Optical image capturing system

A six-piece optical lens for capturing image and a six-piece optical module for capturing image are provided. In order from an object side to an image side, the optical lens along the optical axis includes a first lens with refractive power, a second lens with refractive power, a third lens with refractive power, a fourth lens with refractive power, a fifth lens with refractive power and a sixth lens with refractive power. At least one of the image-side surface and object-side surface of each of the six lens elements is aspheric. The optical lens can increase aperture value and improve the imagining quality for use in compact cameras.

CROSS-REFERENCE TO RELATED APPLICATION

This application claims the benefit of Taiwan Patent Application No. 105104346, filed on Feb. 15, 2016, in the Taiwan Intellectual Property Office, the disclosure of which is incorporated herein in its entirety by reference.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present disclosure relates to an optical image capturing system, and more particularly to a compact optical image capturing system which can be applied to electronic products.

2. Description of the 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 ordinary photographing camera is commonly selected from charge coupled device (CCD) or complementary metal-oxide semiconductor sensor (CMOS Sensor). In addition, as advanced semiconductor manufacturing technology enables the minimization of pixel size of the image sensing device, the development of the optical image capturing system directs towards the field of high pixels. Therefore, the requirement for high imaging quality is rapidly raised.

The traditional optical image capturing system of a portable electronic device comes with different designs, including a four-lens or a five-lens design. However, the requirement for the higher pixels and the requirement for a large aperture of an end user, like functionalities of micro filming and night view, or the requirement of wide view angle of the portable electronic device have been raised. But the optical image capturing system with the large aperture design often produces more aberration resulting in the deterioration of quality in peripheral image formation and difficulties of manufacturing, and the optical image capturing system with wide view angle design increases distortion rate in image formation, thus the optical image capturing system in prior arts cannot meet the requirement of the higher order camera lens module.

Therefore, how to effectively increase quantity of incoming light and view angle of the optical lenses, not only further improves total pixels and imaging quality for the image formation, but also considers the equity design of the miniaturized optical lenses, becomes a quite important issue.

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 six-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 the view angle of the optical lenses, and to improve total pixels and imaging quality for image formation, so as to be applied to minimized electronic products.

The term and its definition to the lens element parameter in the embodiment of the present invention are shown as below for further reference.

The lens element parameter related to a length or a height in the lens element

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 element to the image-side surface of the sixth lens element is denoted by InTL. A distance from an aperture stop (aperture) to an image plane is denoted by InS. A distance from the first lens element to the second lens element is denoted by In12 (instance). A central thickness of the first lens element of the optical image capturing system on the optical axis is denoted by TP1 (instance).

The lens element parameter related to a material in the lens element

An Abbe number of the first lens element in the optical image capturing system is denoted by NA1 (instance). A refractive index of the first lens element is denoted by Nd1 (instance).

The lens element parameter related to a view angle in the lens element

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 element parameter related to exit/entrance pupil in the lens element

An entrance pupil diameter of the optical image capturing system is denoted by HEP. A maximum effective half diameter (EHD) of any surface of a single lens element refers to a perpendicular height between an intersection point on the surface of the lens element where the incident light with the maximum view angle in the optical system passes through the outmost edge of the entrance pupil and the optical axis. For example, the maximum effective half diameter of the object-side surface of the first lens element is denoted by EHD 11. The maximum effective half diameter of the image-side surface of the first lens element is denoted by EHD 12. The maximum effective half diameter of the object-side surface of the second lens element is denoted by EHD 21. The maximum effective half diameter of the image-side surface of the second lens element is denoted by EHD 22. The maximum effective half diameters of any surfaces of other lens elements in the optical image capturing system are denoted in the similar way.

The lens element parameter related to a depth of the lens element shape

A distance in parallel with an optical axis from a maximum effective diameter position to an axial point on the object-side surface of the sixth lens element is denoted by InRS61 (instance). A distance in parallel with an optical axis from a maximum effective diameter position to an axial point on the image-side surface of the sixth lens element is denoted by InRS62 (instance).

The lens element parameter related to the lens element shape

A critical point C is a tangent point on a surface of a specific lens element, 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. To follow the past, a distance perpendicular to the optical axis between a critical point C51 on the object-side surface of the fifth lens element and the optical axis is HVT51 (instance). A distance perpendicular to the optical axis between a critical point C52 on the image-side surface of the fifth lens element and the optical axis is HVT52 (instance). A distance perpendicular to the optical axis between a critical point C61 on the object-side surface of the sixth lens element and the optical axis is HVT61 (instance). A distance perpendicular to the optical axis between a critical point C62 on the image-side surface of the sixth lens element and the optical axis is HVT62 (instance). Distances perpendicular to the optical axis between critical points on the object-side surfaces or the image-side surfaces of other lens elements and the optical axis are denoted in the similar way described above.

The object-side surface of the sixth lens element has one inflection point IF611 which is nearest to the optical axis, and the sinkage value of the inflection point IF611 is denoted by SGI611 (instance). SGI611 is a horizontal shift distance in parallel with the optical axis from an axial point on the object-side surface of the sixth lens element to the inflection point which is nearest to the optical axis on the object-side surface of the sixth lens element. A distance perpendicular to the optical axis between the inflection point IF611 and the optical axis is HIF611 (instance). The image-side surface of the sixth lens element has one inflection point IF621 which is nearest to the optical axis and the sinkage value of the inflection point IF621 is denoted by SGI621 (instance). SGI621 is a horizontal shift distance in parallel with the optical axis from an axial point on the image-side surface of the sixth lens element to the inflection point which is nearest to the optical axis on the image-side surface of the sixth lens element. A distance perpendicular to the optical axis between the inflection point IF621 and the optical axis is HIF621 (instance).

The object-side surface of the sixth lens element has one inflection point IF612 which is the second nearest to the optical axis and the sinkage value of the inflection point IF612 is denoted by SGI612 (instance). SGI612 is a horizontal shift distance in parallel with the optical axis from an axial point on the object-side surface of the sixth lens element to the inflection point which is the second nearest to the optical axis on the object-side surface of the sixth lens element. A distance perpendicular to the optical axis between the inflection point IF612 and the optical axis is HIF612 (instance). The image-side surface of the sixth lens element has one inflection point IF622 which is the second nearest to the optical axis and the sinkage value of the inflection point IF622 is denoted by SGI622 (instance). SGI622 is a horizontal shift distance in parallel with the optical axis from an axial point on the image-side surface of the sixth lens element to the inflection point which is the second nearest to the optical axis on the image-side surface of the sixth lens element. A distance perpendicular to the optical axis between the inflection point IF622 and the optical axis is HIF622 (instance).

The object-side surface of the sixth lens element has one inflection point IF613 which is the third nearest to the optical axis and the sinkage value of the inflection point IF613 is denoted by SGI613 (instance). SGI613 is a horizontal shift distance in parallel with the optical axis from an axial point on the object-side surface of the sixth lens element to the inflection point which is the third nearest to the optical axis on the object-side surface of the sixth lens element. A distance perpendicular to the optical axis between the inflection point IF613 and the optical axis is HIF613 (instance). The image-side surface of the sixth lens element has one inflection point IF623 which is the third nearest to the optical axis and the sinkage value of the inflection point IF623 is denoted by SGI623 (instance). SGI623 is a horizontal shift distance in parallel with the optical axis from an axial point on the image-side surface of the sixth lens element to the inflection point which is the third nearest to the optical axis on the image-side surface of the sixth lens element. A distance perpendicular to the optical axis between the inflection point IF623 and the optical axis is HIF623 (instance).

The object-side surface of the sixth lens element has one inflection point IF614 which is the fourth nearest to the optical axis and the sinkage value of the inflection point IF614 is denoted by SGI614 (instance). SGI614 is a horizontal shift distance in parallel with the optical axis from an axial point on the object-side surface of the sixth lens element to the inflection point which is the fourth nearest to the optical axis on the object-side surface of the sixth lens element. A distance perpendicular to the optical axis between the inflection point IF614 and the optical axis is HIF614 (instance). The image-side surface of the sixth lens element has one inflection point IF624 which is the fourth nearest to the optical axis and the sinkage value of the inflection point IF624 is denoted by SGI624 (instance). SGI624 is a horizontal shift distance in parallel with the optical axis from an axial point on the image-side surface of the sixth lens element to the inflection point which is the fourth nearest to the optical axis on the image-side surface of the sixth lens element. A distance perpendicular to the optical axis between the inflection point IF624 and the optical axis is HIF624 (instance).

The inflection points on the object-side surfaces or the image-side surfaces of the other lens elements and the distances perpendicular to the optical axis thereof or the sinkage values thereof are denoted in the similar way described above.

The lens element 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%. An offset of the spherical aberration is denoted by DFS. An offset of the coma aberration is denoted by DFC.

The vertical coordinate axis of the characteristic diagram of modulation transfer function represents a contrast transfer rate (values are from 0 to 1). The horizontal coordinate axis represents a spatial frequency (cycles/mm; lp/mm; line pairs per mm). Theoretically, an ideal image capturing system can 100% show the line contrast of a photographed object. However, the values of the contrast transfer rate at the vertical coordinate axis are smaller than 1 in the actual image capturing system. The transfer rate of its comparison value is less than a vertical axis. In addition, comparing to the central region, it is generally more difficult to achieve a fine degree of recovery in the edge region of image capturing. The contrast transfer rates (MTF values) with spatial frequencies of 55 cycles/m at the optical axis, 0.3 field of view and 0.7 field of view of a visible spectrum on the image plane are respectively denoted by MTFE0, MTFE3 and MTFE7. The contrast transfer rates (MTF values) with spatial frequencies of 110 cycles/m at the optical axis, 0.3 field of view and 0.7 field of view on the image plane are respectively denoted by MTFQ0, MTFQ3 and MTFQ7. The contrast transfer rates (MTF values) with spatial frequencies of 220 cycles/m at the optical axis, 0.3 field of view and 0.7 field of view on the image plane are respectively denoted by MTFH0, MTFH3 and MTFH7. The contrast transfer rates (MTF values) with spatial frequencies of 440 cycles/m 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 fields of view described above are representative to the center, the internal field of view and the external field of view of the lens elements. Thus, they may be used to evaluate whether the performance of a specific optical image capturing system is excellent. The design of the optical image capturing system of the present invention mainly corresponds to a pixel size in which a sensing device below 1.12 micrometers is includes. Therefore, the quarter spatial frequencies, the half spatial frequencies (half frequencies) and the full spatial frequencies (full frequencies) of the characteristic diagram of modulation transfer function respectively are at least 110 cycles/mm, 220 cycles/mm and 440 cycles/mm.

If an optical image capturing system needs to satisfy with the images aimed to infrared spectrum, such as the requirement for night vision with lower light source, the used wavelength may be 850 nm or 800 nm. As the main function is to recognize shape of an object formed in monochrome and shade, the high resolution is unnecessary, and thus, a spatial frequency, which is less than 110 cycles/mm, is used to evaluate the functionality of the optical image capturing system, when the optical image capturing system is applied to the infrared spectrum. When the foregoing wavelength 850 nm is applied to focus on the image plane, the contrast transfer rates (MTF values) with a spatial frequency of 55 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 MTFI0, MTFI3 and MTFI7. However, the infrared wavelength of 850 nm or 800 nm may be hugely different to wavelength of the regular visible light wavelength, and thus, it is hard to design an optical image capturing system which has to focus on the visible light and the infrared light (dual-mode) simultaneously while achieve a certain function respectively.

The disclosure provides an optical image capturing system, which is able to focus on the visible light and the infrared light (dual-mode) simultaneously while achieve a certain function respectively, and an object-side surface or an image-side surface of the fourth lens element has inflection points, such that the angle of incidence from each field of view to the fourth lens element can be adjusted effectively and the optical distortion and the TV distortion can be corrected as well. Besides, the surfaces of the fourth lens element may have a better optical path adjusting ability to acquire better imaging quality.

The disclosure provides an optical image capturing system, in order from an object side to an image side, including a first, second, third, fourth, fifth, sixth lens elements and an image plane. A maximum height for image formation on the image plane perpendicular to the optical axis in the optical image capturing system is denoted by HOI. At least two lens elements among the first through sixth lens elements respectively have at least one inflection point on at least one surface thereof. At least one lens element among the first through sixth lens elements has positive refractive power. Focal lengths of the first through sixth lens elements are f1, f2, f3, f4, f5 and f % respectively. A focal length of the optical image capturing system is f. An entrance pupil diameter of the optical image capturing system is HEP. A distance from an object-side surface of the first lens element to the image plane is HOS. A half of a maximum view angle of the optical image capturing system is HAF. Thicknesses in parallel with an optical axis of the first through sixth lens elements at height ½ HEP respectively are ETP1, ETP2, ETP3, ETP4, ETP5 and ETP6. A sum of ETP1 to ETP6 described above is SETP. Thicknesses of the first through sixth lens elements on the optical axis respectively are TP1, TP2, TP3, TP4, TP5 and TP6. A sum of TP1 to TP6 described above is STP. The following relations are satisfied: 1.0≤f/HEP≤2.2, 0.5≤5 HOS/f≤3.0 and 0.5≤SETP/STP<1.

The disclosure provides another optical image capturing system, in order from an object side to an image side, including a first, second, third, fourth, fifth, sixth lens elements and an image plane. A maximum height for image formation on the image plane perpendicular to the optical axis in the optical image capturing system is denoted by HOI. At least one lens elements among the first through sixth lens element has at least two inflection points on at least one surface thereof. At least one lens element among the first through third lens elements has positive refractive power, and at least one lens element among the fourth through sixth lens elements has positive refractive power. A focal length of the optical image capturing system is f. Focal lengths of the first through sixth lens elements are f1, 12, f3, f4, f5 and f6 respectively. An entrance pupil diameter of the optical image capturing system is HEP. A distance from an object-side surface of the first lens element to the image plane is HOS. A maximum height for image formation on the image plane perpendicular to the optical axis in the optical image capturing system is denoted by HOI. A half of a maximum view angle of the optical image capturing system is HAF. A horizontal distance in parallel with the optical axis from a coordinate point on the object-side surface of the first lens element at height ½ HEP to the image plane is ETL. A horizontal distance in parallel with the optical axis from a coordinate point on the object-side surface of the first lens element at height ½ HEP to a coordinate point on the image-side surface of the sixth lens element at height ½ HEP is EIN. The following relations are satisfied: 1.0≤f/HEP≤2.2, 0.5≤5 HOS/HOI≤1.6, 0.5≤HOS/f≤3.0 and 0.2≤EIN/ETL<1.

The disclosure provides another optical image capturing system, in order from an object side to an image side, including a first, second, third, fourth, fifth, sixth lens elements and an image plane. A maximum height for image formation on the image plane perpendicular to the optical axis in the optical image capturing system is denoted by HOI. At least one lens element among the second through sixth lens elements has positive refractive power. At least three lens elements among the first through sixth lens element respectively have at least one inflection point on at least one surface thereof. Focal lengths of the first through sixth lens elements are f1, f2, f3, f4, f5 and f6 respectively. A focal length of the optical image capturing system is f. An entrance pupil diameter of the optical image capturing system is HEP. A distance from an object-side surface of the first lens element to the image plane is HOS. A half of maximum view angle of the optical image capturing system is HAF. A horizontal distance in parallel with the optical axis from a coordinate point on the object-side surface of the first lens element at height ½ HEP to the image plane is ETL. A horizontal distance in parallel with the optical axis from a coordinate point on the object-side surface of the first lens element at height ½ HEP to a coordinate point on the image-side surface of the sixth lens element at height ½ HEP is EIN. The following relations are satisfied: 1.0≤f/HEP≤2.2, 0.5≤HOS/f≤1.6, 0.5≤HOS/HOI≤1.6 and 0.2≤EIN/ETL<1.

A thickness of a single lens element at height of ½ entrance pupil diameter (HEP) particularly affects the corrected aberration of common area of each field of view of light and the capability of correcting optical path difference between each field of view of light in the scope of ½ entrance pupil diameter (HEP). The capability of aberration correction is enhanced if the thickness becomes greater, but the difficulty for manufacturing is also increased at the same time. Therefore, it is necessary to control the thickness of a single lens element at height of ½ entrance pupil diameter (HEP), in particular to control the ratio relation (ETP/TP) of the thickness (ETP) of the lens element at height of ½ entrance pupil diameter (HEP) to the thickness (TP) of the lens element to which the surface belongs on the optical axis. For example, the thickness of the first lens element at height of ½ entrance pupil diameter (HEP) is denoted by ETP1. The thickness of the second lens element at height of ½ entrance pupil diameter (HEP) is denoted by ETP2. The thicknesses of other lens elements are denoted in the similar way. A sum of ETP1 to ETP6 described above is SETP. The embodiments of the present invention may satisfy the following relation: 0.3≤SETP/EIN<1.

In order to enhance the capability of aberration correction and reduce the difficulty for manufacturing at the same time, it is particularly necessary to control the ratio relation (ETP/TP) of the thickness (ETP) of the lens element at height of ½ entrance pupil diameter (HEP) to the thickness (TP) of the lens element on the optical axis lens. For example, the thickness of the first lens element at height of ½ entrance pupil diameter (HEP) is denoted by ETP1. The thickness of the first lens element on the optical axis is TP1. The ratio between both of them is ETP1/TP1. The thickness of the second lens element at height of ½ entrance pupil diameter (HEP) is denoted by ETP2. The thickness of the second lens element on the optical axis is TP2. The ratio between both of them is ETP2/TP2. The ratio relations of the thicknesses of other lens element in the optical image capturing system at height of ½ entrance pupil diameter (HEP) to the thicknesses (TP) of the lens elements on the optical axis lens are denoted in the similar way. The embodiments of the present invention may satisfy the following relation: 0.2≤ETP/TP≤3.

A horizontal distance between two adjacent lens elements at height of ½ entrance pupil diameter (HEP) is denoted by ED. The horizontal distance (ED) described above is in parallel with the optical axis of the optical image capturing system and particularly affects the corrected aberration of common area of each field of view of light and the capability of correcting optical path difference between each field of view of light at the position of ½ entrance pupil diameter (HEP). The capability of aberration correction may be enhanced if the horizontal distance becomes greater, but the difficulty for manufacturing is also increased and the degree of ‘miniaturization’ to the length of the optical image capturing system is restricted. Thus, it is essential to control the horizontal distance (ED) between two specific adjacent lens elements at height of ½ entrance pupil diameter (HEP).

In order to enhance the capability of aberration correction and reduce the difficulty for ‘miniaturization’ to the length of the optical image capturing system at the same time, it is particularly necessary to control the ratio relation (ED/IN) of the horizontal distance (ED) between the two adjacent lens elements at height of ½ entrance pupil diameter (HEP) to the horizontal distance (IN) between the two adjacent lens elements on the optical axis. For example, the horizontal distance between the first lens element and the second lens element at height of ½ entrance pupil diameter (HEP) is denoted by ED12. The horizontal distance between the first lens element and the second lens element on the optical axis is IN12. The ratio between both of them is ED12/IN12. The horizontal distance between the second lens element and the third lens element at height of ½ entrance pupil diameter (HEP) is denoted by ED23. The horizontal distance between the second lens element and the third lens element on the optical axis is IN23. The ratio between both of them is ED23/IN23. The ratio relations of the horizontal distances between other two adjacent lens elements in the optical image capturing system at height of ½ entrance pupil diameter (HEP) to the horizontal distances between the two adjacent lens elements on the optical axis are denoted in the similar way.

A horizontal distance in parallel with the optical axis from a coordinate point on the image-side surface of the sixth lens element at height ½ HEP to the image plane is EBL. A horizontal distance in parallel with the optical axis from an axial point on the image-side surface of the sixth lens element to the image plane is BL. The embodiments of the present invention enhance the capability of aberration correction and reserve space for accommodating other optical elements. The following relation may be satisfied: 0.2≤EBL/BL<1.1. The optical image capturing system may further include a light filtration element. The light filtration element is located between the sixth lens element and the image plane. A distance in parallel with the optical axis from a coordinate point on the image-side surface of the sixth lens element at height ½ HEP to the light filtration element is EIR. A distance in parallel with the optical axis from an axial point on the image-side surface of the sixth lens element to the light filtration element is PIR. The embodiments of the present invention may satisfy the following relation: 0.1≤EIR/PIR≤1.1.

The height of optical system (HOS) may be reduced to achieve the minimization of the optical image capturing system when the absolute value of f1 is larger than f6 (|f1|>f6).

When |f2|+|f3|+|f4|+|f5| and |f1|+|f6| are satisfied with above relations, at least one of the second through fifth lens elements may have weak positive refractive power or weak negative refractive power. The weak refractive power indicates that an absolute value of the focal length of a specific lens element is greater than 10. When at least one of the second through fifth lens elements has the weak positive refractive power, the positive refractive power of the first lens element can be shared, such that the unnecessary aberration will not appear too early. On the contrary, when at least one of the second through fifth lens elements has the weak negative refractive power, the aberration of the optical image capturing system can be corrected and fine tuned.

The sixth lens element may have negative refractive power and a concave image-side surface. Hereby, the back focal length is reduced for keeping the miniaturization, to miniaturize the lens element effectively. In addition, at least one of the object-side surface and the image-side surface of the sixth lens element may have at least one inflection point, such that the angle of incident with incoming light from an off-axis field of view can be suppressed effectively and the aberration in the off-axis field of view can be corrected further.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Reference will now be made in detail to the exemplary embodiments of the present disclosure, examples of which are illustrated in the accompanying drawings. Therefore, it is to be understood that the foregoing is illustrative of exemplary embodiments and is not to be construed as limited to the specific embodiments disclosed, and that modifications to the disclosed exemplary embodiments, as well as other exemplary embodiments, are intended to be included within the scope of the appended claims. These embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the inventive concept to those skilled in the art. The relative proportions and ratios of elements in the drawings may be exaggerated or diminished in size for the sake of clarity and convenience in the drawings, and such arbitrary proportions are only illustrative and not limiting in any way. The same reference numbers are used in the drawings and the description to refer to the same or like parts.

It will be understood that, although the terms ‘first’, ‘second’, ‘third’, etc., may be used herein to describe various elements, these elements should not be limited by these terms. The terms are used only for the purpose of distinguishing one component from another component. Thus, a first element discussed below could be termed a second element without departing from the teachings of embodiments. As used herein, the term “or” includes any and all combinations of one or more of the associated listed items.

An optical image capturing system, in order from an object side to an image side, includes a first, second, third, fourth, fifth and sixth lens elements with refractive power and an image plane. The optical image capturing system may further include an image sensing device which is disposed on an image plane.

The optical image capturing system may use three sets of wavelengths which are 486.1 nm, 587.5 nm and 656.2 nm, respectively, wherein 587.5 nm is served as the primary reference wavelength and a reference wavelength for retrieving technical features. The optical image capturing system may also use five sets of wavelengths which are 470 nm, 510 nm, 555 nm, 610 nm and 650 nm, respectively, wherein 555 nm is served as the primary reference wavelength and a reference wavelength for retrieving technical features.

A ratio of the focal length f of the optical image capturing system to a focal length fp of each of lens elements with positive refractive power is PPR. A ratio of the focal length f of the optical image capturing system to a focal length fn of each of lens elements with negative refractive power is NPR. A sum of the PPR of all lens elements with positive refractive power is ΣPPR. A sum of the NPR of all lens elements with negative refractive powers is ΣNPR. It is beneficial to control the total refractive power and the total length of the optical image capturing system when following conditions are satisfied: 0.5≤ΣPPR/|ΣNPR|≤15. Preferably, the following relation may be satisfied: 1≤ΣPPR/|ΣNPR|≤3.0.

The optical image capturing system may further include an image sensing device which is disposed on an image plane. Half of a diagonal of an effective detection field of the image sensing device (imaging height or the maximum image height of the optical image capturing system) is HOI. A distance on the optical axis from the object-side surface of the first lens element to the image plane is HOS. The following relations are satisfied: HOS/HOI≤10 and 0.5≤HOS/f≤10. Preferably, the following relations may be satisfied: 1≤HOS/HOI≤5 and 1≤HOS/f≤7. Hereby, the miniaturization of the optical image capturing system can be maintained effectively, so as to be carried by lightweight portable electronic devices.

In addition, in the optical image capturing system of the disclosure, according to different requirements, at least one aperture stop may be arranged for reducing stray light and improving the imaging quality.

In the optical image capturing system of the disclosure, the aperture stop may be a front or middle aperture. The front aperture is the aperture stop between a photographed object and the first lens element. The middle aperture is the aperture stop between the first lens element and the image plane. If the aperture stop is the front aperture, a longer distance between the exit pupil and the image plane of the optical image capturing system can be formed, such that more optical elements can be disposed in the optical image capturing system and the efficiency of receiving images of the image sensing device can be raised. If the aperture stop is the middle aperture, the view angle of the optical image capturing system can be expended, such that the optical image capturing system has the same advantage that is owned by wide angle cameras. A distance from the aperture stop to the image plane is InS. The following relation is satisfied: 0.2≤InS/HOS≤1.1. Hereby, features of maintaining the minimization for the optical image capturing system and having wide-angle are available simultaneously.

In the optical image capturing system of the disclosure, a distance from the object-side surface of the first lens element to the image-side surface of the sixth lens element is InTL. A sum of central thicknesses of all lens elements with refractive power on the optical axis is ΣTP. The following relation is satisfied: 0.1≤ΣTP/InTL≤0.9. Hereby, contrast ratio for the image formation in the optical image capturing system and defect-free rate for manufacturing the lens element can be given consideration simultaneously, and a proper back focal length is provided to dispose other optical components in the optical image capturing system.

A curvature radius of the object-side surface of the first lens element is R1. A curvature radius of the image-side surface of the first lens element is R2. The following relation is satisfied: 0.001≤|R1/R2|≤20. Hereby, the first lens element may have proper strength of the positive refractive power, so as to avoid the longitudinal spherical aberration to increase too fast. Preferably, the following relation may be satisfied: 0.01≤|R1/R2|<10.

A curvature radius of the object-side surface of the sixth lens element is R11. A curvature radius of the image-side surface of the sixth lens element is R12. The following relation is satisfied: −7<(R11−R12)/(R11+R12)<50. Hereby, the astigmatism generated by the optical image capturing system can be corrected beneficially.

A distance between the first lens element and the second lens element on the optical axis is IN12. The following relation is satisfied: IN12/f≤3.0. Hereby, the chromatic aberration of the lens elements can be improved, such that the performance can be increased.

A distance between the fifth lens element and the sixth lens element on the optical axis is IN56. The following relation is satisfied: IN56/f≤0.8. Hereby, the chromatic aberration of the lens elements can be improved, such that the performance can be increased.

Central thicknesses of the first lens element and the second lens element on the optical axis are TP1 and TP2, respectively. The following relation is satisfied: 0.1≤(TP1+IN12)/TP2≤10. Hereby, the sensitivity produced by the optical image capturing system can be controlled, and the performance can be increased.

Central thicknesses of the fifth lens element and the sixth lens element on the optical axis are TP5 and TP6, respectively, and a distance between the aforementioned two lens elements on the optical axis is IN56. The following relation is satisfied: 0.1≤(TP6+IN56)/TP5≤10. Hereby, the sensitivity produced by the optical image capturing system can be controlled and the total height of the optical image capturing system can be reduced.

Central thicknesses of the second lens element, the third lens element and the fourth lens element on the optical axis are TP2, TP3 and TP4, respectively. A distance between the second lens element and the third lens element on the optical axis is IN23. A distance between the third lens element and the fourth lens element on the optical axis is IN34. A distance between the fourth lens element and the fifth lens element on the optical axis is IN45. A distance on the optical axis from the object-side surface of the first lens element to the image-side surface of the sixth lens element is InTL The following relation is satisfied: 0.1≤TP4/(IN34+TP4+IN45)≤1. Hereby, the aberration generated by the process of moving the incident light can be adjusted slightly layer upon layer, and the total height of the optical image capturing system can be reduced.

In the optical image capturing system of the disclosure, a distance perpendicular to the optical axis between a critical point C61 on the object-side surface of the sixth lens element and the optical axis is HVT61. A distance perpendicular to the optical axis between a critical point C62 on the image-side surface of the sixth lens element and the optical axis is HVT62. A horizontal displacement distance on the optical axis from an axial point on the object-side surface of the sixth lens element to the critical point C61 is SGC61. A horizontal displacement distance on the optical axis from an axial point on the image-side surface of the sixth lens element to the critical point C62 is SGC62. The following relations may be satisfied: 0 mm≤HVT61≤3 mm, 0 mm<HVT62≤6 mm, 0≤HVT61/HVT62, 0 mm≤|SGC61|≤0.5 mm, 0 mm<|SGC62|≤2 mm and 0<|SGC62|/(|SGC62|+TP6)≤0.9. Hereby, the aberration in the off-axis view field can be corrected.

The optical image capturing system of the disclosure satisfies the following relation: 0.2≤HVT62/HOI≤0.9. Preferably, the following relation may be satisfied: 0.3≤HVT62/HOI≤0.8. Hereby, the aberration of surrounding view field can be corrected.

The optical image capturing system of the disclosure satisfies the following relation: 0≤HVT62/HOS≤0.5. Preferably, the following relation may be satisfied: 0.2≤HVT62/HOS≤0.45. Hereby, the aberration of surrounding view field can be corrected.

In the optical image capturing system of the disclosure, a distance in parallel with an optical axis from an inflection point on the object-side surface of the sixth lens element which is nearest to the optical axis to an axial point on the object-side surface of the sixth lens element is denoted by SGI611. A distance in parallel with an optical axis from an inflection point on the image-side surface of the sixth lens element which is nearest to the optical axis to an axial point on the image-side surface of the sixth lens element is denoted by SGI621. The following relations are satisfied: 0<SGI611/(SGI611+TP6)≤0.9 and 0<SGI621/(SGI621+TP6)≤0.9. Preferably, the following relations may be satisfied: 0.1≤SGI611/(SGI611+TP6)≤0.6 and 0.1≤SGI62/(SGI621+TP6)≤0.6.

A distance in parallel with the optical axis from the inflection point on the object-side surface of the sixth lens element which is the second nearest to the optical axis to an axial point on the object-side surface of the sixth lens element is denoted by SGI612. A distance in parallel with an optical axis from an inflection point on the image-side surface of the sixth lens element which is the second nearest to the optical axis to an axial point on the image-side surface of the sixth lens element is denoted by SGI622. The following relations are satisfied: 0<SGI612/(SGI612+TP6)≤0.9 and 0<SGI622/(SGI622+TP6)≤0.9. Preferably, the following relations may be satisfied: 0.1≤SGI612/(SGI612+TP6)≤0.6 and 0.1≤SGI622/(SGI622+TP6)≤0.6.

A distance perpendicular to the optical axis between the inflection point on the object-side surface of the sixth lens element which is nearest to the optical axis and the optical axis is denoted by HIF611. A distance perpendicular to the optical axis between an inflection point on the image-side surface of the sixth lens element which is nearest to the optical axis and an axial point on the image-side surface of the sixth lens element is denoted by HIF621. The following relations are satisfied: 0.001 mm≤|HIF611|≤5 mm and 0.001 mm≤|HIF621|≤5 mm. Preferably, the following relations may be satisfied: 0.1 mm≤|HIF611|≤3.5 mm and 1.5 mm≤|HIF621|≤3.5 mm.

A distance perpendicular to the optical axis between the inflection point on the object-side surface of the sixth lens element which is the second nearest to the optical axis and the optical axis is denoted by HIF612. A distance perpendicular to the optical axis between an axial point on the image-side surface of the sixth lens element and an inflection point on the image-side surface of the sixth lens element which is the second nearest to the optical axis is denoted by HIF622. The following relations are satisfied: 0.001 mm≤|HIF612|≤5 mm and 0.001 mm≤|HIF622|≤5 mm. Preferably, the following relations may be satisfied: 0.1 mm≤|HIF622|≤3.5 mm and 0.1 mm≤|HIF612|≤3.5 mm.

A distance perpendicular to the optical axis between the inflection point on the object-side surface of the sixth lens element which is the third nearest to the optical axis and the optical axis is denoted by HIF613. A distance perpendicular to the optical axis between an axial point on the image-side surface of the sixth lens element and an inflection point on the image-side surface of the sixth lens element which is the third nearest to the optical axis is denoted by HIF623. The following relations are satisfied: 0.001 mm≤|HIF613|≤5 mm and 0.001 mm≤|HIF623|≤5 mm. Preferably, the following relations may be satisfied: 0.1 mm≤|HIF623|≤3.5 mm and 0.1 mm≤|HIF613|≤3.5 mm.

A distance perpendicular to the optical axis between the inflection point on the object-side surface of the sixth lens element which is the fourth nearest to the optical axis and the optical axis is denoted by HIF614. A distance perpendicular to the optical axis between an axial point on the image-side surface of the sixth lens element and an inflection point on the image-side surface of the sixth lens element which is the fourth nearest to the optical axis is denoted by HIF624. The following relations are satisfied: 0.001 mm≤|HIF614|≤5 mm and 0.001 mm≤|HIF624|≤5 mm. Preferably, the following relations may be satisfied: 0.1 mm≤|HIF624|≤3.5 mm and 0.1 mm≤|HIF614|≤3.5 mm.

In one embodiment of the optical image capturing system of the present disclosure, the chromatic aberration of the optical image capturing system can be corrected by alternatively arranging the lens elements with large Abbe number and small Abbe number.

The above Aspheric formula is:
z=ch2/[1+[1−(k+1)c2h2]0.5]+A4h4+A6h6+A8h8+A10h10+A12h12+A14h14+A16h16+A18h18+A20h20+ . . .  (1),
where z is a position value of the position along the optical axis and at the height h which reference to the surface apex; k is the conic coefficient, c is the reciprocal of curvature radius, and A4, A6, A8, A10, A12, A14, A16, A18, and A20 are high order aspheric coefficients.

The optical image capturing system provided by the disclosure, the lens elements may be made of glass or plastic material. If plastic material is adopted to produce the lens elements, the cost of manufacturing will be lowered effectively. If lens elements are made of glass, the heat effect can be controlled and the designed space arranged for the refractive power of the optical image capturing system can be increased. Besides, the object-side surface and the image-side surface of the first through sixth lens elements may be aspheric, so as to obtain more control variables. Comparing with the usage of traditional lens element made by glass, the number of lens elements used can be reduced and the aberration can be eliminated. Thus, the total height of the optical image capturing system can be reduced effectively.

In addition, in the optical image capturing system provided by the disclosure, if the lens element has a convex surface, the surface of the lens element adjacent to the optical axis is convex in principle. If the lens element has a concave surface, the surface of the lens element adjacent to the optical axis is concave in principle.

The optical image capturing system of the disclosure can be adapted to the optical image capturing system with automatic focus if required. With the features of a good aberration correction and a high quality of image formation, the optical image capturing system can be used in various application fields.

The optical image capturing system of the disclosure can include a driving module according to the actual requirements. The driving module may be coupled with the lens elements to enable the lens elements producing displacement. The driving module may be the voice coil motor (VCM) which is applied to move the lens to focus, or may be the optical image stabilization (OIS) which is applied to reduce the distortion frequency owing to the vibration of the lens while shooting.

At least one of the first, second, third, fourth, fifth and sixth lens elements of the optical image capturing system of the disclosure may further be designed as a light filtration element with a wavelength of less than 500 nm according to the actual requirement. The light filtration element may be made by coating at least one surface of the specific lens element characterized of the filter function, and alternatively, may be made by the lens element per se made of the material which is capable of filtering short wavelength.

The image plane of the optical image capturing system according to the present application may be a plane or a curved surface based on the actual requirement. When the image plane is a curved surface such as a spherical surface with a radius of curvature, the angle of incidence which is necessary for focusing light on the image plane can be reduced. Hence, it not only contributes to shortening the length of the optical image capturing system, but also to promote the relative illuminance.

According to the above embodiments, the specific embodiments with figures are presented in detail as below.

The First Embodiment (Embodiment 1)

Please refer toFIG. 1AandFIG. 1B.FIG. 1Ais a schematic view of the optical image capturing system according to the first embodiment of the present application,FIG. 1Bis longitudinal spherical aberration curves, astigmatic field curves, and an optical distortion curve of the optical image capturing system in the order from left to right according to the first embodiment of the present application, andFIG. 1Cis a characteristic diagram of modulation transfer of a visible light according to the first embodiment of the present application. As shown inFIG. 1A, in order from an object side to an image side, the optical image capturing system includes a first lens element110, an aperture stop100, a second lens element120, a third lens element130, a fourth lens element140, a fifth lens element150, a sixth lens element160, an IR-bandstop filter180, an image plane190, and an image sensing device192.

The first lens element110has negative refractive power and it is made of plastic material. The first lens element110has a concave object-side surface112and a concave image-side surface114, and both of the object-side surface112and the image-side surface114are aspheric. The object-side surface112has two inflection points. The thickness of the first lens element on the optical axis is TP1. The thickness of the first lens element at height of ½ entrance pupil diameter (HEP) is denoted by ETP1.

A distance in parallel with an optical axis from an inflection point on the object-side surface of the first lens element which is nearest to the optical axis to an axial point on the object-side surface of the first lens element is denoted by SGI111. A distance in parallel with an optical axis from an inflection point on the image-side surface of the first lens element which is nearest to the optical axis to an axial point on the image-side surface of the first lens element is denoted by SGI121. The following relations are satisfied: SGI111=−0.0031 mm and |SGI111|/(|SGI111+TP1)=0.0016.

A distance in parallel with an optical axis from an inflection point on the object-side surface of the first lens element which is the second nearest to the optical axis to an axial point on the object-side surface of the first lens element is denoted by SGI112. A distance in parallel with an optical axis from an inflection point on the image-side surface of the first lens element which is the second nearest to the optical axis to an axial point on the image-side surface of the first lens element is denoted by SGI1122. The following relations are satisfied: SGI112=1.3178 mm and |SGI112|/(|SGI112|+TP1)=0.4052.

A distance perpendicular to the optical axis from the inflection point on the object-side surface of the first lens element which is nearest to the optical axis to an axial point on the object-side surface of the first lens element is denoted by HIF111. A distance perpendicular to the optical axis from the inflection point on the image-side surface of the first lens element which is nearest to the optical axis to an axial point on the image-side surface of the first lens element is denoted by HIF121. The following relations are satisfied: HIF111=0.5557 mm and HIF111/HOI=0.1111.

A distance perpendicular to the optical axis from the inflection point on the object-side surface of the first lens element which is the second nearest to the optical axis to an axial point on the object-side surface of the first lens element is denoted by HIF112. A distance perpendicular to the optical axis from the inflection point on the image-side surface of the first lens element which is the second nearest to the optical axis to an axial point on the image-side surface of the first lens element is denoted by HIF122. The following relations are satisfied: HIF112=5.3732 mm and HIF112/HOI=1.0746.

The second lens element120has positive refractive power and it is made of plastic material. The second lens element120has a convex object-side surface122and a convex image-side surface124, and both of the object-side surface122and the image-side surface124are aspheric. The object-side surface122has an inflection point. The thickness of the second lens element on the optical axis is TP2. The thickness of the second lens element at height of ½ entrance pupil diameter (HEP) is denoted by ETP2.

A distance in parallel with an optical axis from an inflection point on the object-side surface of the second lens element which is nearest to the optical axis to an axial point on the object-side surface of the second lens element is denoted by SGI211. A distance in parallel with an optical axis from an inflection point on the image-side surface of the second lens element which is nearest to the optical axis to an axial point on the image-side surface of the second lens element is denoted by SGI221. The following relations are satisfied: SGI211=0.1069 mm, |SGI211|/(|SGI211|+TP2)=0.0412, SGI221=0 mm and |SGI221|/(|SGI221|+TP2)=0.

A distance perpendicular to the optical axis from the inflection point on the object-side surface of the second lens element which is nearest to the optical axis to an axial point on the object-side surface of the second lens element is denoted by HIF211. A distance perpendicular to the optical axis from the inflection point on the image-side surface of the second lens element which is nearest to the optical axis to an axial point on the image-side surface of the second lens element is denoted by HIF221. The following relations are satisfied: HIF211=1.1264 mm, HIF211/HOI=0.2253, HIF221=0 mm and HIF221/HOI=0.

The third lens element130has negative refractive power and it is made of plastic material. The third lens element130has a concave object-side surface132and a convex image-side surface134, and both of the object-side surface132and the image-side surface134are aspheric. The object-side surface132and the image-side surface134both have an inflection point. The thickness of the third lens element on the optical axis is TP3. The thickness of the third lens element at height of ½ entrance pupil diameter (HEP) is denoted by ETP3.

A distance in parallel with an optical axis from an inflection point on the object-side surface of the third lens element which is nearest to the optical axis to an axial point on the object-side surface of the third lens element is denoted by SGI311. A distance in parallel with an optical axis from an inflection point on the image-side surface of the third lens element which is nearest to the optical axis to an axial point on the image-side surface of the third lens element is denoted by SGI321. The following relations are satisfied: SGI311=−0.3041 mm, |SGI311|/(|SGI311|+TP3)=0.4445, SGI321=−0.1172 mm and |SGI321|/(|SGI321|+TP3)=0.2357.

A distance perpendicular to the optical axis between the inflection point on the object-side surface of the third lens element which is nearest to the optical axis and the optical axis is denoted by HIF311. A distance perpendicular to the optical axis from the inflection point on the image-side surface of the third lens element which is nearest to the optical axis to an axial point on the image-side surface of the third lens element is denoted by HIF321. The following relations are satisfied: HIF311=1.5907 mm, HIF311/HOI=0.3181, HIF321=1.3380 mm and HIF321/HOI=0.2676.

The fourth lens element140has positive refractive power and it is made of plastic material. The fourth lens element140has a convex object-side surface142and a concave image-side surface144, and both of the object-side surface142and the image-side surface144are aspheric. The object-side surface142has two inflection points and the image-side surface144has an inflection point. The thickness of the fourth lens element on the optical axis is TP4. The thickness of the fourth lens element at height of ½ entrance pupil diameter (HEP) is denoted by ETP4.

A distance in parallel with an optical axis from an inflection point on the object-side surface of the fourth lens element which is nearest to the optical axis to an axial point on the object-side surface of the fourth lens element is denoted by SGI411. A distance in parallel with an optical axis from an inflection point on the image-side surface of the fourth lens element which is nearest to the optical axis to an axial point on the image-side surface of the fourth lens element is denoted by SGI421. The following relations are satisfied: SGI411=0.0070 mm, |SGI411|/(|SGI411|+TP4)=0.0056, SGI421=0.0006 mm and |SGI421|/(|SGI421|+TP4)=0.0005.

A distance in parallel with an optical axis from an inflection point on the object-side surface of the fourth lens element which is the second nearest to the optical axis to an axial point on the object-side surface of the fourth lens element is denoted by SGI412. A distance in parallel with an optical axis from an inflection point on the image-side surface of the fourth lens element which is the second nearest to the optical axis to an axial point on the image-side surface of the fourth lens element is denoted by SGI422. The following relations are satisfied: SGI412=−0.2078 mm and |SGI412|/(|SGI412|+TP4)=0.1439.

A distance perpendicular to the optical axis between the inflection point on the object-side surface of the fourth lens element which is nearest to the optical axis and the optical axis is denoted by HIF411. A distance perpendicular to the optical axis between the inflection point on the image-side surface of the fourth lens element which is nearest to the optical axis and the optical axis is denoted by HIF421. The following relations are satisfied: HIF411=0.4706 mm, HIF411/HOI=0.0941, HIF421=0.1721 mm and HIF421/HOI=0.0344.

A distance perpendicular to the optical axis between the inflection point on the object-side surface of the fourth lens element which is the second nearest to the optical axis and the optical axis is denoted by HIF412. A distance perpendicular to the optical axis between the inflection point on the image-side surface of the fourth lens element which is the second nearest to the optical axis and the optical axis is denoted by HIF422. The following relations are satisfied: HIF412=2.0421 mm and HIF412/HOI=0.4084.

The fifth lens element150has positive refractive power and it is made of plastic material. The fifth lens element150has a convex object-side surface152and a convex image-side surface154, and both of the object-side surface152and the image-side surface154are aspheric. The object-side surface152has two inflection points and the image-side surface154has an inflection point. The thickness of the fifth lens element on the optical axis is TP5. The thickness of the fifth lens element at height of ½ entrance pupil diameter (HEP) is denoted by ETP5.

A distance in parallel with an optical axis from an inflection point on the object-side surface of the fifth lens element which is nearest to the optical axis to an axial point on the object-side surface of the fifth lens element is denoted by SGI511. A distance in parallel with an optical axis from an inflection point on the image-side surface of the fifth lens element which is nearest to the optical axis to an axial point on the image-side surface of the fifth lens element is denoted by SGI521. The following relations are satisfied: SGI511=0.00364 mm, |SGI511|/(|SGI511|+TP5)=0.00338, SGI521=−0.63365 mm and |SGI521|/(|SGI521|+TP5)=0.37154.

A distance in parallel with an optical axis from an inflection point on the object-side surface of the fifth lens element which is the second nearest to the optical axis to an axial point on the object-side surface of the fifth lens element is denoted by SGI512. A distance in parallel with an optical axis from an inflection point on the image-side surface of the fifth lens element which is the second nearest to the optical axis to an axial point on the image-side surface of the fifth lens element is denoted by SGI522. The following relations are satisfied: SGI512=−0.32032 mm and |SGI512|/(|SGI512|+TP5)=0.23009.

A distance in parallel with an optical axis from an inflection point on the object-side surface of the fifth lens element which is the third nearest to the optical axis to an axial point on the object-side surface of the fifth lens element is denoted by SGI513. A distance in parallel with an optical axis from an inflection point on the image-side surface of the fifth lens element which is the third nearest to the optical axis to an axial point on the image-side surface of the fifth lens element is denoted by SGI523. The following relations are satisfied: SGI513=0 mm, |SGI513|/(|SGI513|+TP5)=0, SG1523=0 mm and |SGI523|/(|SGI523|+TP5)=0.

A distance in parallel with an optical axis from an inflection point on the object-side surface of the fifth lens element which is the fourth nearest to the optical axis to an axial point on the object-side surface of the fifth lens element is denoted by SGI514. A distance in parallel with an optical axis from an inflection point on the image-side surface of the fifth lens element which is the fourth nearest to the optical axis to an axial point on the image-side surface of the fifth lens element is denoted by SGI524. The following relations are satisfied: SGI514=0 mm, |SGI514|/(|SGI514|+TP5)=0, SGI524=0 mm and |SGI524|/(|SGI524|+TP5)=0.

A distance perpendicular to the optical axis between the inflection point on the object-side surface of the fifth lens element which is nearest to the optical axis and the optical axis is denoted by HIF511. A distance perpendicular to the optical axis between the inflection point on the image-side surface of the fifth lens element which is nearest to the optical axis and the optical axis is denoted by HIF521. The following relations are satisfied: HIF511=0.28212 mm, HIF511/HOI=0.05642, HIF521=2.13850 mm and HIF521/HOI=0.42770.

A distance perpendicular to the optical axis between the inflection point on the object-side surface of the fifth lens element which is the second nearest to the optical axis and the optical axis is denoted by HIF512. A distance perpendicular to the optical axis between the inflection point on the image-side surface of the fifth lens element which is the second nearest to the optical axis and the optical axis is denoted by HIF522. The following relations are satisfied: HIF512=2.51384 mm and HIF512/HOI=0.50277.

A distance perpendicular to the optical axis between the inflection point on the object-side surface of the fifth lens element which is the third nearest to the optical axis and the optical axis is denoted by HIF513. A distance perpendicular to the optical axis between the inflection point on the image-side surface of the fifth lens element which is the third nearest to the optical axis and the optical axis is denoted by HIF523. The following relations are satisfied: HIF513=0 mm, HIF513/HOI=0, HIF523=0 mm and HIF523/HOI=0.

A distance perpendicular to the optical axis between the inflection point on the object-side surface of the fifth lens element which is the fourth nearest to the optical axis and the optical axis is denoted by HIF514. A distance perpendicular to the optical axis between the inflection point on the image-side surface of the fifth lens element which is the fourth nearest to the optical axis and the optical axis is denoted by HIF524. The following relations are satisfied: HIF514=0 mm, HIF514/HOI=0, HIF524=0 mm and HIF524/HOI=0.

The sixth lens element160has negative refractive power and it is made of plastic material. The sixth lens element160has a concave object-side surface162and a concave image-side surface164, and the object-side surface162has two inflection points and the image-side surface164has an inflection point. Hereby, the angle of incident of each view field on the sixth lens element can be effectively adjusted and the spherical aberration can thus be improved. The thickness of the sixth lens element on the optical axis is TP6. The thickness of the sixth lens element at height of ½ entrance pupil diameter (HEP) is denoted by ETP6.

A distance in parallel with an optical axis from an inflection point on the object-side surface of the sixth lens element which is nearest to the optical axis to an axial point on the object-side surface of the sixth lens element is denoted by SGI611. A distance in parallel with an optical axis from an inflection point on the image-side surface of the sixth lens element which is nearest to the optical axis to an axial point on the image-side surface of the sixth lens element is denoted by SGI621. The following relations are satisfied: SGI611=−0.38558 mm, |SGI611|/(|SGI611|+TP6)=0.27212, SGI621=0.12386 mm and |SGI621|/(|SGI621|+TP6)=0.10722.

A distance in parallel with an optical axis from an inflection point on the object-side surface of the sixth lens element which is the second nearest to the optical axis to an axial point on the object-side surface of the sixth lens element is denoted by SGI612. A distance in parallel with an optical axis from an inflection point on the image-side surface of the sixth lens element which is the second nearest to the optical axis to an axial point on the image-side surface of the sixth lens element is denoted by SGI621. The following relations are satisfied: SGI612=−0.47400 mm, |SGI612|/(|SGI612|+TP6)=0.31488, SGI622=0 mm and |SGI622|/(|SGI622|+TP6)=0.

A distance perpendicular to the optical axis between the inflection point on the object-side surface of the sixth lens element which is nearest to the optical axis and the optical axis is denoted by HIF611. A distance perpendicular to the optical axis between the inflection point on the image-side surface of the sixth lens element which is nearest to the optical axis and the optical axis is denoted by HIF621. The following relations are satisfied: HIF611=2.24283 mm, HIF611/HOI=0.44857, HIF621=1.07376 mm and HIF621/HOI=0.21475.

A distance perpendicular to the optical axis between the inflection point on the object-side surface of the sixth lens element which is the second nearest to the optical axis and the optical axis is denoted by HIF612. A distance perpendicular to the optical axis between the inflection point on the image-side surface of the sixth lens element which is the second nearest to the optical axis and the optical axis is denoted by HIF622. The following relations are satisfied: HIF612=2.48895 mm and HIF612/HOI=0.49779.

A distance perpendicular to the optical axis between the inflection point on the object-side surface of the sixth lens element which is the third nearest to the optical axis and the optical axis is denoted by HIF613. A distance perpendicular to the optical axis between the inflection point on the image-side surface of the sixth lens element which is the third nearest to the optical axis and the optical axis is denoted by HIF623. The following relations are satisfied: HIF613=0 mm, HIF613/HOI=0, HIF623=0 mm and HIF623/HOI=0.

A distance perpendicular to the optical axis between the inflection point on the object-side surface of the sixth lens element which is the fourth nearest to the optical axis and the optical axis is denoted by HIF614. A distance perpendicular to the optical axis between the inflection point on the image-side surface of the sixth lens element which is the fourth nearest to the optical axis and the optical axis is denoted by HIF624. The following relations are satisfied: HIF614=0 mm, HIF614/HOI=0, HIF624=0 mm and HIF624/HOI=0.

In the first embodiment, a horizontal distance in parallel with the optical axis from a coordinate point on the object-side surface of the first lens element at height ½ HEP to the image plane is ETL. A horizontal distance in parallel with the optical axis from a coordinate point on the object-side surface of the first lens element at height ½ HEP to a coordinate point on the image-side surface of the sixth lens element at height ½ HEP is EIN. The following relations are satisfied: ETL=19.304 mm, EIN=15.733 mm and EIN/ETL=0.815.

The present embodiment particularly controls the ratio relation (ETP/TP) of the thickness (ETP) of each lens element at height of ½ entrance pupil diameter (HEP) to the thickness (TP) of the lens element to which the surface belongs on the optical axis in order to achieve a balance between manufacturability and capability of aberration correction. The following relations are satisfied: ETP1/TP1=1.149, ETP2/TP2=0.854, ETP3/TP3=1.308, ETP4/TP4=0.936, ETP5/TP5=0.817 and ETP6/TP6=1.271.

The present embodiment controls a horizontal distance between each two adjacent lens elements at height of ½ entrance pupil diameter (HEP) to achieve a balance between the degree of miniaturization for the length of the optical image capturing system HOS, the manufacturability and the capability of aberration correction. The ratio relation (ED/IN) of the horizontal distance (ED) between the two adjacent lens elements at height of ½ entrance pupil diameter (HEP) to the horizontal distance (IN) between the two adjacent lens elements on the optical axis is particularly controlled. The following relations are satisfied: a horizontal distance in parallel with the optical axis between the first lens element and the second lens element at height of ½ entrance pupil diameter (HEP) ED12=5.285 mm; a horizontal distance in parallel with the optical axis between the second lens element and the third lens element at height of ½ entrance pupil diameter (HEP) ED23=0.283 mm; a horizontal distance in parallel with the optical axis between the third lens element and the fourth lens element at height of ½ entrance pupil diameter (HEP) ED34=0.330 mm; a horizontal distance in parallel with the optical axis between the fourth lens element and the fifth lens element at height of ½ entrance pupil diameter (HEP) ED45=0.348 mm; a horizontal distance in parallel with the optical axis between the fifth lens element and the sixth lens element at height of ½ entrance pupil diameter (HEP) ED56=0.187 mm. A sum of ED12 to ED56 described above is denoted as SED and SED=6.433 mm.

The horizontal distance between the first lens element and the second lens element on the optical axis IN12=5.470 mm and ED12/IN12=0.966. The horizontal distance between the second lens element and the third lens element on the optical axis IN23=0.178 mm and ED23/IN23=1.590. The horizontal distance between the third lens element and the fourth lens element on the optical axis IN34=0.259 mm and ED34/IN34=1.273. The horizontal distance between the fourth lens element and the fifth lens element on the optical axis IN45=0.209 mm and ED45/IN45=1.664. The horizontal distance between the fifth lens element and the sixth lens element on the optical axis IN56=0.034 mm and ED56/IN56=5.557. A sum of IN12 to IN56 described above is denoted as SIN. SIN=6.150 mm. SED/SIN=1.046.

A horizontal distance in parallel with the optical axis from a coordinate point on the image-side surface of the sixth lens element at height ½ HEP to the image plane EBL=3.570 mm. A horizontal distance in parallel with the optical axis from an axial point on the image-side surface of the sixth lens element to the image plane BL=4.032 mm. The embodiment of the present invention may satisfy the following relation: EBL/BL=0.8854. In the present invention, a distance in parallel with the optical axis from a coordinate point on the image-side surface of the sixth lens element at height ½ HEP to the IR-bandstop filter EIR=1.950 mm. A distance in parallel with the optical axis from an axial point on the image-side surface of the sixth lens element to the IR-bandstop filter PIR=2.121 mm. The following relation is satisfied: EIR/PIR=0.920.

The IR-bandstop filter180is made of glass material without affecting the focal length of the optical image capturing system and it is disposed between the sixth lens element160and the image plane190.

In the optical image capturing system of the first embodiment, a focal length of the optical image capturing system is f, an entrance pupil diameter of the optical image capturing system is HEP, and half of a maximal view angle of the optical image capturing system is HAF. The detailed parameters are shown as below: f=4.075 mm, f/HEP=1.4, HAF=50.001′ and tan(HAF)=1.1918.

In the optical image capturing system of the first embodiment, a focal length of the first lens element110is f1 and a focal length of the sixth lens element160is f6. The following relations are satisfied: f1=−7.828 mm, |f/f1|=0.52060, f6=−4.886 and |f1|>|f6|.

In the optical image capturing system of the first embodiment, focal lengths of the second lens element120to the fifth lens element150are f2, f3, f4 and f5, respectively. The following relations are satisfied: |f2|+|f3|+|f4|+|f5|=95.50815 mm, |f1|+|f6|=12.71352 mm and |f2|+|f3|+|f4|+|f5|>|f1|+|f6|.

A ratio of the focal length f of the optical image capturing system to a focal length fp of each of lens elements with positive refractive power is PPR. A ratio of the focal length f of the optical image capturing system to a focal length fn of each of lens elements with negative refractive power is NPR. In the optical image capturing system of the first embodiment, a sum of the PPR of all lens elements with positive refractive power is ΣPPR=f/f1+f/f3+f/f5=1.63290. A sum of the NPR of all lens elements with negative refractive powers is ΣNPR=|f/f1|+|f/f3|+|f/f6|=1.51305, ΣPPR/|ΣNPR|=1.07921. The following relations are also satisfied: f/f2=0.69101, |f/f3|=0.15834, |f/f4|=0.06883, |f/f5|=0.87305 and |f/f6|=0.83412.

In the optical image capturing system of the first embodiment, a distance from the object-side surface112of the first lens element to the image-side surface164of the sixth lens element is InTL. A distance from the object-side surface112of the first lens element to the image plane190is HOS. A distance from an aperture100to an image plane190is InS. Half of a diagonal length of an effective detection field of the image sensing device192is HOI. A distance from the image-side surface164of the sixth lens element to the image plane190is BFL. The following relations are satisfied: InTL+BFL=HOS, HOS=19.54120 mm, HOI=5.0 mm, HOS/HOI=3.90824, HOS/f=4.7952, InS=11.685 mm and InS/HOS=0.59794.

In the optical image capturing system of the first embodiment, a total central thickness of all lens elements with refractive power on the optical axis is ΣTP. The following relations are satisfied: ΣTP=8.13899 mm and ΣTP/InTL=0.52477. Hereby, contrast ratio for the image formation in the optical image capturing system and defect-free rate for manufacturing the lens element can be given consideration simultaneously, and a proper back focal length is provided to dispose other optical components in the optical image capturing system.

In the optical image capturing system of the first embodiment, a curvature radius of the object-side surface112of the first lens element is R1. A curvature radius of the image-side surface114of the first lens element is R2. The following relation is satisfied: |R1/R2|=8.99987. Hereby, the first lens element may have proper strength of the positive refractive power, so as to avoid the longitudinal spherical aberration to increase too fast.

In the optical image capturing system of the first embodiment, a curvature radius of the object-side surface162of the sixth lens element is R11. A curvature radius of the image-side surface164of the sixth lens element is R12. The following relation is satisfied: (R11−R12)/(R1+R12)=1.27780. Hereby, the astigmatism generated by the optical image capturing system can be corrected beneficially.

In the optical image capturing system of the first embodiment, a sum of focal lengths of all lens elements with positive refractive power is ΣPP. The following relations are satisfied: ΣPP=f1+f3+f5=69.770 mm and f5/(f2+f4+f5)=0.067. Hereby, it is favorable for allocating the positive refractive power of a single lens element to other positive lens elements and the significant aberrations generated in the process of moving the incident light can be suppressed.

In the optical image capturing system of the first embodiment, a sum of focal lengths of all lens elements with negative refractive power is ΣNP. The following relations are satisfied: ΣNP=f1+f3+f6=−38.451 mm and f6/(f1+f3+f6)=0.127. Hereby, it is favorable for allocating the positive refractive power of the sixth lens element160to other negative lens elements and the significant aberrations generated in the process of moving the incident light can be suppressed.

In the optical image capturing system of the first embodiment, a distance between the first lens element110and the second lens element120on the optical axis is IN12. The following relations are satisfied: IN12=6.418 mm and IN12/f=1.57491. Hereby, the chromatic aberration of the lens elements can be improved, such that the performance can be increased.

In the optical image capturing system of the first embodiment, a distance between the fifth lens element150and the sixth lens element160on the optical axis is IN56. The following relations are satisfied: IN56=0.025 mm and IN56/f=0.00613. Hereby, the chromatic aberration of the lens elements can be improved, such that the performance can be increased.

In the optical image capturing system of the first embodiment, central thicknesses of the first lens element110and the second lens element120on the optical axis are TP1 and TP2, respectively. The following relations are satisfied: TP1=1.934 mm. TP2=2.486 mm and (TP1+IN12)/TP2=3.36005. Hereby, the sensitivity produced by the optical image capturing system can be controlled, and the performance can be increased.

In the optical image capturing system of the first embodiment, central thicknesses of the fifth lens element150and the sixth lens element160on the optical axis are TP5 and TP6, respectively, and a distance between the aforementioned two lens elements on the optical axis is IN56. The following relations are satisfied: TP5=1.072 mm, TP6=1.031 mm and (TP6+IN56)/TP5=0.98555. Hereby, the sensitivity produced by the optical image capturing system can be controlled and the total height of the optical image capturing system can be reduced.

In the optical image capturing system of the first embodiment, a distance between the third lens element130and the fourth lens element140on the optical axis is IN34. A distance between the fourth lens element140and the fifth lens element150on the optical axis is IN45. The following relations are satisfied: IN34=0.401 mm, IN45=0.025 mm and TP4/(IN34+TP4+IN45)=0.74376. Hereby, the aberration generated by the process of moving the incident light can be adjusted slightly layer upon layer, and the total height of the optical image capturing system can be reduced.

In the optical image capturing system of the first embodiment, a distance in parallel with an optical axis from a maximum effective half diameter position to an axial point on the object-side surface152of the fifth lens element is InRS51. A distance in parallel with an optical axis from a maximum effective half diameter position to an axial point on the image-side surface154of the fifth lens element is InRS52. A central thickness of the fifth lens element150is TP5. The following relations are satisfied: InRS51=−0.34789 mm, InRS52=−0.88185 mm, |InRS51|/TP5=0.32458 and |InRS52|/TP5=0.82276. Hereby, it is favorable for manufacturing and forming the lens element and for maintaining the minimization for the optical image capturing system.

In the optical image capturing system of the first embodiment, a distance perpendicular to the optical axis between a critical point C51 on the object-side surface152of the fifth lens element and the optical axis is HVT51. A distance perpendicular to the optical axis between a critical point C52 on the image-side surface154of the fifth lens element and the optical axis is HVT52. The following relations are satisfied: HVT51=0.515349 mm and HVT52=0 mm.

In the optical image capturing system of the first embodiment, a distance in parallel with an optical axis from a maximum effective half diameter position to an axial point on the object-side surface162of the sixth lens element is InRS61. A distance in parallel with an optical axis from a maximum effective half diameter position to an axial point on the image-side surface164of the sixth lens element is InRS62. A central thickness of the sixth lens element160is TP6. The following relations are satisfied: InRS61=−0.58390 mm, InRS62=0.41976 mm, |InRS61|/TP6=0.56616 and |InRS62|/TP6=0.40700. Hereby, it is favorable for manufacturing and forming the lens element and for maintaining the minimization for the optical image capturing system.

In the optical image capturing system of the first embodiment, a distance perpendicular to the optical axis between a critical point C61 on the object-side surface162of the sixth lens element and the optical axis is HVT61. A distance perpendicular to the optical axis between a critical point C62 on the image-side surface164of the sixth lens element and the optical axis is HVT62. The following relations are satisfied: HVT61=0 mm and HVT62=0 mm.

In the optical image capturing system of the first embodiment, the following relation is satisfied: HVT51/HOI=0.1031. Hereby, the aberration of surrounding view field can be corrected.

In the optical image capturing system of the first embodiment, the following relation is satisfied: HVT51/HOS=0.02634. Hereby, the aberration of surrounding view field can be corrected.

In the optical image capturing system of the first embodiment, the second lens element120, the third lens element130and the sixth lens element160have negative refractive power. An Abbe number of the second lens element is NA2. An Abbe number of the third lens element is NA3. An Abbe number of the sixth lens element is NA6. The following relation is satisfied: NA6/NA2≤1. Hereby, the chromatic aberration of the optical image capturing system can be corrected.

In the optical image capturing system of the first embodiment, TV distortion and optical distortion for image formation in the optical image capturing system are TDT and ODT, respectively. The following relations are satisfied: |TDT|=2.124% and |ODT|=5.076%.

In the optical image capturing system of the present embodiment, contrast transfer rates of modulation transfer with spatial frequencies of 55 cycles/mm of a visible light at the optical axis on the image plane, 0.3 HOI and 0.7 HOI are respectively denoted by MTFE0, MTFE3 and MTFE7. The following relations are satisfied: MTFE0 is about 0.84, MTFE3 is about 0.84 and MTFE7 is about 0.75. The contrast transfer rates of modulation transfer with spatial frequencies of 110 cycles/mm of a visible light at the optical axis on the image plane, 0.3 HOI and 0.7 HOI are respectively denoted by MTFQ0, MTFQ3 and MTFQ7. The following relations are satisfied: MTFQ0 is about 0.66, MTFQ3 is about 0.65 and MTFQ7 is about 0.51. The contrast transfer rates of modulation transfer with spatial frequencies of 220 cycles/mm (MTF values) at the optical axis on the image plane, 0.3 HOI and 0.7 HOI are respectively denoted by MTFH0, MTFH3 and MTFH7. The following relations are satisfied: MTFH0 is about 0.17, MTFH3 is about 0.07 and MTFH7 is about 0.14.

In the optical image capturing system of the present embodiment, when the infrared wavelength 850 nm is applied to focus on the image plane, contrast transfer rates of modulation transfer with a spatial frequency (55 cycles/mm) (MTF values) of the image at the optical axis on the image plane, 0.3 HOI and 0.7 HOI are respectively denoted by MTFI0, MTFI3 and MTFI7. The following relations are satisfied: MTFI0 is about 0.81, MTFI3 is about 0.8 and MTFI7 is about 0.15.

Please refer to the following Table 1 and Table 2.

The detailed data of the optical image capturing system of the first embodiment is as shown in Table 1.

Table 1 is the detailed structure data to the first embodiment inFIG. 1A, wherein the unit of the curvature radius, the thickness, the distance, and the focal length is millimeters (mm). Surfaces 0-16 illustrate the surfaces from the object side to the image plane in the optical image capturing system. Table 2 is the aspheric coefficients of the first embodiment, wherein k is the conic coefficient in the aspheric surface formula, and A1-A20 are the first to the twentieth order aspheric surface coefficient. Besides, the tables in the following embodiments are referenced to the schematic view and the aberration graphs, respectively, and definitions of parameters in the tables are equal to those in the Table 1 and the Table 2, so the repetitious details will not be given here.

The Second Embodiment (Embodiment 2)

Please refer toFIG. 2A,FIG. 2BandFIG. 2C.FIG. 2Ais a schematic view of the optical image capturing system according to the second embodiment of the present application,FIG. 2Bis longitudinal spherical aberration curves, astigmatic field curves, and an optical distortion curve of the optical image capturing system in the order from left to right according to the second embodiment of the present application, andFIG. 2Cis a characteristic diagram of modulation transfer of a visible light according to the second embodiment of the present application. As shown inFIG. 2A, in order from an object side to an image side, the optical image capturing system includes an aperture stop200, a first lens element210, a second lens element220, a third lens element230, a fourth lens element240, a fifth lens element250, a sixth lens element260, an IR-bandstop filter280, an image plane290, and an image sensing device292.

The first lens element210has positive refractive power and it is made of plastic material. The first lens element210has a convex object-side surface212and a concave image-side surface214, and both of the object-side surface212and the image-side surface214are aspheric. The object-side surface212has one inflection point and the image-side surface214has two inflection points.

The second lens element220has positive refractive power and it is made of plastic material. The second lens element220has a concave object-side surface222and a convex image-side surface224, and both of the object-side surface222and the image-side surface224are aspheric. The object-side surface222has one inflection point.

The third lens element230has negative refractive power and it is made of plastic material. The third lens element230has a convex object-side surface232and a concave image-side surface234, and both of the object-side surface232and the image-side surface234are aspheric and have one inflection point.

The fourth lens element240has positive refractive power and it is made of plastic material. The fourth lens element240has a convex object-side surface242and a concave image-side surface244, and both of the object-side surface242and the image-side surface244are aspheric and have two inflection points.

The fifth lens element250has positive refractive power and it is made of plastic material. The fifth lens element250has a concave object-side surface252and a convex image-side surface254, and both of the object-side surface252and the image-side surface254are aspheric and have one inflection point.

The sixth lens element260has negative refractive power and it is made of plastic material. The sixth lens element260has a convex object-side surface262and a concave image-side surface264. The object-side surface262and the image-side surface264both have one inflection point. Hereby, the back focal length is reduced to miniaturize the lens element effectively. In addition, the angle of incident with incoming light from an off-axis view field can be suppressed effectively and the aberration in the off-axis view field can be corrected further.

The IR-bandstop filter280is made of glass material without affecting the focal length of the optical image capturing system and it is disposed between the sixth lens element260and the image plane290.

Please refer to the following Table 3 and Table 4.

The detailed data of the optical image capturing system of the second embodiment is as shown in Table 3.

TABLE 3Data of the optical image capturing systemf = 5.667 mm; f/HEP = 1.9; HAF = 52.5 degFocalSurface #Curvature RadiusThicknessMaterialIndexAbbe #length0Object1E+181E+181Ape. stop1E+18−0.0202Lens 18.146948230.461Plastic1.54555.9620.013331.332404320.00041E+180.2075Lens 2−39.245805060.809Plastic1.54555.968.8126−4.319142240.1057Lens 315.963589440.375Plastic1.66120.36−12.33185.3744668020.5009Lens 45.6624229230.450Plastic1.54555.96371.709105.6612536510.74111Lens 5−3.4967273891.517Plastic1.54555.968.38112−2.286308120.10013Lens 62.4146289161.133Plastic1.63623.89−41.068141.8066103471.36715IR-bandstop1E+180.500BK_71.51764.13filter161E+181.11917Image plane1E+180.000Reference wavelength (d-line) = 555 nm; shield position: The clear aperture of the fourth surface is 1.65 mm. The clear aperture of the fourteenth surface is 6.500 mm.
As for the parameters of the aspheric surfaces of the second embodiment, reference is made to Table 4.

In the second embodiment, the presentation of the aspheric surface formula is similar to that in the first embodiment. Besides, the definitions of parameters in following tables are equal to those in the first embodiment, so the repetitious details will not be given here.

The following contents may be deduced from Table 3 and Table 4.

The following contents may be deduced from Table 3 and Table 4.

The Third Embodiment (Embodiment 3)

Please refer toFIG. 3A,FIG. 3B, andFIG. 3C.FIG. 3Ais a schematic view of the optical image capturing system according to the third embodiment of the present application,FIG. 3Bis longitudinal spherical aberration curves, astigmatic field curves, and an optical distortion curve of the optical image capturing system in the order from left to right according to the third embodiment of the present application, andFIG. 3Cis a characteristic diagram of modulation transfer of a visible light according to the third embodiment of the present application. As shown inFIG. 3A, in order from an object side to an image side, the optical image capturing system includes an aperture stop300, a first lens element310, a second lens element320, a third lens element330, a fourth lens element340, a fifth lens element350, a sixth lens element360, an IR-bandstop filter380, an image plane390, and an image sensing device392.

The first lens element310has positive refractive power and it is made of plastic material. The first lens element310has a convex object-side surface312and a concave image-side surface314, and both of the object-side surface312and the image-side surface314are aspheric and have one inflection point.

The second lens element320has negative refractive power and it is made of plastic material. The second lens element320has a convex object-side surface322and a concave image-side surface324, and both of the object-side surface322and the image-side surface324are aspheric. The object-side surface322has two inflection points and the image-side surface324has three inflection points.

The third lens element330has negative refractive power and it is made of plastic material. The third lens element330has a concave object-side surface332and a concave image-side surface334, and both of the object-side surface332and the image-side surface334are aspheric. The object-side surface332has three inflection points and the image-side surface334has two inflection points.

The fourth lens element340has positive refractive power and it is made of plastic material. The fourth lens element340has a convex object-side surface342and a concave image-side surface344, and both of the object-side surface342and the image-side surface344are aspheric and have one inflection point.

The fifth lens element350has positive refractive power and it is made of plastic material. The fifth lens element350has a concave object-side surface352and a convex image-side surface354, and both of the object-side surface352and the image-side surface354are aspheric and have two inflection points.

The sixth lens element360has negative refractive power and it is made of plastic material. The sixth lens element360has a convex object-side surface362and a concave image-side surface364. The object-side surface362and the image-side surface364both have three inflection points. Hereby, the back focal length is reduced to miniaturize the lens element effectively. In addition, the angle of incident with incoming light from an off-axis view field can be suppressed effectively and the aberration in the off-axis view field can be corrected further.

The IR-bandstop filter380is made of glass material without affecting the focal length of the optical image capturing system and it is disposed between the sixth lens element360and the image plane390.

Please refer to the following Table 5 and Table 6.

The detailed data of the optical image capturing system of the third embodiment is as shown in Table 5.

The presentation of the aspheric surface formula in the third embodiment is similar to that in the first embodiment. Besides, the definitions of parameters in following tables are equal to those in the first embodiment so the repetitious details will not be given here.

The following contents may be deduced from Table 5 and Table 6.

The following contents may be deduced from Table 5 and Table 6.

The Fourth Embodiment (Embodiment 4)

Please refer toFIG. 4A,FIG. 4B, andFIG. 4C.FIG. 4Ais a schematic view of the optical image capturing system according to the fourth embodiment of the present application,FIG. 4Bis longitudinal spherical aberration curves, astigmatic field curves, and an optical distortion curve of the optical image capturing system in the order from left to right according to the fourth embodiment of the present application, andFIG. 4Cis a characteristic diagram of modulation transfer of a visible light according to the fourth embodiment of the present application. As shown inFIG. 4A, in order from an object side to an image side, the optical image capturing system includes an aperture stop400, a first lens element410, a second lens element420, a third lens element430, a fourth lens element440, a fifth lens element450, a sixth lens element460, an IR-bandstop filter480, an image plane490, and an image sensing device492.

The first lens element410has positive refractive power and it is made of plastic material. The first lens element410has a convex object-side surface412and a concave image-side surface414, and both of the object-side surface412and the image-side surface414are aspheric and have one inflection point.

The second lens element420has negative refractive power and it is made of plastic material. The second lens element420has a convex object-side surface422and a concave image-side surface424, and both of the object-side surface422and the image-side surface424are aspheric and have one inflection point.

The third lens element430has negative refractive power and it is made of plastic material. The third lens element430has a concave object-side surface432and a concave image-side surface434, and both of the object-side surface432and the image-side surface434are aspheric. The object-side surface432has three inflection points and the image-side surface434has two inflection points.

The fourth lens element440has positive refractive power and it is made of plastic material. The fourth lens element440has a convex object-side surface442and a concave image-side surface444, and both of the object-side surface442and the image-side surface444are aspheric and have two inflection points.

The fifth lens element450has positive refractive power and it is made of plastic material. The fifth lens element450has a concave object-side surface452and a convex image-side surface454, and both of the object-side surface452and the image-side surface454are aspheric and have one inflection point.

The sixth lens element460has negative refractive power and it is made of plastic material. The sixth lens element460has a convex object-side surface462and a concave image-side surface464. The object-side surface462and the image-side surface464both have one inflection point. Hereby, the back focal length is reduced to miniaturize the lens element effectively. In addition, the angle of incident with incoming light from an off-axis view field can be suppressed effectively and the aberration in the off-axis view field can be corrected further.

The IR-bandstop filter480is made of glass material without affecting the focal length of the optical image capturing system and it is disposed between the sixth lens element460and the image plane490.

Please refer to the following Table 7 and Table 8.

The detailed data of the optical image capturing system of the fourth embodiment is as shown in Table 7.

The presentation of the aspheric surface formula in the fourth embodiment is similar to that in the first embodiment. Besides the definitions of parameters in following tables are equal to those in the first embodiment so the repetitious details will not be given here.

The following contents may be deduced from Table 7 and Table 8.

The following contents may be deduced from Table 7 and Table 8.

The Fifth Embodiment (Embodiment 5)

Please refer toFIG. 5A,FIG. 5B, andFIG. 5C.FIG. 5Ais a schematic view of the optical image capturing system according to the fifths embodiment of the present application,FIG. 5Bis longitudinal spherical aberration curves, astigmatic field curves, and an optical distortion curve of the optical image capturing system in the order from left to right according to the fifth embodiment of the present application, andFIG. 5Cis a characteristic diagram of modulation transfer of a visible light according to the fifth embodiment of the present application. As shown inFIG. 5A, in order from an object side to an image side, the optical image capturing system includes an aperture stop500, a first lens element510, a second lens element520, a third lens element530, a fourth lens element540, a fifth lens element550, a sixth lens element560, an IR-bandstop filter580, an image plane590, and an Image sensing device592.

The first lens element510has positive refractive power and it is made of plastic material. The first lens element510has a convex object-side surface512and a concave image-side surface514, and both of the object-side surface512and the image-side surface514are aspheric and have one inflection point.

The second lens element520has positive refractive power and it is made of plastic material. The second lens element520has a concave object-side surface522and a convex image-side surface524, and both of the object-side surface522and the image-side surface524are aspheric. The object-side surface522has two inflection points.

The third lens element530has negative refractive power and it is made of plastic material. The third lens element530has a convex object-side surface532and a concave image-side surface534, and both of the object-side surface532and the image-side surface534are aspheric. The object-side surface532has two inflection points and the image-side surface534has one inflection point.

The fourth lens element540has negative refractive power and it is made of plastic material. The fourth lens element540has a convex object-side surface542and a convex image-side surface544, and both of the object-side surface542and the image-side surface544are aspheric. The object-side surface542has three inflection points and the image-side surface544has two inflection points.

The fifth lens element550has positive refractive power and it is made of plastic material. The fifth lens element550has a concave object-side surface552and a convex image-side surface554, and both of the object-side surface552and the image-side surface554are aspheric. The image-side surface554has one inflection point.

The sixth lens element560has negative refractive power and it is made of plastic material. The sixth lens element560has a convex object-side surface562and a concave image-side surface564. The object-side surface562has two inflection points and the image-side surface564has one inflection point. Hereby, the back focal length is reduced to miniaturize the lens element effectively. In addition, the angle of incident with incoming light from an off-axis view field can be suppressed effectively and the aberration in the off-axis view field can be corrected further.

The IR-bandstop filter580is made of glass material without affecting the focal length of the optical image capturing system and it is disposed between the sixth lens element560and the image plane590.

Please refer to the following Table 9 and Table 10.

The detailed data of the optical image capturing system of the fifth embodiment is as shown in Table 9.

The presentation of the aspheric surface formula in the fifth embodiment is similar to that in the first embodiment. Besides the definitions of parameters in following tables are equal to those in the first embodiment so the repetitious details will not be given here.

The following contents may be deduced from Table 9 and Table 10.

The following contents may be deduced from Table 9 and Table 10.

The Sixth Embodiment (Embodiment 6)

Please refer toFIG. 6A,FIG. 6B, andFIG. 6C.FIG. 6Ais a schematic view of the optical image capturing system according to the sixth Embodiment of the present application,FIG. 6Bis longitudinal spherical aberration curves, astigmatic field curves, and an optical distortion curve of the optical image capturing system in the order from left to right according to the sixth Embodiment of the present application, andFIG. 6Cis a characteristic diagram of modulation transfer of a visible light according to the sixth embodiment of the present application. As shown inFIG. 6A, in order from an object side to an image side, the optical image capturing system includes an aperture stop600, a first lens element610, a second lens element620, a third lens element630, a fourth lens element640, a fifth lens element650, a sixth lens element660, an IR-bandstop filter680, an image plane690, and an image sensing device692.

The first lens element610has positive refractive power and it is made of plastic material. The first lens element610has a convex object-side surface612and a concave image-side surface614, and both of the object-side surface612and the image-side surface614are aspheric. The object-side surface612has one inflection point and the image-side surface614has two inflection points.

The second lens element620has positive refractive power and it is made of plastic material. The second lens element620has a concave object-side surface622and a convex image-side surface624, and both of the object-side surface622and the image-side surface624are aspheric. The object-side surface622has one inflection point.

The third lens element630has negative refractive power and it is made of plastic material. The third lens element630has a convex object-side surface632and a concave image-side surface634, and both of the object-side surface632and the image-side surface634are aspheric and have one inflection point.

The fourth lens element640has negative refractive power and it is made of plastic material. The fourth lens element640has a convex object-side surface642and a concave image-side surface644, and both of the object-side surface642and the image-side surface644are aspheric. The object-side surface642has three inflection points and the image-side surface644has two inflection points.

The fifth lens element650has positive refractive power and it is made of plastic material. The fifth lens element650has a concave object-side surface652and a convex image-side surface654, and both of the object-side surface652and the image-side surface654are aspheric and have one inflection point.

The sixth lens element660has negative refractive power and it is made of plastic material. The sixth lens element660has a convex object-side surface662and a concave image-side surface664. The object-side surface662and the image-side surface664both have one inflection point. Hereby, the back focal length is reduced to miniaturize the lens element effectively. In addition, the angle of incident with incoming light from an off-axis view field can be suppressed effectively and the aberration in the off-axis view field can be corrected further.

The IR-bandstop filter680is made of glass material without affecting the focal length of the optical image capturing system and it is disposed between the sixth lens element660and the image plane690.

Please refer to the following Table 11 and Table 12.

The detailed data of the optical image capturing system of the sixth Embodiment is as shown in Table 1.

In the sixth Embodiment, the presentation of the aspheric surface formula is similar to that in the first embodiment. Besides, the definitions of parameters in following tables are equal to those in the first embodiment, so the repetitious details will not be given here.

The following contents may be deduced from Table 11 and Table 12.

The following contents may be deduced from Table 11 and Table 12.

The Seventh Embodiment (Embodiment 7)

Please refer toFIG. 7AandFIG. 7B, andFIG. 7C.FIG. 7Ais a schematic view of the optical image capturing system according to the seventh Embodiment of the present application,FIG. 7Bis longitudinal spherical aberration curves, astigmatic field curves, and an optical distortion curve of the optical image capturing system in the order from left to right according to the seventh Embodiment of the present application, andFIG. 7Cis a characteristic diagram of modulation transfer of a visible light according to the seventh embodiment of the present application. As shown inFIG. 7A, in order from an object side to an image side, the optical image capturing system includes an aperture stop700, a first lens element710, a second lens element720, a third lens element730, a fourth lens element740, a fifth lens element750, a sixth lens element760, an IR-bandstop filter780, an image plane790, and an image sensing device792.

The first lens element710has positive refractive power and it is made of plastic material. The first lens element710has a convex object-side surface712and a concave image-side surface714, and both of the object-side surface712and the image-side surface714are aspheric and have one inflection point.

The second lens element720has negative refractive power and it is made of plastic material. The second lens element720has a convex object-side surface722and a concave image-side surface724, and both of the object-side surface722and the image-side surface724are aspheric. The object-side surface722two inflection points.

The third lens element730has negative refractive power and it is made of plastic material. The third lens element730has a concave object-side surface732and a convex image-side surface734, and both of the object-side surface732and the image-side surface734are aspheric and have three inflection points.

The fourth lens element740has positive refractive power and it is made of plastic material. The fourth lens element740has a convex object-side surface742and a concave image-side surface744, and both of the object-side surface742and the image-side surface744are aspheric and have one inflection point.

The fifth lens element750has positive refractive power and it is made of plastic material. The fifth lens element750has a concave object-side surface752and a convex image-side surface754, and both of the object-side surface752and the image-side surface754are aspheric. The object-side surface752has three inflection points and the image-side surface754has one inflection point.

The sixth lens element760has negative refractive power and it is made of plastic material. The sixth lens element760has a convex object-side surface762and a concave image-side surface764. The object-side surface762has three inflection points and the image-side surface764has one inflection point. Hereby, the back focal length is reduced to miniaturize the lens element effectively. In addition, the angle of incident with incoming light from an off-axis view field can be suppressed effectively and the aberration in the off-axis view field can be corrected further.

The IR-bandstop filter780is made of glass material without affecting the focal length of the optical image capturing system and it is disposed between the sixth lens element760and the image plane790.

Please refer to the following Table 13 and Table 14.

The detailed data of the optical image capturing system of the seventh Embodiment is as shown in Table 13.

TABLE 13Data of the optical image capturing systemf = 7.391 mm; f/HEP = 1.8; HAF = 47.500 degSurfaceFocal#Curvature RadiusThicknessMaterialIndexAbbe #length0Object1E+181E+181Ape. Stop1E+18−0.3702Lens 13.6682334180.909Plastic1.54555.969.251312.211380190.00041E+180.2925Lens 214.455094710.350Plastic1.66120.36−21.86967.1873046830.4757Lens 3−45.71167020.508Plastic1.54555.96−368.5318−59.372364530.1439Lens 42.625530640.480Plastic1.54555.9620.556103.20553111.20711Lens 5−4.0429500880.954Plastic1.54555.966.79112−2.0959550470.89513Lens 65.6024171140.849Plastic1.66120.36−5.746142.1369090450.71815IR-bandstop1E+180.500BK_71.51764.13filter161E+181.10017Image plane1E+180.000Reference wavelength (d-line) = 555 nm; shield position: The clear aperture of the fourth surface is 1.870 mm. The clear aperture of the fourteenth surface is 5.975 mm.
As for the parameters of the aspheric surfaces of the seventh Embodiment, reference is made to Table 14.

In the seventh Embodiment, the presentation of the aspheric surface formula is similar to that in the first embodiment. Besides, the definitions of parameters in following tables are equal to those in the first embodiment, so the repetitious details will not be given here.

The following contents may be deduced from Table 13 and Table 14.

The following contents may be deduced from Table 13 and Table 14.

The Eight Embodiment (Embodiment 8)

Please refer toFIG. 8A,FIG. 8B, andFIG. 8C.FIG. 8Ais a schematic view of the optical image capturing system according to the eighth Embodiment of the present application,FIG. 8Bis longitudinal spherical aberration curves, astigmatic field curves, and an optical distortion curve of the optical image capturing system in the order from left to right according to the eighth Embodiment of the present application, andFIG. 8Cis a characteristic diagram of modulation transfer of a visible light according to the eighth embodiment of the present application. As shown inFIG. 8A, in order from an object side to an image side, the optical image capturing system includes an aperture stop800, a first lens element810, a second lens element820, a third lens element830, a fourth lens element840, a fifth lens element850, a sixth lens element860, an IR-bandstop filter880, an image plane890, and an image sensing device892.

The first lens element810has positive refractive power and it is made of plastic material. The first lens element810has a convex object-side surface812and a concave image-side surface814, and both of the object-side surface812and the image-side surface814are aspheric and have one inflection point.

The second lens element820has positive refractive power and it is made of plastic material. The second lens element820has a convex object-side surface822and a concave image-side surface824, and both of the object-side surface822and the image-side surface824are aspheric and have two inflection points.

The third lens element830has negative refractive power and it is made of plastic material. The third lens element830has a concave object-side surface832and a concave image-side surface834, and both of the object-side surface832and the image-side surface834are aspheric. The object-side surface832has three inflection points and the image-side surface834has one inflection point.

The fourth lens element840has negative refractive power and it is made of plastic material. The fourth lens element840has a convex object-side surface842and a concave image-side surface844, and both of the object-side surface842and the image-side surface844are aspheric and have two inflection points.

The fifth lens element850has positive refractive power and it is made of plastic material. The fifth lens element850has a concave object-side surface852and a convex image-side surface854, and both of the object-side surface852and the image-side surface854are aspheric and have two inflection points.

The sixth lens element860has negative refractive power and it is made of plastic material. The sixth lens element860has a convex object-side surface862and a concave image-side surface864. The object-side surface862has two inflection points and the image-side surface864has one inflection point. Hereby, the back focal length is reduced to miniaturize the lens element effectively. In addition, the angle of incident with incoming light from an off-axis view field can be suppressed effectively and the aberration in the off-axis view field can be corrected further.

The IR-bandstop filter880is made of glass material without affecting the focal length of the optical image capturing system and it is disposed between the sixth lens element860and the image plane890.

The detailed data of the optical image capturing system of the eighth Embodiment is as shown in Table 15.

TABLE 15Data of the optical image capturing systemf = 7.584 mm; f/HEP = 1.8; HAF = 47.500 degSurfaceFocal#Curvature RadiusThicknessMaterialIndexAbbe #length0Object1E+181E+181Ape. Stop1E+18−0.0102Lens 15.664604450.702Plastic1.54555.9616.046315.310634320.00041E+180.5985Lens 27.340634320.350Plastic1.66120.36−37.73765.5739093620.4287Lens 3−65.567495970.688Plastic1.54555.96−18.257811.80637970.1009Lens 44.0351463890.823Plastic1.54555.967.61310125.93003161.45911Lens 5−3.7712820811.133Plastic1.54555.965.36812−1.8246444770.10013Lens 64.4057520491.203Plastic1.66120.36−5.640141.8067875931.31615IR-bandstop1E+180.500BK_71.51764.13filter161E+181.10017Image plane1E+180.000Reference wavelength (d-line) = 555 nm; shield position: The clear aperture of the fourth surface is 2.100 mm. The clear aperture of the fourteenth surface is 6.500 mm.
As for the parameters of the aspheric surfaces of the eighth Embodiment, reference is made to Table 16.

In the eighth Embodiment, the presentation of the aspheric surface formula is similar to that in the first embodiment. Besides, the definitions of parameters in following tables are equal to those in the first embodiment, so the repetitious details will not be given here.

The following contents may be deduced from Table 15 and Table 16.

The following contents may be deduced from Table 15 and Table 16.

The Ninth Embodiment (Embodiment 9)

Please refer toFIG. 9A,FIG. 9B, andFIG. 9C.FIG. 9Ais a schematic view of the optical image capturing system according to the ninth Embodiment of the present application.FIG. 9Bis longitudinal spherical aberration curves, astigmatic field curves, and an optical distortion curve of the optical image capturing system in the order from left to right according to the ninth Embodiment of the present application, andFIG. 9Cis a characteristic diagram of modulation transfer of a visible light according to the ninth embodiment of the present application. As shown inFIG. 9A, in order from an object side to an image side, the optical image capturing system includes an aperture stop900, a first lens element910, a second lens element920, a third lens element930, a fourth lens element940, a fifth lens element950, a sixth lens element960, an IR-bandstop filter980, an image plane990, and an image sensing device992.

The first lens element910has positive refractive power and it is made of plastic material. The first lens element910has a convex object-side surface912and a concave image-side surface914, and both of the object-side surface912and the image-side surface914are aspheric and have one inflection point.

The second lens element920has negative refractive power and it is made of plastic material. The second lens element920has a convex object-side surface922and a concave image-side surface924, and both of the object-side surface922and the image-side surface924are aspheric and have two inflection points.

The third lens element930has negative refractive power and it is made of plastic material. The third lens element930has a concave object-side surface932and a convex image-side surface934, and both of the object-side surface932and the image-side surface934are aspheric and have three inflection points.

The fourth lens element940has positive refractive power and it is made of plastic material. The fourth lens element940has a convex object-side surface942and a concave image-side surface944, and both of the object-side surface942and the image-side surface944are aspheric and have one inflection point.

The fifth lens element950has positive refractive power and it is made of plastic material. The fifth lens element950has a concave object-side surface952and a convex image-side surface954, and both of the object-side surface952and the image-side surface954are aspheric. The object-side surface952has three inflection points and the image-side surface954has one inflection point.

The sixth lens element960has negative refractive power and it is made of plastic material. The sixth lens element960has a convex object-side surface962and a concave image-side surface964. The object-side surface962has three inflection points and the image-side surface964has one inflection point. Hereby, the back focal length is reduced to miniaturize the lens element effectively. In addition, the angle of incident with incoming light from an off-axis view field can be suppressed effectively and the aberration in the off-axis view field can be corrected further.

The IR-bandstop filter980is made of glass material without affecting the focal length of the optical image capturing system and it is disposed between the sixth lens element960and the image plane990.

Please refer to the following Table 17 and Table 18.

The detailed data of the optical image capturing system of the ninth Embodiment is as shown in Table 17.

TABLE 17Data of the optical image capturing systemf = 7.399 mm; f/HEP = 1.8; HAF = 45 degSurfaceFocal#Curvature RadiusThicknessMaterialIndexAbbe #length0Object1E+181E+181Ape. stop1E+18−0.2952Lens 13.7025014930.784Plastic1.54555.969.552311.794364650.00041E+180.3325Lens 212.894208090.350Plastic1.66120.36−24.19767.0876254770.4677Lens 3−37.174126850.503Plastic1.54555.96−150.5478−68.162537620.1299Lens 42.6170502560.453Plastic1.54555.9619.641103.2498562061.18111Lens 5−4.0821685710.941Plastic1.54555.967.24812−2.173596091.11013Lens 66.9717005610.845Plastic1.66120.36−6.163142.4594994420.68215IR-bandstop1E+180.500BK_71.51764.13filter161E+181.10017Image plane1E+180.000Reference wavelength (d-line) = 555 nm; shield position: The clear aperture of the fourth surface is 1.870 mm. The clear aperture of the fourteenth surface is 5.975 mm.
As for the parameters of the aspheric surfaces of the ninth Embodiment, reference is made to Table 18.

In the ninth Embodiment, the presentation of the aspheric surface formula is similar to that in the first embodiment. Besides, the definitions of parameters in following tables are equal to those in the first embodiment, so the repetitious details will not be given here.

The following contents may be deduced from Table 17 and Table 18.

The following contents may be deduced from Table 17 and Table 18.