# 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 generally relates 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). Also, 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 sixth 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. Also, 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 of 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 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, 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.
A modulation transfer function (MTF) graph of an optical image capturing system is used to test and evaluate the contrast and sharpness of the generated images. The vertical axis of the coordinate system of the MTF graph represents the contrast transfer rate, of which the value is between 0 and 1, and the horizontal axis of the coordinate system represents the spatial frequency, of which the unit is cycles/mm or 1 p/mm, i.e., line pairs per millimeter. Theoretically, a perfect optical image capturing system can present all detailed contrast and every line of an object in an image. However, the contrast transfer rate of a practical optical image capturing system along a vertical axis thereof would be less than 1. In addition, peripheral areas in an image would have a poorer realistic effect than a center area thereof has. For visible spectrum, the values of MTF in the spatial frequency of 55 cycles/mm at the optical axis, 0.3 field of view, and 0.7 field of view on an image plane are respectively denoted by MTFE0, MTFE3, and MTFE7; the values of MTF in the spatial frequency of 110 cycles/mm at the optical axis, 0.3 field of view, and 0.7 field of view on an image plane are respectively denoted by MTFQ0, MTFQ3, and MTFQ7; the values of MTF in the spatial frequency of 220 cycles/mm at the optical axis, 0.3 field of view, and 0.7 field of view on an image plane are respectively denoted by MTFH0, MTFH3, and MTFH7; the values of MTF in the spatial frequency of 440 cycles/mm at the optical axis, 0.3 field of view, and 0.7 field of view on the image plane are respectively denoted by MTF0, MTF3, and MTF7. The three aforementioned fields of view respectively represent the center, the inner field of view, and the outer field of view of a lens, and, therefore, can be used to evaluate the performance of an optical image capturing system. If the optical image capturing system provided in the present invention corresponds to photosensitive components which provide pixels having a size no large than 1.12 micrometer, a quarter of the spatial frequency, a half of the spatial frequency (half frequency), and the full spatial frequency (full frequency) of the MTF diagram are respectively at least 110 cycles/mm, 220 cycles/mm and 440 cycles/mm.
If an optical image capturing system is required to be able also to image for infrared spectrum, e.g., to be used in low-light environments, then the optical image capturing system should be workable in wavelengths of 850 nm or 800 nm. Since the main function for an optical image capturing system used in low-light environment is to distinguish the shape of objects by light and shade, which does not require high resolution, it is appropriate to only use spatial frequency less than 110 cycles/mm for evaluating the performance of optical image capturing system in the infrared spectrum. When the aforementioned wavelength of 850 nm focuses on the image plane, the contrast transfer rates (i.e., the values of MTF) in spatial frequency of 55 cycles/mm at the optical axis, 0.3 field of view, and 0.7 field of view on an image plane are respectively denoted by MTFI0, MTFI3, and MTFI7. However, infrared wavelengths of 850 nm or 800 nm are far away from the wavelengths of visible light; it would be difficult to design an optical image capturing system capable of focusing visible and infrared light (i.e., dual-mode) at the same time and achieving certain performance.
The present invention provides an optical image capturing system, which is capable of focusing visible and infrared light (i.e., dual-mode) at the same time and achieving certain performance, wherein the seventh lens thereof 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; and 0.5≦SETP/STP<1;

where f1, f2, f3, f4, f5, f6, and f7 are respectively a focal length 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 between a point on an object-side surface, which face the object side, of the first lens where the optical axis passes through and a point on the image plane where the optical axis passes through; ETP1, ETP2, ETP3, ETP4, ETP5, ETP6, and ETP7 are respectively a thickness in parallel with the optical axis at a height of 1⁄2 HEP of the first lens to the seventh lens, wherein SETP is a sum of the aforementioned ETP1 to ETP7; TP1, TP2, TP3, TP4, TP5, TP6, and TP7 are respectively a thickness at the optical axis of the first lens to the seventh lens, wherein STP is a sum of the aforementioned TP1 to TP7.
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, and the object-side surface and the image-side surface thereof are both aspheric. Each lens 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; HOI>3.0 mm and 0.2≦EIN/ETL<1;

where f1, f2, f3, f4, f5, f6, and f7 are respectively a focal length 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 between a point on an object-side surface, which face the object side, of the first lens where the optical axis passes through and a point on the image plane where the optical axis passes through; ETL is a distance in parallel with the optical axis between a coordinate point at a height of 1⁄2 HEP on the object-side surface of the first lens and the image plane; EIN is a distance in parallel with the optical axis between the coordinate point at the height of 1⁄2 HEP on the object-side surface of the first lens and a coordinate point at a height of 1⁄2 HEP on the image-side surface of the seventh lens.
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 among the object-side surface and the image-side surface of the seventh lens has at least one inflection point thereon. The number of the lenses having refractive power in the optical image capturing system is seven. Each lens of at least two lenses among the first to the sixth lenses have at least an inflection point on at least one surface thereof. 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, and the object-side surface and the image-side surface thereof are both aspheric. The seventh lens has negative refractive power, and the object-side surface and the image-side surface thereof are both aspheric. The optical image capturing system satisfies:

1.2≦f/HEP≦3.5; 0.4≦|tan(HAF)|≦6.0; HOI>3.0 mm; and 0.2≦EIN/ETL<1;

where f1, f2, f3, f4, f5, f6, and f7 are respectively a focal length 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; HAF is a half of the maximum field angle of the optical image capturing system; HOS is a distance between a point on an object-side surface, which face the object side, of the first lens where the optical axis passes through and a point on the image plane where the optical axis passes through; ETL is a distance in parallel with the optical axis between a coordinate point at a height of 1⁄2 HEP on the object-side surface of the first lens and the image plane; EIN is a distance in parallel with the optical axis between the coordinate point at the height of 1⁄2 HEP on the object-side surface of the first lens and a coordinate point at a height of 1⁄2 HEP on the image-side surface of the seventh lens.
For any lens, the thickness at the height of a half of the entrance pupil diameter (HEP) particularly affects the ability of correcting aberration and differences between optical paths of light in different fields of view of the common region of each field of view of light within the covered range at the height of a half of the entrance pupil diameter (HEP). With greater thickness, the ability to correct aberration is better. However, the difficulty of manufacturing increases as well. Therefore, the thickness at the height of a half of the entrance pupil diameter (HEP) of any lens has to be controlled. The ratio between the thickness (ETP) at the height of a half of the entrance pupil diameter (HEP) and the thickness (TP) of any lens on the optical axis (i.e., ETP/TP) has to be particularly controlled. For example, the thickness at the height of a half of the entrance pupil diameter (HEP) of the first lens is denoted by ETP1, the thickness at the height of a half of the entrance pupil diameter (HEP) of the second lens is denoted by ETP2, and the thickness at the height of a half of the entrance pupil diameter (HEP) of any other lens in the optical image capturing system is denoted in the same manner. The optical image capturing system of the present invention satisfies:

0.3≦SETP/EIN<1;

where SETP is the sum of the aforementioned ETP1 to ETP5.
In order to enhance the ability of correcting aberration and to lower the difficulty of manufacturing at the same time, the ratio between the thickness (ETP) at the height of a half of the entrance pupil diameter (HEP) and the thickness (TP) of any lens on the optical axis (i.e., ETP/TP) has to be particularly controlled. For example, the thickness at the height of a half of the entrance pupil diameter (HEP) of the first lens is denoted by ETP1, the thickness of the first lens on the optical axis is TP1, and the ratio between these two parameters is ETP1/TP1; the thickness at the height of a half of the entrance pupil diameter (HEP) of the first lens is denoted by ETP2, the thickness of the second lens on the optical axis is TP2, and the ratio between these two parameters is ETP2/TP2. The ratio between the thickness at the height of a half of the entrance pupil diameter (HEP) and the thickness of any other lens in the optical image capturing system is denoted in the same manner. The optical image capturing system of the present invention satisfies:

0.2≦ETP/TP≦3.

The horizontal distance between two neighboring lenses at the height of a half of the entrance pupil diameter (HEP) is denoted by ED, wherein the aforementioned horizontal distance (ED) is parallel to the optical axis of the optical image capturing system, and particularly affects the ability of correcting aberration and differences between optical paths of light in different fields of view of the common region of each field of view of light at the height of a half of the entrance pupil diameter (HEP). With longer distance, the ability to correct aberration is potential to be better. However, the difficulty of manufacturing increases, and the feasibility of “slightly shorten” the length of the optical image capturing system is limited as well. Therefore, the horizontal distance (ED) between two specific neighboring lenses at the height of a half of the entrance pupil diameter (HEP) has to be controlled.
In order to enhance the ability of correcting aberration and to lower the difficulty of “slightly shorten” the length of the optical image capturing system at the same time, the ratio between the horizontal distance (ED) between two neighboring lenses at the height of a half of the entrance pupil diameter (HEP) and the parallel distance (IN) between these two neighboring lens on the optical axis (i.e., ED/IN) has to be particularly controlled. For example, the horizontal distance between the first lens and the second lens at the height of a half of the entrance pupil diameter (HEP) is denoted by ED12, the horizontal distance between the first lens and the second lens on the optical axis is denoted by IN12, and the ratio between these two parameters is ED12/IN12; the horizontal distance between the second lens and the third lens at the height of a half of the entrance pupil diameter (HEP) is denoted by ED23, the horizontal distance between the second lens and the third lens on the optical axis is denoted by IN23, and the ratio between these two parameters is ED23/IN23. The ratio between the horizontal distance between any two neighboring lenses at the height of a half of the entrance pupil diameter (HEP) and the horizontal distance between these two neighboring lenses on the optical axis is denoted in the same manner.
The horizontal distance in parallel with the optical axis between a coordinate point at the height of 1⁄2 HEP on the image-side surface of the seventh lens and image surface is denoted by EBL. The horizontal distance in parallel with the optical axis between the point on the image-side surface of the seventh lens where the optical axis passes through and the image plane is denoted by BL. To enhance the ability to correct aberration and to preserve more space for other optical components, the optical image capturing system of the present invention can satisfy 0.2≦EBL/BL≦1.1. The optical image capturing system can further include a filtering component, which is provided between the seventh lens and the image plane, wherein the horizontal distance in parallel with the optical axis between the coordinate point at the height of 1⁄2 HEP on the image-side surface of the seventh lens and the filtering component is denoted by EIR, and the horizontal distance in parallel with the optical axis between the point on the image-side surface of the seventh lens where the optical axis passes through and the filtering component is denoted by PIR. The optical image capturing system of the present invention can satisfy 0.1≦EIR/PIR≦1.1.
In an embodiment, a height of the optical image capturing system (HOS) can be reduced while |f1|>|f7|.
In an embodiment, when the lenses satisfy |f2|+|f3|+|f4|+|f5|+|f6| and |f|+|f7|, 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 tune 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 feature map of modulation transformation of the optical image capturing system of the first embodiment of the present application in visible spectrum;
FIG. 1D shows a feature map of modulation transformation of the optical image capturing system of the first embodiment of the present application in infrared spectrum;
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 feature map of modulation transformation of the optical image capturing system of the second embodiment of the present application in visible spectrum;
FIG. 2D shows a feature map of modulation transformation of the optical image capturing system of the second embodiment of the present application in infrared spectrum;
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 feature map of modulation transformation of the optical image capturing system of the third embodiment of the present application in visible spectrum;
FIG. 3D shows a feature map of modulation transformation of the optical image capturing system of the third embodiment of the present application in infrared spectrum;
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 feature map of modulation transformation of the optical image capturing system of the fourth embodiment in visible spectrum;
FIG. 4D shows a feature map of modulation transformation of the optical image capturing system of the fourth embodiment in infrared spectrum;
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 feature map of modulation transformation of the optical image capturing system of the fifth embodiment of the present application in visible spectrum;
FIG. 5D shows a feature map of modulation transformation of the optical image capturing system of the fifth embodiment of the present application in infrared spectrum;
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;
FIG. 6C shows a feature map of modulation transformation of the optical image capturing system of the sixth embodiment of the present application in visible spectrum; and
FIG. 6D shows a feature map of modulation transformation of the optical image capturing system of the sixth embodiment of the present application in infrared spectrum.



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.
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≦ΣNPR|≦15, and a preferable range is 1≦ΣPPR/|ΣNPR|≦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≦|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+A16 h16+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 modulation transformation of the optical image capturing system 10 of the first embodiment of the present application in visible spectrum, and FIG. 1D shows a modulation transformation of the optical image capturing system 10 of the first embodiment of the present application in infrared spectrum.
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 thickness of the first lens 110 on the optical axis is TP1, and a thickness of the first lens 110 at the height of a half of the entrance pupil diameter (HEP) is denoted by ETP1.
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 thickness of the second lens 120 on the optical axis is TP2, and thickness of the second lens 120 at the height of a half of the entrance pupil diameter (HEP) is denoted by ETP2.
The second lens 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 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 thickness of the third lens 130 on the optical axis is TP3, and a thickness of the third lens 130 at the height of a half of the entrance pupil diameter (HEP) is denoted by ETP3.
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 satisfies HIF322=0.92547 mm; HIF322/HOI=0.23651, where 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 thickness of the fourth lens 140 on the optical axis is TP4, and a thickness of the fourth lens 140 at the height of a half of the entrance pupil diameter (HEP) is denoted by ETP4.
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 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 thickness of the fifth lens 150 on the optical axis is TP5, and a thickness of the fifth lens 150 at the height of a half of the entrance pupil diameter (HEP) is denoted by ETP5.
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 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 aspheric surface, and an image-side surface 164, which faces the image side, is a convex aspheric surface. The object-side surface 162 has at least one inflection point. Whereby, the incident angle of each view field entering the sixth lens 160 can be effectively adjusted to improve aberration. A thickness of the sixth lens 160 on the optical axis is TP6, and a thickness of the sixth lens 160 at the height of a half of the entrance pupil diameter (HEP) is denoted by ETP6.
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 aspheric surface, and an image-side surface 174, which faces the image side, is a concave aspheric surface. The image-side surface 174 has an inflection point. A thickness of the seventh lens 170 on the optical axis is TP7, and a thickness of the seventh lens 170 at the height of a half of the entrance pupil diameter (HEP) is denoted by ETP7.
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.
A distance in parallel with the optical axis between a coordinate point at a height of 1⁄2 HEP on the object-side surface of the first lens 110 and the image plane is ETL, and a distance in parallel with the optical axis between the coordinate point at the height of 1⁄2 HEP on the object-side surface of the first lens 110 and a coordinate point at a height of 1⁄2 HEP on the image-side surface of the seventh lens 140 is EIN, which satisfies: ETL=5.660 mm; EIN=5.037 mm; EIN/ETL=0.890.
The optical image capturing system of the first embodiment satisfies: ETP1=0.375 mm; ETP2=0.312 mm; ETP3=0.341 mm; ETP4=0.451 mm; ETP5=0.242 mm; ETP6=0.775 mm; ETP7=0.737 mm. The sum of the aforementioned ETP1 to ETP7 is SETP, wherein SETP=3.232 mm. In addition, TP1=0.669 mm; TP2=0.230 mm; TP3=0.230 mm; TP4=0.558 mm; TP5=0.273 mm; TP6=1.005 mm; TP7=0.281 mm. The sum of the aforementioned TP1 to TP7 is STP, wherein STP=3.247 mm. In addition, SETP/STP=0.995, and SETP/EIN=0.642.
In order to enhance the ability of correcting aberration and to lower the difficulty of manufacturing at the same time, the ratio between the thickness (ETP) at the height of a half of the entrance pupil diameter (HEP) and the thickness (TP) of any lens on the optical axis (i.e., ETP/TP) in the optical image capturing system of the first embodiment is particularly controlled, which satisfies: ETP1/TP1=0.560; ETP2/TP2=1.355; ETP3/TP3=1.481; ETP4/TP4=0.808; ETP5/TP5=0.887; ETP6/TP6=0.771; ETP7/TP7=2.618.
In order to enhance the ability of correcting aberration, lower the difficulty of manufacturing, and “slightly shortening” the length of the optical image capturing system at the same time, the ratio between the horizontal distance (ED) between two neighboring lenses at the height of a half of the entrance pupil diameter (HEP) and the parallel distance (IN) between these two neighboring lens on the optical axis (i.e., ED/IN) in the optical image capturing system of the first embodiment is particularly controlled, which satisfies: the horizontal distance between the first lens 110 and the second lens 120 at the height of a half of the entrance pupil diameter (HEP) is denoted by ED12, wherein ED12=0.156 mm; the horizontal distance between the second lens 120 and the third lens 130 at the height of a half of the entrance pupil diameter (HEP) is denoted by ED23, wherein ED23=0.102 mm; the horizontal distance between the third lens 130 and the fourth lens 140 at the height of a half of the entrance pupil diameter (HEP) is denoted by ED34, wherein ED34=0.077 mm; the horizontal distance between the fourth lens 140 and the fifth lens 150 at the height of a half of the entrance pupil diameter (HEP) is denoted by ED45, wherein ED45=0.255 mm; the horizontal distance between the fifth lens 150 and the sixth lens 160 at the height of a half of the entrance pupil diameter (HEP) is denoted by ED56, wherein ED56=0.608 mm; the horizontal distance between the sixth lens 160 and the seventh lens 170 at the height of a half of the entrance pupil diameter (HEP) is denoted by ED67, wherein ED67=0.607 mm. The sum of the aforementioned ED12 to ED67 is SED, wherein SED=1.806 mm.
The horizontal distance between the first lens 110 and the second lens 120 on the optical axis is denoted by IN12, wherein IN12=0.135 mm, and ED12/IN12=1.155. The horizontal distance between the second lens 120 and the third lens 130 on the optical axis is denoted by IN23, wherein IN23=0.359 mm, and ED23/IN23=0.285. The horizontal distance between the third lens 130 and the fourth lens 140 on the optical axis is denoted by IN34, wherein IN34=0.055 mm, and ED34/IN34=1.401. The horizontal distance between the fourth lens 140 and the fifth lens 150 on the optical axis is denoted by IN45, wherein IN45=0.152 mm, and ED45/IN45=1.681. The horizontal distance between the fifth lens 150 and the sixth lens 160 on the optical axis is denoted by IN56, wherein IN56=0.543 mm, and ED56/IN56=1.121. The horizontal distance between the sixth lens 160 and the seventh lens 170 on the optical axis is denoted by IN67, wherein IN67=0.842 mm, and ED67/IN67=0.721. The sum of the aforementioned IN12 to IN67 is denoted by SIN, wherein SIN=2.086, and SED/SIN=0.866.
The optical image capturing system of the first embodiment satisfies: ED12/ED23=1.527; ED23/ED34=1.331; ED34/ED45=0.301; ED45/ED56=0.420; ED56/ED67=1.002; IN12/IN23=0.377; IN23/IN34=6.541; IN34/IN45=0.361; IN45/IN56=0.280; IN56/IN67=0.644.
The horizontal distance in parallel with the optical axis between a coordinate point at the height of 1⁄2 HEP on the image-side surface of the seventh lens 170 and image surface is denoted by EBL, wherein EBL=0.623 mm. The horizontal distance in parallel with the optical axis between the point on the image-side surface of the seventh lens 170 where the optical axis passes through and the image plane is denoted by BL, wherein BL=0.665 mm. The optical image capturing system of the first embodiment satisfies: EBL/BL=0.9368. The horizontal distance in parallel with the optical axis between the coordinate point at the height of 1⁄2 HEP on the image-side surface of the seventh lens 170 and the infrared rays filter 180 is denoted by EIR, wherein EIR=0.156 mm. The horizontal distance in parallel with the optical axis between the point on the image-side surface of the seventh lens 170 where the optical axis passes through and the infrared rays filter 180 is denoted by PIR, wherein PIR=0.200 mm, and it satisfies: EIR/PIR=0.778.
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 degrees; 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 110-150 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, f6 are local lengths of the first lens 110, the fourth lens 140, the fifth lens 150, and the sixth lens 160 respectively; 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, f7 are the focal length of the second lens 120, the third lens 130, and the seventh lens 170 respectively; 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 the other negative lens, 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; IN45 is a distance on the optical axis between the fourth lens 140 and the fifth lens 150; 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. 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 160; 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 is 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 is 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 is 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 is 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; NA3 is an Abbe number of the third lens 130; 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 optical image capturing system of the first embodiment, the values of MTF in the spatial frequency of 55 cycles/mm at the optical axis, 0.3 field of view, and 0.7 field of view of visible light on an image plane are respectively denoted by MTFE0, MTFE3, and MTFE7, wherein MTFE0 is around 0.9, MTFE3 is around 0.87, and MTEF7 is around 0.85; the values of MTF in the spatial frequency of 110 cycles/mm at the optical axis, 0.3 field of view, and 0.7 field of view of visible light on an image plane are respectively denoted by MTFQ0, MTFQ3, and MTFQ7, wherein MTFQ0 is around 0.77, MTFQ3 is around 0.68, and MTFQ7 is around 0.63; the values of modulation transfer function (MTF) in the spatial frequency of 220 cycles/mm at the optical axis, 0.3 field of view, and 0.7 field of view on an image plane are respectively denoted by MTFH0, MTFH3, and MTFH7, wherein MTFH0 is around 0.57, MTFH3 is around 0.36, and MTFH7 is around 0.3.
For the optical image capturing system of the first embodiment, when the infrared of wavelength of 850 nm focuses on the image plane, the values of MTF in spatial frequency (55 cycles/mm) at the optical axis, 0.3 HOI, and 0.7 HOI on an image plane are respectively denoted by MTFI0, MTFI3, and MTFI7, wherein MTFI0 is around 0.88, MTFI3 is around 0.84, and MTFI7 is around 0.78.
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 curvature
Thickness

Refractive
Abbe
Focal length


Surface
(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 rays filter
plane
0.2
BK_7
1.517
64.2



17

plane
0.267427






18
Image plane
plane





Reference wavelength (d-line): 587.5 mm.













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 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 seventh lens 270, an infrared rays filter 280, an image plane 290, and an image sensor 292. FIG. 2C shows a modulation transformation of the optical image capturing system 20 of the second embodiment of the present application in visible spectrum, and FIG. 2D shows a modulation transformation of the optical image capturing system 20 of the second embodiment of the present application in infrared spectrum.
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 224 surface 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 aspheric surface, and an image-side surface 254, which faces the image side, is a concave aspheric surface. 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 254, which faces the image side, is a convex surface. Whereby, the incident angle of each view field entering the sixth lens 260 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 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 of the second embodiment satisfies TP6=0.9525 mm; and TP7=0.4852 mm, where TP6 is a thickness of the sixth lens 260 on the optical axis, TP7 is a 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 the other positive lens 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 curvature
Thickness

Refractive
Abbe
Focal length


Surface
(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 rays filter
plane
0.2
BK_7
1.517
64.2



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)




















ETP1
ETP2
ETP3
ETP4
ETP5
ETP6


0.258
0.390
0.518 
0.399
0.578
0.566


ETP7
ETL
EBL
EIN
EIR
PIR


1.011
8.006
0.994 
7.012
0.103
0.500


EIN/ETL
SETP/EIN
EIR/PIR
SETP
STP
SETP/STP


0.876
0.531
0.207 
3.720
3.935
0.945


ETP1/TP1
ETP2/TP2
ETP3/TP3
ETP4/TP4
ETP5/TP5
ETP6/TP6


0.534
0.871
2.252 
0.641
0.809
0.594


ETP7/TP7
BL
EBL/BL
SED
SIN
SED/SIN


2.084
1.393
0.7136
3.292
2.670
1.233


ED12
ED23
ED34
ED45
ED56
ED67


0.532
0.338
0.087 
0.486
1.131
0.719


ED12/IN12
ED23/IN23
ED34/IN34
ED45/IN45
ED56/IN56
ED67/IN67


10.643 
0.393
0.754 
9.711
0.948
1.782


|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|
ΣPPR
ΣNPR
ΣPPR/|ΣNPR|
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


MTFE0
MTFE3
MTFE7
MTFQ0
MTFQ3
MTFQ7


0.93 
0.87 
0.84 
0.82 
0.68 
0.63 


MTFI0
MTFI3
MTFI7


0.72 
0.64 
0.47 









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/HOI
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 shows a modulation transformation of the optical image capturing system 30 of the third embodiment of the present application in visible spectrum, and FIG. 3D shows a modulation transformation of the optical image capturing system 30 of the third embodiment of the present application in infrared spectrum.
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 aspheric 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 aspheric surface, and an image-side surface 354, which faces the image side, is a convex 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 352 has two inflection points, and the image-side surface 364 has an inflection point. Whereby, the incident angle of each view field entering the sixth lens 360 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 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 of the second embodiment satisfies TP6=0.3549 mm; and TP7=0.3521 mm, where TP6 is a thickness of the sixth lens 360 on the optical axis, TP7 is a 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 the other negative lens.
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 curvature
Thickness

Refractive
Abbe
Focal length


Surface
(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 rays filter
plane
0.2
BK_7
1.517
64.2



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)




















ETP1
ETP2
ETP3
ETP4
ETP5
ETP6


0.338
0.423
0.411 
0.275
0.311
0.477


ETP7
ETL
EBL
EIN
EIR
PIR


0.615
5.499
0.577 
4.922
0.241
0.300


EIN/ETL
SETP/EIN
EIR/PIR
SETP
STP
SETP/STP


0.895
0.579
0.804 
2.850
2.929
0.973


ETP1/TP1
ETP2/TP2
ETP3/TP3
ETP4/TP4
ETP5/TP5
ETP6/TP6


0.564
1.838
0.765 
0.911
0.563
1.343


ETP7/TP7
BL
EBL/BL
SED
SIN
SED/SIN


1.747
0.631
0.9144
2.072
2.269
0.913


ED12
ED23
ED34
ED45
ED56
ED67


0.360
0.118
0.416 
0.542
0.496
0.140


ED12/IN12
ED23/IN23
ED34/IN34
ED45/IN45
ED56/IN56
ED67/IN67


0.620
1.228
2.444 
0.779
0.943
0.700


|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|
ΣPPR
ΣNPR
ΣPPR/|ΣNPR|
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


MTFE0
MTFE3
MTFE7
MTFQ0
MTFQ3
MTFQ7


0.86 
0.85 
0.8  
0.66 
0.63 
0.54 


MTFI0
MTFI3
MTFI7


0.69 
0.67 
0.55 









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 shows a modulation transformation of the optical image capturing system 40 of the fourth embodiment of the present application in visible spectrum, and FIG. 4D shows a modulation transformation of the optical image capturing system 40 of the fourth embodiment of the present application in infrared spectrum.
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 460 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, the incident angle of each view field entering the sixth lens 460 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 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 of the second embodiment satisfies TP6=0.6737 mm; and TP7=0.4780 mm, where TP6 is a thickness of the sixth lens 460 on the optical axis, TP7 is a 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 the other negative lens.
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 rays filter
plane
0.2
BK_7
1.517
64.2



17

plane
0.168846






18
Image plane
plane
−0.01149





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)




















ETP1
ETP2
ETP3
ETP4
ETP5
ETP6


0.280
0.455
0.238 
0.209
0.240
0.503


ETP7
ETL
EBL
EIN
EIR
PIR


0.851
5.132
0.482 
4.649
0.133
0.200


EIN/ETL
SETP/EIN
EIR/PIR
SETP
STP
SETP/STP


0.906
0.597
0.667 
2.775
2.769
1.002


ETP1/TP1
ETP2/TP2
ETP3/TP3
ETP4/TP4
ETP5/TP5
ETP6/TP6


0.473
1.979
0.649 
0.907
1.200
0.746


ETP7/TP7
BL
EBL/BL
SED
SIN
SED/SIN


1.781
0.557
0.8654
1.875
2.173
0.863


ED12
ED23
ED34
ED45
ED56
ED67


0.063
0.060
0.158 
0.146
0.562
0.886


ED12/IN12
ED23/IN23
ED34/IN34
ED45/IN45
ED56/IN56
ED67/IN67


0.661
0.293
3.153 
2.919
0.714
0.898


|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|
ΣPPR
ΣNPR
ΣPPR/|ΣNPR|
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


MTFE0
MTFE3
MTFE7
MTFQ0
MTFQ3
MTFQ7


0.9 
0.87 
0.8  
0.78 
0.68 
0.49 


MTFI0
MTFI3
MTFI7


0.84 
0.77 
0.74 









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 shows a modulation transformation of the optical image capturing system 50 of the fifth embodiment of the present application in visible spectrum, and FIG. 5D shows a modulation transformation of the optical image capturing system 50 of the fifth embodiment of the present application in infrared spectrum.
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 two inflection points.
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 has 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, the incident angle of each view field entering 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 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 of the second embodiment satisfies TP6=0.5304 mm; and TP7=0.4476 mm, where TP6 is a thickness of the sixth lens 560 on the optical axis, TP7 is a 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/ΣP=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 the other negative lens.
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 rays filter
plane
0.2
BK_7
1.517
64.2



17

plane
0.2799






18
Image plane
plane
−0.00199





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)




















ETP1
ETP2
ETP3
ETP4
ETP5
ETP6


0.250
0.351
0.231 
0.237
0.203
0.434


ETP7
ETL
EBL
EIN
EIR
PIR


0.712
4.726
0.619 
4.108
0.141
0.200


EIN/ETL
SETP/EIN
EIR/PIR
SETP
STP
SETP/STP


0.869
0.589
0.704 
2.418
2.413
1.002


ETP1/TP1
ETP2/TP2
ETP3/TP3
ETP4/TP4
ETP5/TP5
ETP6/TP6


0.497
1.527
0.862 
1.030
0.994
0.818


ETP7/TP7
BL
EBL/BL
SED
SIN
SED/SIN


1.590
0.677
0.9143
1.690
1.937
0.872


ED12
ED23
ED34
ED45
ED56
ED67


0.062
0.036
0.104 
0.209
0.777
0.500


ED12/IN12
ED23/IN23
ED34/IN34
ED45/IN45
ED56/IN56
ED67/IN67


1.248
0.168
2.084 
1.146
0.958
0.796


|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|
ΣPPR
ΣNPR
ΣPPR/|ΣNPR|
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


MTFE0
MTFE3
MTFE7
MTFQ0
MTFQ3
MTFQ7


0.88 
0.87 
0.8  
0.77 
0.73 
0.55 


MTFI0
MTFI3
MTFI7


0.83 
0.8 
0.74 









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, an aperture 600, a first lens 610, a second lens 620, a third lens 630, a fourth lens 640, a fifth lens 650, a sixth lens 660, a seventh lens 670, an infrared rays filter 680, an image plane 690, and an image sensor 692. FIG. 6C shows a modulation transformation of the optical image capturing system 60 of the sixth embodiment of the present application in visible spectrum, and FIG. 6D shows a modulation transformation of the optical image capturing system 60 of the sixth embodiment of the present application in infrared spectrum.
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 has 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, the incident angle of each view field entering 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 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 of the second embodiment satisfies TP6=1.3445 mm; and TP7=0.2466 mm, where TP6 is a thickness of the sixth lens 660 on the optical axis, TP7 is a thickness of the seventh lens 670 on the optical axis.
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 lens 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 rays filter
plane
0.15
BK_7
1.517
64.2



17

plane
−0.01229






18
Image plane
plane
0.012294





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)




















ETP1
ETP2
ETP3
ETP4
ETP5
ETP6


0.545
1.106
0.464 
2.113
0.401
1.157


ETP7
ETL
EBL
EIN
EIR
PIR


0.506
10.050 
0.356 
9.694
0.209
0.150


EIN/ETL
SETP/EIN
EIR/PIR
SETP
STP
SETP/STP


0.965
0.649
1.392 
6.291
6.327
0.994


ETP1/TP1
ETP2/TP2
ETP3/TP3
ETP4/TP4
ETP5/TP5
ETP6/TP6


1.065
0.892
1.114 
0.892
2.004
0.860


ETP7/TP7
BL
EBL/BL
SED
SIN
SED/SIN


2.052
0.298
1.1946
3.403
3.373
1.009


ED12
ED23
ED34
ED45
ED56
ED67


0.646
0.050
0.546 
0.157
0.380
1.624


ED12/IN12
ED23/IN23
ED34/IN34
ED45/IN45
ED56/IN56
ED67/IN67


0.772
0.876
10.912 
3.131
0.721
0.877


|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|
ΣPPR
ΣNPR
ΣPPR/|ΣNPR|
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


MTFE0
MTFE3
MTFE7
MTFQ0
MTFQ3
MTFQ7


0.92 
0.88 
0.87 
0.63 
0.41 
0.39 


MTFI0
MTFI3
MTFI7


0.89 
0.85 
0.75 









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 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 first to the seventh lenses has positive refractive power; each lens of the first to the seventh lenses has an object-side surface, which faces the object side, and an image-side surface, which faces the image side;
wherein the optical image capturing system satisfies:


1.2≦f/HEP≦10.0; and



0.5≦SETP/STP<1;


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 a point on an object-side surface of the first lens where the optical axis passes through and a point on the image plane where the optical axis passes through; ETP1, ETP2, ETP3, ETP4, ETP5, ETP6, and ETP7 are respectively a thickness at the height of 1⁄2 HEP of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, and the seventh lens; SETP is a sum of the aforementioned ETP1 to ETP7; TP1, TP2, TP3, TP4, TP5, TP6, and TP7 are respectively a thickness of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, and the seventh lens on the optical axis; STP is a sum of the aforementioned TP1 to TP7.

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


0.2≦EIN/ETL<1;

where ETL is a distance in parallel with the optical axis between a coordinate point at a height of 1⁄2 HEP on the object-side surface of the first lens and the image plane; EIN is a distance in parallel with the optical axis between the coordinate point at the height of 1⁄2 HEP on the object-side surface of the first lens and a coordinate point at a height of 1⁄2 HEP on the image-side surface of the seventh lens.

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


0.3≦SETP/EIN<1.

4. The optical image capturing system of claim 1, further comprising a filtering component provided between the seventh lens and the image plane, wherein the optical image capturing system further satisfies:


0.1≦EIR/PIR≦1.1;

where EIR is a horizontal distance in parallel with the optical axis between a coordinate point at the height of 1⁄2 HEP on the image-side surface of the seventh lens and the filtering component; PIR is a horizontal distance in parallel with the optical axis between a point on the image-side surface of the seventh lens where the optical axis passes through and the filtering component.

5. The optical image capturing system of claim 1, wherein at least one lens among the first to the seventh lenses has at least one inflection point on either the object-side surface or the image-side surface thereof.

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


MTFE0≧0.2;



MTFE3≧0.01; and



MTFE7≧0.01;

where MTFE0, MTFE3, and MTFE7 are respectively a value of modulation transfer function of visible light in a spatial frequency of 55 cycles/mm at the optical axis, 0.3 HOI, and 0.7 HOI on an image plane.

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


0.4≦|tan(HAF)|≦6.0;

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

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


0.1≦EBL/BL≦1.1;

where EBL is a horizontal distance in parallel with the optical axis between a coordinate point at the height of 1⁄2 HEP on the image-side surface of the seventh lens and the image plane; BL is a horizontal distance in parallel with the optical axis between the point on the image-side surface of the seventh lens where the optical axis passes through and the image plane.

9. The optical image capturing system of claim 1, further comprising an aperture and an image sensor, wherein the image sensor is provided on the image plane; the optical image capturing system further satisfies:


0.1≦InS/HOS≦1.1; and



0≦HIF/HOI≦0.9;

where InS is a distance in parallel with the optical axis between the aperture and the image plane; HIF is a distance perpendicular to the optical axis between any inflection point and the optical axis.

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; 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 to the seventh lenses has positive refractive power; each lens among the first to the seventh lenses has an object-side surface, which faces the object side, and an image-side surface, which faces the image side;
wherein the optical image capturing system satisfies:


1.2≦f/HEP≦10.0;



HOI>3.0 mm; and



0.2≦EIN/ETL<1;


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 a point on an object-side surface of the first lens where the optical axis passes through and a point on the image plane where the optical axis passes through; ETL is a distance in parallel with the optical axis between a coordinate point at a height of 1⁄2 HEP on the object-side surface of the first lens and the image plane; EIN is a distance in parallel with the optical axis between the coordinate point at the height of 1⁄2 HEP on the object-side surface of the first lens and a coordinate point at a height of 1⁄2 HEP on the image-side surface of the seventh lens.

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


0<ED67/IN67≦50;

where ED67 is a horizontal distance between the sixth lens and the seventh lens at the height of 1⁄2 HEP; IN67 is a horizontal distance between the sixth lens and the seventh lens on the optical axis.

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


0<ED12/IN12<15;

where ED12 is a horizontal distance between the first lens and the second lens at the height of 1⁄2 HEP; IN12 is a horizontal distance between the first lens and the second lens on the optical axis.

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


0<ETP2/TP≦23;

where ETP2 is a thickness of the second lens at the height of 1⁄2 HEP in parallel with the optical axis; TP2 is a thickness of the second lens on the optical axis.

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


0<ETP6/TP6≦3;

where ETP6 is a thickness of the sixth lens at the height of 1⁄2 HEP in parallel with the optical axis; TP6 is a thickness of the sixth lens on the optical axis.

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


0<ETP7/TP7≦5;

where ETP7 is a thickness of the seventh lens at the height of 1⁄2 HEP in parallel with the optical axis; TP7 is a thickness of the seventh lens on the optical axis.

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


0<IN12/f≦60;

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

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


MTFI0≧0.01;



MTFI3≧0.01; and



MTFI7≧0.01;

where MTFI0, MTFI3, and MTFI7 are respectively values of modulation transfer function for an infrared of wavelength of 850 nm in a spatial frequency of 55 cycles/mm at the optical axis, 0.3 HOI, and 0.7 HOI on the image plane.

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


MTFQ0≧0.2;



MTFQ3≧0.01; and



MTFQ7≧0.01

where HOI is a maximum height for image formation perpendicular to the optical axis on the image plane; MTFQ0, MTFQ3, and MTFQ7 are respectively values of modulation transfer function of visible light in a spatial frequency of 110 cycles/mm at the optical axis, 0.3 HOI, and 0.7 HOI on the image plane.

19. The optical image capturing system of claim 10, wherein at least one lens among the first lens to the seventh lens is a light filter, which is capable of filtering out light of wavelengths shorter than 500 nm.

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 negative 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 seventh 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 one surface of at least one lens among the first lens to the seventh lenses has at least two inflection points thereon; each lens of the first to the seventh lenses has an object-side surface, which faces the object side, and an image-side surface, which faces the image side; the object-side surface and the image-side surface of at least one lens among the first lens to the seventh lens are both aspheric surfaces;
wherein the optical image capturing system satisfies:


1.2≦f/HEP≦3.5;



0.4≦|tan(HAF)|≦6.0;



HOI>3.0 mm; and



0.2EIN/ETL<1;


where f1, f2 f3, 14, f5, f6, and 17 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 between a point on an object-side surface of the first lens where the optical axis passes through and a point on the image plane where the optical axis passes through; ETL is a distance in parallel with the optical axis between a coordinate point at a height of 1⁄2 HEP on the object-side surface of the first lens and the image plane; EIN is a distance in parallel with the optical axis between the coordinate point at the height of 1⁄2 HEP on the object-side surface of the first lens and a coordinate point at a height of 1⁄2 HEP on the image-side surface of the seventh lens.

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


0.1≦EBL/BL≦1.1;

where EBL is a horizontal distance in parallel with the optical axis between a coordinate point at the height of 1⁄2 HEP on the image-side surface of the seventh lens and the image plane; BL is a horizontal distance in parallel with the optical axis between the point on the image-side surface of the seventh lens where the optical axis passes through and the image plane.

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


0<ED67/IN67≦50;

where ED67 is a horizontal distance between the sixth lens and the seventh lens at the height of 1⁄2 HEP; IN67 is a horizontal distance between the sixth lens and the seventh lens on the optical axis.

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


0<IN67/f≦5.0;

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

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


0 mm<HOS≦50 mm.

25. The optical image capturing system of claim 23, 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:


0.1≦InS/HOS≦1.1;

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