system is denoted by TDT. Further, the range of the aberration offset for the view of image formation may be limited to 50%-100% field. An offset of the spherical aberration is denoted by DFS. An offset of the coma aberration is denoted by DFC.
Transverse aberration on an edge of an aperture is denoted by STA, which stands for STOP transverse aberration, and is used to evaluate the performance of one specific optical image capturing system. The transverse aberration of light in any field of view can be calculated with a tangential fan or a sagittal fan. More specifically, the transverse aberration caused when the longest operation wavelength (e.g., 650 nm) and the shortest operation wavelength (e.g., 470 nm) pass through the edge of the aperture can be used as the reference for evaluating performance. The coordinate directions of the aforementioned tangential fan can be further divided into a positive direction (upper light) and a negative direction (lower light). The longest operation wavelength which passes through the edge of the aperture has an imaging position on the image plane in a particular field of view, and the reference wavelength of the mail light (e.g., 555 nm) has another imaging position on the image plane in the same field of view. The transverse aberration caused when the longest operation wavelength passes through the edge of the aperture is defined as a distance between these two imaging positions. Similarly, the shortest operation wavelength which passes through the edge of the aperture has an imaging position on the image plane in a particular field of view, and the transverse aberration caused when the shortest operation wavelength passes through the edge of the aperture is defined as a distance between the imaging position of the shortest operation wavelength and the imaging position of the reference wavelength. The performance of the optical image capturing system can be considered excellent if the transverse aberrations of the shortest and the longest operation wavelength which pass through the edge of the aperture and image on the image plane in 0.7 field of view (i.e., 0.7 times the height for image formation HOI) are both less than 100 μm. Furthermore, for a stricter evaluation, the performance cannot be considered excellent unless the transverse aberrations of the shortest and the longest operation wavelength which pass through the edge of the aperture and image on the image plane in 0.7 field of view are both less than 80 μm.
The optical image capturing system has a maximum image height HOI on the image plane vertical to the optical axis. A transverse aberration at 0.7 HOI in the positive direction of the tangential fan after the longest operation wavelength of visible light passing through the edge of the aperture is denoted by PLTA; a transverse aberration at 0.7 HOI in the positive direction of the tangential fan after the shortest operation wavelength of visible light passing through the edge of the aperture is denoted by PSTA; a transverse aberration at 0.7 HOI in the negative direction of the tangential fan after the longest operation wavelength of visible light passing through the edge of the aperture is denoted by NLTA; a transverse aberration at 0.7 HOI in the negative direction of the tangential fan after the shortest operation wavelength of visible light passing through the edge of the aperture is denoted by NSTA; a transverse aberration at 0.7 HOI of the sagittal fan after the longest operation wavelength of visible light passing through the edge of the aperture is denoted by SLTA; a transverse aberration at 0.7 HOI of the sagittal fan after the shortest operation wavelength of visible light passing through the edge of the aperture is denoted by SSTA.
The present invention provides an optical image capturing system capable of focusing for both visible light and infrared light (i.e., dual mode) with certain performance, in which the seventh lens is provided with an inflection point at the object-side surface or at the image-side surface to adjust the incident angle of each view field and modify the ODT and the TDT. In addition, the surfaces of the seventh lens are capable of modifying the optical path to improve the imaging quality.
The optical image capturing system of the present invention includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, and an image plane in order along an optical axis from an object side to an image side. The first lens has refractive power. The optical image capturing system satisfies:

1.2≦f/HEP≦10.0; 0<InTL/HOS<0.9; and 0.9≦2(ARE/HEP)≦1.5;

where f1, f2, f3, f4, f5, f6, and f7 are respectively the focal lengths of the first lens to the seventh lens; f is a focal length of the optical image capturing system; HEP is an entrance pupil diameter of the optical image capturing system; HOS is a distance in parallel with the optical axis between an object-side surface, which face the object side, of the first lens and the image plane; InTL is a distance between the object-side surface of the first lens and the image-side surface of the seventh lens on the optical axis; ARE is a profile curve length measured from a start point where the optical axis of the belonging optical image capturing system passes through the surface of the lens, along a surface profile of the lens, and finally to a coordinate point of a perpendicular distance where is a half of the entrance pupil diameter away from the optical axis.
The present invention further provides an optical image capturing system, including a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, and an image plane in order along an optical axis from an object side to an image side. The first lens has positive refractive power, wherein the object-side surface thereof can be convex near the optical axis. The second lens has refractive power. The third lens has refractive power. The fourth lens has refractive power. The fifth lens has refractive power. The sixth lens has refractive power. The seventh lens has negative refractive power, wherein the object-side surface and the image-side surface thereof are both aspheric surfaces. Each of at least two lenses among the first lens to the seventh lens has at least an inflection point on at least a surface thereof. At least one lens between the second lens and the seventh lens has positive refractive power. The optical image capturing system satisfies:

1.2≦f/HEP≦10.0; 0<InTL/HOS<0.9; and 0.9≦2(ARE/HEP)≦1.5;

where f1, f2, f3, f4, f5, f6, and f7 are respectively the focal lengths of the first lens to the seventh lens; f is a focal length of the optical image capturing system; HEP is an entrance pupil diameter of the optical image capturing system; HOS is a distance in parallel with the optical axis between an object-side surface, which face the object side, of the first lens and the image plane; InTL is a distance between the object-side surface of the first lens and the image-side surface of the seventh lens on the optical axis; ARE is a profile curve length measured from a start point where the optical axis of the belonging optical image capturing system passes through the surface of the lens, along a surface profile of the lens, and finally to a coordinate point of a perpendicular distance where is a half of the entrance pupil diameter away from the optical axis.
The present invention further provides an optical image capturing system, including a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, and an image plane, in order along an optical axis from an object side to an image side. At least one surface of the object-side surface and the image-side surface of the seventh lens has at least one inflection point. The number of the lenses having refractive power in the optical image capturing system is seven. Each of at least two lenses among the first to the sixth lenses has at least an inflection point. The first lens has positive refractive power, and the second lens has refractive power. The third lens has refractive power. The fourth lens has refractive power. The fifth lens has refractive power. The sixth lens has refractive power, wherein the object-side surface and the image-side surface thereof are both aspheric surfaces. The seventh lens has negative refractive power, wherein the object-side surface and the image-side surface thereof are both aspheric surfaces. The optical image capturing system satisfies:

1.2≦f/HEP≦3.5; 0<InTL/HOS<0.9; and 0.9≦2(ARE/HEP)≦1.5;

where f1, f2, f3, f4, f5, f6, and f7 are respectively the focal lengths of the first lens to the seventh lens; f is a focal length of the optical image capturing system; HEP is an entrance pupil diameter of the optical image capturing system; HOS is a distance in parallel with the optical axis between an object-side surface, which face the object side, of the first lens and the image plane; InTL is a distance between the object-side surface of the first lens and the image-side surface of the seventh lens on the optical axis; ARE is a profile curve length measured from a start point where the optical axis of the belonging optical image capturing system passes through the surface of the lens, along a surface profile of the lens, and finally to a coordinate point of a perpendicular distance where is a half of the entrance pupil diameter away from the optical axis.
For any surface of any lens, the profile curve length within the effective half diameter affects the ability of the surface to correct aberration and differences between optical paths of light in different fields of view. With longer profile curve length, the ability to correct aberration is better. However, the difficulty of manufacturing increases as well. Therefore, the profile curve length within the effective half diameter of any surface of any lens has to be controlled. The ratio between the profile curve length (ARS) within the effective half diameter of one surface and the thickness (TP) of the lens, which the surface belonged to, on the optical axis (i.e., ARS/TP) has to be particularly controlled. For example, the profile curve length of the maximum effective half diameter of the object-side surface of the first lens is denoted by ARS11, the thickness of the first lens on the optical axis is TP1, and the ratio between these two parameters is ARS11/TP1; the profile curve length of the maximum effective half diameter of the image-side surface of the first lens is denoted by ARS12, and the ratio between ARS12 and TP1 is ARS12/TP1. The profile curve length of the maximum effective half diameter of the object-side surface of the second lens is denoted by ARS21, the thickness of the second lens on the optical axis is TP2, and the ratio between these two parameters is ARS21/TP2; the profile curve length of the maximum effective half diameter of the image-side surface of the second lens is denoted by ARS22, and the ratio between ARS22 and TP2 is ARS22/TP2. For any surface of other lenses in the optical image capturing system, the ratio between the profile curve length of the maximum effective half diameter thereof and the thickness of the lens which the surface belonged to is denoted in the same manner.
For any surface of any lens, the profile curve length within a half of the entrance pupil diameter (HEP) affects the ability of the surface to correct aberration and differences between optical paths of light in different fields of view. With longer profile curve length, the ability to correct aberration is better. However, the difficulty of manufacturing increases as well. Therefore, the profile curve length within a half of the entrance pupil diameter (HEP) of any surface of any lens has to be controlled. The ratio between the profile curve length (ARE) within a half of the entrance pupil diameter (HEP) of one surface and the thickness (TP) of the lens, which the surface belonged to, on the optical axis (i.e., ARE/TP) has to be particularly controlled. For example, the profile curve length of a half of the entrance pupil diameter (HEP) of the object-side surface of the first lens is denoted by ARE11, the thickness of the first lens on the optical axis is TP1, and the ratio between these two parameters is ARE11/TP1; the profile curve length of a half of the entrance pupil diameter (HEP) of the image-side surface of the first lens is denoted by ARE12, and the ratio between ARE12 and TP1 is ARE12/TP1. The profile curve length of a half of the entrance pupil diameter (HEP) of the object-side surface of the second lens is denoted by ARE21, the thickness of the second lens on the optical axis is TP2, and the ratio between these two parameters is ARE21/TP2; the profile curve length of a half of the entrance pupil diameter (HEP) of the image-side surface of the second lens is denoted by ARE22, and the ratio between ARE22 and TP2 is ARE22/TP2. For any surface of other lenses in the optical image capturing system, the ratio between the profile curve length of a half of the entrance pupil diameter (HEP) thereof and the thickness of the lens which the surface belonged to is denoted in the same manner.
In an embodiment, a height of the optical image capturing system (HOS) can be reduced if |f1|>|f7|.
In an embodiment, when |f2|+|f3|+|f4|+|f5|+|f6| and |f1|+|f7| of the lenses satisfy the aforementioned conditions, at least one lens among the second to the sixth lenses could have weak positive refractive power or weak negative refractive power. Herein the weak refractive power means the absolute value of the focal length of one specific lens is greater than 10. When at least one lens among the second to the sixth lenses has weak positive refractive power, it may share the positive refractive power of the first lens, and on the contrary, when at least one lens among the second to the sixth lenses has weak negative refractive power, it may fine turn and correct the aberration of the system.
In an embodiment, the seventh lens could have negative refractive power, and an image-side surface thereof is concave, it may reduce back focal length and size. Besides, the seventh lens can have at least an inflection point on at least a surface thereof, which may reduce an incident angle of the light of an off-axis field of view and correct the aberration of the off-axis field of view.



BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS
The present invention will be best understood by referring to the following detailed description of some illustrative embodiments in conjunction with the accompanying drawings, in which
FIG. 1A is a schematic diagram of a first embodiment of the present invention;
FIG. 1B shows curve diagrams of longitudinal spherical aberration, astigmatic field, and optical distortion of the optical image capturing system in the order from left to right of the first embodiment of the present application;
FIG. 1C shows a tangential fan and a sagittal fan of the optical image capturing system of the first embodiment of the present application, and a transverse aberration diagram at 0.7 field of view when a longest operation wavelength and a shortest operation wavelength pass through an edge of an aperture;
FIG. 2A is a schematic diagram of a second embodiment of the present invention;
FIG. 2B shows curve diagrams of longitudinal spherical aberration, astigmatic field, and optical distortion of the optical image capturing system in the order from left to right of the second embodiment of the present application;
FIG. 2C shows a tangential fan and a sagittal fan of the optical image capturing system of the second embodiment of the present application, and a transverse aberration diagram at 0.7 field of view when a longest operation wavelength and a shortest operation wavelength pass through an edge of an aperture;
FIG. 3A is a schematic diagram of a third embodiment of the present invention;
FIG. 3B shows curve diagrams of longitudinal spherical aberration, astigmatic field, and optical distortion of the optical image capturing system in the order from left to right of the third embodiment of the present application;
FIG. 3C shows a tangential fan and a sagittal fan of the optical image capturing system of the third embodiment of the present application, and a transverse aberration diagram at 0.7 field of view when a longest operation wavelength and a shortest operation wavelength pass through an edge of an aperture;
FIG. 4A is a schematic diagram of a fourth embodiment of the present invention;
FIG. 4B shows curve diagrams of longitudinal spherical aberration, astigmatic field, and optical distortion of the optical image capturing system in the order from left to right of the fourth embodiment of the present application;
FIG. 4C shows a tangential fan and a sagittal fan of the optical image capturing system of the fourth embodiment of the present application, and a transverse aberration diagram at 0.7 field of view when a longest operation wavelength and a shortest operation wavelength pass through an edge of an aperture;
FIG. 5A is a schematic diagram of a fifth embodiment of the present invention;
FIG. 5B shows curve diagrams of longitudinal spherical aberration, astigmatic field, and optical distortion of the optical image capturing system in the order from left to right of the fifth embodiment of the present application;
FIG. 5C shows a tangential fan and a sagittal fan of the optical image capturing system of the fifth embodiment of the present application, and a transverse aberration diagram at 0.7 field of view when a longest operation wavelength and a shortest operation wavelength pass through an edge of an aperture;
FIG. 6A is a schematic diagram of a sixth embodiment of the present invention;
FIG. 6B shows curve diagrams of longitudinal spherical aberration, astigmatic field, and optical distortion of the optical image capturing system in the order from left to right of the sixth embodiment of the present application; and
FIG. 6C shows a tangential fan and a sagittal fan of the optical image capturing system of the sixth embodiment of the present application, and a transverse aberration diagram at 0.7 field of view when a longest operation wavelength and a shortest operation wavelength pass through an edge of an aperture.



DETAILED DESCRIPTION OF THE INVENTION
An optical image capturing system of the present invention includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, and an image plane from an object side to an image side. The optical image capturing system further is provided with an image sensor at an image plane, wherein the image heights of the following embodiments are all around 3.91 mm.
The optical image capturing system can work in three wavelengths, including 486.1 nm, 587.5 nm, and 656.2 nm, wherein 587.5 nm is the main reference wavelength and is the reference wavelength for obtaining the technical characters. The optical image capturing system can also work in five wavelengths, including 470 nm, 510 nm, 555 nm, 610 nm, and 650 nm wherein 555 nm is the main reference wavelength, and is the reference wavelength for obtaining the technical characters.
The optical image capturing system of the present invention satisfies 0.5≦ΣPPR/|ΣNPR|≦15, and a preferable range is 1≦ΣPPR/|NPR|≦3.0, where PPR is a ratio of the focal length f of the optical image capturing system to a focal length fp of each of lenses with positive refractive power; NPR is a ratio of the focal length f of the optical image capturing system to a focal length fn of each of lenses with negative refractive power; ΣPPR is a sum of the PPRs of each positive lens; and ΣNPR is a sum of the NPRs of each negative lens. It is helpful for control of an entire refractive power and an entire length of the optical image capturing system.
The image sensor is provided on the image plane. The optical image capturing system of the present invention satisfies HOS/HOI≦10; and 0.5≦HOS/f≦10, and a preferable range is 1≦HOS/HOI≦5; and 1≦HOS/f≦7, where HOI is a half of a diagonal of an effective sensing area of the image sensor, i.e., the maximum image height, and HOS is a height of the optical image capturing system, i.e. a distance on the optical axis between the object-side surface of the first lens and the image plane. It is helpful for reduction of the size of the system for used in compact cameras.
The optical image capturing system of the present invention further is provided with an aperture to increase image quality.
In the optical image capturing system of the present invention, the aperture could be a front aperture or a middle aperture, wherein the front aperture is provided between the object and the first lens, and the middle is provided between the first lens and the image plane. The front aperture provides a long distance between an exit pupil of the system and the image plane, which allows more elements to be installed. The middle could enlarge a view angle of view of the system and increase the efficiency of the image sensor. The optical image capturing system satisfies 0.2≦InS/HOS≦1.1, where InS is a distance between the aperture and the image-side surface of the sixth lens. It is helpful for size reduction and wide angle.
The optical image capturing system of the present invention satisfies 0.1≦ΣTP/InTL≦0.9, where InTL is a distance between the object-side surface of the first lens and the image-side surface of the seventh lens, and ΣTP is a sum of central thicknesses of the lenses on the optical axis. It is helpful for the contrast of image and yield rate of manufacture and provides a suitable back focal length for installation of other elements.
The optical image capturing system of the present invention satisfies 0.001≦Σ|R1/R2|≦20, and a preferable range is 0.01≦|R1/R2|<10, where R1 is a radius of curvature of the object-side surface of the first lens, and R2 is a radius of curvature of the image-side surface of the first lens. It provides the first lens with a suitable positive refractive power to reduce the increase rate of the spherical aberration.
The optical image capturing system of the present invention satisfies −7<(R13−R14)/(R13+R14)<50, where R13 is a radius of curvature of the object-side surface of the seventh lens, and R14 is a radius of curvature of the image-side surface of the seventh lens. It may modify the astigmatic field curvature.
The optical image capturing system of the present invention satisfies IN12/f≦3.0, where IN12 is a distance on the optical axis between the first lens and the second lens. It may correct chromatic aberration and improve the performance.
The optical image capturing system of the present invention satisfies IN67/f≦0.8, where IN67 is a distance on the optical axis between the sixth lens and the seventh lens. It may correct chromatic aberration and improve the performance
The optical image capturing system of the present invention satisfies 0.1≦(TP1+IN12)/TP2≦10, where TP1 is a central thickness of the first lens on the optical axis, and TP2 is a central thickness of the second lens on the optical axis. It may control the sensitivity of manufacture of the system and improve the performance.
The optical image capturing system of the present invention satisfies 0.1≦(TP7+IN67)/TP6≦10, where TP6 is a central thickness of the sixth lens on the optical axis, TP7 is a central thickness of the seventh lens on the optical axis, and IN67 is a distance between the sixth lens and the seventh lens. It may control the sensitivity of manufacture of the system and improve the performance.
The optical image capturing system of the present invention satisfies 0.1≦TP4/(IN34+TP4+IN45)<1, where TP3 is a central thickness of the third lens on the optical axis, TP4 is a central thickness of the fourth lens on the optical axis, TP5 is a central thickness of the fifth lens on the optical axis, IN34 is a distance on the optical axis between the third lens and the fourth lens, IN45 is a distance on the optical axis between the fourth lens and the fifth lens, and InTL is a distance between the object-side surface of the first lens and the image-side surface of the seventh lens. It may fine tune and correct the aberration of the incident rays layer by layer, and reduce the height of the system.
The optical image capturing system satisfies 0 mm≦HVT71≦3 mm; 0 mm<HVT72≦6 mm; 0≦HVT71/HVT72; 0 mm≦|SGC71|≦0.5 mm; 0 mm<|SGC72|≦2 mm; and 0≦|SGC72|/(|SGC72|+TP7)≦0.9, where HVT71 a distance perpendicular to the optical axis between the critical point C71 on the object-side surface of the seventh lens and the optical axis; HVT72 a distance perpendicular to the optical axis between the critical point C72 on the image-side surface of the seventh lens and the optical axis; SGC71 is a distance in parallel with the optical axis between an point on the object-side surface of the seventh lens where the optical axis passes through and the critical point C71; SGC72 is a distance in parallel with the optical axis between an point on the image-side surface of the seventh lens where the optical axis passes through and the critical point C72. It is helpful to correct the off-axis view field aberration.
The optical image capturing system satisfies 0.2≦HVT72/HOI≦0.9, and preferably satisfies 0.3≦HVT72/HOI≦0.8. It may help to correct the peripheral aberration.
The optical image capturing system satisfies 0≦HVT72/HOS≦0.5, and preferably satisfies 0.2≦HVT72/HOS≦0.45. It may help to correct the peripheral aberration.
The optical image capturing system of the present invention satisfies 0<SGI711/(SGI711+TP7)≦0.9; 0<SGI721/(SGI721+TP7)≦0.9, and it is preferable to satisfy 0.1≦SGI711/(SGI711+TP7)≦0.6; 0.1≦SGI721/(SGI721+TP7)≦0.6, where SGI711 is a displacement in parallel with the optical axis, from a point on the object-side surface of the seventh lens, through which the optical axis passes, to the inflection point on the object-side surface, which is the closest to the optical axis, and SGI721 is a displacement in parallel with the optical axis, from a point on the image-side surface of the seventh lens, through which the optical axis passes, to the inflection point on the image-side surface, which is the closest to the optical axis.
The optical image capturing system of the present invention satisfies 0<SGI712/(SGI712+TP7)≦0.9; 0<SGI722/(SGI722+TP7)≦0.9, and it is preferable to satisfy 0.1≦SGI712/(SGI712+TP7)≦0.6; 0.1≦SGI722/(SGI722+TP7)≦0.6, where SGI712 is a displacement in parallel with the optical axis, from a point on the object-side surface of the seventh lens, through which the optical axis passes, to the inflection point on the object-side surface, which is the second closest to the optical axis, and SGI722 is a displacement in parallel with the optical axis, from a point on the image-side surface of the seventh lens, through which the optical axis passes, to the inflection point on the image-side surface, which is the second closest to the optical axis.
The optical image capturing system of the present invention satisfies 0.001 mm≦|HIF711|≦5 mm; 0.001 mm≦|HIF721|≦5 mm, and it is preferable to satisfy 0.1 mm≦|HIF711|≦3.5 mm; 1.5 mm≦|HIF721|≦3.5 mm, where HIF711 is a distance perpendicular to the optical axis between the inflection point on the object-side surface of the seventh lens, which is the closest to the optical axis, and the optical axis; HIF721 is a distance perpendicular to the optical axis between the inflection point on the image-side surface of the seventh lens, which is the closest to the optical axis, and the optical axis.
The optical image capturing system of the present invention satisfies 0.001 mm≦|HIF712|≦5 mm; 0.001 mm≦|HIF722|≦5 mm, and it is preferable to satisfy 0.1 mm≦|HIF722|≦3.5 mm; 0.1 mm≦|HIF712|≦3.5 mm, where HIF712 is a distance perpendicular to the optical axis between the inflection point on the object-side surface of the seventh lens, which is the second closest to the optical axis, and the optical axis; HIF722 is a distance perpendicular to the optical axis between the inflection point on the image-side surface of the seventh lens, which is the second closest to the optical axis, and the optical axis.
The optical image capturing system of the present invention satisfies 0.001 mm≦|HIF713|≦5 mm; 0.001 mm≦|HIF723≦5 mm, and it is preferable to satisfy 0.1 mm≦|HIF723|≦3.5 mm; 0.1 mm≦|HIF713|≦3.5 mm, where HIF713 is a distance perpendicular to the optical axis between the inflection point on the object-side surface of the seventh lens, which is the third closest to the optical axis, and the optical axis; HIF723 is a distance perpendicular to the optical axis between the inflection point on the image-side surface of the seventh lens, which is the third closest to the optical axis, and the optical axis.
The optical image capturing system of the present invention satisfies 0.001 mm≦|HIF714|≦5 mm; 0.001 mm≦|HIF724|≦5 mm, and it is preferable to satisfy 0.1 mm≦|HIF724|≦3.5 mm; 0.1 mm≦|HIF714|≦3.5 mm, where HIF714 is a distance perpendicular to the optical axis between the inflection point on the object-side surface of the seventh lens, which is the fourth closest to the optical axis, and the optical axis; HIF724 is a distance perpendicular to the optical axis between the inflection point on the image-side surface of the seventh lens, which is the fourth closest to the optical axis, and the optical axis.
In an embodiment, the lenses of high Abbe number and the lenses of low Abbe number are arranged in an interlaced arrangement that could be helpful for correction of aberration of the system.
An equation of aspheric surface is

z=ch2/[1+[1(k+1)c2h2]0.5]+A4h4+A6h6+A8h8+A10h10+A12h12+A14h14+A16h16+A18h18+A20h20+ . . .   (1)

where z is a depression of the aspheric surface; k is conic constant; c is reciprocal of the radius of curvature; and A4, A6, A8, A10, A12, A14, A16, A18, and A20 are high-order aspheric coefficients.
In the optical image capturing system, the lenses could be made of plastic or glass. The plastic lenses may reduce the weight and lower the cost of the system, and the glass lenses may control the thermal effect and enlarge the space for arrangement of the refractive power of the system. In addition, the opposite surfaces (object-side surface and image-side surface) of the first to the seventh lenses could be aspheric that can obtain more control parameters to reduce aberration. The number of aspheric glass lenses could be less than the conventional spherical glass lenses, which is helpful for reduction of the height of the system.
When the lens has a convex surface, which means that the surface is convex around a position, through which the optical axis passes, and when the lens has a concave surface, which means that the surface is concave around a position, through which the optical axis passes.
The optical image capturing system of the present invention could be applied in a dynamic focusing optical system. It is superior in the correction of aberration and high imaging quality so that it could be allied in lots of fields.
The optical image capturing system of the present invention could further include a driving module to meet different demands, wherein the driving module can be coupled with the lenses to move the lenses. The driving module can be a voice coil motor (VCM), which is used to move the lens for focusing, or can be an optical image stabilization (OIS) component, which is used to lower the possibility of having the problem of image blurring which is caused by subtle movements of the lens while shooting.
To meet different requirements, at least one lens among the first lens to the seventh lens of the optical image capturing system of the present invention can be a light filter, which filters out light of wavelength shorter than 500 nm. Such effect can be achieved by coating on at least one surface of the lens, or by using materials capable of filtering out short waves to make the lens.
We provide several embodiments in conjunction with the accompanying drawings for the best understanding, which are:
First Embodiment
As shown in FIG. 1A and FIG. 1B, an optical image capturing system 10 of the first embodiment of the present invention includes, along an optical axis from an object side to an image side, a first lens 110, an aperture 100, a second lens 120, a third lens 130, a fourth lens 140, a fifth lens 150, a sixth lens 160, a seventh lens 170, an infrared rays filter 180, an image plane 190, and an image sensor 192. FIG. 1C shows a tangential fan and a sagittal fan of the optical image capturing system 10 of the first embodiment of the present application, and a transverse aberration diagram at 0.7 field of view when a longest operation wavelength and a shortest operation wavelength pass through an edge of the aperture 100.
The first lens 110 has positive refractive power and is made of plastic. An object-side surface 112 thereof, which faces the object side, is a convex aspheric surface, and an image-side surface 114 thereof, which faces the image side, is a concave aspheric surface. A profile curve length of the maximum effective half diameter of an object-side surface of the first lens 110 is denoted by ARS11, and a profile curve length of the maximum effective half diameter of the image-side surface of the first lens 110 is denoted by ARS12. A profile curve length of a half of an entrance pupil diameter (HEP) of the object-side surface of the first lens 110 is denoted by ARE11, and a profile curve length of a half of the entrance pupil diameter (HEP) of the image-side surface of the first lens 110 is denoted by ARE12. A thickness of the first lens 110 on the optical axis is TP1.
The second lens 120 has negative refractive power and is made of plastic. An object-side surface 122 thereof, which faces the object side, is a convex aspheric surface, and an image-side surface 124 thereof, which faces the image side, is a concave aspheric surface. The image-side surface 124 has an inflection point. A profile curve length of the maximum effective half diameter of an object-side surface of the second lens 120 is denoted by ARS21, and a profile curve length of the maximum effective half diameter of the image-side surface of the second lens 120 is denoted by ARS22. A profile curve length of a half of an entrance pupil diameter (HEP) of the object-side surface of the second lens 120 is denoted by ARE21, and a profile curve length of a half of the entrance pupil diameter (HEP) of the image-side surface of the second lens 120 is denoted by ARE22. A thickness of the second lens 120 on the optical axis is TP2.
The second lens 120 satisfies SGI221=0.14138 mm; TP2=0.23 mm; |SGI221|/(|SGI221|+TP2)=0.38069, where a displacement in parallel with the optical axis from a point on the object-side surface of the second lens, through which the optical axis passes, to the inflection point on the image-side surface, which is the closest to the optical axis is denoted by SGI211, and a displacement in parallel with the optical axis from a point on the image-side surface of the second lens, through which the optical axis passes, to the inflection point on the image-side surface, which is the closest to the optical axis is denoted by SGI221.
The second lens 120 satisfies HIF221=1.15809 mm; HIF221/HOI=0.29596, where a displacement perpendicular to the optical axis from a point on the object-side surface of the second lens, through which the optical axis passes, to the inflection point, which is the closest to the optical axis is denoted by HIF211, and a displacement perpendicular to the optical axis from a point on the image-side surface of the second lens, through which the optical axis passes, to the inflection point, which is the closest to the optical axis is denoted by HIF221.
The third lens 130 has negative refractive power and is made of plastic. An object-side surface 132, which faces the object side, is a concave aspheric surface, and an image-side surface 134, which faces the image side, is a convex aspheric surface. The image-side surface 134 has two inflection points. A profile curve length of the maximum effective half diameter of an object-side surface of the third lens 130 is denoted by ARS31, and a profile curve length of the maximum effective half diameter of the image-side surface of the third lens 130 is denoted by ARS32. A profile curve length of a half of an entrance pupil diameter (HEP) of the object-side surface of the third lens 130 is denoted by ARE31, and a profile curve length of a half of the entrance pupil diameter (HEP) of the image-side surface of the third lens 130 is denoted by ARE32. A thickness of the third lens 130 on the optical axis is TP3.
The third lens 130 satisfies SGI321=0.00124 mm; |SGI321|/(|SGI321|+TP3)=0.00536, where SGI311 is a displacement in parallel with the optical axis, from a point on the object-side surface of the third lens, through which the optical axis passes, to the inflection point on the object-side surface, which is the closest to the optical axis, and SGI321 is a displacement in parallel with the optical axis, from a point on the image-side surface of the third lens, through which the optical axis passes, to the inflection point on the image-side surface, which is the closest to the optical axis.
The third lens 130 satisfies SGI322=0.00103 mm; |SGI322|/(|SGI322|+TP3)=0.00445, where SGI312 is a displacement in parallel with the optical axis, from a point on the object-side surface of the third lens, through which the optical axis passes, to the inflection point on the object-side surface, which is the second closest to the optical axis, and SGI322 is a displacement in parallel with the optical axis, from a point on the image-side surface of the third lens, through which the optical axis passes, to the inflection point on the object-side surface, which is the second closest to the optical axis.
The third lens 130 further satisfies HIF321=0.37528 mm; HIF321/HOI=0.09591, where HIF311 is a distance perpendicular to the optical axis between the inflection point on the object-side surface of the third lens, which is the closest to the optical axis, and the optical axis; HIF321 is a distance perpendicular to the optical axis between the inflection point on the image-side surface of the third lens, which is the closest to the optical axis, and the optical axis.
The third lens 130 further satisfies HIF322=0.92547 mm; HIF322/HOI=0.23651, HIF312 is a distance perpendicular to the optical axis between the inflection point on the object-side surface of the third lens, which is the second closest to the optical axis, and the optical axis; HIF322 is a distance perpendicular to the optical axis between the inflection point on the image-side surface of the third lens, which is the second closest to the optical axis, and the optical axis.
The fourth lens 140 has positive refractive power and is made of plastic. An object-side surface 142, which faces the object side, is a convex aspheric surface, and an image-side surface 144, which faces the image side, is a convex aspheric surface. The object-side surface 142 has two inflection points. A profile curve length of the maximum effective half diameter of an object-side surface of the fourth lens 140 is denoted by ARS41, and a profile curve length of the maximum effective half diameter of the image-side surface of the fourth lens 140 is denoted by ARS42. A profile curve length of a half of an entrance pupil diameter (HEP) of the object-side surface of the fourth lens 140 is denoted by ARE41, and a profile curve length of a half of the entrance pupil diameter (HEP) of the image-side surface of the fourth lens 140 is denoted by ARE42. A thickness of the fourth lens 140 on the optical axis is TP4.
The fourth lens 140 satisfies SGI411=0.01264 mm; |SGI411|/(|SGI411|+TP4)=0.02215, where SGI411 is a displacement in parallel with the optical axis, from a point on the object-side surface of the fourth lens, through which the optical axis passes, to the inflection point on the object-side surface, which is the closest to the optical axis, and SGI421 is a displacement in parallel with the optical axis, from a point on the image-side surface of the fourth lens, through which the optical axis passes, to the inflection point on the image-side surface, which is the closest to the optical axis.
The fourth lens 140 satisfies SGI412=0.02343 mm; |SGI412|/(|SGI412|+TP4)=0.04032, where SGI412 is a displacement in parallel with the optical axis, from a point on the object-side surface of the fourth lens, through which the optical axis passes, to the inflection point on the object-side surface, which is the second closest to the optical axis, and SGI422 is a displacement in parallel with the optical axis, from a point on the image-side surface of the fourth lens, through which the optical axis passes, to the inflection point on the object-side surface, which is the second closest to the optical axis.
The fourth lens 140 further satisfies HIF411=0.63515 mm; HIF411/HOI=0.16232, where HIF411 is a distance perpendicular to the optical axis between the inflection point on the object-side surface of the fourth lens, which is the closest to the optical axis, and the optical axis; HIF421 is a distance perpendicular to the optical axis between the inflection point on the image-side surface of the fourth lens, which is the closest to the optical axis, and the optical axis.
The fourth lens 140 further satisfies HIF412=1.33003 mm; HIF412/HOI=0.33990, where HIF412 is a distance perpendicular to the optical axis between the inflection point on the object-side surface of the fourth lens, which is the second closest to the optical axis, and the optical axis; HIF422 is a distance perpendicular to the optical axis between the inflection point on the image-side surface of the fourth lens, which is the second closest to the optical axis, and the optical axis.
The fifth lens 150 has positive refractive power and is made of plastic. An object-side surface 152, which faces the object side, is a convex aspheric surface, and an image-side surface 154, which faces the image side, is a concave aspheric surface. The object-side surface 152 and the image-side surface 154 both have two inflection points. A profile curve length of the maximum effective half diameter of an object-side surface of the fifth lens 150 is denoted by ARS51, and a profile curve length of the maximum effective half diameter of the image-side surface of the fifth lens 150 is denoted by ARS52. A profile curve length of a half of an entrance pupil diameter (HEP) of the object-side surface of the fifth lens 150 is denoted by ARE51, and a profile curve length of a half of the entrance pupil diameter (HEP) of the image-side surface of the fifth lens 150 is denoted by ARE52. A thickness of the fifth lens 150 on the optical axis is TP5.
The fifth lens 150 satisfies SGI511=0.02069 mm; SGI521=0.00984 mm; |SGI511|/(|SGI511|+TP5)=0.07040; |SGI521|/(|SGI521|+TP5)=0.03479, where SGI511 is a displacement in parallel with the optical axis, from a point on the object-side surface of the fifth lens, through which the optical axis passes, to the inflection point on the object-side surface, which is the closest to the optical axis, and SGI521 is a displacement in parallel with the optical axis, from a point on the image-side surface of the fifth lens, through which the optical axis passes, to the inflection point on the image-side surface, which is the closest to the optical axis.
The fifth lens 150 satisfies SGI512=−0.17881 mm; SGI522=−0.21283 mm; |SGI512|/(|SGI512|+TP5)=1.89553; |SGI522|/(|SGI522|+TP5)=3.52847, where SGI512 is a displacement in parallel with the optical axis, from a point on the object-side surface of the fifth lens, through which the optical axis passes, to the inflection point on the object-side surface, which is the second closest to the optical axis, and SGI522 is a displacement in parallel with the optical axis, from a point on the image-side surface of the fifth lens, through which the optical axis passes, to the inflection point on the object-side surface, which is the second closest to the optical axis.
The fifth lens 150 further satisfies HIF511=0.54561 mm; HIF521=0.45768 mm; HIF511/HOI=0.13944; HIF521/HOI=0.11696, where HIF511 is a distance perpendicular to the optical axis between the inflection point on the object-side surface of the fifth lens, which is the closest to the optical axis, and the optical axis; HIF521 is a distance perpendicular to the optical axis between the inflection point on the image-side surface of the fifth lens, which is the closest to the optical axis, and the optical axis.
The fifth lens 150 further satisfies HIF512=1.6428 mm; HIF522=1.66808 mm; HIF512/HOI=0.41983; HIF522/HOI=0.42629, where HIF512 is a distance perpendicular to the optical axis between the inflection point on the object-side surface of the fifth lens, which is the second closest to the optical axis, and the optical axis; HIF522 is a distance perpendicular to the optical axis between the inflection point on the image-side surface of the fifth lens, which is the second closest to the optical axis, and the optical axis.
The sixth lens 160 has positive refractive power and is made of plastic. An object-side surface 162, which faces the object side, is a convex surface, and an image-side surface 164, which faces the image side, is a convex surface. The object-side surface 162 has at least one inflection point. Whereby, incident angle of each field of view for the sixth lens can be effectively adjusted to improve aberration. A profile curve length of the maximum effective half diameter of an object-side surface of the sixth lens 160 is denoted by ARS61, and a profile curve length of the maximum effective half diameter of the image-side surface of the sixth lens 160 is denoted by ARS62. A profile curve length of a half of an entrance pupil diameter (HEP) of the object-side surface of the sixth lens 160 is denoted by ARE61, and a profile curve length of a half of the entrance pupil diameter (HEP) of the image-side surface of the sixth lens 160 is denoted by ARE62. A thickness of the sixth lens 160 on the optical axis is TP6.
The sixth lens 160 satisfies SGI611=0.03349 mm; |SGI611|/(|SGI611|+TP6)=0.03224, where SGI611 is a displacement in parallel with the optical axis, from a point on the object-side surface of the sixth lens, through which the optical axis passes, to the inflection point on the object-side surface, which is the closest to the optical axis, and SGI621 is a displacement in parallel with the optical axis, from a point on the image-side surface of the sixth lens, through which the optical axis passes, to the inflection point on the image-side surface, which is the closest to the optical axis.
The sixth lens 160 further satisfies HIF611=0.78135 mm; HIF611/HOI=0.19968, where HIF611 is a distance perpendicular to the optical axis between the inflection point on the object-side surface of the sixth lens, which is the closest to the optical axis, and the optical axis; HIF621 is a distance perpendicular to the optical axis between the inflection point on the image-side surface of the sixth lens, which is the closest to the optical axis, and the optical axis.
The seventh lens 170 has negative refractive power and is made of plastic. An object-side surface 172, which faces the object side, is a concave surface, and an image-side surface 174, which faces the image side, is a concave surface. Whereby, it is helpful to shorten the focal length behind the seventh lens for miniaturization. The image-side surface 174 has an inflection point. A profile curve length of the maximum effective half diameter of an object-side surface of the seventh lens 170 is denoted by ARS71, and a profile curve length of the maximum effective half diameter of the image-side surface of the seventh lens 170 is denoted by ARS72. A profile curve length of a half of an entrance pupil diameter (HEP) of the object-side surface of the seventh lens 170 is denoted by ARE71, and a profile curve length of a half of the entrance pupil diameter (HEP) of the image-side surface of the seventh lens 170 is denoted by ARE72. A thickness of the seventh lens 170 on the optical axis is TP7.
The seventh lens 170 satisfies SGI721=0.02449 mm; |SGI721|/(|SGI721|+TP7)=0.08004, where SGI711 is a displacement in parallel with the optical axis, from a point on the object-side surface of the seventh lens, through which the optical axis passes, to the inflection point on the object-side surface, which is the closest to the optical axis, and SGI721 is a displacement in parallel with the optical axis, from a point on the image-side surface of the seventh lens, through which the optical axis passes, to the inflection point on the image-side surface, which is the closest to the optical axis.
The seventh lens 170 further satisfies HIF721=0.71190 mm; HIF721/HOI=0.18193, where HIF711 is a distance perpendicular to the optical axis between the inflection point on the object-side surface of the seventh lens, which is the closest to the optical axis, and the optical axis; HIF721 is a distance perpendicular to the optical axis between the inflection point on the image-side surface of the seventh lens, which is the closest to the optical axis, and the optical axis.
The features related to the inflection points in the present embodiment described below are obtained with the main reference wavelength 555 nm.
The infrared rays filter 180 is made of glass and between the seventh lens 170 and the image plane 190. The infrared rays filter 180 gives no contribution to the focal length of the system.
The optical image capturing system 10 of the first embodiment has the following parameters, which are f=4.5707 mm; f/HEP=1.8; HAF=40; and tan(HAF)=0.8390, where f is a focal length of the system; HAF is a half of the maximum field angle; and HEP is an entrance pupil diameter.
The parameters of the lenses of the first embodiment are f1=4.4284 mm; |f/f1|=1.03; f7=−2.8334; |f1|>f7; and |f1/f7|=1.56, where f1 is a focal length of the first lens 110; and f7 is a focal length of the seventh lens 170.
The first embodiment further satisfies |f2|+|f3|+|f4|+|f5|+|f6|=90.6484; |f1|+|f7|=7.2618 and |f2|+|f3|+|f4|+|f5|+|f6|>|f1|+|f7|, where f2 is a focal length of the second lens 120, f3 is a focal length of the third lens 130, f4 is a focal length of the fourth lens 140, f5 is a focal length of the fifth lens 150, f6 is a focal length of the sixth lens 160, and f7 is a focal length of the seventh lens 170.
The optical image capturing system 10 of the first embodiment further satisfies ΣPPR=f/f1+f/f4+f/f5+f/f6=2.40; ΣNPR=f/f2+f/f3+f/f7=−2.26; ΣPPR/|ΣNPR|=1.07; |f/f2|=0.44; |f/f3|=0.19; |f/f4|=0.22; |f/f5|=0.15; |f/f6|=0.996; |f/f7|=1.62, where PPR is a ratio of a focal length f of the optical image capturing system to a focal length fp of each of the lenses with positive refractive power; and NPR is a ratio of a focal length f of the optical image capturing system to a focal length fn of each of lenses with negative refractive power.
The optical image capturing system 10 of the first embodiment further satisfies InTL+BFL=HOS; HOS=6.0044 mm; HOI=3.8353 mm; HOS/HOI=5.2257; HOS/f=1.3137; InS=5.2899 mm; and InS/HOS=0.8810, where InTL is a distance between the object-side surface 112 of the first lens 110 and the image-side surface 174 of the seventh lens 170; HOS is a height of the image capturing system, i.e. a distance between the object-side surface 112 of the first lens 110 and the image plane 190; InS is a distance between the aperture 100 and the image plane 190; HOI is a half of a diagonal of an effective sensing area of the image sensor 192, i.e., the maximum image height; and BFL is a distance between the image-side surface 174 of the seventh lens 170 and the image plane 190.
The optical image capturing system 10 of the first embodiment further satisfies ΣTP=3.2467 mm; and ΣTP/InTL=0.6088, where ΣTP is a sum of the thicknesses of the lenses 110-170 with refractive power. It is helpful for the contrast of image and yield rate of manufacture and provides a suitable back focal length for installation of other elements.
The optical image capturing system 10 of the first embodiment further satisfies |R1/R2|=0.0861, where R1 is a radius of curvature of the object-side surface 112 of the first lens 110, and R2 is a radius of curvature of the image-side surface 114 of the first lens 110. It provides the first lens with a suitable positive refractive power to reduce the increase rate of the spherical aberration.
The optical image capturing system 10 of the first embodiment further satisfies (R13−R14)/(R13+R14)=−1.5469, where R13 is a radius of curvature of the object-side surface 172 of the seventh lens 170, and R14 is a radius of curvature of the image-side surface 174 of the seventh lens 170. It may modify the astigmatic field curvature.
The optical image capturing system 10 of the first embodiment further satisfies ΣPP=f1+f4+f5+f6=60.2624 mm; and f1/(f1+f4+f5+f6)=0.0731, where f1, f4, f5, and f6 are respectively the focal lengths of the first lens 110, the fourth lens 140, the fifth lens 150, and the sixth lens 160; ΣPP is a sum of the focal lengths fp of each lens with positive refractive power. It is helpful to share the positive refractive power of the first lens 110 to other positive lenses to avoid the significant aberration caused by the incident rays.
The optical image capturing system 10 of the first embodiment further satisfies ΣNP=f2+f3+f7=−36.8510 mm; and f7/(f2+f3+f7)=0.0765, where f2, f3, and f7 are respectively the focal lengths of the second lens 120, the third lens 130, and the seventh lens 170; ΣNP is a sum of the focal lengths fn of each lens with negative refractive power. It is helpful to share the negative refractive power of the seventh lens 170 to other negative lenses, which avoids the significant aberration caused by the incident rays.
The optical image capturing system 10 of the first embodiment further satisfies IN12=0.1352 mm; IN12/f=0.0296, where IN12 is a distance on the optical axis between the first lens 110 and the second lens 120. It may correct chromatic aberration and improve the performance.
The optical image capturing system 10 of the first embodiment further satisfies TP1=0.6689 mm; TP2=0.23 mm; and (TP1+IN12)/TP2=3.4961, where TP1 is a central thickness of the first lens 110 on the optical axis, and TP2 is a central thickness of the second lens 120 on the optical axis. It may control the sensitivity of manufacture of the system and improve the performance.
The optical image capturing system 10 of the first embodiment further satisfies TP6=1.0055 mm; TP7=0.2814 mm; and (TP7+IN67)/TP6=1.1176, where TP6 is a central thickness of the sixth lens 160 on the optical axis, TP7 is a central thickness of the seventh lens 170 on the optical axis, and IN67 is a distance on the optical axis between the sixth lens 160 and the seventh lens 170. It may control the sensitivity of manufacture of the system and lower the total height of the system.
The optical image capturing system 10 of the first embodiment further satisfies TP3=0.23 mm; TP4=0.5578 mm; TP5=0.2731 mm; IN34=0.054835 mm; IN45=0.15197 mm; and TP4/(IN34+TP4+IN45)=0.72952, where TP3 is a central thickness of the third lens 130 on the optical axis, TP4 is a central thickness of the fourth lens 140 on the optical axis, TP5 is a central thickness of the fifth lens 150 on the optical axis, IN34 is a distance on the optical axis between the third lens 130 and the fourth lens 140, and IN45 is a distance on the optical axis between the fourth lens 140 and the fifth lens 150. It may control the sensitivity of manufacture of the system and lower the total height of the system.
The optical image capturing system 10 of the first embodiment further satisfies InRS61=−0.3725 mm; InRS62=−1.0961 mm; and |InRS62|/TP6=1.0901, where InRS61 is a displacement in parallel with the optical axis from a point on the object-side surface 162 of the sixth lens 160, through which the optical axis passes, to a point at the maximum effective semi diameter of the object-side surface 162 of the sixth lens; InRS62 is a displacement in parallel with the optical axis from a point on the image-side surface 164 of the sixth lens 160, through which the optical axis passes, to a point at the maximum effective semi diameter of the image-side surface 164 of the sixth lens 160; and TP6 is a central thickness of the sixth lens 160 on the optical axis. It is helpful for manufacturing and shaping of the lenses and is helpful to reduce the size.
The optical image capturing system 10 of the first embodiment further satisfies HVT61=1.2142 mm; HVT62=0 mm; and HVT61/HVT62=0, where HVT61 a distance perpendicular to the optical axis between the critical point on the object-side surface 162 of the sixth lens 160 and the optical axis; and HVT62 a distance perpendicular to the optical axis between the critical point on the image-side surface 164 of the sixth lens 160 and the optical axis.
The optical image capturing system 10 of the first embodiment further satisfies InRS71=−1.851 mm; InRS72=−1.0045 mm; and |InRS72|/TP7=3.5697, where InRS71 is a displacement in parallel with the optical axis from a point on the object-side surface 172 of the seventh lens 170, through which the optical axis passes, to a point at the maximum effective semi diameter of the object-side surface 172 of the seventh lens 170; InRS72 is a displacement in parallel with the optical axis from a point on the image-side surface 174 of the seventh lens 170, through which the optical axis passes, to a point at the maximum effective semi diameter of the image-side surface 174 of the seventh lens 170; and TP7 is a central thickness of the seventh lens 170 on the optical axis. It is helpful for manufacturing and shaping of the lenses and is helpful to reduce the size.
The optical image capturing system 10 of the first embodiment satisfies HVT71=0 mm; HVT72=1.2674 mm; and HVT71/HVT72=0, where HVT71 a distance perpendicular to the optical axis between the critical point on the object-side surface 172 of the seventh lens 170 and the optical axis; and HVT72 a distance perpendicular to the optical axis between the critical point on the image-side surface 174 of the seventh lens 170 and the optical axis.
The optical image capturing system 10 of the first embodiment satisfies HVT72/HOI=0.3305. It is helpful for correction of the aberration of the peripheral view field of the optical image capturing system.
The optical image capturing system 10 of the first embodiment satisfies HVT72/HOS=0.2111. It is helpful for correction of the aberration of the peripheral view field of the optical image capturing system.
The second lens 120, the third lens 130, and the seventh lens 170 have negative refractive power. The optical image capturing system 10 of the first embodiment further satisfies 1≦NA7/NA2, where NA2 is an Abbe number of the second lens 120; and NA7 is an Abbe number of the seventh lens 170. It may correct the aberration of the optical image capturing system.
The optical image capturing system 10 of the first embodiment further satisfies |TDT|=0.94%; |ODT|=1.9599%, where TDT is TV distortion; and ODT is optical distortion.
For the fifth lens 150 of the optical image capturing system 10 in the first embodiment, a transverse aberration at 0.7 field of view in the positive direction of the tangential fan after the longest operation wavelength of visible light passing through the edge of the aperture 100 is denoted by PLTA, and is 0.002 mm; a transverse aberration at 0.7 field of view in the positive direction of the tangential fan after the shortest operation wavelength of visible light passing through the edge of the aperture 100 is denoted by PSTA, and is 0.007 mm; a transverse aberration at 0.7 field of view in the negative direction of the tangential fan after the longest operation wavelength of visible light passing through the edge of the aperture 100 is denoted by NLTA, and is −0.002 mm; a transverse aberration at 0.7 field of view in the negative direction of the tangential fan after the shortest operation wavelength of visible light passing through the edge of the aperture 100 is denoted by NSTA, and is −0.003 mm; a transverse aberration at 0.7 field of view of the sagittal fan after the longest operation wavelength of visible light passing through the edge of the aperture 100 is denoted by SLTA, and is 0.002 mm; a transverse aberration at 0.7 field of view of the sagittal fan after the shortest operation wavelength of visible light passing through the edge of the aperture 100 is denoted by SSTA, and is 0.004 mm.
The parameters of the lenses of the first embodiment are listed in Table 1 and Table 2.







TABLE 1







f = 4.5707 mm; f/HEP = 1.8; HAF = 40 deg














Radius of 
Thickness

Refractive
Abbe
Focal length


Surface
curvature (mm)
(mm)
Material
index
number
(mm)

















0
Object
plane
infinity






1
1st lens
2.29712
0.668946
plastic
1.565
58
4.405


2

26.68297
0.045368






3
Aperture
plane
0.089845






4
2nd lens
13.65238
0.23
plastic
1.65
21.4
−10.384


5

4.48669
0.358683






6
3rd lens
−22.8014
0.23
plastic
1.65
21.4
−23.649


7

47.36599
0.054835






8
4th lens
13.20186
0.557788
plastic
1.565
58
20.384


9

−88.8646
0.15197






10
5th lens
5.93232
0.273144
plastic
1.565
58
30.886


11

8.83826
0.542787






12
6th lens
7.94491
1.005484
plastic
1.565
58
4.587


13

−3.67115
0.842285






14
7th lens
−1.83128
0.281438
plastic
1.565
58
−2.818


15

8.52815
0.2






16
Infrared
plane
0.2
BK_7
1.517
64.2




rays









filter








17

plane
0.267427






18
Image
plane








plane











Reference wavelength (d-line): 587.5 nm.













TABLE 2





Coefficients of the aspheric surfaces

















Surface















1
2
4
5
6
7
8





k
  0.41223
23.12364
41.72578
  7.17837
49.99854
−50.00000
−36.62296


A4
−2.71583E−03
 1.12798E−02
 2.61376E−03
−1.30847E−02
−2.29364E−02
 −1.22682E−02
 −1.46685E−02


A6
  1.46922E−03
−4.13663E−03
−1.04751E−03
−6.19251E−03
−1.07500E−02
 −1.19599E−03
   6.97097E−04


A8
−1.16798E−03
  2.64633E−03
  1.64429E−03
  3.31848E−03
  1.74194E−03
   2.58555E−03
 −7.00461E−05


A10
  3.86338E−04
−4.87913E−04
  1.38781E−04
−2.16169E−03
−1.35269E−03
   8.44094E−04
   2.49597E−04


A12









A14












Surface















9
10
11
12
13
14
15





k
50.00000
−48.11219
−49.99984
−16.63997
−2.21871
−0.59182
−38.73828


A4
−3.04263E−02
 −2.44747E−02
 −3.74075E−02
 −6.98486E−03
  1.46247E−02
  3.52383E−03
 −1.36118E−02


A6
−3.91762E−03
 −4.89633E−03
   2.04344E−04
 −4.00620E−03
−6.01684E−03
−6.07710E−03
 −4.77797E−06


A8
−8.89754E−04
 −9.29273E−04
 −3.75360E−04
 −3.83899E−04
−3.42351E−04
  4.66383E−04
   2.50062E−05


A10
−4.10632E−06
 −2.24070E−05
 −4.59214E−04
 −7.50806E−05
  1.51881E−05
  1.30961E−04
   1.57226E−06


A12

 −3.81083E−04
 −7.68111E−05
 −5.94891E−06
  1.57349E−06
  9.98584E−06
   4.62952E−08


A14

   1.44730E−04
   6.86388E−05
 −2.82154E−06
  2.09638E−07
−3.94438E−06
 −3.77857E−08









The figures related to the profile curve lengths obtained based on Table 1 and Table 2 are listed in the following table:










First embodiment (Reference wavelength: 555 nm)























ARE
ARE-
2(ARE/HEP)

ARE/


ARE
1/2(HEP)
value
1/2(HEP)
%
TP
TP (%)





11
1.267
1.347
0.080
106.30%
0.669
201.33%


12
1.189
1.190
0.001
100.08%
0.669
177.95%


21
1.225
1.228
0.003
100.25%
0.230
534.06%


22
1.246
1.258
0.012
100.98%
0.230
547.00%


31
1.261
1.277
0.016
101.27%
0.230
555.18%


32
1.267
1.266
−0.001
 99.94%
0.230
550.50%


41
1.267
1.266
−0.001
 99.95%
0.558
227.02%


42
1.267
1.277
0.010
100.79%
0.558
228.93%


51
1.267
1.269
0.002
100.17%
0.273
464.63%


52
1.267
1.269
0.003
100.20%
0.273
464.77%


61
1.267
1.268
0.001
100.05%
1.005
126.06%


62
1.267
1.287
0.020
101.55%
1.005
127.96%


71
1.267
1.379
0.112
108.83%
0.281
489.92%


72
1.267
1.267
0.000
100.00%
0.281
450.18%







ARS
ARS-
(ARS/EHD)

ARS/TP


ARS
EHD
value
EHD
%
TP
(%)





11
1.382
1.494
0.112
108.09%
0.669
223.38%


12
1.189
1.190
0.001
100.08%
0.669
177.95%


21
1.225
1.228
0.003
100.25%
0.230
534.06%


22
1.246
1.258
0.012
100.98%
0.230
547.00%


31
1.261
1.277
0.016
101.27%
0.230
555.18%


32
1.398
1.399
0.001
100.07%
0.230
608.17%


41
1.458
1.458
0.000
100.00%
0.558
261.44%


42
1.586
1.653
0.068
104.26%
0.558
296.38%


51
1.681
1.738
0.057
103.38%
0.273
636.41%


52
1.778
1.843
0.065
103.64%
0.273
674.80%


61
1.988
2.165
0.177
108.88%
1.005
215.32%


62
2.225
2.651
0.425
119.11%
1.005
263.62%


71
2.264
3.098
0.834
136.84%
0.281
1100.83% 


72
3.193
3.601
0.408
112.78%
0.281
1279.56% 









The detail parameters of the first embodiment are listed in Table 1, in which the unit of the radius of curvature, thickness, and focal length are millimeter, and surface 0-10 indicates the surfaces of all elements in the system in sequence from the object side to the image side. Table 2 is the list of coefficients of the aspheric surfaces, in which A1-A20 indicate the coefficients of aspheric surfaces from the first order to the twentieth order of each aspheric surface. The following embodiments have the similar diagrams and tables, which are the same as those of the first embodiment, so we do not describe it again.
Second Embodiment
As shown in FIG. 2A and FIG. 2B, an optical image capturing system 20 of the second embodiment of the present invention includes, along an optical axis from an object side to an image side, a first lens 210, an aperture 200, a second lens 220, a third lens 230, a fourth lens 240, a fifth lens 250, a sixth lens 260, a seven lens 270, an infrared rays filter 280, an image plane 290, and an image sensor 292. FIG. 2C is a transverse aberration diagram at 0.7 field of view of the second embodiment of the present application.
The first lens 210 has positive refractive power and is made of plastic. An object-side surface 212 thereof, which faces the object side, is a convex aspheric surface, and an image-side surface 214 thereof, which faces the image side, is a convex aspheric surface. The object-side surface 212 has two inflection points, and the image-side surface 214 has an inflection point.
The second lens 220 has negative refractive power and is made of plastic. An object-side surface 222 thereof, which faces the object side, is a convex aspheric surface, and an image-side surface 224 thereof, which faces the image side, is a concave aspheric surface. The image-side surface 224 has an inflection point.
The third lens 230 has negative refractive power and is made of plastic. An object-side surface 232, which faces the object side, is a concave aspheric surface, and an image-side surface 234, which faces the image side, is a concave aspheric surface. The image-side surface 234 has an inflection point.
The fourth lens 240 has positive refractive power and is made of plastic. An object-side surface 242, which faces the object side, is a concave aspheric surface, and an image-side surface 244, which faces the image side, is a convex aspheric surface. The object-side surface 242 and the image-side surface 244 both have an inflection point.
The fifth lens 250 has positive refractive power and is made of plastic. An object-side surface 252, which faces the object side, is a convex surface, and an image-side surface 254, which faces the image side, is a concave surface. The object-side surface 252 and the image-side surface 254 are both aspheric surfaces. The object-side surface 252 and the image-side surface 254 both have an inflection point.
The sixth lens 260 has positive refractive power and is made of plastic. An object-side surface 262, which faces the object side, is a concave surface, and an image-side surface 264, which faces the image side, is a convex surface. Whereby, incident angle of each field of view for the sixth lens can be effectively adjusted to improve aberration.
The seventh lens 270 has negative refractive power and is made of plastic. An object-side surface 272, which faces the object side, is a convex surface, and an image-side surface 274, which faces the image side, is a concave surface. It may help to shorten the back focal length to keep small in size. In addition, the image-side surface 274 of the seventh lens 270 has an inflection point, which may reduce an incident angle of the light of an off-axis field of view and correct the aberration of the off-axis field of view.
The infrared rays filter 280 is made of glass and between the seventh lens 270 and the image plane 290. The infrared rays filter 280 gives no contribution to the focal length of the system.
The optical image capturing system of the second embodiment satisfies |f2|+|f3|+|f4|+|f5|+|f6|=51.9801; |f1|+|f7|=8.6420; and |f2|+|f3|+|f4|+|f5|+f6|>|f1|+|f7|, where f1 is a focal length of the first lens 210, f2 is a focal length of the second lens 220, f3 is a focal length of the third lens 230, f4 is a focal length of the fourth lens 240, f5 is a focal length of the fifth lens 250, f6 is a focal length of the sixth lens 260, and f7 is a focal length of the seventh lens 270.
The optical image capturing system 20 of the second embodiment further satisfies TP6=0.9525 mm; and TP7=0.4852 mm, where TP6 is a central thickness of the sixth lens 260 on the optical axis, TP7 is a central thickness of the seventh lens 270 on the optical axis.
In the second embodiment, the optical image capturing system of the second embodiment further satisfies ΣPP=35.8351 mm; and f1/ΣPP=0.1647, where ΣPP is a sum of the focal lengths of each positive lens. It is helpful to share the positive refractive power of one single lens to other positive lenses to avoid the significant aberration caused by the incident rays.
The optical image capturing system of the second embodiment further satisfies ΣNP=−24.7870 mm; and f7/ΣNP=0.1106, where ΣNP is a sum of the focal lengths of each negative lens. It is helpful to share the negative refractive power of the sixth lens 260 to other negative lenses.
The parameters of the lenses of the second embodiment are listed in Table 3 and Table 4.







TABLE 3







f = 5.2526 mm; f/HEP = 1.7; HAF = 36 deg














Radius of 
Thickness

Refractive
Abbe
Focal length


Surface
curvature (mm)
(mm)
Material
index
number
(mm)

















0
Object
plane
infinity






1
1st lens
68.11996
0.483487
plastic
1.565
58
4.405


2

−3.49625
0






3
Aperture
plane
0.05






4
2nd lens
4.03473
0.447528
plastic
1.55
56.5
−10.384


5

2.57638
0.858457






6
3rd lens
−5.20633
0.23
plastic
1.65
21.4
−23.649


7

78.27114
0.115778






8
4th lens
−141.931
0.622323
plastic
1.565
58
20.384


9

−4.21078
0.05






10
5th lens
7.56606
0.714199
plastic
1.565
58
30.886


11

25.07635
1.192391






12
6th lens
−19.0648
0.952472
plastic
1.565
58
4.587


13

−1.76128
0.403276






14
7th lens
−137.931
0.48516
plastic
1.53
55.8
−2.818


15

1.47037
0.5






16
Infrared
plane
0.2
BK_7
1.517
64.2




rays









filter








17

plane
0.694929






18
Image
plane








plane











Reference wavelength (d-line): 587.5 nm.













TABLE 4





Coefficients of the aspheric surfaces

















Surface















1
2
4
5
6
7
8





k
−50
−21.586601
−5.210483
−12.5848
  5.807337
−50
50


A4
 −3.30061E−03
 −7.05919E−03
−2.64853E−03
 −9.68664E−03
−6.05571E−03
 −6.49213E−03
−1.19614E−02


A6
   2.10836E−04
   1.78341E−03
  1.43036E−03
   2.50120E−03
  1.10636E−03
   1.48510E−03
  4.37485E−05


A8
 −5.02110E−04
 −8.63373E−04
−5.21815E−04
 −2.85206E−05
−5.79228E−04
 −2.52288E−04
−1.54836E−04


A10
   1.12193E−04
   1.53993E−04
  9.36345E−05
 −5.99588E−05
−2.52690E−05
   2.05622E−05
  6.55356E−05


A12









A14












Surface















9
10
11
12
13
14
15





k
  0.292426
−0.518495
42.211497
50
−5.176421
−50
−5.363923


A4
−1.79560E−03
−1.75404E−03
−7.72726E−03
 2.46323E−03
−3.36582E−03
 −2.20116E−02
−1.45174E−02


A6
  2.67143E−04
  2.32594E−05
  1.79035E−04
 1.22405E−04
  6.30874E−04
   1.02246E−03
  9.01618E−04


A8
  2.47676E−05
−9.54522E−05
−1.39442E−05
−9.38681E−05
−5.96198E−05
   2.85159E−04
−4.47595E−05


A10
  3.74307E−05
−1.20664E−05
−5.48540E−06
−1.20263E−05
−8.31172E−06
   9.23914E−06
−6.73215E−07


A12

  2.94692E−06
−1.64479E−06
−3.82680E−07
−1.67895E−07
 −1.48358E−06
  3.21116E−08


A14

  9.92798E−07
  1.15804E−07
  2.53737E−07
  7.24677E−08
   3.09070E−07
  1.29223E−09









An equation of the aspheric surfaces of the second embodiment is the same as that of the first embodiment, and the definitions are the same as well.
The exact parameters of the second embodiment based on Table 3 and Table 4 are listed in the following table:










Second embodiment (Reference wavelength: 555 nm)




















|f/f1|
|f/f2|
|f/f3|
|f/f4|
|f/f5|
|f/f6|


0.8923
0.3619
0.7054
0.6866
0.2786
1.5634


|f/f7|
Σ PPR
Σ NPR
Σ PPR/|Σ NPR|
IN12/f
IN67/f


1.9205
3.4208
2.9879
1.1449
0.0095
0.0768










|f1/f2|
|f2/f3|
(TP1 + IN12)/TP2
(TP7 + IN67)/TP6


0.4056
1.9490
1.1921
0.9328












HOS
InTL
HOS/HOI
InS/HOS
ODT %
TDT %


7.9980
6.6051
2.7466
0.9395
2.1897
0.5697


HVT61
HVT62
HVT71
HVT72
HVT72/HOI
HVT72/HOS


0.0000
0.0000
0.0000
2.2407
0.7695
0.2802


PLTA
PSTA
NLTA
NSTA
SLTA
SSTA


−0.008 mm
−0.005 mm
−0.023 mm
−0.024 mm
0.003 mm
0.009 mm









The figures related to the profile curve lengths obtained based on Table 3 and Table 4 are listed in the following table:










Second embodiment (Reference wavelength: 555 nm)























ARE
ARE-
2(ARE/HEP)

ARE/


ARE
1/2(HEP)
value
1/2(HEP)
%
TP
TP (%)





11
1.541
1.541
−0.00013
 99.99%
0.483
318.79%


12
1.541
1.564
0.02255
101.46%
0.483
323.48%


21
1.541
1.567
0.02575
101.67%
0.448
350.19%


22
1.541
1.555
0.01392
100.90%
0.448
347.54%


31
1.541
1.603
0.06146
103.99%
0.230
696.91%


32
1.541
1.544
0.00211
100.14%
0.230
671.11%


41
1.541
1.545
0.00357
100.23%
0.622
248.26%


42
1.541
1.582
0.04018
102.61%
0.622
254.15%


51
1.541
1.550
0.00810
100.53%
0.714
216.96%


52
1.541
1.541
−0.00013
 99.99%
0.714
215.81%


61
1.541
1.543
0.00116
100.07%
0.952
161.96%


62
1.541
1.618
0.07706
105.00%
0.952
169.93%


71
1.541
1.554
0.01273
100.83%
0.485
320.34%


72
1.541
1.599
0.05722
103.71%
0.485
329.51%







ARS
ARS-
(ARS/EHD)

ARS/TP


ARS
EHD
value
EHD
%
TP
(%)





11
1.970
1.971
0.001
100.07%
0.483
407.65%


12
1.900
1.936
0.036
101.89%
0.483
400.39%


21
1.701
1.735
0.033
101.96%
0.448
387.63%


22
1.750
1.766
0.016
100.94%
0.448
394.67%


31
1.763
1.909
0.146
108.27%
0.230
829.94%


32
2.031
2.073
0.041
102.04%
0.230
901.11%


41
2.089
2.106
0.017
100.80%
0.622
338.36%


42
2.161
2.260
0.099
104.60%
0.622
363.19%


51
2.357
2.394
0.038
101.60%
0.714
335.24%


52
2.474
2.585
0.112
104.51%
0.714
361.96%


61
2.591
2.684
0.093
103.60%
0.952
281.80%


62
2.682
2.969
0.288
110.73%
0.952
311.74%


71
2.722
3.197
0.475
117.45%
0.485
658.95%


72
3.559
4.014
0.455
112.79%
0.485
827.42%









The results of the equations of the second embodiment based on Table 3 and Table 4 are listed in the following table:










Values related to the inflection points of the second embodiment






















HIF111
0.57370
HIF111/HOI
0.14664
SGI111
0.002043
|SGI111|/(|SGI111| + TP1) 
0.00420


HIF112
1.81571
HIF112/HOI
0.46412
SGI112
−0.03506
|SGI112|/(|SGI112| + TP1) 
0.07818


HIF221
0.83215
HIF221/HO1
0.21271
SGI221
0.10262
|SGI221|/(|SGI221| + TP2)
0.18653


HIF321
0.38758
HIF321/HOI
0.09907
SGI321
0.000808
|SGI321|/(|SGI321| + TP3)
0.00349


HIF411
1.87684
HIF411/HOI
0.47975
SGI411
−0.15107
|SGI411|/(|SGI411| + TP4)
0.3205


HIF421
1.85862
HIF421/HOI
0.47509
SGI421
−0.45039
|SGI421|/(|SGI421| + TP4)
2.6195


HIF511
1.49057
HIF511/HOI
0.38101
SGI511
0.135716
|SGI511|/(|SGI511| + TP5)
0.15968


HIF521
0.66203
HIF521/HOI
0.16922
SGI521
0.007306
|SGI521|/(|SGI521| + TP5)
0.01012


HIF721
0.96202
HIF721/HOI
0.24591
SGI721
0.221927
|SGI721|/(|SGI721| + TP7)
0.31386









Third Embodiment
As shown in FIG. 3A and FIG. 3B, an optical image capturing system of the third embodiment of the present invention includes, along an optical axis from an object side to an image side, an aperture 300, a first lens 310, a second lens 320, a third lens 330, a fourth lens 340, a fifth lens 350, a sixth lens 360, a seventh lens 370, an infrared rays filter 380, an image plane 390, and an image sensor 392. FIG. 3C is a transverse aberration diagram at 0.7 field of view of the third embodiment of the present application.
The first lens 310 has positive refractive power and is made of plastic. An object-side surface 312 thereof, which faces the object side, is a convex aspheric surface, and an image-side surface 314 thereof, which faces the image side, is a concave aspheric surface. The image-side surface 314 has an inflection point.
The second lens 320 has negative refractive power and is made of plastic. An object-side surface 322 thereof, which faces the object side, is a concave aspheric surface, and an image-side surface 324 thereof, which faces the image side, is a concave aspheric surface.
The third lens 330 has positive refractive power and is made of plastic. An object-side surface 332 thereof, which faces the object side, is a convex surface, and an image-side surface 334 thereof, which faces the image side, is a convex aspheric surface. The object-side surface 332 has an inflection point.
The fourth lens 340 has positive refractive power and is made of plastic. An object-side surface 342, which faces the object side, is a convex aspheric surface, and an image-side surface 344, which faces the image side, is a concave aspheric surface. The object-side surface 342 and the image-side surface 344 both have an inflection point.
The fifth lens 350 has positive refractive power and is made of plastic. An object-side surface 352, which faces the object side, is a convex surface, and an image-side surface 354, which faces the image side, is a convex surface. The object-side surface 352 and the image-side surface 354 are both aspheric surface. The object-side surface 352 has an inflection point, and the image-side surface 354 has two inflection points.
The sixth lens 360 has negative refractive power and is made of plastic. An object-side surface 362, which faces the object side, is a concave surface, and an image-side surface 364, which faces the image side, is a convex surface. The object-side surface 362 has two inflection points, and the image-side surface 364 has an inflection point. Whereby, incident angle of each field of view for the sixth lens can be effectively adjusted to improve aberration
The seventh lens 370 has negative refractive power and is made of plastic. An object-side surface 372, which faces the object side, is a concave surface, and an image-side surface 374, which faces the image side, is a concave surface. It may help to shorten the back focal length to keep small in size. In addition, the object-side surface 372 and the image-side surface 374 both have an inflection point, which may reduce an incident angle of the light of an off-axis field of view and correct the aberration of the off-axis field of view.
The infrared rays filter 380 is made of glass and between the seventh lens 370 and the image plane 390. The infrared rays filter 390 gives no contribution to the focal length of the system.
The optical image capturing system of the second embodiment satisfies f2|+|f3|+|f4|+|f5|+|f6|=53.9016; |f1|+|f7|=9.0440; and |f2|+|f3|+|f4|+|f5|+|f6|>|f1|+|f7|, where f1 is a focal length of the first lens 310, f2 is a focal length of the second lens 320, f3 is a focal length of the third lens 330, f4 is a focal length of the fourth lens 340, f5 is a focal length of the fifth lens 350, f6 is a focal length of the sixth lens 360, and f7 is a focal length of the seventh lens 370.
The optical image capturing system 30 of the third embodiment further satisfies TP6=0.3549 mm; and TP7=0.3521 mm, where TP6 is a central thickness of the sixth lens 360 on the optical axis, TP7 is a central thickness of the seventh lens 370 on the optical axis.
In the third embodiment, the optical image capturing system of the third embodiment further satisfies ΣPP=44.4613 mm; and f1/ΣPP=0.1136, where ΣPP is a sum of the focal lengths of each positive lens. It is helpful to share the positive refractive power of one single lens to other positive lenses to avoid the significant aberration caused by the incident rays.
The optical image capturing system of the third embodiment further satisfies ΣNP=−18.4843 mm; and f2/ΣNP=0.2160, where ΣNP is a sum of the focal lengths of each negative lens. It is helpful to share the negative refractive power of the sixth lens 360 to other negative lenses.
The parameters of the lenses of the third embodiment are listed in Table 5 and Table 6.







TABLE 5







f = 4.5724 mm; f/HEP = 2.0; HAF = 40 deg














Radius of 
Thickness

Refractive
Abbe
Focal length


Surface
curvature (mm)
(mm)
Material
index
number
(mm)

















0
Object
plane
infinity






1
Aperture
plane
−0.33354






2
1st lens
2.15728
0.600257
plastic
1.565
58
5.051


3

7.95102
0.580328






4
2nd lens
−4.57617
0.23
plastic
1.64
23.3
−6.067


5

26.12977
0.096215






6
3rd lens
6.53034
0.536917
plastic
1.565
58
9.11


7

−23.5826
0.170061






8
4th lens
2.58441
0.302053
plastic
1.65
21.4
26.419


9

2.9022
0.695806






10
5th lens
17.31457
0.552455
plastic
1.584
40.5
3.881


11

−2.57945
0.526363






12
6th lens
−2.38582
0.354906
plastic
1.65
21.4
−8.424


13

−4.47565
0.200051






14
7th lens
−3.19504
0.352119
plastic
1.565
58
−3.993


15

7.98292
0.3






16
Infrared
plane
0.2
BK_7
1.517
64.2




rays









filter








17

plane
0.136012






18
Image
plane








plane











Reference wavelength (d-line): 587.5 nm.













TABLE 6





Coefficients of the aspheric surfaces






















Surface
2
3
4
5
6
7
8





k
−0.04929
  18.763452
−3.146052
50
11.511117
−50
−8.387968


A4
  3.99752E−03
 −2.65753E−03
−5.38259E−04
4.26480E−04
−1.12976E−02
−5.06681E−03
−4.77471E−03


A6
−3.43914E−05
 −5.82241E−03
−3.27978E−03
7.15484E−03
−1.05403E−02
−8.71238E−03
−1.13776E−03


A8
  3.06709E−03
   3.81493E−03
  2.08987E−03
−1.24014E−03
−1.67228E−03
−1.30073E−03
−3.79868E−05


A10
−1.92345E−03
 −3.58015E−03
−1.95683E−03
1.58148E−03
5.97801E−04
−1.51067E−04
−5.94383E−05


A12









A14





Surface
9
10
11
12
13
14
15





k
−10.084497
−21.814536
−1.977364
−0.189956
−0.012338
−0.236608
−49.681093


A4
 −9.45197E−03
 −1.89927E−02
  2.12693E−03
1.37038E−02
3.06638E−03
2.49475E−03
−4.17639E−03


A6
 −2.52390E−04
   1.40796E−03
  8.09418E−04
−1.01340E−03
−5.02083E−04
4.46483E−04
−8.87102E−04


A8
 −6.25262E−05
 −6.62896E−04
  1.73159E−04
8.89894E−05
−4.41194E−05
2.61112E−05
3.25266E−05


A10
 −3.28088E−05
 −5.77386E−05
  6.40561E−06
4.68212E−05
−9.48040E−07
1.39210E−06
−4.51219E−08


A12

 −4.45309E−06
−1.80035E−06
4.24385E−06
3.32117E−07
2.96859E−08
−2.85078E−08


A14

 −2.11574E−06
−6.35294E−07
−6.87562E−07
7.72687E−08
−9.92819E−09
6.51010E−10









An equation of the aspheric surfaces of the third embodiment is the same as that of the first embodiment, and the definitions are the same as well.
The exact parameters of the third embodiment based on Table 5 and Table 6 are listed in the following table:










Third embodiment (Reference wavelength: 555 nm)




















|f/f1|
|f/f2|
|f/f3|
|f/f4|
|f/f5|
|f/f6|


0.9063
0.7579
0.5024
0.1744
1.1809
0.5460


|f/f7|
Σ PPR
Σ NPR
Σ PPR/|Σ NPR|
IN12/f
IN67/f


1.1463
2.8075
2.4067
1.1666
0.1272
0.0438










|f1/f2|
|f2/f3|
(TP1 + IN12)/TP2
(TP7 + IN67)/TP6


0.4056
1.9490
1.1921
0.9328












HOS
InTL
HOS/HOI
InS/HOS
ODT %
TDT %


0.8363
0.6629
5.1330
1.5558
0.8363
0.6629


HVT61
HVT62
HVT71
HVT72
HVT72/HOI
HVT72/HOS


0.0000
0.0000
0.0000
1.5970
0.4084
0.2740


PLTA
PSTA
NLTA
NSTA
SLTA
SSTA


0.001 mm
0.009 mm
0.004 mm
0.008 mm
0.004 mm
0.005 mm









The figures related to the profile curve lengths obtained based on Table 5 and Table 6 are listed in the following table:










Third embodiment (Reference wavelength: 555 nm)























ARE
ARE − 
2(ARE/

ARE/


ARE
1⁄2(HEP)
value
1⁄2(HEP)
HEP) %
TP
TP (%)





11
1.143
1.208
0.06448
105.64%
0.600
201.18%


12
1.143
1.146
0.00281
100.25%
0.600
190.90%


21
1.143
1.156
0.01290
101.13%
0.230
502.61%


22
1.143
1.145
0.00160
100.14%
0.230
497.70%


31
1.143
1.145
0.00225
100.20%
0.537
213.32%


32
1.143
1.146
0.00299
100.26%
0.537
213.46%


41
1.143
1.161
0.01796
101.57%
0.302
384.39%


42
1.143
1.156
0.01302
101.14%
0.302
382.76%


51
1.143
1.143
0.00007
100.01%
0.552
206.93%


52
1.143
1.174
0.03082
102.70%
0.552
212.49%


61
1.143
1.183
0.03966
103.47%
0.355
333.26%


62
1.143
1.155
0.01191
101.04%
0.355
325.44%


71
1.143
1.167
0.02379
102.08%
0.352
331.39%


72
1.143
1.145
0.00170
100.15%
0.352
325.12%







ARS
ARS − 
(ARS/ 

ARS/TP


ARS
EHD
value
EHD
EHD) %
TP
(%)





11
1.145
1.210
0.065
105.66%
0.600
201.57%


12
1.174
1.177
0.003
100.24%
0.600
196.07%


21
1.227
1.243
0.016
101.34%
0.230
540.59%


22
1.346
1.354
0.008
100.59%
0.230
588.60%


31
1.403
1.405
0.002
100.17%
0.537
261.70%


32
1.552
1.604
0.052
103.36%
0.537
298.78%


41
1.916
1.944
0.028
101.45%
0.302
643.47%


42
2.006
2.028
0.021
101.06%
0.302
671.32%


51
2.033
2.192
0.160
107.86%
0.552
396.81%


52
2.308
2.412
0.104
104.51%
0.552
436.55%


61
2.456
2.721
0.265
110.77%
0.355
766.68%


62
2.845
3.093
0.248
108.73%
0.355
871.59%


71
3.149
3.360
0.211
106.71%
0.352
954.28%


72
3.397
3.852
0.456
113.41%
0.352
1094.01%









The results of the equations of the third embodiment based on Table 5 and Table 6 are listed in the following table:










Values related to the inflection points of the third embodiment


(Reference wavelength: 555 nm)






















HIF121
0.93144
HIF121/HOI
0.23817
SGI121
0.05346
|SGI121|/(|SGI121| + TP1)
0.18861


HIF311
0.76938
HIF311/HOI
0.19673
SGI311
0.04118
|SGI311|/(|SGI311| + TP3)
0.07123


HIF411
1.05305
HIF411/HOI
0.26927
SGI411
0.16459
|SGI411|/(|SGI411| + TP4)
0.35271


HIF421
0.97382
HIF421/HOI
0.24901
SGI421
0.12611
|SGI421|/(|SGI421| + TP4)
0.29454


HIF511
0.50607
HIF511/HOI
0.12940
SGI511
0.00614
|SGI511|/(|SGI511| + TP5)
0.01099


HIF521
1.47052
HIF521/HOI
0.37602
SGI521
−0.36841
|SGI521|/(|SGI521| + TP5)
−2.00172


HIF522
2.16251
HIF522/HOI
0.55296
SGI522
−0.61212
|SGI522|/(|SGI522| + TP5)
10.25959


HIF611
1.91409
HIF611/HOI
0.48944
SGI611
−0.72246
|SGI611|/(|SGI611| + TP6)
1.96558


HIF612
2.33324
HIF612/HOI
0.59661
SGI612
−0.98967
|SGI612|/(|SGI612| + TP6)
1.55912


HIF621
2.56378
HIF621/HOI
0.65556
SGI621
−0.84232
|SGI621|/(|SGI621| + TP6)
1.72814


HIF711
2.11632
HIF711/HOI
0.54115
SGI711
−0.66907
|SGI711|/(|SGI711| + TP7)
2.11097


HIF721
0.91541
HIF721/HOI
0.23407
SGI721
0.04259
|SGI721|/(|SGI721| + TP7)
0.10790









Fourth Embodiment
As shown in FIG. 4A and FIG. 4B, an optical image capturing system 40 of the fourth embodiment of the present invention includes, along an optical axis from an object side to an image side, an aperture 400, a first lens 410, a second lens 420, a third lens 430, a fourth lens 440, a fifth lens 450, a sixth lens 460, a seventh lens 470, an infrared rays filter 480, an image plane 490, and an image sensor 492. FIG. 4C is a transverse aberration diagram at 0.7 field of view of the fourth embodiment of the present application.
The first lens 410 has positive refractive power and is made of plastic. An object-side surface 412 thereof, which faces the object side, is a convex aspheric surface, and an image-side surface 414 thereof, which faces the image side, is a concave aspheric surface. The image-side surface 414 has an inflection point.
The second lens 420 has negative refractive power and is made of plastic. An object-side surface 422 thereof, which faces the object side, is a convex aspheric surface, and an image-side surface 424 thereof, which faces the image side, is a concave aspheric surface. The object-side surface 422 has an inflection point.
The third lens 430 has positive refractive power and is made of plastic. An object-side surface 432 thereof, which faces the object side, is a concave aspheric surface, and an image-side surface 434 thereof, which faces the image side, is a convex aspheric surface. The object-side surface 432 and the image-side surface 434 both have an inflection point.
The fourth lens 440 has negative refractive power and is made of plastic. An object-side surface 442, which faces the object side, is a convex aspheric surface, and an image-side surface 444, which faces the image side, is a concave aspheric surface. The object-side surface 442 and the image-side surface 444 both have two inflection points.
The fifth lens 450 has negative refractive power and is made of plastic. An object-side surface 452, which faces the object side, is a convex aspheric surface, and an image-side surface 454, which faces the image side, is a concave aspheric surface. The object-side surface 452 and the image-side surface 454 both have an inflection point.
The sixth lens 660 has positive refractive power and is made of plastic. An object-side surface 462, which faces the object side, is a concave surface, and an image-side surface 464, which faces the image side, is a convex surface. Whereby, incident angle of each field of view for the sixth lens can be effectively adjusted to improve aberration.
The seventh lens 470 has negative refractive power and is made of plastic. An object-side surface 472, which faces the object side, is a concave surface, and an image-side surface 474, which faces the image side, is a concave surface. It may help to shorten the back focal length to keep small in size. In addition, the object-side surface 472 has two inflection points, and the image-side surface 474 has an inflection point, which may reduce an incident angle of the light of an off-axis field of view and correct the aberration of the off-axis field of view.
The infrared rays filter 480 is made of glass and between the seventh lens 470 and the image plane 490. The infrared rays filter 480 gives no contribution to the focal length of the system.
The optical image capturing system of the second embodiment satisfies |f2|+|f3|+|f4|+|f5|+|f6|=472.6722 mm; |f1|+|f7|=7.1716 mm; and |f2|+|f3|+|f4|+|f5|+|f6|>|f1|+|f7|, where f1 is a focal length of the first lens 410, f2 is a focal length of the second lens 420, f3 is a focal length of the third lens 430, f4 is a focal length of the fourth lens 440, f5 is a focal length of the fifth lens 450, f6 is a focal length of the sixth lens 460, and f7 is a focal length of the seventh lens 470.
The optical image capturing system 40 of the fourth embodiment further satisfies TP6=0.6737 mm; and TP7=0.4780 mm, where TP6 is a central thickness of the sixth lens 460 on the optical axis, TP7 is a central thickness of the seventh lens 470 on the optical axis.
In the fourth embodiment, the optical image capturing system of the fourth embodiment further satisfies ΣPP=17.4258 mm; and f1/ΣPP=0.2264, where ΣPP is a sum of the focal lengths of each positive lens. It is helpful to share the positive refractive power of one single lens to other positive lenses to avoid the significant aberration caused by the incident rays.
The optical image capturing system of the fourth embodiment further satisfies ΣNP=−460.1883 mm; and f2/ΣNP=0.0069, where ΣNP is a sum of the focal lengths of each negative lens. It is helpful to share the negative refractive power of the sixth lens 460 to other negative lenses.
The parameters of the lenses of the fourth embodiment are listed in Table 7 and Table 8.







TABLE 7







f = 4.5913 mm; f/HEP = 2.0; HAF= 40 deg














Radius of curvature
Thickness

Refractive
Abbe
Focal length


Surface
(mm)
(mm)
Material
index
number
(mm)

















0
Object
plane
infinity






1
Aperture
plane
−0.33584






2
1st lens
2.03058
0.590857
plastic
1.565
58
3.9446


3

20.4411
0.095186






4
2nd lens
7.2165
0.23
plastic
1.607
26.6
−5.5279


5

2.2629
0.203986






6
3rd lens
−25.8857
0.366806
plastic
1.565
58
7.4947


7

−3.6578
0.05






8
4th lens
4.82993
0.23
plastic
1.583
30.2
−417.085


9

4.65281
0.05






10
5th lens
4.07572
0.2
plastic
1.607
26.6
−34.3868


11

3.34669
0.787677






12
6th lens
−26.3844
0.673693
plastic
1.565
58
5.9865


13

−3.02569
0.986435






14
7th lens
−2.52419
0.477982
plastic
1.514
56.8
−3.1886


15

4.97372
0.2






16
Infrared
plane
0.2
BK_7
1.517
64.2




rays









filter








17

plane
0.168846






18
Image
plane
−0.01149







plane











Reference wavelength (d-line): 587.5 nm.













TABLE 8





Coefficients of the aspheric surfaces






















Surface
2
3
4
5
6
7
8





k
 −0.191857
  25.98754
−50
 −4.999511
−50
−9.392737
−42.359197


A4
   6.14386E−03
   2.32915E−02
 −2.49806E−02
   4.00683E−03
   3.95467E−02
  2.10900E−02
 −1.42368E−02


A6
 −3.31769E−03
 −1.52625E−02
 −7.01466E−03
 −3.20652E−05
   2.03340E−02
  2.43080E−02
   1.78401E−04


A8
   8.88009E−03
   1.70942E−02
   4.64711E−03
 −3.92503E−03
   7.65770E−03
  9.32984E−03
   5.05797E−04


A10
 −3.39721E−03
 −1.03920E−02
 −3.12460E−03
   2.24376E−03
 −3.18162E−03
  1.06022E−03
   7.36701E−04


A12









A14





Surface
9
10
11
12
13
14
15





k
−47.139839
 −0.966022
 −0.488959
  50
 −5.337175
−0.340205
−50


A4
 −2.47822E−02
 −3.22998E−03
 −2.50181E−03
 −1.24457E−03
 −8.76726E−03
−2.93139E−02
 −1.46251E−02


A6
 −4.09121E−03
 −1.22303E−03
 −4.37624E−04
 −3.09245E−03
 −1.02820E−03
  4.22896E−03
   5.73622E−04


A8
   1.29767E−03
 −5.29555E−04
 −5.19599E−04
 −2.50603E−04
   9.21696E−05
  2.59804E−04
 −1.46156E−04


A10
   1.83292E−03
   8.63712E−05
 −7.53064E−05
   2.58380E−05
   3.49235E−05
  1.81189E−05
   1.04247E−05


A12

   1.13272E−04
   2.62827E−05
 −8.54214E−07
   4.63569E−06
−4.73923E−06
   8.16570E−07


A14

 −5.84875E−05
 −7.62110E−06
 −5.71425E−06
 −1.72555E−06
−4.15107E−08
 −1.42180E−07









An equation of the aspheric surfaces of the fourth embodiment is the same as that of the first embodiment, and the definitions are the same as well.
The exact parameters of the fourth embodiment based on Table 7 and Table 8 are listed in the following table:










Fourth embodiment (Reference wavelength: 555 nm)




















|f/f1|
|f/f2|
|f/f3|
|f/f4|
|f/f5|
|f/f6|


1.1613
0.8291
0.6112
0.0110
0.1333
0.7652


|f/f7|
Σ PPR
Σ NPR
Σ PPR/|Σ NPR|
IN12/f
IN67/f


1.4366
2.0707
2.8769
0.7198
0.0208
0.2154










|f1/f2|
|f2/f3|
(TP1 + IN12)/TP2
(TP7 + IN67)/TP6


0.7139
0.7372
2.9828
2.1737












HOS
InTL
HOS/HOI
InS/HOS
ODT %
TDT %


5.4995
4.9426
1.4065
0.9389
2.0042
0.7448


HVT61
HVT62
HVT71
HVT72
HVT72/HOI
HVT72/HOS


0.0000
0.0000
0.0000
1.3134
0.3359
0.2388


PLTA
PSTA
NLTA
NSTA
SLTA
SSTA


0.005 mm
0.009 mm
0.005 mm
0.001 mm
0.001 mm
0.008 mm









The figures related to the profile curve lengths obtained based on Table 7 and Table 8 are listed in the following table:










Fourth embodiment (Reference wavelength: 555 nm)























ARE
ARE −
2(ARE/HEP)

ARE/


ARE
1⁄2(HEP)
value
1⁄2(HEP)
%
TP
TP (%)





11
1.141
1.215
0.07408
106.49%
0.591
205.59%


12
1.141
1.141
0.00081
100.07%
0.591
193.19%


21
1.141
1.141
0.00038
100.03%
0.230
496.12%


22
1.141
1.171
0.03069
102.69%
0.230
509.29%


31
1.141
1.153
0.01237
101.08%
0.367
314.35%


32
1.141
1.147
0.00675
100.59%
0.367
312.82%


41
1.141
1.143
0.00219
100.19%
0.230
496.90%


42
1.141
1.142
0.00089
100.08%
0.230
496.34%


51
1.141
1.153
0.01206
101.06%
0.200
576.38%


52
1.141
1.161
0.01992
101.75%
0.200
580.31%


61
1.141
1.141
0.00017
100.02%
0.674
169.34%


62
1.141
1.164
0.02336
102.05%
0.674
172.79%


71
1.141
1.196
0.05494
104.82%
0.478
250.14%


72
1.141
1.142
0.00152
100.13%
0.478
238.97%







ARS
ARS − 
(ARS/EHD) 

ARS/TP


ARS
EHD
value
EHD
%
TP
(%)





11
1.194
1.281
0.087
107.28%
0.591
216.75%


12
1.198
1.199
0.001
100.05%
0.591
202.84%


21
1.198
1.199
0.001
100.07%
0.230
521.22%


22
1.235
1.273
0.038
103.10%
0.230
553.63%


31
1.286
1.324
0.038
102.95%
0.367
360.86%


32
1.272
1.303
0.031
102.44%
0.367
355.18%


41
1.346
1.350
0.004
100.27%
0.230
586.95%


42
1.418
1.420
0.002
100.17%
0.230
617.49%


51
1.646
1.670
0.023
101.42%
0.200
834.86%


52
1.811
1.859
0.048
102.66%
0.200
929.51%


61
1.910
1.980
0.070
103.67%
0.674
293.87%


62
2.163
2.333
0.170
107.87%
0.674
346.30%


71
2.583
3.036
0.453
117.53%
0.478
635.17%


72
3.113
3.832
0.719
123.11%
0.478
801.71%









The results of the equations of the fourth embodiment based on Table 7 and Table 8 are listed in the following table:










Values related to the inflection points of the fourth embodiment


(Reference wavelength: 555 nm)






















HIF121
0.95846
HIF121/HOI
0.24506
SGI121
0.03601
|SGI121|/(|SGI121| + TP1)
0.13538


HIF211
0.53133
HIF211/HOI
0.13585
SGI211
0.01628
|SGI211|/(|SGI211| + TP2)
0.06612


HIF311
0.27108
HIF311/HOI
0.06931
SGI311
−0.00120
|SGI311|/(|SGI311| + TP3)
0.00327


HIF321
0.59253
HIF321/HOI
0.15150
SGI321
−0.04181
|SGI321|/(|SGI321| + TP3)
0.12864


HIF411
0.71831
HIF411/HOI
0.18366
SGI411
0.04111
|SGI411|/(|SGI411| + TP4)
0.15164


HIF412
1.05895
HIF412/HOI
0.27075
SGI412
0.06954
|SGI412|/(|SGI412| + TP4)
0.23216


HIF421
0.55698
HIF421/HOI
0.14241
SGI421
0.02664
|SGI421|/(|SGI421| + TP4)
0.10380


HIF422
1.11259
HIF422/HOI
0.28446
SGI422
0.05415
|SGI422|/(|SGI422| + TP4)
0.19056


HIF511
1.26333
HIF511/HOI
0.32300
SGI511
0.18054
|SGI511|/(|SGI511| + TP5)
0.47444


HIF521
1.35764
HIF521/HOI
0.34712
SGI521
0.26306
|SGI521|/(|SGI521| + TP5)
0.56809


HIF711
1.84187
HIF711/HOI
0.47092
SGI711
−0.88157
|SGI711|/(|SGI711| + TP7)
2.18435


HIF712
2.55238
HIF712/HOI
0.65258
SGI712
−1.42068
|SGI712|/(|SGI712| + TP7)
1.50704


HIF721
0.67378
HIF721/HOI
0.17227
SGI721
0.03541
|SGI721|/(|SGI721| + TP7)
0.06898









Fifth Embodiment
As shown in FIG. 5A and FIG. 5B, an optical image capturing system of the fifth embodiment of the present invention includes, along an optical axis from an object side to an image side, an aperture 500, a first lens 510, a second lens 520, a third lens 530, a fourth lens 540, a fifth lens 550, a sixth lens 560, a seventh lens 570, an infrared rays filter 580, an image plane 590, and an image sensor 592. FIG. 5C is a transverse aberration diagram at 0.7 field of view of the fifth embodiment of the present application.
The first lens 510 has positive refractive power and is made of plastic. An object-side surface 512, which faces the object side, is a convex aspheric surface, and an image-side surface 514, which faces the image side, is a concave aspheric surface.
The second lens 520 has negative refractive power and is made of plastic. An object-side surface 522 thereof, which faces the object side, is a convex aspheric surface, and an image-side surface 524 thereof, which faces the image side, is a concave aspheric surface. The object-side surface 522 has an inflection point.
The third lens 530 has positive refractive power and is made of plastic. An object-side surface 532, which faces the object side, is a concave aspheric surface, and an image-side surface 534, which faces the image side, is a convex aspheric surface. The object-side surface 532 and the image-side surface 534 both have an inflection point.
The fourth lens 540 has negative refractive power and is made of plastic. An object-side surface 542, which faces the object side, is a convex aspheric surface, and an image-side surface 544, which faces the image side, is a concave aspheric surface. The object-side surface 542 and the image-side surface 544 both have two inflection points.
The fifth lens 550 has positive refractive power and is made of plastic. An object-side surface 552, which faces the object side, is a convex aspheric surface, and an image-side surface 554, which faces the image side, is a concave aspheric surface. The object-side surface 552 and the image-side surface 554 both have an inflection point.
The sixth lens 560 can have positive refractive power and is made of plastic. An object-side surface 562, which faces the object side, is a convex surface, and an image-side surface 564, which faces the image side, is a convex surface. The object-side surface 562 has an inflection point and the image-side surface 564 has two inflection points. Whereby, incident angle of each field of view for the sixth lens 560 can be effectively adjusted to improve aberration.
The seventh lens 570 has negative refractive power and is made of plastic. An object-side surface 572, which faces the object side, is a concave surface, and an image-side surface 574, which faces the image side, is a concave surface. It may help to shorten the back focal length to keep small in size. In addition, the object-side surface 572 has two inflection points, and the image-side surface 574 has an inflection point, which may reduce an incident angle of the light of an off-axis field of view and correct the aberration of the off-axis field of view.
The infrared rays filter 580 is made of glass and between the seventh lens 570 and the image plane 590. The infrared rays filter 580 gives no contribution to the focal length of the system.
The optical image capturing system of the second embodiment satisfies |f2|+|f3|+|f4|+|f5|+|f6|=116.2046 mm; |f1|+|f7|=6.0808 mm; and |f2|+|f3|+|f4|+|f5|+|f6|>|f1|+|f7|, where f1 is a focal length of the first lens 510, f2 is a focal length of the second lens 520, f3 is a focal length of the third lens 530, f4 is a focal length of the fourth lens 540, f5 is a focal length of the fifth lens 550, f6 is a focal length of the sixth lens 560, and f7 is a focal length of the seventh lens 570.
The optical image capturing system 50 of the fifth embodiment further satisfies TP6=0.5304 mm; and TP7=0.4476 mm, where TP6 is a central thickness of the sixth lens 560 on the optical axis, TP7 is a central thickness of the seventh lens 570 on the optical axis.
In the fifth embodiment, the optical image capturing system of the fifth embodiment further satisfies ΣPP=81.4756 mm; and f1/ΣPP=0.0413, where ΣPP is a sum of the focal lengths of each positive lens. It is helpful to share the positive refractive power of one single lens to other positive lenses to avoid the significant aberration caused by the incident rays.
The optical image capturing system of the fifth embodiment further satisfies ΣNP=−41.2341 mm; and f7/ΣNP=0.0658, where ΣNP is a sum of the focal lengths of each negative lens. It is helpful to share the negative refractive power of one single lens to other negative lenses.
The parameters of the lenses of the fifth embodiment are listed in Table 9 and Table 10.







TABLE 9







f = 4.5869 mm; f/HEP = 2.4; HAF = 36 deg














Radius of curvature
Thickness

Refractive
Abbe
Focal length


Surface
(mm)
(mm)
Material
index
number
(mm)

















0
Object
plane
infinity






1
Aperture
plane
−0.30194






2
1st lens
1.67885
0.502569
plastic
1.565
58
3.3859


3

12.71698
0.05






4
2nd lens
5.38574
0.23
plastic
1.65
21.4
−7.1855


5

2.44192
0.21546






6
3rd lens
−3.31318
0.267964
plastic
1.514
56.8
16.1775


7

−2.43029
0.05






8
4th lens
4.17348
0.23
plastic
1.607
26.6
−31.321


9

3.34488
0.18252






10
5th lens
7.24726
0.204591
plastic
1.65
21.4
56.358


11

8.96491
0.811146






12
6th lens
57.40191
0.530414
plastic
1.514
56.8
6.4721


13

−3.5003
0.628252






14
7th lens
−2.47689
0.447587
plastic
1.514
56.8
−2.7276


15

3.38613
0.2






16
Infrared
plane
0.2
BK_7
1.517
64.2




rays









filter








17

plane
0.2799






18
Image
plane
−0.00199







plane











Reference wavelength (d-line): 587.5 nm.













TABLE 10





Coefficients of the aspheric surfaces






















Surface
2
3
4
5
6
7
8





k
 −0.19498
  25.965245
−24.834588
 −4.835407
−11.460294
−14.363279
−50


A4
   8.68431E−03
   2.06667E−02
 −5.42623E−03
   1.02033E−02
   9.75389E−02
   3.11015E−02
 −6.55395E−02


A6
   2.05199E−03
 −1.55116E−02
 −4.57020E−03
   1.60935E−02
 −5.86134E−03
   8.04270E−02
 −9.07258E−03


A8
   5.46113E−03
   1.50417E−02
 −1.68343E−02
 −2.02109E−02
   1.02915E−01
   1.02785E−02
 −6.61190E−03


A10
 −1.77602E−03
 −6.27543E−03
   1.30266E−02
   1.81509E−02
 −4.33460E−02
   1.56694E−02
   1.72045E−02


A12









A14





Surface
9
10
11
12
13
14
15





k
−31.574844
   9.635245
   8.366551
−50
−22.578376
 −0.421387
−50


A4
 −7.29455E−02
   8.86110E−04
 −9.10165E−04
   3.54135E−02
   3.89278E−02
 −2.57528E−02
 −3.30133E−02


A6
 −5.96674E−03
 −1.23165E−02
   5.36757E−03
 −2.75135E−02
 −1.33720E−02
   4.52341E−03
   4.61348E−03


A8
 −2.29490E−02
 −6.94666E−03
 −2.66396E−03
   5.09075E−03
   3.37191E−04
   2.25092E−04
 −8.64463E−04


A10
   2.11657E−02
   7.53306E−04
 −1.43452E−03
 −9.81173E−04
   8.08761E−05
   8.52708E−06
   3.11316E−05


A12

   3.22496E−03
   8.75091E−04
   5.64122E−05
   5.48106E−06
 −5.52365E−06
   4.27694E−06


A14

 −1.37062E−03
 −1.59640E−04
 −2.87791E−05
 −2.51294E−06
   1.10684E−07
 −6.34271E−07









An equation of the aspheric surfaces of the fifth embodiment is the same as that of the first embodiment, and the definitions are the same as well.
The exact parameters of the fifth embodiment based on Table 9 and Table 10 are listed in the following table:










Fifth embodiment (Reference wavelength: 555 nm)




















|f/f1|
|f/f2|
|f/f3|
|f/f4|
|f/f5|
|f/f6|


1.3582
0.6455
0.2844
0.1476
0.0824
0.7106


|f/f7|
Σ PPR
Σ NPR
Σ PPR/|Σ NPR|
IN12/f
IN67/f


1.6863
2.2988
2.6162
0.8787
0.0109
0.1374










|f1/f2|
|f2/f3|
(TP1 + IN12)/TP2
(TP7 + IN67)/TP6


0.4753
0.4405
2.4025
2.0283












HOS
InTL
HOS/HOI
InS/HOS
ODT %
TDT %


5.0279
4.3505
1.2859
0.9399
2.1286
1.1371


HVT61
HVT62
HVT71
HVT72
HVT72/HOI
HVT72/HOS


1.0956
0.0000
0.0000
1.0598
0.2711
0.2108


PLTA
PSTA
NLTA
NSTA
SLTA
SSTA


0.007 mm
0.008 mm
0.001 mm
−0.002 mm
0.001 mm
0.006 mm









The figures related to the profile curve lengths obtained based on Table 9 and Table 10 are listed in the following table:










Fifth embodiment (Reference wavelength: 555 nm)























ARE
ARE − 
2(ARE/

ARE/


ARE
1⁄2(HEP)
value
1⁄2(HEP)
HEP) %
TP
TP (%)





11
0.953
1.015
0.06197
106.50%
0.503
201.92%


12
0.953
0.954
0.00105
100.11%
0.503
189.80%


21
0.953
0.954
0.00153
100.16%
0.230
414.93%


22
0.953
0.975
0.02214
102.32%
0.230
423.89%


31
0.953
0.959
0.00571
100.60%
0.268
357.70%


32
0.953
0.960
0.00675
100.71%
0.268
358.09%


41
0.953
0.953
0.00016
100.02%
0.230
414.34%


42
0.953
0.954
0.00094
100.10%
0.230
414.67%


51
0.953
0.954
0.00110
100.12%
0.205
466.25%


52
0.953
0.954
0.00119
100.13%
0.205
466.30%


61
0.953
0.952
−0.00051
 99.95%
0.530
179.54%


62
0.953
0.956
0.00274
100.29%
0.530
180.15%


71
0.953
0.982
0.02888
103.03%
0.448
219.33%


72
0.953
0.954
0.00129
100.14%
0.448
213.16%







ARS
ARS − 
(ARS/

ARS/TP


ARS
EHD
value
EHD
EHD) %
TP
(%)





11
0.953
1.015
0.062
106.50%
0.503
201.92%


12
0.964
0.965
0.001
100.10%
0.503
192.00%


21
0.973
0.974
0.001
100.15%
0.230
423.66%


22
0.993
1.019
0.026
102.62%
0.230
442.92%


31
1.017
1.031
0.014
101.36%
0.268
384.72%


32
1.031
1.050
0.019
101.86%
0.268
391.88%


41
1.083
1.083
0.001
100.07%
0.230
470.98%


42
1.194
1.197
0.003
100.25%
0.230
520.37%


51
1.403
1.412
0.009
100.64%
0.205
690.32%


52
1.637
1.642
0.006
100.34%
0.205
802.82%


61
1.877
2.176
0.298
115.90%
0.530
410.17%


62
2.320
2.657
0.336
114.49%
0.530
500.87%


71
2.588
2.983
0.395
115.25%
0.448
666.38%


72
2.736
3.724
0.988
136.11%
0.448
832.09%









The results of the equations of the fifth embodiment based on Table 9 and Table 10 are listed in the following table:










Values related to the inflection points of the fifth embodiment


(Reference wavelength: 555 nm)






















HIF211
0.70612
HIF211/HOI
0.18056
SGI211
0.03977
|SGI211|/(|SGI211| + TP2)
0.14742


HIF212
0.95319
HIF212/HOI
0.24374
SGI212
0.06135
|SGI212|/(|SGI212| + TP2)
0.21058


HIF311
0.42650
HIF311/HOI
0.10906
SGI311
−0.02306
|SGI311|/(|SGI311| + TP3)
0.09415


HIF321
0.47716
HIF321/HOI
0.12201
SGI321
−0.03940
|SGI321|/(|SGI321| + TP3)
−0.17236


HIF411
0.40381
HIF411/HOI
0.10326
SGI411
0.01591
|SGI411|/(|SGI411| + TP4)
0.06471


HIF412
0.97728
HIF412/HOI
0.24990
SGI412
0.01885
|SGI412|/(|SGI412| + TP4)
0.07576


HIF421
0.42045
HIF421/HOI
0.10751
SGI421
0.02150
|SGI421|/(|SGI421| + TP4)
0.08548


HIF422
1.05585
HIF422/HOI
0.26999
SGI422
0.01274
|SGI422|/(|SGI422| + TP4)
0.05249


HIF511
0.75981
HIF511/HOI
0.19429
SGI511
0.03836
|SGI511|/(|SGI511| + TP5)
0.15789


HIF521
1.13304
HIF521/HOI
0.28973
SGI521
0.07512
|SGI521|/(|SGI521| + TP5)
0.26856


HIF611
0.81831
HIF611/HOI
0.20925
SGI611
0.01433
|SGI611|/(|SGI611| + TP6)
0.02631


HIF621
0.64223
HIF621/HOI
0.16422
SGI621
−0.04523
|SGI621|/(|SGI621| + TP6)
−0.09322


HIF622
1.06285
HIF622/HOI
0.27178
SGI622
−0.08716
|SGI622|/(|SGI622| + TP6)
−0.19662


HIF711
1.79916
HIF711/HOI
0.46006
SGI711
−0.80740
|SGI711|/(|SGI711| + TP7)
2.24395


HIF712
2.54267
HIF712/HOI
0.65018
SGI712
−1.32216
|SGI712|/(|SGI712| + TP7)
1.51178


HIF721
0.51270
HIF721/HOI
0.13110
SGI721
0.02939
|SGI721|/(|SGI721| + TP7)
0.06162









Sixth Embodiment
As shown in FIG. 6A and FIG. 6B, an optical image capturing system of the sixth embodiment of the present invention includes, along an optical axis from an object side to an image side, a first lens 610, an aperture 600, a second lens 620, a third lens 630, a fourth lens 640, a fifth lens 650, a seventh lens 660, a seventh lens 670, an infrared rays filter 680, an image plane 690, and an image sensor 692. FIG. 6C is a transverse aberration diagram at 0.7 field of view of the sixth embodiment of the present application.
The first lens 610 has negative refractive power and is made of plastic. An object-side surface 612, which faces the object side, is a concave aspheric surface, and an image-side surface 614, which faces the image side, is a convex aspheric surface. The object-side surface 612 and the image-side surface 614 both have an inflection point.
The second lens 620 has positive refractive power and is made of plastic. An object-side surface 622 thereof, which faces the object side, is a concave aspheric surface, and an image-side surface 624 thereof, which faces the image side, is a convex aspheric surface.
The third lens 630 has negative refractive power and is made of plastic. An object-side surface 632, which faces the object side, is a concave aspheric surface, and an image-side surface 634, which faces the image side, is a convex aspheric surface.
The fourth lens 640 has positive refractive power and is made of plastic. An object-side surface 642, which faces the object side, is a convex aspheric surface, and an image-side surface 644, which faces the image side, is a convex aspheric surface. The object-side surface 642 has an inflection point.
The fifth lens 650 has negative refractive power and is made of plastic. An object-side surface 652, which faces the object side, is a convex aspheric surface, and an image-side surface 654, which faces the image side, is a concave aspheric surface. The object-side surface 652 has two inflection points.
The sixth lens 660 can have positive refractive power and is made of plastic. An object-side surface 662, which faces the object side, is a convex surface, and an image-side surface 664, which faces the image side, is a convex surface. The image-side surface 664 has an inflection point. Whereby, incident angle of each field of view for the sixth lens 660 can be effectively adjusted to improve aberration.
The seventh lens 670 has negative refractive power and is made of plastic. An object-side surface 672, which faces the object side, is a concave surface, and an image-side surface 674, which faces the image side, is a convex surface. It may help to shorten the back focal length to keep small in size. In addition, it may reduce an incident angle of the light of an off-axis field of view and correct the aberration of the off-axis field of view.
The infrared rays filter 680 is made of glass and between the seventh lens 670 and the image plane 690. The infrared rays filter 680 gives no contribution to the focal length of the system.
The optical image capturing system of the second embodiment satisfies |f2|+|f3|+|f4|+|f5|+|f6|=86.3084 mm; and |f1|+|f7|=246.7079 mm, where f1 is a focal length of the first lens 610, f2 is a focal length of the second lens 620, f3 is a focal length of the third lens 630, f4 is a focal length of the fourth lens 640, f5 is a focal length of the fifth lens 650, f6 is a focal length of the sixth lens 660, and f7 is a focal length of the seventh lens 670.
The optical image capturing system 60 of the sixth embodiment further satisfies TP6=1.3445 mm; and TP7=0.2466 mm, where TP6 is a central thickness of the sixth lens 660 on the optical axis, TP7 is a central thickness of the seventh lens 670 on the optical axis.
In the sixth embodiment, The optical image capturing system of the sixth embodiment further satisfies ΣPP=22.6888 mm; and f1/ΣPP=0.3982, where ΣPP is a sum of the focal lengths of each positive lens. It is helpful to share the positive refractive power of one single lens to other positive lenses to avoid the significant aberration caused by the incident rays.
The optical image capturing system of the sixth embodiment further satisfies ΣNP=−310.3275 mm; and f7/ΣNP=0.0181, where ΣNP is a sum of the focal lengths of each negative lens. It is helpful to share the negative refractive power of one single lens to the other negative lenses to avoid the significant aberration caused by the incident rays.
The parameters of the lenses of the sixth embodiment are listed in Table 11 and Table 12.







TABLE 11







f = 4.5959 mm; f/HEP = 1.8; HAF = 40 deg














Radius of curvature
Thickness

Refractive
Abbe
Focal length


Surface
(mm)
(mm)
Material
index
number
(mm)

















0
Object
plane
plane






1
1st lens
−7.63591
0.511837
plastic
1.607
26.6
−241.082


2

−8.26026
0.563369






3
Aperture
plane
0.272998






4
2nd lens
−4.10286
1.24021
plastic
1.565
58
9.0344


5

−2.52281
0.057642






6
3rd lens
−2.43813
0.416132
plastic
1.65
21.4
−57.2659


7

−2.78444
0.05






8
4th lens
4.24762
2.367965
plastic
1.565
58
6.0701


9

−14.2246
0.05






10
5th lens
20.25813
0.2
plastic
1.65
21.4
−6.3537


11

3.41724
0.527712






12
6th lens
9.26516
1.344486
plastic
1.565
58
7.5843


13

−7.5548
1.851024






14
7th lens
−2.69118
0.246626
plastic
1.607
26.6
−5.6257


15

−13.139
0.15






16
Infrared
plane
0.15
BK_7
1.517
64.2




rays









filter








17

plane
−0.01229






18
Image
plane
0.012294







plane











Reference wavelength (d-line): 587.5 nm.













TABLE 12





Coefficients of the aspheric surfaces






















Surface
1
2
4
5
6
7
8





k
−33.312145
−50
−0.332792
  0.043896
−0.093202
  0.285506
−0.380699


A4
   1.26272E−02
   2.03915E−02
  4.18954E−03
  3.10064E−03
2.07007E−04
  1.94950E−03
−1.32802E−03


A6
   1.29612E−03
   1.44214E−03
−4.86569E−03
−1.05746E−03
1.64521E−03
  1.34900E−03
1.29019E−04


A8
 −3.52645E−04
 −3.02866E−05
  7.11820E−04
  1.31428E−04
−5.65034E−05
−1.42647E−05
1.07233E−06


A10
   3.52569E−05
   1.35388E−05
−3.28977E−04
−1.63946E−04
−1.51193E−04
−1.86006E−05
−2.06880E−06


A12









A14





Surface
9
10
11
12
13
14
15





k
  10.93499
  19.290896
−0.0723
  3.233085
−11.778797
  0.194169
−50


A4
 −1.67996E−03
   1.12998E−03
−1.31585E−03
  1.93655E−03
2.30335E−03
  2.04449E−03
1.59526E−03


A6
 −1.31982E−04
 −1.90833E−04
  1.67690E−04
  3.82824E−04
6.90805E−04
  8.69537E−04
−1.68389E−03


A8
 −3.19390E−06
 −3.15177E−05
  4.13457E−05
  1.75911E−05
1.48710E−05
−2.69239E−04
4.04352E−05


A10
   7.41371E−07
 −2.34346E−06
−1.30149E−06
  1.94706E−06
−5.99541E−06
  2.89014E−05
9.78632E−07


A12

   6.20400E−08
−1.68471E−07
  1.15194E−07
−5.61580E−07
  1.71797E−06
−7.92755E−08


A14

   6.93550E−08
−1.77237E−08
  1.45320E−08
1.94347E−07
−7.23500E−07
−1.35502E−08









An equation of the aspheric surfaces of the sixth embodiment is the same as that of the first embodiment, and the definitions are the same as well.
The exact parameters of the sixth embodiment based on Table 11 and Table 12 are listed in the following table:










Sixth embodiment (Reference wavelength: 555 nm)




















|f/f1|
|f/f2|
|f/f3|
|f/f4|
|f/f5|
|f/f6|


0.0191
0.5101
0.0805
0.7587
0.7287
0.6073


|f/f7|
Σ PPR
Σ NPR
Σ PPR/|Σ NPR|
IN12/f
IN67/f


0.8217
2.1138
1.4122
1.4968
0.1822
0.4031










|f1/f2|
|f2/f3|
(TP1 + IN12)/TP2
(TP7 + IN67)/TP6


26.6512 
0.1578
1.0871
1.5602












HOS
InTL
HOS/HOI
InS/HOS
ODT %
TDT %


9.9977
9.7000
2.5570
0.8925
1.3875
1.0553


HVT61
HVT62
HVT71
HVT72
HVT72/HOI
HVT72/HOS


0.0000
2.0012
0.0000
0.0000
0.0000
0.0000


PLTA
PSTA
NLTA
NSTA
SLTA
SSTA


0.002 mm
−0.001 mm
−0.003 mm
0.004 mm
−0.001 mm
0.001 mm









The figures related to the profile curve lengths obtained based on Table 11 and Table 12 are listed in the following table:










Sixth embodiment (Reference wavelength: 555 nm)























ARE

2(ARE/HEP)




ARE
1⁄2(HEP)
value
ARE − 1⁄2(HEP)
%
TP
ARE/TP (%)





11
1.275
1.276
0.00089
100.07%
0.512
249.36%


12
1.275
1.276
0.00047
100.04%
0.512
249.28%


21
1.275
1.299
0.02322
101.82%
1.240
104.71%


22
1.275
1.336
0.06085
104.77%
1.240
107.75%


31
1.275
1.338
0.06271
104.92%
0.416
321.56%


32
1.275
1.322
0.04708
103.69%
0.416
317.81%


41
1.275
1.294
0.01843
101.45%
2.368
54.64%


42
1.275
1.277
0.00179
100.14%
2.368
53.94%


51
1.275
1.276
0.00056
100.04%
0.200
637.99%


52
1.275
1.306
0.03026
102.37%
0.200
652.84%


61
1.275
1.280
0.00463
100.36%
1.344
95.21%


62
1.275
1.279
0.00365
100.29%
1.344
95.13%


71
1.275
1.327
0.05162
104.05%
0.247
538.08%


72
1.275
1.277
0.00138
100.11%
0.247
517.71%







ARS



ARS/TP


ARS
EHD
value
ARS − EHD
(ARS/EHD) %
TP
(%)





11
2.025
2.037
0.012
100.58%
0.512
398.00%


12
1.692
1.705
0.013
100.76%
0.512
333.13%


21
1.342
1.370
0.028
102.09%
1.240
110.45%


22
1.800
2.043
0.242
113.46%
1.240
164.70%


31
1.825
2.057
0.232
112.71%
0.416
494.37%


32
2.061
2.303
0.241
111.71%
0.416
553.36%


41
2.948
3.158
0.210
107.12%
2.368
133.37%


42
2.982
3.073
0.091
103.05%
2.368
129.78%


51
2.752
2.756
0.004
100.16%
0.200
1378.23%


52
2.489
2.794
0.305
112.25%
0.200
1397.10%


61
2.512
2.635
0.124
104.93%
1.344
196.01%


62
2.435
2.446
0.011
100.44%
1.344
181.90%


71
2.434
3.358
0.924
137.97%
0.247
1361.76%


72
3.126
3.722
0.596
119.07%
0.247
1509.09%









The results of the equations of the sixth embodiment based on Table 11 and Table 12 are listed in the following table:










Values related to the inflection points of the sixth embodiment


(Reference wavelength: 555 nm)






















HIF111
0.72939
HIF111/HOI
0.18649
SGI111
−0.02885
|SGI111|/(|SGI111| + TP1)
−0.05973


HIF121
0.58079
HIF121/HOI
0.14849
SGI121
−0.01694
|SGI121|/(|SGI121| + TP1)
−0.01385


HIF411
2.65312
HIF411/HOI
0.67834
SGI411
0.83186
|SGI411|/(|SGI411| + TP4)
0.25997


HIF511
1.72480
HIF511/HOI
0.44099
SGI511
0.07849
|SGI511|/(|SGI511| + TP5)
0.28185


HIF512
2.48375
HIF512/HOI
0.63504
SGI512
0.12469
|SGI512|/(|SGI512| + TP5)
0.38403


HIF621
1.23611
HIF621/HOI
0.31604
SGI621
−0.08685
|SGI621|/(|SGI621| + TP6)
−0.06906









It must be pointed out that the embodiments described above are only some embodiments of the present invention. All equivalent structures which employ the concepts disclosed in this specification and the appended claims should fall within the scope of the present invention.

## Claims

1. An optical image capturing system, in order along an optical axis from an object side to an image side, comprising:
a first lens having positive refractive power;
a second lens having refractive power;
a third lens having refractive power;
a fourth lens having refractive power;
a fifth lens having refractive power;
a sixth lens having refractive power;
a seventh lens having refractive power; and
an image plane;
wherein the optical image capturing system consists of the seven lenses with refractive power; a maximum height for image formation perpendicular to the optical axis on the image plane is denoted as HOI; at least one lens among the second lens to the seventh lens has positive refractive power; the seventh lens has an object-side surface, which faces the object side, and an image-side surface, which faces the image side, and the object-side surface and the image-side surface of the seventh lens are aspheric surfaces;
wherein the optical image capturing system satisfies:


1.2≦f/HEP≦10.0;



0<InTL/HOS<0.9; and



0.9≦2(ARE/HEP)≦1.5;


where f1, f2, f3, f4, f5, f6, and f7 are focal lengths of the first lens to the seventh lens, respectively; f is a focal length of the optical image capturing system; HEP is an entrance pupil diameter of the optical image capturing system; HOS is a distance in parallel with the optical axis from an object-side surface of the first lens to the image plane; InTL is a distance in parallel with the optical axis from the object-side surface of the first lens to the image-side surface of the seventh lens; for any surface of any lens, ARE is a profile curve length measured from a start point where the optical axis passes therethrough, along a surface profile thereof, and finally to a coordinate point of a perpendicular distance where is a half of the entrance pupil diameter away from the optical axis.

2. The optical image capturing system of claim 1, wherein the optical image capturing system further satisfies:


PLTA≦100 μm;



PSTA≦100 μm;



NLTA≦100 μm;



NSTA≦100 μm;



SLTA≦100 μm;



SSTA≦100 μm; and



|TDT|<250%;

where TDT is a TV distortion; HOI is a maximum height for image formation perpendicular to the optical axis on the image plane; PLTA is a transverse aberration at 0.7 HOI on the image plane in the positive direction of a tangential fan of the optical image capturing system after a longest operation wavelength of visible light passing through an edge of the aperture; PSTA is a transverse aberration at 0.7 HOI on the image plane in the positive direction of the tangential fan after a shortest operation wavelength of visible light passing through the edge of the aperture; NLTA is a transverse aberration at 0.7 HOI on the image plane in the negative direction of the tangential fan after the longest operation wavelength of visible light passing through the edge of the aperture; NSTA is a transverse aberration at 0.7 HOI on the image plane in the negative direction of the tangential fan after the shortest operation wavelength of visible light passing through the edge of the aperture; SLTA is a transverse aberration at 0.7 HOI on the image plane of a sagittal fan of the optical image capturing system after the longest operation wavelength of visible light passing through the edge of the aperture; SSTA is a transverse aberration at 0.7 HOI on the image plane of a sagittal fan after the shortest operation wavelength of visible light passing through the edge of the aperture.

3. The optical image capturing system of claim 1, wherein the optical image capturing system further satisfies:


0.9≦ARS/EHD≦2.0;

where, for any surface of any lens, EHD is a maximum effective half diameter thereof, ARS is a profile curve length measured from a start point where the optical axis passes therethrough, along a surface profile thereof, and finally to an end point of the maximum effective half diameter thereof.

4. The optical image capturing system of claim 1, wherein the optical image capturing system further satisfies:


0 mm<HOS≦30 mm.

5. The optical image capturing system of claim 1, wherein the optical image capturing system further satisfies:


0 deg<HAF≦100 deg;

where HAF is a half of a view angle of the optical image capturing system.

6. The optical image capturing system of claim 1, wherein the optical image capturing system further satisfies:


0.05≦ARE71/TP7≦20; and



0.05≦ARE72/TP7≦20;

where ARE71 is a profile curve length measured from a start point where the optical axis passes the object-side surface of the seventh lens, along a surface profile of the object-side surface of the seventh lens, and finally to a coordinate point of a perpendicular distance where is a half of the entrance pupil diameter away from the optical axis; ARE72 is a profile curve length measured from a start point where the optical axis passes the image-side surface of the seventh lens, along a surface profile of the image-side surface of the seventh lens, and finally to a coordinate point of a perpendicular distance where is a half of the entrance pupil diameter away from the optical axis; TP7 is a thickness of the seventh lens on the optical axis.

7. The optical image capturing system of claim 1, wherein the optical image capturing system further satisfies:


0.05≦ARE61/TP6≦20; and



0.05≦ARE62/TP6≦20;

where ARE61 is a profile curve length measured from a start point where the optical axis passes the object-side surface of the sixth lens, along a surface profile of the object-side surface of the sixth lens, and finally to a coordinate point of a perpendicular distance where is a half of the entrance pupil diameter away from the optical axis; ARE62 is a profile curve length measured from a start point where the optical axis passes the image-side surface of the sixth lens, along a surface profile of the image-side surface of the sixth lens, and finally to a coordinate point of a perpendicular distance where is a half of the entrance pupil diameter away from the optical axis; TP6 is a thickness of the sixth lens on the optical axis.

8. The optical image capturing system of claim 1, wherein the first lens has positive refractive power, and the second lens has negative refractive power.

9. The optical image capturing system of claim 1, further comprising an aperture, wherein the optical image capturing system further satisfies:


0.2≦InS/HOS≦1.1;

where InS is a distance in parallel with the optical axis between the aperture and the image plane.

10. An optical image capturing system, in order along an optical axis from an object side to an image side, comprising:
a first lens having positive refractive power;
a second lens having refractive power;
a third lens having refractive power;
a fourth lens having refractive power;
a fifth lens having refractive power;
a sixth lens having refractive power;
a seventh lens having refractive power; and
an image plane;
wherein the optical image capturing system consists of the seven lenses with refractive power; at least a surface each of at least two lenses among the first lens to the seventh lens has at least an inflection point; at least one lens between the second lens and the seventh lens has positive refractive power;
wherein the optical image capturing system satisfies:


1.2≦f/HEP≦10.0;



0<InTL/HOS<0.9; and



0.9≦2(ARE/HEP)≦1.5;


where f1, f2, f3, f4, f5, f6, and f7 are focal lengths of the first lens to the seventh lens, respectively; f is a focal length of the optical image capturing system; HEP is an entrance pupil diameter of the optical image capturing system; HOS is a distance in parallel with the optical axis between an object-side surface, which face the object side, of the first lens and the image plane; InTL is a distance in parallel with the optical axis from the object-side surface of the first lens to the image-side surface of the seventh lens; for any surface of any lens, ARE is a profile curve length measured from a start point where the optical axis passes therethrough, along a surface profile thereof, and finally to a coordinate point of a perpendicular distance where is a half of the entrance pupil diameter away from the optical axis.

11. The optical image capturing system of claim 10, wherein the optical image capturing system further satisfies:


0.9≦ARS/EHD≦2.0;

where, for any surface of any lens, EHD is a maximum effective half diameter thereof, ARS is a profile curve length measured from a start point where the optical axis passes therethrough, along a surface profile thereof, and finally to an end point of the maximum effective half diameter thereof.

12. The optical image capturing system of claim 10, wherein at least a surface of each of at least three lenses among the first lens to the seventh lens has at least an inflection point thereon.

13. The optical image capturing system of claim 10, wherein the optical image capturing system further satisfies:


PLTA≦100 μm;



PSTA≦100 μm;



NLTA≦100 μm;



NSTA≦100 μm;



SLTA≦100 μm;



SSTA≦100 μm; and



HOI>3.0 mm

where HOI is a maximum height for image formation perpendicular to the optical axis on the image plane; PLTA is a transverse aberration at 0.7 HOI on the image plane in the positive direction of a tangential fan of the optical image capturing system after a longest operation wavelength of visible light passing through an edge of the aperture; PSTA is a transverse aberration at 0.7 HOI on the image plane in the positive direction of the tangential fan after a shortest operation wavelength of visible light passing through the edge of the aperture; NLTA is a transverse aberration at 0.7 HOI on the image plane in the negative direction of the tangential fan after the longest operation wavelength of visible light passing through the edge of the aperture; NSTA is a transverse aberration at 0.7 HOI on the image plane in the negative direction of the tangential fan after the shortest operation wavelength of visible light passing through the edge of the aperture; SLTA is a transverse aberration at 0.7 HOI on the image plane of a sagittal fan of the optical image capturing system after the longest operation wavelength of visible light passing through the edge of the aperture; SSTA is a transverse aberration at 0.7 HOI on the image plane of a sagittal fan after the shortest operation wavelength of visible light passing through the edge of the aperture.

14. The optical image capturing system of claim 10, wherein at least one lens among the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, and the seventh lens is a filter, which is capable of filtering out light of wavelengths shorter than 500 nm.

15. The optical image capturing system of claim 10, wherein the optical image capturing system further satisfies:


0<IN12/f≦3.0;

where IN12 is a distance on the optical axis between the first lens and the second lens.

16. The optical image capturing system of claim 10, wherein the optical image capturing system further satisfies:


0<IN67/f≦0.8;

where IN67 is a distance on the optical axis between the sixth lens and the seventh lens.

17. The optical image capturing system of claim 10, wherein the optical image capturing system further satisfies:


0.1≦(TP7+IN67)/TP6≦10;

where IN67 is a distance on the optical axis between the sixth lens and the seventh lens; TP6 is a thickness of the sixth lens on the optical axis; TP7 is a thickness of the seventh lens on the optical axis.

18. The optical image capturing system of claim 10, wherein the optical image capturing system further satisfies:


0.1≦(TP1+IN12)/TP2≦10;

where IN12 is a distance on the optical axis between the first lens and the second lens; TP1 is a thickness of the first lens on the optical axis; TP2 is a thickness of the second lens on the optical axis.

19. The optical image capturing system of claim 10, wherein the optical image capturing system further satisfies:


0<TP4/(IN34+TP4+IN45)<1;

where IN34 is a distance on the optical axis between the third lens and the fourth lens; IN45 is a distance on the optical axis between the fourth lens and the fifth lens; TP4 is a thickness of the fourth lens on the optical axis.

20. An optical image capturing system, in order along an optical axis from an object side to an image side, comprising:
a first lens having positive refractive power;
a second lens having refractive power;
a third lens having refractive power;
a fourth lens having refractive power;
a fifth lens having refractive power;
a sixth lens having refractive power;
a seventh lens having negative refractive power; and
an image plane;
wherein the optical image capturing system consists of the seven lenses having refractive power; a maximum height for image formation perpendicular to the optical axis on the image plane is denoted as HOI; at least a surface of each of at least three lenses among the first lens to the sixth lens has at least an inflection point thereon; both an object-side surface, which faces the object side, and an image-side surface, which faces the image side, of at least one lens among the first lens to the seventh lens are aspheric surfaces;
wherein the optical image capturing system satisfies:


1.2≦f/HEP≦3.5;



0.4≦|tan(HAF)|≦1.5;



0<InTL/HOS<0.9;



HOI>3.0 mm; and



0.9≦2(ARE/HEP)≦1.5;


where f1, f2, f3, f4, f5, f6, and f7 are focal lengths of the first lens to the seventh lens, respectively; f is a focal length of the optical image capturing system; HEP is an entrance pupil diameter of the optical image capturing system; HAF is a half of a view angle of the optical image capturing system; HOS is a distance in parallel with the optical axis between an object-side surface, which face the object side, of the first lens and the image plane; InTL is a distance in parallel with the optical axis from the object-side surface of the first lens to the image-side surface of the seventh lens; for any surface of any lens, ARE is a profile curve length measured from a start point where the optical axis passes therethrough, along a surface profile thereof, and finally to a coordinate point of a perpendicular distance where is a half of the entrance pupil diameter away from the optical axis.

21. The optical image capturing system of claim 20, wherein the optical image capturing system further satisfies:


0.9≦ARS/EHD≦2.0;

where, for any surface of any lens, EHD is a maximum effective half diameter thereof, ARS is a profile curve length measured from a start point where the optical axis passes therethrough, along a surface profile thereof, and finally to an end point of the maximum effective half diameter thereof.

22. The optical image capturing system of claim 20, wherein the optical image capturing system further satisfies:


0 mm<HOS≦30 mm.

23. The optical image capturing system of claim 20, wherein the optical image capturing system further satisfies:


0.05≦ARE71/TP7≦20; and



0.05≦ARE72/TP7≦20;

where ARE71 is a profile curve length measured from a start point where the optical axis passes the object-side surface of the seventh lens, along a surface profile of the object-side surface of the seventh lens, and finally to a coordinate point of a perpendicular distance where is a half of the entrance pupil diameter away from the optical axis; ARE72 is a profile curve length measured from a start point where the optical axis passes the image-side surface of the seventh lens, along a surface profile of the image-side surface of the seventh lens, and finally to a coordinate point of a perpendicular distance where is a half of the entrance pupil diameter away from the optical axis; TP7 is a thickness of the seventh lens on the optical axis.

24. The optical image capturing system of claim 20, wherein the optical image capturing system further satisfies:


0.05≦ARE61/TP6≦20; and



0.05≦ARE62/TP6≦20;

where ARE61 is a profile curve length measured from a start point where the optical axis passes the object-side surface of the sixth lens, along a surface profile of the object-side surface of the sixth lens, and finally to a coordinate point of a perpendicular distance where is a half of the entrance pupil diameter away from the optical axis; ARE62 is a profile curve length measured from a start point where the optical axis passes the image-side surface of the sixth lens, along a surface profile of the image-side surface of the sixth lens, and finally to a coordinate point of a perpendicular distance where is a half of the entrance pupil diameter away from the optical axis; TP6 is a thickness of the sixth lens on the optical axis.

25. The optical image capturing system of claim 20, further comprising an aperture an image sensor, and a driving module, wherein the image sensor is disposed on the image plane; the driving module is coupled with the lenses to move the lenses; the optical image capturing system further satisfies:


0.2≦InS/HOS≦1.1;

where InS is a distance in parallel with the optical axis between the aperture and the image plane.