Optical image capturing system

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 have negative refractive force, wherein both surfaces thereof can be 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 imagining quality for use in compact cameras.

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 C51on 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 C52on 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 C61on 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 C62on 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 IF711which is nearest to the optical axis, and the sinkage value of the inflection point IF711is denoted by SGI711(instance). A distance perpendicular to the optical axis between the inflection point IF711and the optical axis is HIF711(instance). The image-side surface of the seventh lens has one inflection point IF721which is nearest to the optical axis, and the sinkage value of the inflection point IF721is denoted by SGI721(instance). A distance perpendicular to the optical axis between the inflection point IF721and the optical axis is HIF721(instance).

The object-side surface of the seventh lens has one inflection point IF712which is the second nearest to the optical axis, and the sinkage value of the inflection point IF712is denoted by SGI712(instance). A distance perpendicular to the optical axis between the inflection point IF712and the optical axis is HIF712(instance). The image-side surface of the seventh lens has one inflection point IF722which is the second nearest to the optical axis, and the sinkage value of the inflection point IF722is denoted by SGI722(instance). A distance perpendicular to the optical axis between the inflection point IF722and the optical axis is HIF722(instance).

The object-side surface of the seventh lens has one inflection point IF713which is the third nearest to the optical axis, and the sinkage value of the inflection point IF713is denoted by SGI713(instance). A distance perpendicular to the optical axis between the inflection point IF713and the optical axis is HIF713(instance). The image-side surface of the seventh lens has one inflection point IF723which is the third nearest to the optical axis, and the sinkage value of the inflection point IF723is denoted by SGI723(instance). A distance perpendicular to the optical axis between the inflection point IF723and the optical axis is HIF723(instance).

The object-side surface of the seventh lens has one inflection point IF714which is the fourth nearest to the optical axis, and the sinkage value of the inflection point IF714is denoted by SGI714(instance). A distance perpendicular to the optical axis between the inflection point IF714and the optical axis is HIF714(instance). The image-side surface of the seventh lens has one inflection point IF724which is the fourth nearest to the optical axis, and the sinkage value of the inflection point IF724is denoted by SGI724(instance). A distance perpendicular to the optical axis between the inflection point IF724and 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 lp/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 imagining 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. At least one lens among the first lens to the seventh lens is made of glass. The optical image capturing system satisfies:
1.0≦f/HEP≦10.0; 0 deg<HAF≦150 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 the object-side surface of the first lens and the image plane; InTL is a distance from the object-side surface of the first lens to the image-side surface of the seventh lens on the optical axis; HAF is a half of the maximum field angle of the optical image capturing system; ETL is a distance in parallel with the optical axis between a coordinate point at a height of ½ 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 ½ HEP on the object-side surface of the first lens and a coordinate point at a height of ½ 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 lens among the first lens to the seventh lens is made of glass. The optical image capturing system has a maximum height HOI for image formation on the image plane. Each lens of at least one lens among the first to the seventh lenses has at least an inflection point on at least one surface thereof. At least one lens among the second lens to the seventh lens has positive refractive power. 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 refractive power, and an object-side surface and an image-side surface thereof are both aspheric. The optical image capturing system satisfies:
1.0≦f/HEP≦10.0; 0 deg<HAF≦150; 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 the object-side surface of the first lens and the image plane; InTL is a distance from the object-side surface of the first lens to the image-side surface of the seventh lens on the optical axis; HAF is a half of the maximum field angle of the optical image capturing system; ETL is a distance in parallel with the optical axis between a coordinate point at a height of ½ 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 ½ HEP on the object-side surface of the first lens and a coordinate point at a height of ½ 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. The number of the lenses having refractive power in the optical image capturing system is seven. One lens among the first lens to the seventh lens is made of glass, while the other six lenses are made of plastic. At least one lens among the second lens to the fourth lens has positive refractive power. At least one lens among the fifth lens to the seventh lens has positive refractive power. The optical image capturing system has a maximum height HOI for image formation on the image plane. The first lens has negative 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. The seventh lens has refractive power. The optical image capturing system satisfies:
1.0≦f/HEP≦6.0; 0 deg<HAF≦100 deg; 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; InTL is a distance from the object-side surface of the first lens to the image-side surface of the seventh lens on the optical axis; HAF is a half of the maximum field angle of the optical image capturing system; ETL is a distance in parallel with the optical axis between a coordinate point at a height of ½ 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 ½ HEP on the object-side surface of the first lens and a coordinate point at a height of ½ 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 ETP1to 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 ½ 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 ½ 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.

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 |f1|−|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.

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. Image heights in the following embodiments are all almost 3.91 mm.

The optical image capturing system can work in three wavelengths, including 486.1 nm, 587.5 nm, and 656.2 nm, wherein 587.5 nm is the main reference wavelength and is the reference wavelength for obtaining the technical characters. The optical image capturing system can also work in five wavelengths, including 470 nm, 510 nm, 555 nm, 610 nm, and 650 nm wherein 555 nm is the main reference wavelength, and is the reference wavelength for obtaining the technical characters.

The optical image capturing system of the present invention satisfies 0.5≦ΣPPR/|ΣNPR|≦15, and a preferable range is 1≦ΣPPR/|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 R1is a radius of curvature of the object-side surface of the first lens, and R2is 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 R13is a radius of curvature of the object-side surface of the seventh lens, and R14is 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 IN12f≦3.0, where IN12is 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 IN67is 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 TP1is a central thickness of the first lens on the optical axis, and TP2is 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 TP6is a central thickness of the sixth lens on the optical axis, TP7is a central thickness of the seventh lens on the optical axis, and IN67is 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 TP3is a central thickness of the third lens on the optical axis, TP4is a central thickness of the fourth lens on the optical axis, TP5is a central thickness of the fifth lens on the optical axis, IN34is a distance on the optical axis between the third lens and the fourth lens, IN45is 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 HVT71a distance perpendicular to the optical axis between the critical point C71on the object-side surface of the seventh lens and the optical axis; HVT72a distance perpendicular to the optical axis between the critical point C72on the image-side surface of the seventh lens and the optical axis; SGC71is 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; SGC72is 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 SGI711is 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 SGI721is 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 SGI712is 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 SGI722is 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 HIF711is 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; HIF721is 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 HIF712is 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; HIF722is 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 HIF713is 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; HIF723is 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 HIF714is 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; HIF724is 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.

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 A20are 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.

To meet different requirements, the image plane of the optical image capturing system in the present invention can be either flat or curved. If the image plane is curved (e.g., a sphere with a radius of curvature), the incidence angle required for focusing light on the image plane can be decreased, which is not only helpful to shorten the length of the system (TTL), but also helpful to increase the relative illuminance.

We provide several embodiments in conjunction with the accompanying drawings for the best understanding, which are:

As shown inFIG. 1AandFIG. 1B, an optical image capturing system10of the first embodiment of the present invention includes, along an optical axis from an object side to an image side, a first lens110, an aperture100, a second lens120, a third lens130, a fourth lens140, a fifth lens150, a sixth lens160, a seventh lens170, an infrared rays filter180, an image plane190, and an image sensor192.FIG. 1Cshows a modulation transformation of the optical image capturing system10of the first embodiment of the present application in visible spectrum.

The first lens110has negative refractive power and is made of plastic. An object-side surface112thereof, which faces the object side, is a concave aspheric surface, and an image-side surface114thereof, which faces the image side, is a concave aspheric surface. The object-side surface112has an inflection point, and the image-side surface114has two inflection points. A thickness of the first lens110on the optical axis is TP1, and a thickness of the first lens110at the height of a half of the entrance pupil diameter (HEP) is denoted by ETP1.

The first lens satisfies SGI111=−0.1110 mm; SGI121=2.7120 mm; TP1=2.2761 mm; |SGI111|/(|SGI111|+TP1)=0.0465; |SGI121|/(|SGI121|+TP1)=0.5437, where a displacement in parallel with the optical axis from a point on the object-side surface of the first 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 SGI111, and a displacement in parallel with the optical axis from a point on the image-side surface of the first 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 SGI111.

The first lens satisfies SGI112=0 mm; SGI122=4.2315 mm; |SGI112|/(|SGI112|+TP1)=0; |SGI122|/(|SGI122|+TP1)=0.6502, where a displacement in parallel with the optical axis from a point on the object-side surface of the first 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 is denoted by SGI112, and a displacement in parallel with the optical axis from a point on the image-side surface of the first 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 is denoted by SGI122.

The first lens satisfies HIF112=0 mm; HIF112/HOI=0; HIF122=9.8592 mm; HIF122/HOI=1.3147, where a displacement perpendicular to the optical axis from a point on the object-side surface of the first lens, through which the optical axis passes, to the inflection point, which is the second closest to the optical axis is denoted by HIF112, and a displacement perpendicular to the optical axis from a point on the image-side surface of the first lens, through which the optical axis passes, to the inflection point, which is the second closest to the optical axis is denoted by HIF122.

The second lens120has positive refractive power and is made of plastic. An object-side surface122thereof, which faces the object side, is a convex aspheric surface, and an image-side surface124thereof, which faces the image side, is a concave aspheric surface. A thickness of the second lens120on the optical axis is TP2, and thickness of the second lens120at the height of a half of the entrance pupil diameter (HEP) is denoted by ETP2.

For the second lens, 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.

For the second lens, 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 lens130has negative refractive power and is made of plastic. An object-side surface132, which faces the object side, is a convex aspheric surface, and an image-side surface134, which faces the image side, is a concave aspheric surface. A thickness of the third lens130on the optical axis is TP3, and a thickness of the third lens130at the height of a half of the entrance pupil diameter (HEP) is denoted by ETP3.

For the third lens130, SGI311is 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 SGI321is 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.

For the third lens130, SGI312is 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 SGI322is 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.

For the third lens130, HIF311is 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; HIF321is 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.

For the third lens130, HIF312is 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; HIF322is 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 lens140has positive refractive power and is made of plastic. An object-side surface142, which faces the object side, is a convex aspheric surface, and an image-side surface144, which faces the image side, is a convex aspheric surface. The object-side surface142has an inflection point. A thickness of the fourth lens140on the optical axis is TP4, and a thickness of the fourth lens140at the height of a half of the entrance pupil diameter (HEP) is denoted by ETP4.

The fourth lens140satisfies SGI411=0.0018 mm; |SGI411|/(|SGI411|+TP4)=0.0009, where SGI411is 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 SGI421is 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.

For the fourth lens140, SGI412is 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 SGI422is 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 lens140further satisfies HIF411=0.7191 mm; HIF411/HOI=0.0959, where HIF411is 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; HIF421is 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.

For the fourth lens140, HIF412is 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; HIF422is 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 lens150has positive refractive power and is made of plastic. An object-side surface152, which faces the object side, is a concave aspheric surface, and an image-side surface154, which faces the image side, is a convex aspheric surface. The object-side surface152and the image-side surface154both have an inflection point. A thickness of the fifth lens150on the optical axis is TP5, and a thickness of the fifth lens150at the height of a half of the entrance pupil diameter (HEP) is denoted by ETP5.

For the fifth lens150, SGI512is 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 SGI522is 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 lens150further satisfies HIF511=3.8179 mm; HIF521=4.5480 mm; HIF511/HOI=0.5091; HIF521/HOI=0.6065, where HIF511is 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; HIF521is 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.

For the fifth lens150, HIF512is 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; HIF522is 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 lens160has negative refractive power and is made of plastic. An object-side surface162, which faces the object side, is a convex aspheric surface, and an image-side surface164, which faces the image side, is a concave aspheric surface. The object-side surface162and the image-side surface164both have an inflection point. Whereby, the incident angle of each view field entering the sixth lens160can be effectively adjusted to improve aberration. A thickness of the sixth lens160on the optical axis is TP6, and a thickness of the sixth lens160at the height of a half of the entrance pupil diameter (HEP) is denoted by ETP6.

The seventh lens170has positive refractive power and is made of plastic. An object-side surface172, which faces the object side, is a convex aspheric surface, and an image-side surface174, which faces the image side, is a concave aspheric surface. The object-side surface172and the image-side surface174both have an inflection point. A thickness of the seventh lens170on the optical axis is TP7, and a thickness of the seventh lens170at the height of a half of the entrance pupil diameter (HEP) is denoted by ETP7.

The seventh lens170further satisfies HIF711=1.6707 mm; HIF721=1.8616 mm; HIF711/HOI=0.2228; HIF721/HOI=0.2482, where HIF711is 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; HIF721is 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 ½ HEP on the object-side surface of the first lens110and the image plane is ETL, and a distance in parallel with the optical axis between the coordinate point at the height of ½ HEP on the object-side surface of the first lens110and a coordinate point at a height of ½ HEP on the image-side surface of the seventh lens140is EIN, which satisfies: ETL=26.980 mm; EIN=24.999 mm; EIN/ETL=0.927.

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=1.085; ETP2/TP2=0.982; ETP3/TP3=1.073; ETP4/TP4=0.852; ETP5/TP5=0.914; ETP6/TP6=1.759; ETP7/TP7=0.963.

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 lens110and the second lens120at the height of a half of the entrance pupil diameter (HEP) is denoted by ED12, wherein ED12=4.474 mm; the horizontal distance between the second lens120and the third lens130at the height of a half of the entrance pupil diameter (HEP) is denoted by ED23, wherein ED23=0.349 mm; the horizontal distance between the third lens130and the fourth lens140at the height of a half of the entrance pupil diameter (HEP) is denoted by ED34, wherein ED34=1.660 mm; the horizontal distance between the fourth lens140and the fifth lens150at the height of a half of the entrance pupil diameter (HEP) is denoted by ED45, wherein ED45=1.794 mm; the horizontal distance between the fifth lens150and the sixth lens160at the height of a half of the entrance pupil diameter (HEP) is denoted by ED56, wherein ED56=0.714 mm; the horizontal distance between the sixth lens160and the seventh lens170at the height of a half of the entrance pupil diameter (HEP) is denoted by ED67, wherein ED67=0.284 mm. The sum of the aforementioned ED12to ED67is SED, wherein SED=9.276 mm.

The horizontal distance between the first lens110and the second lens120on the optical axis is denoted by IN12, wherein IN12=4.552 mm, and ED12/IN12=0.983. The horizontal distance between the second lens120and the third lens130on the optical axis is denoted by IN23, wherein IN23=0.162 mm, and ED23/IN23=2.153. The horizontal distance between the third lens130and the fourth lens140on the optical axis is denoted by IN34, wherein IN34=1.927 mm, and ED34/IN34=0.862. The horizontal distance between the fourth lens140and the fifth lens150on the optical axis is denoted by IN45, wherein IN45=1.515 mm, and ED45/IN45=1.184. The horizontal distance between the fifth lens150and the sixth lens160on the optical axis is denoted by IN56, wherein IN56=0.050 mm, and ED56/IN56=14.285. The horizontal distance between the sixth lens160and the seventh lens170on the optical axis is denoted by IN67, wherein IN67=0.211 mm, and ED67/IN67=1.345. The sum of the aforementioned IN12to IN67is denoted by SIN, wherein SIN=8.418, and SED/SIN=1.102.

The horizontal distance in parallel with the optical axis between a coordinate point at the height of ½ HEP on the image-side surface of the seventh lens170and image surface is denoted by EBL, wherein EBL=1.982 mm. The horizontal distance in parallel with the optical axis between the point on the image-side surface of the seventh lens170where the optical axis passes through and the image plane is denoted by BL, wherein BL=2.517 mm. The optical image capturing system of the first embodiment satisfies: EBL/BL=0.7874. The horizontal distance in parallel with the optical axis between the coordinate point at the height of ½ HEP on the image-side surface of the seventh lens170and the infrared rays filter180is denoted by EIR, wherein EIR=0.865 mm. The horizontal distance in parallel with the optical axis between the point on the image-side surface of the seventh lens170where the optical axis passes through and the infrared rays filter180is denoted by PIR, wherein PIR=1.400 mm, and it satisfies: EIR/PIR=0.618.

The description below and the features related to inflection points are obtained based on main reference wavelength of 555 nm.

The infrared rays filter180is made of glass and between the seventh lens170and the image plane190. The infrared rays filter180gives no contribution to the focal length of the system.

The optical image capturing system10of the first embodiment has the following parameters, which are f=4.3019 mm; f/HEP=1.2; HAF=59.9968 degrees; and tan(HAF)=1.7318, 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=−14.5286 mm; |f/f1|=0.2961; f7=8.2933; |f1|>f7; and |f1/f7|=1.7519, where f1 is a focal length of the first lens110; and f7 is a focal length of the seventh lens170.

The first embodiment further satisfies |f2|+|f3|+|f4|+|f5|+|f6|=144.7494; |f1|+|f7|=22.8219 and |f2|+|f3|+|f4|+|f5|+|f6|>|f1|+|f7|, where f2 is a focal length of the second lens120, f3 is a focal length of the third lens130, f4 is a focal length of the fourth lens140, f5 is a focal length of the fifth lens150, f6 is a focal length of the sixth lens160, and f7 is a focal length of the seventh lens170.

The optical image capturing system10of the first embodiment further satisfies ΣPPR=f/f2+f/f4+f/f5+f/f7=1.7384; ΣNPR=f/f1+f/f3+f/f6=−0.9999; ΣPPR/|ΣNPR|=1.7386; |f/f2|=0.1774; |f/f3|=0.0443; |f/f4|=0.4411; |f/f5|=0.6012; |f/f6|=0.6595; |f/f7|=0.5187, 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 system10of the first embodiment further satisfies InTL+BFL=HOS; HOS=26.9789 mm; HOI=7.5 mm; HOS/HOI=3.5977; HOS/f=6.2715; InS=12.4615 mm; and InS/HOS=0.4619, where InTL is a distance between the object-side surface112of the first lens110and the image-side surface174of the seventh lens170; HOS is a height of the image capturing system, i.e. a distance between the object-side surface112of the first lens110and the image plane190; InS is a distance between the aperture100and the image plane190; HOI is a half of a diagonal of an effective sensing area of the image sensor192, i.e., the maximum image height; and BFL is a distance between the image-side surface174of the seventh lens170and the image plane190.

The optical image capturing system10of the first embodiment further satisfies ΣTP=16.0446 mm; and ΣTP/InTL=0.6559, where ETP is a sum of the thicknesses of the lenses110-150with 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 system10of the first embodiment further satisfies |R1/R2|=129.9952, where R1is a radius of curvature of the object-side surface112of the first lens110, and R2is a radius of curvature of the image-side surface114of the first lens110. It provides the first lens with a suitable positive refractive power to reduce the increase rate of the spherical aberration.

The optical image capturing system10of the first embodiment further satisfies (R13−R14)/(R13+R14)=−0.0806, where R13is a radius of curvature of the object-side surface172of the seventh lens170, and R14is a radius of curvature of the image-side surface174of the seventh lens170. It may modify the astigmatic field curvature.

The optical image capturing system10of the first embodiment further satisfies ΣPP=f2+f4+f5+f7=49.4535 mm; and f4/(f2+f4+f5+f7)=0.1972, where 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 fourth lens140to other positive lenses to avoid the significant aberration caused by the incident rays.

The optical image capturing system10of the first embodiment further satisfies ΣNP=f1+f3+f6=−118.1178 mm; and f1/(f1+f3+f6)=0.1677, where 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 first lens110to the other negative lens, which avoid the significant aberration caused by the incident rays.

The optical image capturing system10of the first embodiment further satisfies IN12=4.5524 mm; IN12/f=1.0582, where IN12is a distance on the optical axis between the first lens110and the second lens120. It may correct chromatic aberration and improve the performance.

The optical image capturing system10of the first embodiment further satisfies TP1=2.2761 mm; TP2=0.2398 mm; and (TP1+IN12)/TP2=1.3032, where TP1is a central thickness of the first lens110on the optical axis, and TP2is a central thickness of the second lens120on the optical axis. It may control the sensitivity of manufacture of the system and improve the performance.

The optical image capturing system10of the first embodiment further satisfies TP6=0.3000 mm; TP7=1.1182 mm; and (TP7+IN67)/TP6=4.4322, where TP6is a central thickness of the sixth lens160on the optical axis, TP7is a central thickness of the seventh lens170on the optical axis, and IN67is a distance on the optical axis between the sixth lens160and the seventh lens170. It may control the sensitivity of manufacture of the system and lower the total height of the system.

The optical image capturing system10of the first embodiment further satisfies TP3=0.8369 mm; TP4=2.0022 mm; TP5=4.2706 mm; IN34=1.9268 mm; IN45=1.5153 mm; and TP4/(IN34+TP4+IN45)=0.3678, where TP3is a central thickness of the third lens130on the optical axis, TP4is a central thickness of the fourth lens140on the optical axis, TP5is a central thickness of the fifth lens150on the optical axis; IN34is a distance on the optical axis between the third lens130and the fourth lens140; IN45is a distance on the optical axis between the fourth lens140and the fifth lens150; InTL is a distance between the object-side surface112of the first lens110and the image-side surface174of the seventh lens170. It may control the sensitivity of manufacture of the system and lower the total height of the system.

The optical image capturing system10of the first embodiment further satisfies InRS61=−0.7823 mm; InRS62=−0.2166 mm; and |InRS62|/TP6=0.722, where InRS61is a displacement in parallel with the optical axis from a point on the object-side surface162of the sixth lens160, through which the optical axis passes, to a point at the maximum effective semi diameter of the object-side surface162of the sixth lens160; InRS62is a displacement in parallel with the optical axis from a point on the image-side surface164of the sixth lens160, through which the optical axis passes, to a point at the maximum effective semi diameter of the image-side surface164of the sixth lens160; and TP6is a central thickness of the sixth lens160on the optical axis. It is helpful for manufacturing and shaping of the lenses and is helpful to reduce the size.

The optical image capturing system10of the first embodiment further satisfies HVT61=3.3498 mm; HVT62=3.9860 mm; and HVT61/HVT62=0.8404, where HVT61is a distance perpendicular to the optical axis between the critical point on the object-side surface162of the sixth lens160and the optical axis; and HVT62is a distance perpendicular to the optical axis between the critical point on the image-side surface164of the sixth lens160and the optical axis.

The optical image capturing system10of the first embodiment further satisfies InRS71=−0.2756 mm; InRS72=−0.0938 mm; and |InRS72|/TP7=0.0839, where InRS71is a displacement in parallel with the optical axis from a point on the object-side surface172of the seventh lens170, through which the optical axis passes, to a point at the maximum effective semi diameter of the object-side surface172of the seventh lens170; InRS72is a displacement in parallel with the optical axis from a point on the image-side surface174of the seventh lens170, through which the optical axis passes, to a point at the maximum effective semi diameter of the image-side surface174of the seventh lens170; and TP7is a central thickness of the seventh lens170on the optical axis. It is helpful for manufacturing and shaping of the lenses and is helpful to reduce the size.

The optical image capturing system10of the first embodiment satisfies HVT71=3.6822 mm; HVT72=4.0606 mm; and HVT71/HVT72=0.9068, where HVT71is a distance perpendicular to the optical axis between the critical point on the object-side surface172of the seventh lens170and the optical axis; and HVT72is a distance perpendicular to the optical axis between the critical point on the image-side surface174of the seventh lens170and the optical axis.

The optical image capturing system10of the first embodiment satisfies HVT72/HOI=0.5414. It is helpful for correction of the aberration of the peripheral view field of the optical image capturing system.

The optical image capturing system10of the first embodiment satisfies HVT72/HOS=0.1505. It is helpful for correction of the aberration of the peripheral view field of the optical image capturing system.

The second lens120, the third lens130, and the seventh lens170have negative refractive power. The optical image capturing system10of the first embodiment further satisfies 1≦NA7/NA2, where NA2 is an Abbe number of the second lens120; NA3 is an Abbe number of the third lens130; and NA7 is an Abbe number of the seventh lens170. It may correct the aberration of the optical image capturing system.

The optical image capturing system10of the first embodiment further satisfies |TDT|=2.5678%; |ODT|=2.1302%, 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 MTFE0is around 0.35, MTFE3is around 0.14, and MTEF7is around 0.28; 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 MTFQ0is around 0.126, MTFQ3is around 0.075, and MTFQ7is around 0.177; 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 MTFH0is around 0.01, MTFH3is around 0.01, and MTFH7is around 0.01.

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 MTFI0is around 0.01, MTFI3is around 0.01, and MTFI7is around 0.01.

The parameters of the lenses of the first embodiment are listed in Table 1 and Table 2.

TABLE 2Coefficients of the aspheric surfacesSurface1234568k2.500000E+01−4.711931E−011.531617E+00−1.153034E+01−2.915013E+004.886991E+00−3.459463E+01A45.236918E−06−2.117558E−047.146736E−054.353586E−045.793768E−04−3.756697E−04−1.292614E−03A6−3.014384E−08−1.838670E−062.334364E−061.400287E−052.112652E−043.901218E−04−1.602381E−05A8−2.487400E−109.605910E−09−7.479362E−08−1.688929E−07−1.344586E−05−4.925422E−05−8.452359E−06A101.170000E−12−8.256000E−111.701570E−093.829807E−081.000482E−064.139741E−067.243999E−07A120.000000E+000.000000E+000.000000E+000.000000E+000.000000E+000.000000E+000.000000E+00A140.000000E+000.000000E+000.000000E+000.000000E+000.000000E+000.000000E+000.000000E+00Surface9101112131415k−7.549291E+00−5.000000E+01−1.740728E+00−4.709650E+00−4.509781E+00−3.427137E+00−3.215123E+00A4−5.583548E−031.240671E−046.467538E−04−1.872317E−03−8.967310E−04−3.189453E−03−2.815022E−03A61.947110E−04−4.949077E−05−4.981838E−05−1.523141E−05−2.688331E−05−1.058126E−051.884580E−05A8−1.486947E−052.088854E−069.129031E−07−2.169414E−06−8.324958E−071.760103E−06−1.017223E−08A10−6.501246E−08−1.438383E−087.108550E−09−2.308304E−08−6.184250E−09−4.730294E−083.660000E−12A120.000000E+000.000000E+000.000000E+000.000000E+000.000000E+000.000000E+000.000000E+00A140.000000E+000.000000E+000.000000E+000.000000E+000.000000E+000.000000E+000.000000E+00

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-A20indicate 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.

As shown inFIG. 2AandFIG. 2B, an optical image capturing system20of the second embodiment of the present invention includes, along an optical axis from an object side to an image side, a first lens210, a second lens220, a third lens230, an aperture200, a fourth lens240, a fifth lens250, a sixth lens260, a seventh lens270, an infrared rays filter280, an image plane290, and an image sensor292.FIG. 2Cshows a modulation transformation of the optical image capturing system20of the second embodiment of the present application in visible spectrum.

The first lens210has negative refractive power and is made of glass. An object-side surface212thereof, which faces the object side, is a convex surface, and an image-side surface214thereof, which faces the image side, is a concave surface.

The second lens220has negative refractive power and is made of plastic. An object-side surface222thereof, which faces the object side, is a concave aspheric surface, and an image-side surface224thereof, which faces the image side, is a concave aspheric surface.

The third lens230has positive refractive power and is made of plastic. An object-side surface232, which faces the object side, is a convex aspheric surface, and an image-side surface234, which faces the image side, is a convex aspheric surface. The image-side surface234has an inflection point.

The fourth lens240has positive refractive power and is made of plastic. An object-side surface242, which faces the object side, is a convex aspheric surface, and an image-side surface244, which faces the image side, is a convex aspheric surface. The object-side surface242has an inflection point.

The fifth lens250has negative refractive power and is made of plastic. An object-side surface252, which faces the object side, is a concave aspheric surface, and an image-side surface254, which faces the image side, is a concave aspheric surface. The object-side surface252has an inflection point.

The sixth lens260has positive refractive power and is made of plastic. An object-side surface262, which faces the object side, is a convex aspheric surface, and an image-side surface254, which faces the image side, is a concave aspheric surface. Whereby, the incident angle of each view field entering the sixth lens260can be effectively adjusted to improve aberration.

The seventh lens270has positive refractive power and is made of plastic. An object-side surface272, which faces the object side, is a convex surface, and an image-side surface274, 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 surface272has an inflection point, and the image-side surface274has two inflection points, 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 filter280is made of glass and between the seventh lens270and the image plane290. The infrared rays filter280gives no contribution to the focal length of the system.

The parameters of the lenses of the second embodiment are listed in Table 3 and Table 4.

TABLE 4Coefficients of the aspheric surfacesSurface1234568k0.000000E+000.000000E+001.933912E+00−3.858963E−015.117383E+00−2.299742E+00−5.136786E−01A40.000000E+000.000000E+001.123483E−04−4.537380E−04−2.862699E−04−8.991623E−06−2.950156E−05A60.000000E+000.000000E+00−1.392673E−071.294770E−06−2.372119E−074.848725E−071.869698E−07A80.000000E+000.000000E+004.513229E−092.016883E−08−5.749180E−091.321003E−083.858575E−08A100.000000E+000.000000E+004.335088E−117.336173E−114.063360E−10−4.402492E−10−1.409052E−09A120.000000E+000.000000E+00−1.069253E−12−7.304525E−131.667472E−128.930301E−12−8.644341E−14A140.000000E+000.000000E+005.654648E−151.238495E−14−1.040735E−144.560165E−14−7.625573E−16A160.000000E+000.000000E+000.000000E+000.000000E+000.000000E+000.000000E+000.000000E+00Surface9101112131415k−5.964997E−017.753137E−02−1.284751E+00−4.972141E−014.498599E+01−2.072900E−01−5.000000E+01A4−4.073810E−057.616772E−05−1.285736E−05−3.915940E−05−1.890737E−04−4.956466E−049.709000E−04A6−1.026079E−06−3.993908E−06−8.637112E−07−1.059939E−066.280048E−06−7.386762E−07−3.350400E−05A8−1.470663E−083.248841E−09−3.422349E−085.383333E−102.091540E−083.831124E−09−9.535927E−07A104.601020E−101.510128E−099.468955E−10−2.410515E−104.578987E−10−2.872008E−092.999885E−08A12−3.732226E−125.332691E−12−1.738647E−132.232937E−111.180854E−11−2.016393E−12−2.592937E−17A142.832806E−17−2.680473E−16−4.044630E−168.699824E−152.085329E−152.534808E−14−1.081916E−19A160.000000E+000.000000E+000.000000E+000.000000E+000.000000E+000.000000E+000.000000E+00

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:

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

As shown inFIG. 3AandFIG. 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, a first lens310, a second lens320, a third lens330, an aperture300, a fourth lens340, a fifth lens350, a sixth lens360, a seventh lens370, an infrared rays filter380, an image plane390, and an image sensor392.FIG. 3Cshows a modulation transformation of the optical image capturing system30of the third embodiment of the present application in visible spectrum.

The first lens310has negative refractive power and is made of glass. An object-side surface312thereof, which faces the object side, is a convex surface, and an image-side surface314thereof, which faces the image side, is a concave surface.

The second lens320has negative refractive power and is made of plastic. An object-side surface322thereof, which faces the object side, is a concave aspheric surface, and an image-side surface324thereof, which faces the image side, is a concave aspheric surface.

The third lens330has positive refractive power and is made of plastic. An object-side surface332thereof, which faces the object side, is a convex aspheric surface, and an image-side surface334thereof, which faces the image side, is a convex aspheric surface. The image-side surface334has an inflection point.

The fourth lens340has positive refractive power and is made of plastic. An object-side surface342, which faces the object side, is a convex aspheric surface, and an image-side surface344, which faces the image side, is a convex aspheric surface. The object-side surface342has an inflection point.

The fifth lens350has negative refractive power and is made of plastic. An object-side surface352, which faces the object side, is a concave aspheric surface, and an image-side surface354, which faces the image side, is a concave aspheric surface. The object-side surface352has an inflection point.

The sixth lens360has positive refractive power and is made of plastic. An object-side surface362, which faces the object side, is a convex surface, and an image-side surface364, which faces the image side, is a convex surface. The image-side surface364has an inflection point. Whereby, the incident angle of each view field entering the sixth lens360can be effectively adjusted to improve aberration.

The seventh lens370has positive refractive power and is made of plastic. An object-side surface372, which faces the object side, is a convex surface, and an image-side surface374, 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 surface372has an inflection point, and the image-side surface374has two inflection points, 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 filter380is made of glass and between the seventh lens370and the image plane390. The infrared rays filter390gives no contribution to the focal length of the system.

The parameters of the lenses of the third embodiment are listed in Table 5 and Table 6.

TABLE 6Coefficients of the aspheric surfacesSurface1234568k0.000000E+000.000000E+002.348889E+00−2.361520E+00−8.850587E+00−6.936826E+00−1.750149E−02A40.000000E+000.000000E+00−1.182208E−05−1.031440E−041.557048E−051.801070E−057.687312E−06A60.000000E+000.000000E+005.426783E−07−2.498537E−06−2.674831E−063.849728E−061.089740E−06A80.000000E+000.000000E+004.475908E−098.661101E−09−7.946457E−09−7.518252E−08−3.507886E−08A100.000000E+000.000000E+00−4.161117E−116.178067E−108.051102E−102.309650E−09−7.130409E−10A120.000000E+000.000000E+00−1.180298E−14−2.782527E−148.862199E−148.176189E−156.310603E−22A140.000000E+000.000000E+009.639764E−183.094953E−252.275737E−252.649399E−253.047631E−25A160.000000E+000.000000E+000.000000E+000.000000E+000.000000E+000.000000E+000.000000E+00Surface9101112131415k1.707057E−01−9.206934E−016.722985E−01−5.868891E+002.752487E+00−1.041756E+009.040217E+00A41.140726E−054.668289E−06−2.163193E−046.192281E−05−1.728445E−05−1.153430E−049.109488E−04A6−1.033002E−06−3.982126E−065.186734E−062.222481E−064.484376E−062.329331E−06−4.989550E−05A8−1.393543E−084.140777E−084.279380E−083.267713E−081.039445E−08−3.188175E−08−3.584557E−07A101.793438E−102.559176E−094.514768E−10−5.157315E−10−4.438970E−12−6.107938E−102.337844E−08A122.659169E−146.713022E−14−7.876439E−14−6.063020E−143.617237E−145.783120E−152.494689E−22A142.811816E−253.366123E−254.323412E−261.688275E−164.231256E−17−1.175730E−213.083166E−25A160.000000E+000.000000E+000.000000E+000.000000E+000.000000E+000.000000E+000.000000E+00

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:

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

As shown inFIG. 4AandFIG. 4B, an optical image capturing system40of the fourth embodiment of the present invention includes, along an optical axis from an object side to an image side, a first lens410, a second lens420, a third lens430, an aperture400, a fourth lens440, a fifth lens450, a sixth lens460, a seventh lens470, an infrared rays filter480, an image plane490, and an image sensor492.FIG. 4Cshows a modulation transformation of the optical image capturing system40of the fourth embodiment of the present application in visible spectrum.

The first lens410has negative refractive power and is made of glass. An object-side surface412thereof, which faces the object side, is a convex surface, and an image-side surface414thereof, which faces the image side, is a concave surface.

The second lens420has negative refractive power and is made of plastic. An object-side surface422thereof, which faces the object side, is a convex aspheric surface, and an image-side surface424thereof, which faces the image side, is a concave aspheric surface.

The third lens430has positive refractive power and is made of plastic. An object-side surface432thereof, which faces the object side, is a convex aspheric surface, and an image-side surface434thereof, which faces the image side, is a convex aspheric surface. The object-side surface432has an inflection point.

The fourth lens440has positive refractive power and is made of plastic. An object-side surface442, which faces the object side, is a convex aspheric surface, and an image-side surface444, which faces the image side, is a convex aspheric surface.

The fifth lens450has negative refractive power and is made of plastic. An object-side surface452, which faces the object side, is a convex aspheric surface, and an image-side surface454, which faces the image side, is a concave aspheric surface. The object-side surface452has an inflection point.

The sixth lens460has positive refractive power and is made of plastic. An object-side surface462, which faces the object side, is a convex surface, and an image-side surface464, which faces the image side, is a concave surface. Whereby, the incident angle of each view field entering the sixth lens460can be effectively adjusted to improve aberration.

The seventh lens470has positive refractive power and is made of plastic. An object-side surface472, which faces the object side, is a convex surface, and an image-side surface474, 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, the object-side surface472has an inflection point, and the image-side surface474has two inflection points, 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 filter480is made of glass and between the seventh lens470and the image plane490. The infrared rays filter480gives no contribution to the focal length of the system.

The parameters of the lenses of the fourth embodiment are listed in Table 7 and Table 8.

TABLE 8Coefficients of the aspheric surfacesSurface1234568k0.000000E+000.000000E+001.053686E+00−7.140615E−01−5.000000E+01−1.336359E+016.501926E−01A40.000000E+000.000000E+001.854180E−05−5.168150E−04−9.950603E−05−1.480304E−044.642250E−04A60.000000E+000.000000E+00−6.853841E−07−1.858787E−067.125927E−075.221857E−067.542475E−06A80.000000E+000.000000E+00−2.997699E−09−2.795620E−084.261462E−08−8.495007E−08−1.716285E−07A100.000000E+000.000000E+004.597898E−11−1.099842E−09−1.123128E−09−6.354748E−108.499241E−10A120.000000E+000.000000E+00−3.811553E−13−5.369989E−12−5.791488E−133.080068E−11−3.352676E−17A140.000000E+000.000000E+002.299664E−15−9.457713E−145.072425E−14−3.022796E−20−3.075040E−20A160.000000E+000.000000E+000.000000E+000.000000E+000.000000E+000.000000E+000.000000E+00Surface9101112131415k1.940566E+00−5.000000E+01−1.906458E+00−1.051345E+00−4.471464E+01−1.051531E+00−5.000000E+01A48.559678E−04−2.331530E−03−8.457613E−04−2.360056E−04−1.194422E−03−4.688312E−041.519997E−03A6−2.313390E−073.046492E−052.260404E−053.147672E−056.542294E−052.438159E−06−5.932292E−05A83.271241E−071.812480E−061.441436E−06−5.136061E−073.297393E−07−6.380285E−07−7.709145E−07A10−9.004556E−09−6.342103E−08−4.312620E−083.897731E−09−8.861264E−09−1.713285E−082.157791E−08A12−3.256601E−17−3.055759E−17−3.306351E−17−3.233877E−17−3.028082E−17−3.277482E−17−9.086728E−11A14−3.058193E−20−3.123740E−20−3.270690E−20−2.696207E−20−6.507101E−20−3.610678E−20−3.445205E−20A160.000000E+000.000000E+000.000000E+000.000000E+000.000000E+000.000000E+000.000000E+00

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:

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

As shown inFIG. 5AandFIG. 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, a first lens510, a second lens520, a third lens530, an aperture500, a fourth lens540, a fifth lens550, a sixth lens560, a seventh lens570, an infrared rays filter580, an image plane590, and an image sensor592.FIG. 5Cshows a modulation transformation of the optical image capturing system50of the fifth embodiment of the present application in visible spectrum, andFIG. 5Dshows a modulation transformation of the optical image capturing system50of the fifth embodiment of the present application in infrared spectrum.

The first lens510has negative refractive power and is made of glass. An object-side surface512, which faces the object side, is a convex surface, and an image-side surface514, which faces the image side, is a concave surface.

The second lens520has negative refractive power and is made of plastic. An object-side surface522thereof, which faces the object side, is a concave aspheric surface, and an image-side surface524thereof, which faces the image side, is a concave aspheric surface. The object-side surface522has an inflection point.

The third lens530has positive refractive power and is made of plastic. An object-side surface532, which faces the object side, is a convex aspheric surface, and an image-side surface534, which faces the image side, is a convex aspheric surface.

The fourth lens540has positive refractive power and is made of plastic. An object-side surface542, which faces the object side, is a convex surface, and an image-side surface544, which faces the image side, is a convex surface.

The fifth lens550has negative refractive power and is made of plastic. An object-side surface552, which faces the object side, is a concave surface, and an image-side surface554, which faces the image side, is a concave surface.

The sixth lens560has positive refractive power and is made of plastic. An object-side surface562, which faces the object side, is a convex surface, and an image-side surface564, which faces the image side, is a concave surface. Whereby, the incident angle of each view field entering the sixth lens560can be effectively adjusted to improve aberration.

The seventh lens570has positive refractive power and is made of plastic. An object-side surface572, which faces the object side, is a convex surface, and an image-side surface574, which faces the image side, is a convex surface. The object-side surface572has an inflection point.

The infrared rays filter580is made of glass and between the seventh lens570and the image plane590. The infrared rays filter580gives no contribution to the focal length of the system.

The parameters of the lenses of the fifth embodiment are listed in Table 9 and Table 10.

TABLE 10Coefficients of the aspheric surfacesSurface1234568k0.000000E+000.000000E+002.810825E+01−5.867691E−01−2.194192E+00−5.332142E+00−1.820742E+00A40.000000E+000.000000E+00−6.799335E−06−5.327326E−04−1.071668E−04−5.621117E−041.366355E−03A60.000000E+000.000000E+00−6.731892E−079.398220E−071.829093E−064.686561E−053.475834E−05A80.000000E+000.000000E+00−3.530358E−097.394151E−084.138303E−08−2.648136E−06−6.462562E−07A100.000000E+000.000000E+00−2.716428E−11−3.111966E−092.891616E−108.654276E−086.372447E−08A120.000000E+000.000000E+001.264335E−12−1.766775E−10−6.993999E−112.030168E−111.276437E−17A140.000000E+000.000000E+00−6.306011E−156.393840E−16−1.074549E−15−2.623768E−191.198977E−18A160.000000E+000.000000E+000.000000E+000.000000E+000.000000E+000.000000E+000.000000E+00Surface9101112131415k−3.126614E+01−1.940813E+00−6.973946E+00−1.296745E+015.000000E+01−8.912197E+00−5.000000E+01A4−1.591155E−03−1.408259E−032.264427E−032.488044E−032.149299E−03−3.242087E−03−2.541250E−03A61.192688E−042.786411E−05−2.294631E−053.023923E−042.393012E−04−1.413817E−04−1.032062E−04A8−3.186547E−065.222525E−061.294146E−05−9.071695E−064.483743E−05−2.427665E−06−5.536322E−06A10−9.841871E−08−5.617882E−071.341617E−07−1.312266E−07−3.008351E−065.119703E−074.096858E−07A128.001695E−12−9.150074E−17−1.878201E−16−1.990954E−171.458525E−16−2.375686E−124.556038E−12A14−3.759464E−184.276341E−183.844848E−184.233951E−184.892837E−18−5.182299E−18−4.985547E−19A160.000000E+000.000000E+000.000000E+000.000000E+000.000000E+000.000000E+000.000000E+00

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:

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

As shown inFIG. 6AandFIG. 6B, an optical image capturing system of the sixth embodiment of the present invention includes, along an optical axis from an object side to an image side, a first lens610, a second lens620, a third lens630, an aperture600, a fourth lens640, a fifth lens650, a sixth lens660, a seventh lens670, an infrared rays filter680, an image plane690, and an image sensor692.FIG. 6Cshows a modulation transformation of the optical image capturing system60of the sixth embodiment of the present application in visible spectrum.

The first lens610has negative refractive power and is made of glass. An object-side surface612, which faces the object side, is a convex surface, and an image-side surface614, which faces the image side, is a concave surface.

The second lens620has negative refractive power and is made of plastic. An object-side surface622thereof, which faces the object side, is a concave aspheric surface, and an image-side surface624thereof, which faces the image side, is a concave aspheric surface.

The third lens630has positive refractive power and is made of plastic. An object-side surface632, which faces the object side, is a convex aspheric surface, and an image-side surface634, which faces the image side, is a convex aspheric surface. The image-side surface634has an inflection point.

The fourth lens640has positive refractive power and is made of plastic. An object-side surface642, which faces the object side, is a convex aspheric surface, and an image-side surface644, which faces the image side, is a convex aspheric surface.

The fifth lens650has negative refractive power and is made of plastic. An object-side surface652, which faces the object side, is a concave aspheric surface, and an image-side surface654, which faces the image side, is a concave aspheric surface.

The sixth lens660has positive refractive power and is made of plastic. An object-side surface662, which faces the object side, is a convex surface, and an image-side surface664, which faces the image side, is a concave surface. Whereby, the incident angle of each view field entering the sixth lens660can be effectively adjusted to improve aberration.

The seventh lens670has positive refractive power and is made of plastic. An object-side surface672, which faces the object side, is a convex surface, and an image-side surface674, which faces the image side, is a concave surface. The object-side surface672and the image-side surface674both have an inflection point. 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 filter680is made of glass and between the seventh lens670and the image plane690. The infrared rays filter680gives no contribution to the focal length of the system.

The parameters of the lenses of the sixth embodiment are listed in Table 11 and Table 12.

TABLE 12Coefficients of the aspheric surfacesSurface1234568k0.000000E+000.000000E+001.404596E+01−4.266236E−01−1.098075E−01−3.038984E+00−5.265998E−01A40.000000E+000.000000E+00−1.480116E−06−1.616313E−04−2.443483E−04−2.222242E−047.399341E−04A60.000000E+000.000000E+00−4.364534E−07−6.156245E−06−1.132062E−066.133174E−059.665711E−05A80.000000E+000.000000E+00−2.071583E−094.192553E−072.188724E−07−6.892997E−06−4.468368E−06A100.000000E+000.000000E+008.776142E−114.290674E−092.576816E−093.796767E−075.318192E−07A120.000000E+000.000000E+003.819415E−12−3.273222E−10−1.061632E−10−4.575342E−15−2.261712E−16A140.000000E+000.000000E+00−4.291027E−14−2.864748E−19−3.304118E−18−1.229511E−181.028701E−18A160.000000E+000.000000E+000.000000E+000.000000E+000.000000E+000.000000E+000.000000E+00Surface9101112131415k−1.317393E+01−7.930974E−01−5.651496E+00−8.867701E+00−4.221424E+01−6.215108E+00−5.000000E+01A4−1.341471E−03−4.367700E−033.403175E−032.537252E−031.252886E−03−9.810462E−04−1.258587E−03A6−7.715309E−052.506131E−041.212717E−042.641491E−043.802730E−04−8.489692E−06−2.773735E−05A85.783287E−054.220215E−05−1.560631E−05−2.388067E−052.154311E−05−1.046600E−06−6.303712E−07A10−5.009515E−06−7.545835E−062.708137E−062.180702E−07−3.817824E−06−4.076224E−08−3.411779E−08A122.848871E−17−1.251307E−166.561279E−17−2.757804E−168.422195E−171.600904E−113.933449E−11A148.708729E−19−9.712229E−203.301993E−18−2.076635E−18−6.921182E−182.192944E−19−3.461650E−19A160.000000E+000.000000E+000.000000E+000.000000E+000.000000E+000.000000E+000.000000E+00

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:

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

As shown inFIG. 7AandFIG. 7B, an optical image capturing system of the seventh embodiment of the present invention includes, along an optical axis from an object side to an image side, a first lens710, a second lens720, a third lens730, an aperture700, a fourth lens740, a fifth lens750, a sixth lens760, a seventh lens770, an infrared rays filter780, an image plane790, and an image sensor792.FIG. 7Cshows a modulation transformation of the optical image capturing system70of the seventh embodiment of the present application in visible spectrum.

The first lens710has negative refractive power and is made of glass. An object-side surface712, which faces the object side, is a convex surface, and an image-side surface714, which faces the image side, is a concave surface.

The second lens720has negative refractive power and is made of plastic. An object-side surface722thereof, which faces the object side, is a concave aspheric surface, and an image-side surface724thereof, which faces the image side, is a concave aspheric surface.

The third lens730has positive refractive power and is made of plastic. An object-side surface732, which faces the object side, is a convex aspheric surface, and an image-side surface734, which faces the image side, is a convex aspheric surface. The object-side surface732has an inflection point.

The fourth lens740has positive refractive power and is made of plastic. An object-side surface742, which faces the object side, is a convex aspheric surface, and an image-side surface744, which faces the image side, is a convex aspheric surface.

The fifth lens750has negative refractive power and is made of plastic. An object-side surface752, which faces the object side, is a concave aspheric surface, and an image-side surface754, which faces the image side, is a concave aspheric surface.

The sixth lens760has positive refractive power and is made of plastic. An object-side surface762, which faces the object side, is a convex surface, and an image-side surface764, which faces the image side, is a convex surface. The image-side surface764has an inflection point. Whereby, the incident angle of each view field entering the sixth lens760can be effectively adjusted to improve aberration.

The seventh lens770has positive refractive power and is made of plastic. An object-side surface772, which faces the object side, is a convex surface, and an image-side surface774, which faces the image side, is a concave surface. The object-side surface772has two inflection points, and the image-side surface774has an inflection point. 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 filter780is made of glass and between the seventh lens770and the image plane790. The infrared rays filter780gives no contribution to the focal length of the system.

The parameters of the lenses of the seventh embodiment are listed in Table 13 and Table 14.

TABLE 14Coefficients of the aspheric surfacesSurface1234568k0.000000E+000.000000E+00−9.030763E−01−4.595732E−01−5.000000E+01−1.046589E+01−6.057690E−01A40.000000E+000.000000E+005.880567E−06−9.443819E−04−4.563615E−04−1.581222E−031.437279E−03A60.000000E+000.000000E+00−9.730617E−07−1.635615E−051.597960E−062.714524E−042.842665E−04A80.000000E+000.000000E+00−2.310852E−08−1.587081E−07−7.908511E−08−3.412224E−05−3.017984E−05A100.000000E+000.000000E+00−4.725049E−11−2.652918E−08−1.561461E−092.622719E−063.098673E−06A120.000000E+000.000000E+005.367362E−12−4.457863E−102.620859E−102.005928E−178.366494E−17A140.000000E+000.000000E+001.227442E−132.169467E−13−1.551709E−131.324728E−19−2.781230E−19A160.000000E+000.000000E+000.000000E+000.000000E+000.000000E+000.000000E+000.000000E+00Surface9101112131415k−1.311842E+013.174776E+00−2.282722E+00−1.812252E+012.978964E+01−6.908811E+00−1.384227E+00A4−1.417862E−03−1.714679E−03−3.659798E−035.412554E−03−4.300685E−05−1.416516E−03−2.848358E−03A6−3.717249E−04−4.645822E−049.887462E−04−1.604392E−047.089932E−046.629764E−06−8.033915E−06A88.915012E−051.085692E−04−1.137058E−047.668277E−061.354278E−053.272746E−064.388326E−06A10−1.558203E−05−2.195867E−058.812954E−06−1.390266E−06−4.248948E−06−7.201025E−08−1.192304E−07A126.809498E−171.330467E−166.016375E−178.098117E−17−4.650184E−17−5.103509E−117.933572E−10A142.399736E−184.337817E−18−1.279233E−19−3.251733E−202.923311E−181.776374E−196.543896E−20A160.000000E+000.000000E+000.000000E+000.000000E+000.000000E+000.000000E+000.000000E+00

An equation of the aspheric surfaces of the seventh embodiment is the same as that of the first embodiment, and the definitions are the same as well.

The exact parameters of the seventh embodiment based on Table 13 and Table 14 are listed in the following table:

The results of the equations of the seventh embodiment based on Table 13 and Table 14 are listed in the following table:

As shown inFIG. 8AandFIG. 8B, an optical image capturing system of the eighth embodiment of the present invention includes, along an optical axis from an object side to an image side, a first lens810, a second lens820, a third lens830, an aperture800, a fourth lens840, a fifth lens850, a sixth lens860, a seventh lens870, an infrared rays filter880, an image plane890, and an image sensor892.FIG. 8Cshows a modulation transformation of the optical image capturing system80of the eighth embodiment of the present application in visible spectrum, and FIG.

The first lens810has negative refractive power and is made of plastic. An object-side surface812, which faces the object side, is a convex aspheric surface, and an image-side surface814, which faces the image side, is a concave aspheric surface. The object-side surface812and the image-side surface814both have an inflection point.

The second lens820has negative refractive power and is made of plastic. An object-side surface822thereof, which faces the object side, is a convex aspheric surface, and an image-side surface824thereof, which faces the image side, is a concave aspheric surface. The object-side surface822and the image-side surface824both have an inflection point.

The third lens830has positive refractive power and is made of plastic. An object-side surface832, which faces the object side, is a convex aspheric surface, and an image-side surface834, which faces the image side, is a convex aspheric surface. The object-side surface832and image-side surface834both have an inflection point.

The fourth lens840has positive refractive power and is made of plastic. An object-side surface842, which faces the object side, is a convex aspheric surface, and an image-side surface844, which faces the image side, is a convex aspheric surface.

The fifth lens850has negative refractive power and is made of plastic. An object-side surface852, which faces the object side, is a concave aspheric surface, and an image-side surface854, which faces the image side, is a concave aspheric surface.

The sixth lens860has positive refractive power and is made of plastic. An object-side surface862, which faces the object side, is a concave surface, and an image-side surface864, which faces the image side, is a convex surface. The object-side surface862and the image-side surface864both have an inflection point. Whereby, the incident angle of each view field entering the sixth lens860can be effectively adjusted to improve aberration.

The seventh lens870has positive refractive power and is made of plastic. An object-side surface882, which faces the object side, is a convex surface, and an image-side surface884, which faces the image side, is a concave surface. The image-side surface874has an inflection point. 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 filter880is made of glass and between the seventh lens870and the image plane890. The infrared rays filter880gives no contribution to the focal length of the system.

The optical image capturing system of the eighth embodiment further satisfies ΣPP=76.7754 mm; and f3/ΣPP=0.2346, 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 eighth embodiment further satisfies ΣNP=−29.9308 mm; and f1/ΣNP=0.4139, where ΣNP is a sum of the focal lengths of each negative lens. It is helpful to share the negative refractive power of one single lens to other negative lenses to avoid the significant aberration caused by the incident rays.

The parameters of the lenses of the eighth embodiment are listed in Table 15 and Table 16.

TABLE 16Coefficients of the aspheric surfacesSurface1234568k4.758702E+00−5.889217E−02−6.943469E+00−5.931587E−02−1.196153E+01−2.846770E+01−6.483847E−02A46.227544E−06−4.117326E−04−2.236683E−067.492048E−05−2.173923E−048.200135E−04−2.077686E−04A63.084494E−08−3.728783E−06−2.602700E−08−3.594973E−06−1.336542E−062.531078E−041.819755E−05A82.405824E−10−1.816585E−08−1.089998E−09−2.096298E−07−6.065276E−09−1.249497E−06−1.055843E−05A101.681390E−127.136442E−112.869754E−12−1.256432E−08−1.755005E−095.139796E−06−5.651390E−06A125.933250E−151.326333E−12−4.974101E−12−6.643498E−101.305674E−104.327953E−20−3.032302E−16A14−7.538093E−17−2.740915E−13−8.537290E−14−7.544791E−12−2.655221E−128.231837E−25−7.192269E−24A160.000000E+000.000000E+000.000000E+000.000000E+000.000000E+000.000000E+000.000000E+00Surface9101112131415k−1.615455E−01−1.254414E+003.463610E+002.303942E+01−1.893896E+01−2.877868E+005.000000E+01A4−5.897570E−042.278000E−045.564271E−04−4.933293E−041.732535E−03−1.952076E−045.340317E−04A6−1.825644E−04−6.332738E−042.397167E−041.095835E−041.847862E−045.075190E−069.227855E−05A82.019382E−07−1.577314E−04−8.070753E−068.942415E−051.970939E−056.130407E−061.629776E−05A10−5.333494E−066.144598E−077.661629E−061.242952E−055.071654E−064.969750E−07−7.504117E−07A12−2.606537E−17−3.647167E−16−1.006614E−16−4.105671E−092.954683E−097.578220E−093.011747E−09A148.064118E−25−2.699251E−242.566758E−22−5.014763E−221.332088E−187.114791E−12−5.940679E−12A160.000000E+000.000000E+000.000000E+000.000000E+000.000000E+000.000000E+000.000000E+00

An equation of the aspheric surfaces of the eighth embodiment is the same as that of the first embodiment, and the definitions are the same as well.

The exact parameters of the eighth embodiment based on Table 15 and Table 16 are listed in the following table:

The results of the equations of the eighth embodiment based on Table 15 and Table 16 are listed in the following table: