CN213986983U

CN213986983U - Optical imaging lens, camera module and electronic equipment

Info

Publication number: CN213986983U
Application number: CN202022997825.9U
Authority: CN
Inventors: 曾晗; 杨懿; 刘秀; 李明
Original assignee: Jiangxi Jingchao Optical Co Ltd
Current assignee: Jiangxi Jingchao Optical Co Ltd
Priority date: 2020-12-11
Filing date: 2020-12-11
Publication date: 2021-08-17
Anticipated expiration: 2030-12-11

Abstract

The utility model relates to an optical imaging technology field specifically discloses an optical imaging camera lens, module and electronic equipment make a video recording. The optical imaging lens comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens which are sequentially arranged from the object side to the image side, wherein the optical imaging lens meets the conditional expression that f3456/f is more than 1 and less than 4, f3456 is the combined focal length of the third lens, the fourth lens, the fifth lens and the sixth lens, and f is the effective focal length of the optical imaging lens. The utility model discloses an optical imaging lens has six lenses of refractive power through the setting, is favorable to rectifying optical imaging lens's aberration such as chromatic aberration, field curvature, can slow down light deflection angle, reduces the design and the equipment sensitivity of each lens, can satisfy optical imaging lens miniaturization, lightweight and the demand of the high clarity of imaging quality.

Description

Optical imaging lens, camera module and electronic equipment

Technical Field

The utility model relates to an optical imaging technology field especially relates to an optical imaging camera lens, module and electronic equipment make a video recording.

Background

With the continuous development of the mobile phone manufacturing technology, in order to meet the photographing requirements of a large number of users, the photographing pixels of the mobile phone camera are increased year by year. A mobile phone lens, which is an important component of a smart phone manufacturing technology, is also rapidly developed in synchronization, and a development trend that a single mobile phone is equipped with a plurality of camera lenses having different functions at the same time has appeared in recent years.

In addition, with the advancement of semiconductor engineering technology, the pixel size of the photosensitive element is gradually reduced, and the number of pixels in the photosensitive element with the same size is increased, which provides the possibility of achieving higher definition of the shooting effect under the condition of the same size space. Therefore, in order to adapt to the development trend that the thickness and the volume of the applications such as mobile phones, tablet computers, smart watches, security cameras, vehicle-mounted cameras and the like carrying a plurality of camera lenses are smaller and smaller, the camera lenses also face huge challenges of miniaturization, light weight and high-definition requirements on imaging quality. The current optical imaging lens is difficult to meet the requirements of miniaturization, light weight and high imaging quality.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an optical imaging lens, module and electronic equipment make a video recording, this optical imaging lens can satisfy the demand of miniaturization, lightweight and the high clear of formation of image quality.

In order to achieve the above object, an embodiment of the present invention discloses an optical imaging lens, which includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens sequentially disposed from an object side to an image side;

the first lens element with positive refractive power has a convex object-side surface at a paraxial region thereof and a convex image-side surface at a paraxial region thereof;

the second lens element with negative refractive power has a convex object-side surface at paraxial region and a concave image-side surface at paraxial region;

the third lens element with refractive power has a convex object-side surface at paraxial region;

the fourth lens element with positive refractive power has a concave object-side surface at a paraxial region thereof and a convex image-side surface at a paraxial region thereof;

the fifth lens element with positive refractive power has a convex image-side surface at a paraxial region;

the sixth lens element with negative refractive power has a concave image-side surface at a paraxial region, at least one of an object-side surface of the sixth lens element and the image-side surface of the sixth lens element is aspheric, and at least one of the object-side surface of the sixth lens element and the image-side surface of the sixth lens element is provided with at least one inflection point;

The optical imaging lens meets the conditional expression that f3456/f is more than 1 and less than 4, f3456 is the combined focal length of the third lens, the fourth lens, the fifth lens and the sixth lens, and f is the effective focal length of the optical imaging lens.

By satisfying the conditional expression that f3456/f is less than 4, the ratio relationship between the combined focal length of the third lens, the fourth lens, the fifth lens and the sixth lens and the effective focal length of the optical imaging lens can be reasonably configured, which is beneficial to correcting the chromatic aberration and the curvature of field of the optical imaging lens, slowing down the light deflection, reducing the light deflection angle, and reducing the design and assembly sensitivity of each lens, thereby reducing the molding difficulty of the optical imaging lens. When f3456/f is greater than 4, the third lens, the fourth lens, the fifth lens and the sixth lens together contribute to the over-high positive focal power of the whole optical imaging lens, which is easy to cause over-high light deflection and is not beneficial to aberration correction, and finally, the imaging quality is reduced.

That is to say, the utility model discloses an optical imaging lens has six lenses of refractive power through the setting, is favorable to rectifying optical imaging lens's aberration such as chromatic aberration, field curvature, can slow down light deflection angle, reduces the design and the equipment sensitivity of each lens, satisfies optical imaging lens miniaturization, lightweight and the demand of the high-definition of imaging quality.

As an optional implementation manner, in an embodiment of the present invention, the optical imaging lens further satisfies the conditional expression: and TTL/ImgH is more than 1.25 and less than 1.7, wherein TTL is the distance from the object side surface of the first lens element to the imaging surface of the optical imaging lens on the optical axis, and ImgH is half of the image height corresponding to the maximum field angle of the optical imaging lens. When the condition formula is satisfied, the optical imaging lens is favorable for realizing a large imaging surface, the shooting effect is improved, and meanwhile the light and thin design of the optical imaging lens can be realized. When TTL/ImgH is more than 1.7, the total length of the optical imaging lens is too large, which is not beneficial to realizing the ultrathin characteristic of the optical imaging lens.

As an optional implementation manner, in an embodiment of the present invention, the optical imaging lens further satisfies the conditional expression: 0.5 < f12/f3456 < 3, f12 is the combined focal length of the first lens and the second lens. When the condition formula is met, the ratio of the combined focal length of the first lens and the second lens to the combined focal length of the third lens, the fourth lens, the fifth lens and the sixth lens can be reasonably configured, the design and assembly sensitivity of each lens can be guaranteed to be in a balanced state, and the total length of the optical imaging lens can be reduced. When f12/f3456 > 3, the positive power assigned to the combined lens of the first lens and the second lens is too large to correct the aberration of the optical imaging lens.

As an optional implementation manner, in an embodiment of the present invention, the optical imaging lens further satisfies the conditional expression: 1.2 < f12/f < 3.5, f12 being the combined focal length of the first and second lenses. When the condition formula is met, the ratio of the combined focal length of the first lens and the second lens to the effective focal length of the optical imaging lens can be reasonably configured, the field curvature and distortion of the optical imaging lens are favorably improved, the forming and processing difficulty of the lenses is reduced, and the total length of the optical imaging lens is favorably shortened. When f12/f < 1.2, the positive power provided to the combined lens of the first lens and the second lens is insufficient, which is disadvantageous for aberration correction of the optical imaging lens.

As an optional implementation manner, in an embodiment of the present invention, the optical imaging lens further satisfies the conditional expression: Fno/ImgH < 0.45mm^-1Fno is the f-number of the optical imaging lens, and ImgH is half of the image height corresponding to the maximum field angle of the optical imaging lens. The ratio of the aperture value to the image height of the optical imaging lens is controlled to be less than 0.45mm^-1The optical imaging lens has a large image surface and a large aperture.

As an optional implementation manner, in an embodiment of the present invention, the optical imaging lens further satisfies the conditional expression: and the TTL is more than 3.5 and less than 5.5, the TTL is the distance between the object side surface of the first lens and the imaging surface of the optical imaging lens on the optical axis, and the Σ AT is the sum of the intervals on the optical axis between two adjacent lenses of the first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens. When the conditions are met, the ratio of the total length of the optical imaging lens to the sum of the intervals between the adjacent lenses on the optical axis can be reasonably configured, so that the distance between the adjacent lenses on the optical axis can be favorably reduced in a processing range, the total length of the optical imaging lens is further reduced, and the ultrathin characteristic of the optical imaging lens is realized. When TTL/SIGMA AT is less than 3.5, the distance between two adjacent lenses on the optical axis is too large, so that the total length of the optical imaging lens is increased, and the optical imaging lens is not light and thin; when TTL/Σ AT > 5.5, the distance between two adjacent lenses on the optical axis is too small, which is not favorable for assembling the lenses and increases the processing difficulty.

As an optional implementation manner, in an embodiment of the present invention, the optical imaging lens further satisfies the conditional expression: 0 < (R51+ R52)/(R51-R52) < 3, R51 is a radius of curvature of an object-side surface of the fifth lens at an optical axis, and R52 is a radius of curvature of an image-side surface of the fifth lens at the optical axis. When the conditional expressions are met, the shape of the fifth lens can be reasonably configured, so that the fifth lens cannot be excessively bent, the actual processing and forming of the fifth lens are facilitated, and the design and assembly sensitivity of the fifth lens is reduced.

As an optional implementation manner, in an embodiment of the present invention, the optical imaging lens further satisfies the conditional expression: 2 < R61/CT6 < 6, R61 is a radius of curvature of an image-side surface of the sixth lens element at an optical axis, and CT6 is a thickness of the sixth lens element at the optical axis. The utility model discloses a sixth lens element provides positive refractive power, and through satisfying above-mentioned conditional expression, shape and thickness that can the rational balance sixth lens element can effectively avoid the sixth lens element excessively to bend, is favorable to realizing the machine-shaping of sixth lens element and optical imaging lens's equipment, also can effectively avoid the sixth lens element too thick, is favorable to realizing the frivolous design of sixth lens element and optical imaging lens.

As an optional implementation manner, in the embodiment of the present invention, the optical imaging lens further satisfies the conditional expression that ImgH > 4.5mm, and ImgH is half of the image height corresponding to the maximum field angle of the optical imaging lens. The ImgH is the maximum imaging circle radius of the optical imaging lens and determines the size of the electronic photosensitive chip, and the larger the ImgH is, the larger the size of the supportable maximum electronic photosensitive chip is, so that large-image-plane and high-pixel shooting can be realized. If ImgH is less than 4.5mm, the pixel lifting of the optical imaging lens becomes difficult.

In a second aspect, the embodiment of the present invention further discloses a camera module, which includes a photosensitive element and the above-mentioned optical imaging lens, wherein the photosensitive element is disposed on the image side of the optical imaging lens.

In a third aspect, the embodiment of the present invention further discloses an electronic device, which includes the above-mentioned camera module.

Compared with the prior art, the utility model discloses an optical imaging lens, module and electronic equipment of making a video recording have following beneficial effect at least:

the utility model discloses a make optical imaging camera lens satisfy conditional expression 1 < f3456/f < 4, can rationally dispose the ratio relation of the combination focus of third lens, fourth lens, fifth lens and sixth lens and optical imaging camera lens's effective focal length, be favorable to proofreading and correct optical imaging camera lens's colour difference and field curvature to can slow down light deflection angle, reduce the design and the equipment sensitivity of each lens, reduce the optical imaging camera lens shaping degree of difficulty. When f3456/f is greater than 4, the third lens, the fourth lens, the fifth lens and the sixth lens together contribute to the over-high positive focal power of the whole optical imaging lens, which is easy to cause over-high light deflection and is not beneficial to aberration correction, and finally, the imaging quality is reduced. The utility model discloses an optical imaging camera lens has six lenses of refracting power through the setting, is favorable to rectifying optical imaging camera lens's aberration such as chromatic aberration, field curvature, can slow down light deflection, reduces light deflection angle, reduces the design and the equipment sensitivity of each lens, satisfies optical imaging camera lens miniaturization, lightweight and the demand of the high-definition of imaging quality.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an optical imaging lens according to an embodiment of the present invention;

fig. 2 is a longitudinal spherical aberration curve, an astigmatism curve and a distortion curve of an optical imaging lens according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of an optical imaging lens disclosed in the second embodiment of the present invention;

fig. 4 is a longitudinal spherical aberration curve, an astigmatism curve and a distortion curve of the optical imaging lens disclosed in the second embodiment of the present invention;

fig. 5 is a schematic structural diagram of an optical imaging lens disclosed in the third embodiment of the present invention;

fig. 6 is a longitudinal spherical aberration curve, an astigmatism curve and a distortion curve of the optical imaging lens according to the third embodiment of the present invention;

fig. 7 is a schematic structural diagram of an optical imaging lens disclosed in the fourth embodiment of the present invention;

Fig. 8 is a longitudinal spherical aberration curve, an astigmatism curve and a distortion curve of the optical imaging lens according to the fourth embodiment of the present invention;

fig. 9 is a schematic structural diagram of an optical imaging lens disclosed in the fifth embodiment of the present invention;

fig. 10 is a longitudinal spherical aberration curve, an astigmatism curve and a distortion curve of an optical imaging lens according to the fifth disclosure;

fig. 11 is a schematic perspective view of a camera module according to an embodiment of the present invention;

fig. 12 is a front view of an electronic device disclosed in an embodiment of the present invention.

Icon: 100. an optical imaging lens; 10. a first lens; 11. the object side (of the first lens); 12. image side surface (of the first lens); 20. a second lens; 21. the object side (of the second lens); 22. image side surface (of the second lens); 30. a third lens; 31. the object side (of the third lens); 32. image side surface (of the third lens); 40. a fourth lens; 41. the object side (of the fourth lens); 42. image side surface (of the fourth lens); 50. a fifth lens; 51. the object side (of the fifth lens); 52. the image side surface (of the fifth lens); 60. a sixth lens; 61. the object side (of the sixth lens); 62. the image-side surface (of the sixth lens); 70. an infrared filter; 71. object side (of infrared filter); 72. image side (of infrared filter); 80. a diaphragm; 90. an imaging plane; 200. a camera module; 201. a housing; 300. an electronic device; 301. a housing.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the present invention, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are used primarily to better describe the invention and its embodiments, and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in the present invention can be understood by those of ordinary skill in the art as appropriate.

Furthermore, the terms "mounted," "disposed," "provided," "connected," and "connected" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Furthermore, the terms "first," "second," and the like, are used primarily to distinguish one device, element, or component from another (the particular nature and configuration of which may be the same or different, and not intended to indicate or imply the relative importance or importance of the indicated device, element, or component.

The utility model discloses an optical imaging lens includes first lens, second lens, third lens, fourth lens, fifth lens and the sixth lens that sets gradually along thing side to picture side.

The first lens element with positive refractive power has a convex object-side surface at paraxial region and a convex image-side surface at paraxial region; the second lens element with negative refractive power has a convex object-side surface at paraxial region and a concave image-side surface at paraxial region; the third lens element with refractive power has a convex object-side surface at paraxial region; the fourth lens element with positive refractive power has a concave object-side surface at a paraxial region thereof and a convex image-side surface at a paraxial region thereof; the fifth lens element with positive refractive power has a convex image-side surface at paraxial region; the sixth lens element with negative refractive power has a concave image-side surface at paraxial region, at least one of the object-side surface of the sixth lens element and the image-side surface of the sixth lens element is aspheric, and at least one inflection point is disposed on at least one of the object-side surface of the sixth lens element and the image-side surface of the sixth lens element. In addition, the optical imaging lens of the utility model satisfies the conditional expression that 1 < f3456/f < 4, the ratio of f3456/f can be 1.007, 1.434, 2.200, 2.978, 3.069, etc., f3456 is the combined focal length of the third lens, the fourth lens, the fifth lens and the sixth lens, and f is the effective focal length of the optical imaging lens.

By enabling the optical imaging lens to satisfy the conditional expression that f3456/f is less than 4, the ratio relationship between the combined focal length of the third lens, the fourth lens, the fifth lens and the sixth lens and the effective focal length of the optical imaging lens can be reasonably configured, which is beneficial to correcting the chromatic aberration and the curvature of field of the optical imaging lens, slowing down the light deflection, reducing the light deflection angle, and reducing the design and assembly sensitivity of each lens, thereby reducing the molding difficulty of the optical imaging lens. When f3456/f is greater than 4, the third lens, the fourth lens, the fifth lens and the sixth lens together contribute to the over-high positive focal power of the whole optical imaging lens, which is easy to cause over-high light deflection and is not beneficial to aberration correction, and finally, the imaging quality is reduced.

That is to say, the utility model discloses an optical imaging camera lens has six lenses of refractive power through the setting, is favorable to rectifying optical imaging camera lens's aberration such as chromatic aberration, field curvature, can slow down light deflection, reduces light deflection angle, reduces the design and the equipment sensitivity of each lens to can satisfy optical imaging camera lens miniaturization, lightweight and the high demand of clearing up of imaging quality.

The utility model provides an optical imaging camera lens still includes the diaphragm, and this diaphragm can arrange in optical imaging camera lens's first lens's object side, the image side of sixth lens or between two adjacent lenses in first lens to the sixth lens, is convenient for adjust and restrict light beam or visual field (formation of image scope) size.

Further, the utility model provides an infrared filter has been put between the image side face of sixth lens element and the imaging surface of optical imaging camera lens, is convenient for carry out filtering process to infrared light for the light of penetrating into the imaging surface is visible light. The utility model discloses a in other embodiments, can also set up infrared filter coating in the image side or the object side of any lens in first lens to the sixth lens, be convenient for carry out filtering process to infrared light for the light of penetrating into the imaging surface is the visible light.

Further, the utility model discloses an optical imaging camera lens still satisfies the conditional expression: 1.25 < TTL/ImgH < 1.7, and the ratio of TTL/ImgH can be, for example, 1.296, 1.328, 1.577, 1.620, 1.663, etc. Wherein, TTL is a distance on an optical axis from an object-side surface of the first lens element to an image plane of the optical imaging lens, and ImgH is half of an image height corresponding to a maximum field angle of the optical imaging lens. When the condition formula is satisfied, the optical imaging lens is favorable for realizing a large imaging surface, the shooting effect is improved, and meanwhile the light and thin design of the optical imaging lens can be realized. When TTL/ImgH is more than 1.7, the total length of the optical imaging lens is too large, which is not beneficial to realizing the ultrathin characteristic of the optical imaging lens.

Further, the utility model discloses an optical imaging camera lens still satisfies the conditional expression: 0.5 < f12/f3456 < 3, the ratio f12/f3456 may be, for example, 0.510, 0.521, 0.786, 0.886 or 2.483, etc. Where f12 is a combined focal length of the first lens and the second lens, and f3456 is a combined focal length of the third lens, the fourth lens, the fifth lens, and the sixth lens. When the optical imaging lens meets the conditional expressions, the ratio of the combined focal length of the first lens and the second lens to the combined focal length of the third lens, the fourth lens, the fifth lens and the sixth lens can be reasonably configured, so that the design and assembly sensitivity of each lens are in a balanced state, and the total length of the optical imaging lens can be reduced. When f12/f3456 > 3, the positive power assigned to the combined lens of the first lens and the second lens is too large to correct the aberration of the optical imaging lens.

Further, the utility model discloses an optical imaging camera lens still satisfies the conditional expression: 1.2 < f12/f < 3.5, the ratio of f12/f can be, for example, 1.270, 1.518, 1.597, 1.728, 3.277, etc. Where f12 is the combined focal length of the first lens and the second lens, and f is the effective focal length of the optical imaging lens. When the optical imaging lens meets the condition formula, the ratio of the combined focal length of the first lens and the second lens to the effective focal length of the optical imaging lens can be reasonably configured, so that the field curvature and the distortion of the optical imaging lens are favorably improved, the forming and processing difficulty of the lenses is reduced, and the total length of the optical imaging lens is favorably shortened. When f12/f < 1.2, the positive power provided to the combined lens of the first lens and the second lens is insufficient, which is disadvantageous for aberration correction.

Further, the utility model discloses an optical imaging camera lens still satisfies the conditional expression: Fno/ImgH < 0.45mm^-1The Fno/ImgH ratio may be, for example, 0.389mm^-1、0.402mm^-1And the like. Wherein, Fno is the f-number of the optical imaging lens, and ImgH is half of the image height corresponding to the maximum field angle of the optical imaging lens. The ratio of the aperture value to the image height of the optical imaging lens is controlled to be less than 0.45mm^-1The optical imaging lens has a large image surface and a large aperture.

Further, the utility model discloses an optical imaging camera lens still satisfies the conditional expression: 3.5 < TTL/SIGMA AT < 5.5, the ratio of TTL/SIGMA AT can be, for example, 3.568, 4.054, 4.294, 4.298, and 5.175, etc. Wherein, TTL is a distance on an optical axis from an object-side surface of the first lens element to an image plane of the optical imaging lens, and Σ AT is a sum of distances on the optical axis between two adjacent lens elements of the first lens element, the second lens element, the third lens element, the fourth lens element, the fifth lens element, and the sixth lens element. When the conditions are met, the ratio of the total length of the optical imaging lens to the sum of the intervals between the adjacent lenses on the optical axis can be reasonably configured, so that the distance between the adjacent lenses on the optical axis can be favorably reduced in a processing range, the total length of the optical imaging lens is further reduced, and the ultrathin characteristic of the optical imaging lens is realized. When TTL/Σ AT is less than 3.5, the distance between two adjacent lenses on the optical axis is too large, and when TTL/Σ AT is greater than 5.5, the distance between two adjacent lenses on the optical axis is too small, which is not favorable for assembling the lenses and increases the processing difficulty.

Further, the utility model discloses an optical imaging camera lens still satisfies the conditional expression: the ratio of 0 < (R51+ R52)/(R51-R52) < 3, (R51+ R52)/(R51-R52) may be, for example, 0.548, 1.002, 1.018, 1.134, 2.924 or the like. Wherein R51 is a radius of curvature of an object-side surface of the fifth lens element at the optical axis, and R52 is a radius of curvature of an image-side surface of the fifth lens element at the optical axis. When the optical imaging lens meets the conditional expression, the shape of the fifth lens can be reasonably configured, so that the fifth lens cannot be excessively bent, the actual processing and forming of the fifth lens are facilitated, and the design and assembly sensitivity of the fifth lens is reduced.

Further, the utility model discloses an optical imaging camera lens still satisfies the conditional expression: 2 < R61/CT6 < 6, and the ratio of R61/CT6 may be, for example, 2.334, 3.241, 3.117, 4.183, 5.080, etc. Wherein R61 is a curvature radius of an image-side surface of the sixth lens element on an optical axis, and CT6 is a thickness of the sixth lens element on the optical axis. The utility model discloses a sixth lens element provides positive refractive power, and through satisfying above-mentioned conditional expression, shape and thickness that can the rational balance sixth lens element can effectively avoid the sixth lens element excessively to bend, is favorable to realizing the machine-shaping of sixth lens element and optical imaging lens's equipment, also can effectively avoid the sixth lens element too thick, is favorable to realizing the frivolous design of sixth lens element and optical imaging lens.

Furthermore, the optical imaging lens of the present invention further satisfies the conditional expression that ImgH > 4.5mm, and the ImgH may be 4.630mm, for example, where ImgH is half of the image height corresponding to the maximum field angle of the optical imaging lens. The ImgH is the maximum imaging circle radius of the optical imaging lens and determines the size of the electronic photosensitive chip, and the larger the ImgH is, the larger the size of the supportable maximum electronic photosensitive chip is, so that the optical imaging lens can realize large-image-surface and high-pixel shooting. If ImgH is less than 4.5mm, the pixel lifting of the optical imaging lens becomes difficult.

To sum up, the utility model discloses an optical imaging camera lens is favorable to rectifying aberrations such as chromatic aberration, field curvature of optical imaging camera lens through configuration first lens, second lens, third lens, fourth lens, fifth lens and the sixth lens that have focal power, can slow down light deflection angle, reduces the design and the equipment sensitivity of each lens, and satisfies the demand that optical imaging camera lens is miniaturized, lightweight and the high definition of imaging quality.

The following detailed description is made with reference to the accompanying drawings.

Example one

Referring to fig. 1 and fig. 2, according to a first embodiment of the present invention, an optical imaging lens is provided, which includes a first lens element 10, a second lens element 20, a third lens element 30, a fourth lens element 40, a fifth lens element 50, and a sixth lens element 60, which are disposed in order from an object side to an image side.

The first lens element 10 with positive refractive power has a convex object-side surface 11 at a paraxial region of the first lens element 10, and a convex image-side surface 12 at a paraxial region of the first lens element 10;

the second lens element 20 with negative refractive power has a convex object-side surface 21 at a paraxial region and a concave image-side surface 22 at a paraxial region of the second lens element 20;

the third lens element 30 with negative refractive power has a convex object-side surface 31 at a paraxial region and a concave image-side surface 32 at a paraxial region of the third lens element 30;

the fourth lens element 40 with positive refractive power has a concave object-side surface 41 at a paraxial region of the fourth lens element 40 and a convex image-side surface 42 at a paraxial region of the fourth lens element 40;

the fifth lens element 50 with positive refractive power has a concave object-side surface 51 at a paraxial region of the fifth lens element 50 and a convex image-side surface 52 at a paraxial region of the fifth lens element 50;

the sixth lens element 60 with negative refractive power has a concave object-side surface 61 at a paraxial region of the sixth lens element 60 and a concave image-side surface 62 at the paraxial region of the sixth lens element 60.

In addition, the optical imaging lens further includes a diaphragm 80, an infrared filter 70 and an imaging surface 90, wherein the diaphragm 80 may be disposed on an object side surface of the first lens 10 for controlling the amount of light entering. The diaphragm 80 may also be disposed at any position between the image-side surface 62 of the sixth lens element 60 and the first lens element 10 to the sixth lens element 60, and the infrared filter 70 is disposed between the image-side surface 62 of the sixth lens element 60 and the imaging surface 90, so as to facilitate the filtering of infrared light, so that the light incident on the imaging surface 90 is visible light with a wavelength of 380nm to 780 nm. The imaging plane 90 is located on a side of the infrared filter 70 away from the sixth lens 60, and the effective pixel area of the electronic photosensitive element is located on the imaging plane 90.

The first lens element 10, the second lens element 20, the third lens element 30, the fourth lens element 40, the fifth lens element 50, and the sixth lens element 60 are all made of Plastic (Plastic), the infrared filter 70 is made of Glass (Glass), the materials of the respective lens elements of the optical imaging lens are not limited to Plastic, but may be Glass, for example, the first lens element 10 is made of Glass, the second lens element 20, the third lens element 30, the fourth lens element 40, the fifth lens element 50, and the sixth lens element 60 are made of Plastic, or other Glass-Plastic mixed forms, and the like.

The optical imaging lens in the embodiment satisfies the following conditional expression:

1.25＜TTL/ImgH＝1.663＜1.7；

0.5＜f12/f3456＝0.510＜3；

1.2＜f12/f＝1.518＜3.5；

Fno/ImgH＝0.402mm^-1＜0.45mm^-1；

1＜f3456/f＝2.978＜4；

3.5＜TTL/∑AT＝5.175＜5.5；

0＜(R51+R52)/(R51-R52)＝1.018＜3；

2＜R61/CT6＝3.241＜6；

ImgH＝4.63mm＞4.5mm；

the above parameters are defined above and are not described herein again.

Table 1 is a table of characteristics of the optical imaging lens of the present embodiment, in which each data is obtained using visible light having a reference wavelength of 587.6nm, and units of the Y radius, the thickness, and the focal length are all millimeters (mm).

Table 1:

wherein f is an effective focal length of the optical imaging lens, FNO is an f-number of the optical imaging lens, HFOV is a half of a maximum field angle of the optical imaging lens, and TTL is a distance on an optical axis from the object-side surface 11 of the first lens element 10 to the imaging surface 90 of the optical imaging lens.

In the present embodiment, any one of the object-side surface 11 and the image-side surface 12 of the first lens element 10, the object-side surface 21 and the image-side surface 22 of the second lens element 20, the object-side surface 31 and the image-side surface 32 of the third lens element 30, the object-side surface 41 and the image-side surface 42 of the fourth lens element 40, the object-side surface 51 and the image-side surface 52 of the fifth lens element 50, and the object-side surface 61 and the image-side surface 62 of the sixth lens element 60 is an aspheric surface, and the surface type x of each aspheric surface can be defined by, but is not limited to, the following aspheric surface formula:

wherein x is the rise of the distance from the aspheric surface vertex to the aspheric surface vertex when the aspheric surface is at the position with the height of h along the optical axis direction; c is the paraxial curvature of the aspheric surface, c being 1/R (i.e., paraxial curvature c is the inverse of radius R of Y in table 1); k is a conic coefficient; ai is the correction coefficient of the i-th order of the aspherical surface.

Table 2 shows the high-order coefficient a4, a6, A8, a10, a12, a14, a15, a17, a18 and a20 of the object-side surface 11 and the image-side surface 12 of the first lens 10, the object-side surface 21 and the image-side surface 22 of the second lens 20, the object-side surface 31 and the image-side surface 32 of the third lens 30, the object-side surface 41 and the image-side surface 42 of the fourth lens 40, the object-side surface 51 and the image-side surface 52 of the fifth lens 50, and the object-side surface 61 and the image-side surface 62 of the sixth lens 60, which can be used in the present embodiment.

Table 2:

fig. 2 shows a longitudinal spherical aberration curve, an astigmatism curve, and a distortion curve of the optical imaging lens in the present embodiment. The longitudinal spherical aberration curve represents the deviation of the convergence focus of light rays with the wavelengths of 643.8469nm, 546.0740nm and 479.9914nm after passing through each lens of the optical imaging lens; the astigmatism curves represent meridional imaging plane curvature T and sagittal imaging plane curvature S; the distortion curve represents the corresponding distortion magnitude value of the optical imaging lens under each field angle. As can be seen from fig. 2, the optical imaging lens according to the first embodiment can achieve good imaging quality.

Example two

Referring to fig. 3 and 4, according to a second embodiment of the present invention, an optical imaging lens is provided, which has the same structure as that of the first embodiment, except that the optical imaging lens in the first embodiment satisfies the following conditional expressions:

1.25＜TTL/ImgH＝1.577＜1.7；

0.5＜f12/f3456＝0.521＜3；

1.2＜f12/f＝1.597＜3.5；

Fno/ImgH＝0.402mm^-1＜0.45mm^-1；

1＜f3456/f＝3.069＜4；

3.5＜TTL/∑AT＝4.294＜5.5；

0＜(R51+R52)/(R51-R52)＝1.134＜3；

2＜R61/CT6＝5.080＜6；

ImgH＝4.63mm＞4.5mm；

the above parameters are defined above and are not described herein again.

Table 3 is a table of characteristics of the optical imaging lens of the present embodiment, in which each data is obtained using visible light having a reference wavelength of 587.6nm, and units of the Y radius, the thickness, and the focal length are all millimeters (mm).

Table 3:

wherein, the meaning of each parameter in table 3 is the same as that of the first embodiment.

Table 4 shows the high-order term coefficients that can be used for each aspherical mirror surface in example two, wherein each aspherical mirror surface type can be defined by the formula given in example one.

Table 4:

fig. 4 shows a longitudinal spherical aberration curve, an astigmatism curve, and a distortion curve of the optical imaging lens in the present embodiment. The longitudinal spherical aberration curve represents the deviation of the convergence focus of light rays with the wavelengths of 643.8469nm, 546.0740nm and 479.9914nm after passing through each lens of the optical imaging lens; the astigmatism curves represent meridional imaging plane curvature T and sagittal imaging plane curvature S; the distortion curve represents the corresponding distortion magnitude value of the optical imaging lens under each field angle. As can be seen from fig. 4, the optical imaging lens according to the second embodiment can achieve good imaging quality.

EXAMPLE III

Referring to fig. 5 and 6, according to a third embodiment of the present invention, an optical imaging lens is provided, which has a structure similar to that of the first embodiment, except that an object-side surface 51 and an image-side surface 52 of a fifth lens element 50 in the present embodiment are both convex surfaces at a paraxial region, an object-side surface 61 of a sixth lens element 60 is convex at the paraxial region, and an image-side surface 62 of the sixth lens element 60 is concave at the paraxial region, and the optical imaging lens in the present embodiment satisfies the following conditional expressions:

1.25＜TTL/ImgH＝1.328＜1.7；

0.5＜f12/f3456＝0.786＜3；

1.2＜f12/f＝1.728＜3.5；

Fno/ImgH＝0.402mm^-1＜0.45mm^-1；

1＜f3456/f＝2.200＜4；

3.5＜TTL/∑AT＝3.568＜5.5；

0＜(R51+R52)/(R51-R52)＝0.548＜3；

2＜R61/CT6＝3.117＜6；

ImgH＝4.63mm＞4.5mm；

The above parameters are defined above and are not described herein again.

Table 5 is a table of characteristics of the optical imaging lens of the present embodiment, in which each data is obtained using visible light having a reference wavelength of 587.6nm, and units of the Y radius, the thickness, and the focal length are all millimeters (mm).

Table 5:

wherein, the meaning of each parameter in table 5 is the same as that of the first embodiment.

Table 6 shows the coefficients of high-order terms that can be used for each aspherical mirror in example three, wherein each aspherical mirror type can be defined by the formula given in example one.

Table 6:

fig. 6 shows a longitudinal spherical aberration curve, an astigmatism curve, and a distortion curve of the optical imaging lens in the present embodiment. The longitudinal spherical aberration curve represents the deviation of the convergence focus of light rays with the wavelengths of 643.8469nm, 546.0740nm and 479.9914nm after passing through each lens of the optical imaging lens; the astigmatism curves represent meridional imaging plane curvature T and sagittal imaging plane curvature S; the distortion curve represents the corresponding distortion magnitude value of the optical imaging lens under each field angle. As can be seen from fig. 6, the optical imaging lens according to the third embodiment can achieve good imaging quality.

Example four

Referring to fig. 7 and 8, according to a fourth embodiment of the present invention, an optical imaging lens is provided, which has the same structure as the first embodiment, except that the third lens element 30 in the present embodiment has positive refractive power, the object-side surface 61 of the sixth lens element 60 is convex at the paraxial region, and the image-side surface 62 of the sixth lens element 60 is concave at the paraxial region, and the optical imaging lens in the present embodiment satisfies the following conditional expressions:

1.25＜TTL/ImgH＝1.296＜1.7；

0.5＜f12/f3456＝2.483＜3；

1.2＜f12/f＝3.277＜3.5；

Fno/ImgH＝0.389mm^-1＜0.45mm^-1；

1＜f3456/f＝1.007＜4；

3.5＜TTL/∑AT＝4.054＜5.5；

0＜(R51+R52)/(R51-R52)＝1.002＜3；

2＜R61/CT6＝4.183＜6；

ImgH＝4.63mm＞4.5mm；

The above parameters are defined above and are not described herein again.

Table 7 is a table of characteristics of the optical imaging lens of the present embodiment, in which each data is obtained using visible light having a reference wavelength of 587.6nm, and units of the Y radius, the thickness, and the focal length are all millimeters (mm).

Table 7:

wherein, the meaning of each parameter in Table 7 is the same as that of the first embodiment.

Table 8 shows the high-order term coefficients that can be used for each aspherical mirror surface in example four, wherein each aspherical mirror surface type can be defined by the formula given in example one.

Table 8:

fig. 8 shows a longitudinal spherical aberration curve, an astigmatism curve, and a distortion curve of the optical imaging lens in the present embodiment. The longitudinal spherical aberration curve represents the deviation of the convergence focus of light rays with the wavelengths of 643.8469nm, 546.0740nm and 479.9914nm after passing through each lens of the optical imaging lens; the astigmatism curves represent meridional imaging plane curvature T and sagittal imaging plane curvature S; the distortion curve represents the corresponding distortion magnitude value of the optical imaging lens under each field angle. As can be seen from fig. 8, the optical imaging lens according to the fourth embodiment can achieve good imaging quality.

EXAMPLE five

Referring to fig. 7 and 8, according to a fifth embodiment of the present invention, an optical imaging lens is provided, which has a structure similar to that of the first embodiment, except that the third lens element 30 in the present embodiment has positive refractive power, an object-side surface 61 of the sixth lens element 60 is convex at a paraxial region, and an image-side surface 62 of the sixth lens element 60 is concave at the paraxial region, and the optical imaging lens in the present embodiment satisfies the following conditional expressions:

1.25＜TTL/ImgH＝1.620＜1.7；

0.5＜f12/f3456＝0.886＜3；

1.2＜f12/f＝1.270＜3.5；

Fno/ImgH＝0.402mm^-1＜0.45mm^-1；

1＜f3456/f＝1.434＜4；

3.5＜TTL/∑AT＝4.298＜5.5；

0＜(R51+R52)/(R51-R52)＝2.924＜3；

2＜R61/CT6＝2.334＜6；

ImgH＝4.63mm＞4.5mm；

The above parameters are defined above and are not described herein again.

Table 9 is a table of characteristics of the optical imaging lens of the present embodiment, in which each data is obtained using visible light having a reference wavelength of 587.6nm, and units of the Y radius, the thickness, and the focal length are all millimeters (mm).

Table 9:

wherein, the meaning of each parameter in table 9 is the same as that of the first embodiment.

Table 10 shows the high-order term coefficients that can be used for each of the aspherical mirror surfaces in example five, wherein each of the aspherical mirror surface types can be defined by the formulas given in example one.

Table 10:

fig. 10 shows a longitudinal spherical aberration curve, an astigmatism curve, and a distortion curve of the optical imaging lens in the present embodiment. The longitudinal spherical aberration curve represents the deviation of the convergence focus of light rays with the wavelengths of 643.8469nm, 546.0740nm and 479.9914nm after passing through each lens of the optical imaging lens; the astigmatism curves represent meridional imaging plane curvature T and sagittal imaging plane curvature S; the distortion curve represents the corresponding distortion magnitude value of the optical imaging lens under each field angle. As can be seen from fig. 10, the optical imaging lens according to the fifth embodiment can achieve good imaging quality.

According to another aspect of the present invention, referring to fig. 11, the present invention further provides a camera module 200, wherein the camera module 200 includes a housing 201, a photosensitive element (not shown in the figure) and an optical imaging lens 100, wherein the optical imaging lens 100 and the photosensitive element are both disposed on the housing 201, the photosensitive element is disposed on the image side of the optical imaging lens 100, and the optical imaging lens 100 is the optical imaging lens described above. It can be understood that the camera module in this embodiment has the optical imaging lens described above, and therefore the camera module in this embodiment has all the beneficial effects of the optical imaging lens described above, and since the beneficial effects of the optical imaging lens have been fully described above, details are not described here.

According to the third aspect of the present invention, see fig. 12, the utility model provides an electronic equipment 300, this electronic equipment 300 can be for example cell-phone, panel computer, phone wrist-watch, security protection camera, on-vehicle camera etc. and this electronic equipment includes camera module 200 and casing 301, and this camera module 200 locates casing 301. It can be understood that the electronic device 300 in this embodiment has the camera module 200 and the optical imaging lens described above, and therefore the camera module in this embodiment has all the beneficial effects of the camera module 200 and the optical imaging lens described above, and since the beneficial effects of the optical imaging lens have been fully described above, the description thereof is omitted here.

The optical imaging lens, the camera module and the electronic device disclosed in the embodiments of the present invention are introduced in detail, and the specific examples are applied to explain the principle and the implementation of the present invention, and the description of the above embodiments is only used to help understand the optical imaging lens, the camera module and the electronic device and the core idea thereof; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the specific implementation and application scope, and in summary, the content of the present specification should not be understood as the limitation of the present invention.

Claims

1. An optical imaging lens is characterized by comprising a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens which are arranged in sequence from an object side to an image side;

2. The optical imaging lens of claim 1, wherein the optical imaging lens further satisfies the conditional expression: and TTL/ImgH is more than 1.25 and less than 1.7, wherein TTL is the distance from the object side surface of the first lens element to the imaging surface of the optical imaging lens on the optical axis, and ImgH is half of the image height corresponding to the maximum field angle of the optical imaging lens.

3. The optical imaging lens of claim 1, wherein the optical imaging lens further satisfies the conditional expression: 0.5 < f12/f3456 < 3, f12 is the combined focal length of the first lens and the second lens.

4. The optical imaging lens of claim 1, wherein the optical imaging lens further satisfies the conditional expression: 1.2 < f12/f < 3.5, f12 being the combined focal length of the first and second lenses.

5. The optical imaging lens of claim 1, wherein the optical imaging lens further satisfies the conditional expression: Fno/ImgH < 0.45mm ^-1Fno is the f-number of the optical imaging lens, and ImgH is half of the image height corresponding to the maximum field angle of the optical imaging lens.

6. The optical imaging lens of claim 1, wherein the optical imaging lens further satisfies the conditional expression: and the TTL is more than 3.5 and less than 5.5, the TTL is the distance between the object side surface of the first lens and the imaging surface of the optical imaging lens on the optical axis, and the Σ AT is the sum of the intervals on the optical axis between two adjacent lenses of the first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens.

7. The optical imaging lens of claim 1, wherein the optical imaging lens further satisfies the conditional expression: 0 < (R51+ R52)/(R51-R52) < 3, R51 is a radius of curvature of an object-side surface of the fifth lens at an optical axis, and R52 is a radius of curvature of an image-side surface of the fifth lens at the optical axis.

8. The optical imaging lens of claim 1, wherein the optical imaging lens further satisfies the conditional expression: 2 < R61/CT6 < 6, R61 is a curvature radius of an image side surface of the sixth lens element at an optical axis, and CT6 is a thickness of the sixth lens element at the optical axis.

9. The optical imaging lens of claim 1, further satisfying the conditional expression that ImgH > 4.5mm, and ImgH is half of the image height corresponding to the maximum field angle of the optical imaging lens.

10. A camera module, comprising a photosensitive element and the optical imaging lens according to any one of claims 1 to 9, wherein the photosensitive element is disposed on an image side of the optical imaging lens.

11. An electronic device characterized in that it comprises a camera module as claimed in claim 10.