CN218848434U - Optical imaging lens - Google Patents

Abstract

The application discloses an optical imaging lens, which comprises a lens barrel, a six-piece lens group and a plurality of assembly elements, wherein the six-piece lens group and the plurality of assembly elements are arranged in the lens barrel, the six-piece lens group 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 an object side to an image side along an optical axis, the first lens has positive refractive power, the sixth lens has negative refractive power, and the image side surface of the sixth lens has at least one inflection point; the plurality of assemblage elements comprises at least a first assemblage element, a fourth assemblage element and a fifth assemblage element; wherein, the effective focal length f1 of the first lens, the effective focal length f6 of the sixth lens, the maximum thickness CP1 of the first assembly element and the interval EP45 between the fourth assembly element and the fifth assembly element along the optical axis satisfy: 1.5< | f1+ f6 |/(CP 1+ EP 45) <13.5.

Description

Optical imaging lens

Technical Field

The application relates to the field of optical devices, in particular to a six-piece type optical imaging lens.

Background

With the continuous development of scientific technology, optical imaging lenses of portable devices such as mobile phones with high imaging quality are widely used, for example, wide-angle lenses and wide-angle lenses are widely used on flagships or high-end machines, and in order to improve competitiveness, wide-angle lenses with high yield and low cost are a future development trend.

In order to meet the imaging requirements of the six-piece optical imaging lens, the rationality of the position design of the sensitive lenses is easily ignored, for example, the arrangement of the interval, the thickness and the like of the assembling elements at the positions of the first lens and the last lens is unreasonable, and the unreasonable can seriously affect the performance of the optical imaging lens.

SUMMERY OF THE UTILITY MODEL

The present application provides an optical imaging lens that may solve, at least, or at least partially solve, at least one problem or other problems of the related art.

An aspect of the present application provides an optical imaging lens, which includes a lens barrel, and a six-piece lens group and a plurality of assembly components disposed in the lens barrel, wherein the six-piece lens group includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens, which are sequentially arranged from an object side to an image side along an optical axis, the first lens has a positive refractive power, the sixth lens has a negative refractive power, and an image side surface of the sixth lens has at least one inflection point; the plurality of assembling elements at least comprise a first assembling element, a fourth assembling element and a fifth assembling element, the first assembling element is arranged between the first lens and the second lens and is abutted against the image side surface of the first lens, the fourth assembling element is arranged between the fourth lens and the fifth lens and is abutted against the image side surface of the fourth lens, and the fifth assembling element is arranged between the fifth lens and the sixth lens and is abutted against the image side surface of the fifth lens; wherein, the effective focal length f1 of the first lens, the effective focal length f6 of the sixth lens, the maximum thickness CP1 of the first assembly element and the interval EP45 between the fourth assembly element and the fifth assembly element along the optical axis satisfy: 1.5< | f1+ f6 |/(CP 1+ EP 45) <13.5.

According to an exemplary embodiment of the present application, the plurality of assembling elements further includes a second assembling element and a third assembling element, the second assembling element is disposed between the second lens and the third lens and abuts against the image side surface of the second lens, and the third assembling element is disposed between the third lens and the fourth lens and abuts against the image side surface of the third lens; wherein, optical imaging lens still satisfies: 2< (Dis + Dis)/EPD <5,i =2, 3, 4 or 5, wherein, when i is 2, dis represents the inner diameter of the object side surface of the second discrete element, and Dis represents the outer diameter of the object side surface of the second discrete element; when i is 3, dis represents the inner diameter of the object side surface of the third three-dimensional element, and Dis represents the outer diameter of the object side surface of the third three-dimensional element; when i is 4, dis represents the inner diameter of the object side surface of the fourth discrete element, and Dis represents the outer diameter of the object side surface of the fourth discrete element; when i is 5, dis represents the inner diameter of the object side surface of the fifth assembly element, and Dis represents the outer diameter of the object side surface of the fifth assembly element; EPD is the entrance pupil diameter of the optical imaging lens.

According to an exemplary embodiment of the present application, the total effective focal length f of the optical imaging lens, the inner diameter djm of the image side surface of the assembly element abutting on the image side surface of the first to sixth lens elements with positive refractive power satisfy: 0.5 woven-of-f/djm <2.5, where j =1, 3, 4 or 5.

According to an exemplary embodiment of the application, the combined focal length f23 of the second and third mirror plates, the inner diameter d2s of the object-side surface of the second stereoscopic element and the inner diameter d2m of the image-side surface of the second stereoscopic element satisfy: 5< | f23 |/(d 2s + d2 m) <13.

According to an exemplary embodiment of the present application, the effective focal length f2 of the second lens, the radius of curvature R3 of the object-side surface of the second lens, the inner diameter D1m of the image-side surface of the first upstanding element and the outer diameter D1m of the image-side surface of the first upstanding element satisfy: -6< (f 2 xR 3)/(D1 m xD 1 m) < -3.

According to an exemplary embodiment of the application, the effective focal length f3 of the third lens, the effective focal length f4 of the fourth lens and the inner diameter d3s of the object-side surface of the third three-dimensional element satisfy: 0.1< | f3+ f4|/d3s <8.1.

According to an exemplary embodiment of the application, the radius of curvature R6 of the image side surface of the third lens, the radius of curvature R7 of the object side surface of the fourth lens, the inner diameter D3m of the image side surface of the third stereoscopic element and the outer diameter D3m of the image side surface of the third stereoscopic element satisfy: 1< | R6+ R7 |/(D3 m + D3 m) <3.

According to an exemplary embodiment of the application, the effective focal length f4 of the fourth lens, the effective focal length f5 of the fifth lens, the spacing EP34 of the third and fourth stereoscopic elements along the optical axis and the maximum thickness CP4 of the fourth stereoscopic element satisfy: 11< | f4-f5 |/(EP 34+ CP 4) <21.

According to an exemplary embodiment of the application, the radius of curvature R8 of the image-side surface of the fourth lens, the radius of curvature R9 of the object-side surface of the fifth lens, the inner diameter D4s of the object-side surface of the fourth stereoscopic element and the outer diameter D4s of the object-side surface of the fourth stereoscopic element satisfy: 5< | R8+ R9 |/(D4 s + D4 s) <8.

According to an exemplary embodiment of the application, the effective focal length f5 of the fifth lens, the radius of curvature R10 of the image-side surface of the fifth lens, the inner diameter d5s of the object-side surface of the fifth assembly element and the maximum thickness CP5 of the fifth assembly element satisfy: -117< (f 5 × R10)/(d 5s × CP 5) < -26.

According to an exemplary embodiment of the present application, the inner diameter d1s of the object side surface of the first constituent element, the inner diameter d5m of the image side surface of the fifth constituent element and the entrance pupil diameter EPD of the optical imaging lens satisfy: 2< (d 1s + d5 m)/EPD <3.

According to an exemplary embodiment of the present application, a total effective focal length f of the optical imaging lens, an on-axis distance TD from an object-side surface of the first lens to an image-side surface of the sixth lens, an inner diameter d0s of the object-side end surface of the barrel, and a spacing EP01 along the optical axis between the object-side end surface of the barrel and the first assemblage element satisfy: 4< (f × TD)/(d 0s × EP 01) <9.

According to an exemplary embodiment of the present application, at least one of the fourth to sixth lenses is meniscus shaped in the paraxial region.

According to an exemplary embodiment of the present application, the radius of curvature R1 of the object-side surface of the first lens and the radius of curvature R12 of the image-side surface of the sixth lens satisfy: r1> R12>0.

The first assemblage component and the last two assemblage components in the six-piece type optical imaging lens are sensitive, the effective focal length of the first lens is controlled, the effective focal length of the sixth lens is controlled, the maximum thickness of the first assemblage component and the mutual relation between the intervals of the fourth assemblage component and the fifth assemblage component along the optical axis are controlled, the intervals of the fourth assemblage component and the fifth assemblage component along the optical axis can be controlled when the maximum thickness of the first assemblage component is in a reasonable interval, the influence of the sensitive assemblage component on the defocusing performance of the optical imaging lens is avoided, the performance of the optical imaging lens is improved, and the assembling stability and the imaging quality of the optical imaging lens are improved.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the detailed description of non-limiting embodiments made with reference to the following drawings:

fig. 1 shows a schematic structural diagram of an optical imaging lens according to the present application;

fig. 2 shows a schematic configuration diagram of an optical imaging lens according to example 1 of the first embodiment of the present application;

fig. 3 shows a schematic configuration diagram of an optical imaging lens according to example 2 of the first embodiment of the present application;

fig. 4 shows a schematic configuration diagram of an optical imaging lens according to example 3 of the first embodiment of the present application;

fig. 5A to 5C show an axial chromatic aberration curve, an astigmatism curve, and a distortion curve, respectively, of an optical imaging lens according to a first embodiment of the present application;

fig. 6 shows a schematic configuration diagram of an optical imaging lens according to example 1 of a second embodiment of the present application;

fig. 7 shows a schematic configuration diagram of an optical imaging lens according to example 2 of the second embodiment of the present application;

fig. 8 is a schematic structural view showing an optical imaging lens according to example 3 of the second embodiment of the present application;

fig. 9A to 9C show an axial chromatic aberration curve, an astigmatism curve, and a distortion curve, respectively, of an optical imaging lens according to a second embodiment of the present application;

fig. 10 is a schematic configuration diagram showing an optical imaging lens according to example 1 of a third embodiment of the present application;

fig. 11 is a schematic structural view showing an optical imaging lens according to example 2 of a third embodiment of the present application;

fig. 12 is a schematic structural view showing an optical imaging lens according to example 3 of a third embodiment of the present application; and

fig. 13A to 13C show an axial chromatic aberration curve, an astigmatism curve, and a distortion curve, respectively, of an optical imaging lens according to a third embodiment of the present application.

Detailed Description

For a better understanding of the present application, various aspects of the present application will be described in more detail with reference to the accompanying drawings. It should be understood that the detailed description is merely illustrative of exemplary embodiments of the present application and does not limit the scope of the present application in any way. Like reference numerals refer to like elements throughout the specification.

It should be noted that in this specification, the expressions first, second, third, etc. are used only to distinguish one feature from another, and do not represent any limitation on the features. Thus, a first lens discussed below may also be referred to as a second lens or a third lens without departing from the teachings of the present application.

In the drawings, the thickness, size and shape of the lenses have been slightly exaggerated for convenience of explanation. In particular, the shapes of the spherical or aspherical surfaces shown in the drawings are shown by way of example. That is, the shape of the spherical surface or the aspherical surface is not limited to the shape of the spherical surface or the aspherical surface shown in the drawings. The figures are purely diagrammatic and not drawn to scale.

Herein, the paraxial region refers to a region near the optical axis. If the lens surface is convex and the convex position is not defined, it means that the lens surface is convex at least in the paraxial region; if the lens surface is concave and the concave position is not defined, it means that the lens surface is concave at least in the paraxial region. The surface of each lens closest to the object to be shot is called the object side surface of the lens, and the surface of each lens closest to the imaging surface is called the image side surface of the lens.

It will be further understood that the terms "comprises," "comprising," "has," "having," "includes" and/or "including," when used in this specification, specify the presence of stated features, elements, and/or components, but do not preclude the presence or addition of one or more other features, elements, components, and/or groups thereof. Furthermore, when describing embodiments of the present application, the use of "may" mean "one or more embodiments of the present application. Also, the term "exemplary" is intended to refer to an example or illustration.

Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

The features, principles, and other aspects of the present application are described in detail below.

The optical imaging lens according to the exemplary embodiment of the present application may include a lens barrel and a six-piece lens group disposed in the lens barrel, wherein the six-piece lens group includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens, and the six lenses are sequentially arranged from an object side to an image side along an optical axis. In the first lens to the sixth lens, any two adjacent lenses can have an air space therebetween. The first lens element with positive refractive power, the sixth lens element with negative refractive power, and the image-side surface of the sixth lens element with at least one inflection point. The trend of the effective diameter edge of the image side surface of the sixth lens is towards the right, the bearing position of the fifth lens is limited by the lens cone structure, and the bearing structure of the fifth lens and the bearing structure of the sixth lens can be ensured to be stable by arranging an inflection point on the bearing structure of the image side surface of the sixth lens and the effective diameter edge.

The optical imaging lens can further comprise a plurality of assembly elements arranged in the lens barrel, wherein the plurality of assembly elements at least comprise a first assembly element, a fourth assembly element and a fifth assembly element, the first assembly element is arranged between the first lens and the second lens and abuts against the image side surface of the first lens, the fourth assembly element is arranged between the fourth lens and the fifth lens and abuts against the image side surface of the fourth lens, and the fifth assembly element is arranged between the fifth lens and the sixth lens and abuts against the image side surface of the fifth lens. The assembly elements at the positions of the first lens and the last lens are sensitive, and the sensitive assembly elements need to be regulated and controlled to improve the performance of the optical imaging lens. In an example, the effective focal length f1 of the first lens, the effective focal length f6 of the sixth lens, the maximum thickness CP1 of the first assembly element, and the spacing EP45 along the optical axis of the fourth assembly element and the fifth assembly element may satisfy: 1.5< | f1+ f6 |/(CP 1+ EP 45) <13.5. Through the effective focal length of control first lens, the effective focal length of sixth lens, the maximum thickness of first assemblage component and the fourth assemblage component and the interval of fifth assemblage component along the optical axis between the interrelation, can be in the interval of reasonable while control fourth assemblage component and the interval of fifth assemblage component along the optical axis making the maximum thickness of first assemblage component, avoid sensitive assemblage component to optical imaging lens's out of focus performance to produce the influence, improve optical imaging lens's performance, and promote optical imaging lens's equipment stability and imaging quality.

The plurality of assembling elements can also comprise a second assembling element which is arranged between the second lens and the third lens and is abutted against the image side surface of the second lens, and a third assembling element which is arranged between the third lens and the fourth lens and is abutted against the image side surface of the third lens. The reasonable use of the assembly element can effectively avoid the risk of stray light, reduce the interference to the image quality and further improve the imaging quality of the optical imaging lens. These assemblage elements will be described in detail below.

In an exemplary embodiment, the lens barrel has an object-side end surface and an image-side end surface, and an opening diameter of the object-side end surface is smaller than an opening diameter of the image-side end surface. Because the optical imaging lens needs and considers that the matching state in the camera module when the optical imaging lens is used as an assembly part is that the image side is fixed and the object side is suspended, the structure that the object side is small, the image side is large and gradient transition is adopted in the middle is adopted, and the extrusion deformation of the optical imaging lens after the image side is stressed can be reduced as much as possible on the premise of ensuring the wall thickness of the lens cone.

In an exemplary embodiment, the optical imaging lens further satisfies: 2< (Dis + Dis)/EPD <5,i =2, 3, 4 or 5, wherein, when i is 2, dis represents the inner diameter of the object side surface of the second discrete element, and Dis represents the outer diameter of the object side surface of the second discrete element; when i is 3, dis represents the inner diameter of the object side surface of the third three-dimensional element, and Dis represents the outer diameter of the object side surface of the third three-dimensional element; when i is 4, dis represents the inner diameter of the object side surface of the fourth discrete element, and Dis represents the outer diameter of the object side surface of the fourth discrete element; when i is 5, dis represents the inner diameter of the object side surface of the fifth assembly element, and Dis represents the outer diameter of the object side surface of the fifth assembly element; EPD is the entrance pupil diameter of the optical imaging lens. In the above conditional expression, i may be used to indicate the numbers of the lenses having abbe numbers of less than 50 for the first to sixth lenses. The first lens to the sixth lens are all injection molded lenses, because the injection molded lenses have the characteristic of one cavity and multiple cavities, the performance of the lenses can be affected by the fine size difference among the cavity number lenses, so that the performance of the optical imaging lens is poor, the Abbe number of the injection molded lenses is divided into two grades, specifically, the lenses with the Abbe number smaller than 50 and the lenses with the Abbe number larger than 50, by controlling the conditional expression, the inner and outer diameters of the object side surface of the assembling element at the image side surface of the lens with the Abbe number smaller than 50 can be limited in a reasonable interval, the performance of the optical imaging lens caused by the performance difference of the lenses can be prevented to a certain extent, the optical performance of the optical imaging lens is ensured, and various available cavity number lenses can be produced.

In an exemplary embodiment, the total effective focal length f of the optical imaging lens, the inner diameter djm of the image side surface of the assembly element abutting the image side surface of the lens with positive refractive power from the first lens element to the sixth lens element satisfy: 0.5 woven-of-f/djm <2.5, where j =1, 3, 4 or 5. The performance of the optical imaging lens can be directly influenced by the assembling element at the internal space position of the optical imaging lens, and the stray light performance of the optical imaging lens can also be directly influenced by the assembling element.

In an exemplary embodiment, the combined focal length f23 of the second and third lenses, the inner diameter d2s of the object side surface of the second stereoscopic element, and the inner diameter d2m of the image side surface of the second stereoscopic element satisfy: 5< | f23 |/(d 2s + d2 m) <13. The second assemblage component adopts the inclined plane design, the key of whether the second assemblage component can completely block the strong veiling glare lies in the inclination of the inclined plane, the inner diameters of the object side surface and the image side surface of the second assemblage component can be respectively controlled in reasonable intervals by controlling the mutual relation between the combined focal distance of the second lens and the third lens and the inner diameters of the object side surface and the image side surface of the second assemblage component, and then the inclination of the second assemblage component near the optical axis surface is ensured, and the purpose of completely blocking the veiling glare is achieved.

In an exemplary embodiment, the effective focal length f2 of the second lens, the radius of curvature R3 of the object-side surface of the second lens, the inner diameter D1m of the image-side surface of the first upstanding element, and the outer diameter D1m of the image-side surface of the first upstanding element satisfy: -6< (f 2 xR 3)/(D1 m xD 1 m) < -3. The optical imaging lens is a middle-placed diaphragm lens, the first standing element can have certain influence on the performance of the optical imaging lens, the effective focal length of the second lens is controlled, the curvature radius of the object side surface of the second lens and the inner and outer diameters of the image side surface of the first standing element are in mutual relation, so that the inner and outer diameters of the image side surface of the first standing element are in a reasonable interval, part of performance parameters of the optical imaging lens are subjected to fine adjustment, size fluctuation of other parts and components is compensated, and slight influence in the production process is compensated, and the performance of the optical imaging lens is improved.

In an exemplary embodiment, at least one of the fourth through sixth lenses is meniscus shaped in the paraxial region. The effective diameter shape of the paraxial region is calculated by an optical system, the deformation trend of the lens is single when the lens is loaded in the lens barrel due to the synchronous shape, and the effect of fine adjustment on the performance of the optical imaging lens can be achieved by controlling the deformation quantity of part of the lens in the actual assembling and reliability verification processes, so that the performance and yield of the optical imaging lens are improved.

In an exemplary embodiment, the radius of curvature R1 of the object-side surface of the first lens and the radius of curvature R12 of the image-side surface of the sixth lens satisfy: r1> R12>0. The curvature radius of the object side surface of the first lens is larger than that of the image side surface of the sixth lens, so that the surface types of the two lenses can be reasonably controlled, the trend of light rays can be controlled, and the imaging requirement of the optical imaging lens is further ensured.

In an exemplary embodiment, the effective focal length f3 of the third lens, the effective focal length f4 of the fourth lens and the inner diameter d3s of the object-side surface of the third three-dimensional element satisfy: 0.1< | f3+ f4|/d3s <8.1. The mutual relation among the effective focal length of the third lens, the effective focal length of the fourth lens and the inner diameter of the object side face of the third three-dimensional element is reasonably controlled, so that the inner diameter of the third three-dimensional element is within a preset range, the problem of abnormal stray light or light leakage caused by overlarge or undersize inner diameter is avoided, and the quality and the yield of the optical imaging lens are improved.

In an exemplary embodiment, the radius of curvature R6 of the image-side surface of the third lens, the radius of curvature R7 of the object-side surface of the fourth lens, the inner diameter D3m of the image-side surface of the third three-dimensional element and the outer diameter D3m of the image-side surface of the third three-dimensional element satisfy: 1< | R6+ R7 |/(D3 m + D3 m) <3. The third three-dimensional element plays an important role in blocking partial strong parasitic light abnormity and avoiding light leakage, the spatial position of the third three-dimensional element in the optical imaging lens can be ensured by controlling the curvature radius of the image side surface of the third lens and the mutual relation between the curvature radius of the object side surface of the fourth lens and the inner and outer diameters of the image side surface of the third three-dimensional element, so that the optical imaging lens cannot slightly shift to one side due to the third three-dimensional element, the generation of local light leakage is avoided, the size of the sensitive three-dimensional element can be controlled simultaneously, the optical parameters of the optical imaging lens can be stabilized, and the quality of the optical imaging lens is improved.

In an exemplary embodiment, the effective focal length f4 of the fourth lens, the effective focal length f5 of the fifth lens, the spacing EP34 of the third and fourth stereoscopic elements along the optical axis and the maximum thickness CP4 of the fourth stereoscopic element satisfy: 11< | f4-f5 |/(EP 34+ CP 4) <21. The effective focal length of the fourth lens, the effective focal length of the fifth lens, the mutual relation between the interval of the third three-dimensional element and the fourth three-dimensional element along the optical axis and the maximum thickness of the fourth three-dimensional element are reasonably controlled, the fourth lens is controlled to have the maximum edge thickness in all lens parts while having proper optical sensitivity, the fourth lens has the optimal structural stability, the fourth three-dimensional element is ensured to be in a relatively stable space environment, the defocusing performance of the optical imaging lens is finely adjusted, the yield and the quality of the optical imaging lens are improved, more points are taken, and the comprehensive advantages of the optical imaging lens are enhanced.

In an exemplary embodiment, the radius of curvature R8 of the image-side surface of the fourth lens, the radius of curvature R9 of the object-side surface of the fifth lens, the inner diameter D4s of the object-side surface of the fourth stereoscopic element and the outer diameter D4s of the object-side surface of the fourth stereoscopic element satisfy: 5< | R8+ R9 |/(D4 s + D4 s) <8. The defocusing performance of the optical imaging lens can be finely adjusted by utilizing the fourth three-dimensional element, for example, performance fluctuation brought in various forming and assembling processes can be balanced by finely adjusting the size of the fourth three-dimensional element, and the inner and outer diameters of the fourth three-dimensional element are in a reasonable interval by controlling the mutual relationship among the curvature radius of the image side surface of the fourth lens, the curvature radius of the object side surface of the fifth lens and the inner and outer diameters of the object side surface of the fourth three-dimensional element, so that optical performance deviation caused by abnormal assembly in the process of fine adjustment of the size for several times is avoided, and the performance stability of the optical imaging lens is improved.

In an exemplary embodiment, the effective focal length f5 of the fifth lens, the radius of curvature R10 of the image-side surface of the fifth lens, the inner diameter d5s of the object-side surface of the fifth assembly element, and the maximum thickness CP5 of the fifth assembly element satisfy: -117< (f 5 × R10)/(d 5s × CP 5) < -26. The effective focal length of the fifth lens, the curvature radius of the image side surface of the fifth lens, the inner diameter of the object side surface of the fifth assembling element and the maximum thickness of the fifth assembling element are reasonably controlled, so that the deformation of the fifth assembling element can be reduced while the inner diameter of the fifth assembling element is in a reasonable interval, the light leakage at the edge of the fifth lens is avoided being emitted along the edge of the inner hole of the fifth assembling element, the generation of inner reflecting stray light is avoided, and the stray light abnormity caused by size fluctuation of the fifth lens or micro deformation of the assembling element is prevented.

In an exemplary embodiment, the inner diameter d1s of the object side surface of the first constituent element, the inner diameter d5m of the image side surface of the fifth constituent element, and the entrance pupil diameter EPD of the optical imaging lens satisfy: 2< (d 1s + d5 m)/EPD <3. The mutual relation among the inner diameter of the object side surface of the first assembly element, the inner diameter of the image side surface of the fifth assembly element and the entrance pupil diameter of the optical imaging lens is reasonably controlled, the optical performance of the optical imaging lens can be preliminarily controlled not to be changed, and the optical imaging lens is prevented from generating similar phenomena such as poor relative brightness.

In an exemplary embodiment, the total effective focal length f of the optical imaging lens, the on-axis distance TD from the object-side surface of the first lens to the image-side surface of the sixth lens, the inner diameter d0s of the object-side end surface of the lens barrel, and the interval EP01 along the optical axis between the object-side end surface of the lens barrel and the first assemblage element satisfy: 4< (f × TD)/(d 0s × EP 01) <9. The total effective focal length of the optical imaging lens, the axial distance from the object side surface of the first lens to the image side surface of the sixth lens, and the correlation relationship between the inner diameter of the object side end surface of the lens barrel and the interval between the object side end surface of the lens barrel and the first assemblage element along the optical axis are reasonably controlled, so that the total effective focal length of the optical imaging lens can be integrally controlled while the sizes of the lenses and the lens barrel are reasonably distributed, and the optical performance of the optical imaging lens is prevented from being abnormal.

In an exemplary embodiment, the optical imaging lens further includes a diaphragm, which can be disposed between the first lens and the second lens according to actual needs,

the optical imaging lens according to the above-described embodiment of the present application may employ six lenses and a plurality of assembly members, such as the above six lenses and five assembly members. Through the optical parameters of each lens and each assemblage element which are reasonably distributed, the performance of the optical imaging lens can be finely adjusted, the risk of stray light is reduced, and the performance, the quality and the yield of the optical imaging lens are improved.

In the embodiment of the present application, at least one of the mirror surfaces of each of the first to sixth lenses is an aspherical mirror surface. The aspheric lens has the characteristics that: the curvature varies continuously from the center of the lens to the periphery of the lens. Unlike a spherical lens having a constant curvature from the lens center to the lens periphery, an aspherical lens has a better curvature radius characteristic, and has advantages of improving distortion aberration and improving astigmatism aberration. After the aspheric lens is adopted, the aberration generated in imaging can be eliminated as much as possible, and the imaging quality is further improved.

However, it will be understood by those skilled in the art that the number of lenses and assembly elements constituting an optical imaging lens may be varied without departing from the technical solutions claimed in the present application to obtain the respective results and advantages described in the present specification. For example, although six lenses and five assembly elements are exemplified in the embodiment, the optical imaging lens is not limited to include six lenses and five assembly elements. The optical imaging lens may also include other numbers of lenses or assembly elements, if desired.

Specific examples of an optical imaging lens applicable to the above-described embodiments are further described below with reference to the drawings.

First embodiment

An optical imaging lens according to a first embodiment of the present application is described below with reference to fig. 2 to 5C. Fig. 2 shows a schematic configuration diagram of an optical imaging lens 110 according to example 1 of the first embodiment of the present application; fig. 3 shows a schematic configuration diagram of an optical imaging lens 120 according to example 2 of the first embodiment of the present application; fig. 4 shows a schematic structural diagram of an optical imaging lens 130 according to example 3 of the first embodiment of the present application.

As shown in fig. 2 to 4, each of the optical imaging lenses 110, 120, and 130 includes a lens barrel P0, and a six-piece lens group and a plurality of assembly components disposed in the lens barrel P0, wherein the six-piece lens group includes, in order from an object side to an image side: a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, and a sixth lens E6. The stop STO can be disposed between the first lens E1 and the second lens E2 according to actual needs. The plurality of assemblage members comprises: a first stand-off element P1, a second stand-off element P2, a third stand-off element P3, a fourth stand-off element P4 and a fifth stand-off element P5. The assembling elements P1-P5 can block the entry of external redundant light, so that the lens and the lens cone P0 are better supported, and the structural stability of the optical imaging lens is enhanced.

The first lens element E1 with positive refractive power has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 with negative refractive power has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 with positive refractive power has a convex object-side surface S5 and a convex image-side surface S6. The fourth lens element E4 with positive refractive power has a concave object-side surface S7 and a convex image-side surface S8. The fifth lens element E5 with negative refractive power has a concave object-side surface S9 and a concave image-side surface S10. The sixth lens element E6 with negative refractive power has a convex object-side surface S11 and a concave image-side surface S12. The filter has an object side surface S13 (not shown) and an image side surface S14 (not shown). The light from the object passes through the respective surfaces S1 to S14 in order and is finally imaged on the imaging surface S15 (not shown in the figure).

Table 1 shows a basic parameter table of the optical imaging lens of the first embodiment, in which the unit of the radius of curvature, the thickness/distance, and the focal length are all millimeters (mm).

TABLE 1

In this embodiment, the total effective focal length f of the optical imaging lens is 4.43mm, the on-axis distance TD between the object-side surface of the first lens and the image-side surface of the sixth lens is 4.396mm, the ImgH, which is a half of the diagonal length of the effective pixel region on the imaging surface, is 3.26mm, and the entrance pupil diameter EPD of the optical imaging lens is 2.47mm.

In the first embodiment, the object-side surface and the image-side surface of any one of the first lens E1 to the sixth lens E6 are aspheric surfaces, and the surface type x of each aspheric lens can be defined by, but is not limited to, the following aspheric formula:

wherein x is the distance rise from the vertex of the aspheric surface 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 =1/R (i.e., paraxial curvature c is the inverse of radius of curvature R in table 1 above); 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 A that can be used for each of the aspherical mirror surfaces S1 to S12 in the first embodiment ₄ 、A ₆ 、A ₈ 、A ₁₀ 、A ₁₂ 、A ₁₄ 、A ₁₆ 、A ₁₈ And A ₂₀ 。

TABLE 2

The optical imaging lenses 110, 120, and 130 in examples 1, 2, and 3 of the first embodiment are different in the structural sizes of the lens barrel and the assembly member included therein. Tables 3-1 to 3-2 show some basic parameters of the lens barrels and the assembly members of the optical imaging lenses 110, 120, and 130 of the first embodiment, such as D1s, D1m, D2s, D2m, D2s, D3m, D3s, D3m, D4s, D4m, D4s, D5m, D5s, D0s, EP01, CP1, EP34, CP4, EP45, and CP5, etc., some of the basic parameters shown in tables 3-1 to 3-2 are measured according to the labeling method shown in fig. 1, and the units of the basic parameters shown in tables 3-1 to 3-2 are all millimeters (mm).

Examples/parameters	d1s	d1m	D1m	d2s	d2m	D2s	d3s	d3m	D3s	D3m	d4s	d4m
													1-1	2.261	2.261	4.815	1.932	1.932	5.064	2.410	2.410	5.561	5.561	3.272	3.272
1-2	2.240	2.240	4.815	1.934	1.934	5.064	2.504	2.504	5.561	5.561	3.310	3.310
													1-3	2.292	2.292	4.815	1.928	1.928	5.064	2.394	2.394	5.561	5.561	3.255	3.255

TABLE 3-1

Examples/parameters	D4s	d5s	d5m	D5s	d0s	EP01	CP1	EP34	CP4	EP45	CP5
												1-1	6.183	4.394	4.394	6.681	3.437	0.660	0.020	0.914	0.019	0.386	0.040
1-2	6.183	4.477	4.477	6.681	3.437	0.682	0.020	0.823	0.019	0.409	0.040
												1-3	6.183	4.476	4.476	6.681	3.437	0.634	0.020	0.924	0.019	0.373	0.040

TABLE 3-2

Fig. 5A shows on-axis chromatic aberration curves of the optical imaging lenses 110, 120, and 130 of the first embodiment, which represent the deviation of the convergent focal points of light rays of different wavelengths after passing through the optical imaging lenses 110, 120, and 130. Fig. 5B illustrates astigmatism curves of the optical imaging lenses 110, 120, and 130 of the first embodiment, which represent meridional field curvature and sagittal field curvature corresponding to different image heights. Fig. 5C shows distortion curves of the optical imaging lenses 110, 120, and 130 of the first embodiment, which represent distortion magnitude values corresponding to different image heights. As can be seen from fig. 5A to 5C, the optical imaging lenses 110, 120, and 130 according to the first embodiment can achieve good imaging quality.

Second embodiment

An optical imaging lens according to a second embodiment of the present application is described below with reference to fig. 6 to 9C. Fig. 6 shows a schematic configuration diagram of an optical imaging lens 210 according to example 1 of the second embodiment of the present application; fig. 7 shows a schematic configuration diagram of an optical imaging lens 220 according to example 2 of the second embodiment of the present application; fig. 8 shows a schematic configuration diagram of an optical imaging lens 230 according to example 3 of the second embodiment of the present application.

As shown in fig. 6 to 8, each of the optical imaging lenses 210, 220, and 230 includes a lens barrel P0, and a six-piece lens group and a plurality of assembly components disposed in the lens barrel P0, the six-piece lens group includes, in order from an object side to an image side: a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, and a sixth lens E6. The stop STO can be disposed between the first lens E1 and the second lens E2 according to actual needs. The plurality of assemblage members comprises: a first stand-off element P1, a second stand-off element P2, a third stand-off element P3, a fourth stand-off element P4 and a fifth stand-off element P5. The assembling elements P1-P5 can block the entry of external redundant light, so that the lens and the lens cone P0 are better supported, and the structural stability of the optical imaging lens is enhanced.

The first lens element E1 with positive refractive power has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 with negative refractive power has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 with positive refractive power has a concave object-side surface S5 and a convex image-side surface S6. The fourth lens element E4 with negative refractive power has a concave object-side surface S7 and a convex image-side surface S8. The fifth lens element E5 with positive refractive power has a convex object-side surface S9 and a convex image-side surface S10. The sixth lens element E6 with negative refractive power has a concave object-side surface S11 and a concave image-side surface S12. The filter has an object side surface S13 (not shown) and an image side surface S14 (not shown). The light from the object passes through the respective surfaces S1 to S14 in order and is finally imaged on the imaging surface S15 (not shown in the figure).

Table 4 shows a basic parameter table of the optical imaging lens of the second embodiment, in which the units of the radius of curvature, the thickness/distance, and the focal length are millimeters (mm).

TABLE 4

In this embodiment, the total effective focal length f of the optical imaging lens is 4.45mm, the on-axis distance TD between the object-side surface of the first lens and the image-side surface of the sixth lens is 4.471mm, the ImgH, which is a half of the diagonal length of the effective pixel region on the imaging surface, is 3.50mm, and the entrance pupil diameter EPD of the optical imaging lens is 2.83mm.

In the second embodiment, both the object-side surface and the image-side surface of any one of the first lens E1 to the sixth lens E6 are aspheric. Tables 5-1 to 5-2 show the coefficients A of the high-order terms which can be used for the aspherical mirror surfaces S1 to S12 in the second embodiment ₄ 、A ₆ 、A ₈ 、A ₁₀ 、A ₁₂ 、A ₁₄ 、A ₁₆ 、A ₁₈ 、A ₂₀ 、A ₂₂ 、A ₂₄ 、A ₂₆ 、A ₂₈ And A ₃₀ 。

Flour mark

A4

A6

A8

A10

A12

A14

A16

S1

1.1481E-03

1.2038E-02

-3.8694E-02

7.5538E-02

-8.9789E-02

6.5789E-02

-2.9195E-02

S2

-1.1562E-02

1.9895E-03

2.0727E-02

-5.4752E-02

7.3582E-02

-6.0464E-02

2.9936E-02

S3

-6.6665E-02

4.2247E-01

-3.8299E+00

2.3298E+01

-9.3882E+01

2.6116E+02

-5.1505E+02

S4

6.6755E-03

-2.4338E-02

3.1401E-01

-1.1825E+00

2.6585E+00

-3.6510E+00

3.0148E+00

S5

-4.7509E-02

3.4355E-01

-3.1867E+00

1.5424E+01

-4.2894E+01

5.6357E+01

3.5811E+01

S6

1.5100E-02

-6.6389E-01

5.0835E+00

-2.6090E+01

8.9877E+01

-2.1482E+02

3.6499E+02

S7

-2.5115E-02

3.3681E-01

-3.3534E+00

1.4872E+01

-4.1170E+01

7.8093E+01

-1.0530E+02

S8

2.6444E-02

-1.8329E-01

-9.1499E-02

1.0482E+00

-2.3817E+00

3.2279E+00

-2.9489E+00

S9

1.3879E-01

-2.1826E-01

3.0662E-01

-5.0723E-01

6.6353E-01

-6.1912E-01

4.0950E-01

S10

3.2555E-01

-3.4541E-01

4.3196E-01

-5.5327E-01

5.3430E-01

-3.6538E-01

1.7701E-01

S11

7.6615E-02

-2.3561E-01

2.3247E-01

-1.3774E-01

5.2235E-02

-1.2543E-02

1.8401E-03

S12

-7.0996E-02

3.7768E-03

1.7255E-02

-1.6081E-02

1.0995E-02

-6.5510E-03

3.0895E-03

TABLE 5-1

Flour mark

A18

A20

A22

A24

A26

A28

A30

S1

7.1865E-03

-7.6086E-04

0.0000E+00

0.0000E+00

0.0000E+00

0.0000E+00

0.0000E+00

S2

-8.1976E-03

9.4860E-04

0.0000E+00

0.0000E+00

0.0000E+00

0.0000E+00

0.0000E+00

S3

7.3031E+02

-7.4652E+02

5.4497E+02

-2.7699E+02

9.3085E+01

-1.8586E+01

1.6692E+00

S4

-1.3746E+00

2.6717E-01

0.0000E+00

0.0000E+00

0.0000E+00

0.0000E+00

0.0000E+00

S5

-2.9981E+02

6.1284E+02

-7.1754E+02

5.3072E+02

-2.4573E+02

6.5270E+01

-7.6077E+00

S6

-4.4678E+02

3.9507E+02

-2.4998E+02

1.1032E+02

-3.2228E+01

5.5978E+00

-4.3724E-01

S7

1.0253E+02

-7.2273E+01

3.6507E+01

-1.2874E+01

3.0088E+00

-4.1868E-01

2.6260E-02

S8

1.8666E+00

-8.0832E-01

2.2613E-01

-3.4426E-02

6.8681E-04

5.9579E-04

-6.5210E-05

S9

-1.9195E-01

6.3261E-02

-1.4355E-02

2.1493E-03

-1.9517E-04

8.9134E-06

-1.1113E-07

S10

-6.0743E-02

1.4592E-02

-2.3810E-03

2.4738E-04

-1.4043E-05

2.3155E-07

9.0483E-09

S11

-1.5063E-04

5.2783E-06

0.0000E+00

0.0000E+00

0.0000E+00

0.0000E+00

0.0000E+00

S12

-1.0617E-03

2.5741E-04

-4.3301E-05

4.9344E-06

-3.6297E-07

1.5541E-08

-2.9409E-10

TABLE 5-2

The optical imaging lenses 210, 220, and 230 in examples 1, 2, and 3 of the second embodiment are different in the structural sizes of the lens barrel and the assembly member included therein. Tables 6-1 to 6-2 show some basic parameters of the lens barrels and the assembly members of the optical imaging lenses 210, 220, and 230 of the second embodiment, such as D1s, D1m, D2s, D2m, D2s, D3m, D3s, D3m, D4s, D4m, D4s, D5m, D5s, D0s, EP01, CP1, EP34, CP4, EP45, and CP5, etc., some of the basic parameters shown in tables 6-1 to 6-2 are measured according to the labeling method shown in fig. 1, and the units of the basic parameters shown in tables 6-1 to 6-2 are millimeters (mm).

Examples/parameters	d1s	d1m	D1m	d2s	d2m	D2s	d3s	d3m	D3s	D3m	d4s	d4m
													2-1	2.509	2.509	4.963	2.287	2.287	5.205	2.675	2.675	5.689	5.689	3.277	3.277
2-2	2.520	2.520	4.963	2.281	2.281	5.205	2.665	2.665	5.689	5.689	3.249	3.249
													2-3	2.497	2.287	4.963	2.287	2.287	5.205	2.687	2.687	5.689	5.689	3.338	3.338

TABLE 6-1

Examples/parameters	D4s	d5s	d5m	D5s	d0s	EP01	CP1	EP34	CP4	EP45	CP5
												2-1	6.667	4.815	4.678	7.021	3.995	1.069	0.019	0.624	0.019	0.619	0.040
2-2	6.667	4.814	4.677	7.021	3.995	1.054	0.019	0.623	0.019	0.627	0.040
												2-3	6.667	4.834	4.695	7.021	3.995	1.088	0.019	0.635	0.019	0.601	0.040

TABLE 6-2

Fig. 9A shows on-axis chromatic aberration curves of the optical imaging lenses 210, 220, and 230 of the second embodiment, which represent the deviation of the convergent focal points of light rays of different wavelengths after passing through the optical imaging lenses 210, 220, and 230. Fig. 9B shows astigmatism curves of the optical imaging lenses 210, 220, and 230 of the second embodiment, which represent meridional field curvature and sagittal field curvature corresponding to different image heights. Fig. 9C shows distortion curves of the optical imaging lenses 210, 220, and 230 of the second embodiment, which represent distortion magnitude values corresponding to different image heights. As can be seen from fig. 9A to 9C, the optical imaging lenses 210, 220, and 230 according to the second embodiment can achieve good imaging quality.

Third embodiment

An optical imaging lens according to a third embodiment of the present application is described below with reference to fig. 10 to 13C. Fig. 10 shows a schematic configuration diagram of an optical imaging lens 310 according to example 1 of the third embodiment of the present application; fig. 11 shows a schematic configuration diagram of an optical imaging lens 320 according to example 2 of a third embodiment of the present application; fig. 12 shows a schematic configuration diagram of an optical imaging lens 330 according to example 3 of the third embodiment of the present application.

As shown in fig. 10 to 12, each of the optical imaging lenses 210, 220, and 230 includes a lens barrel P0, and a six-piece lens group and a plurality of assembly elements disposed in the lens barrel P0, the six-piece lens group includes, in order from an object side to an image side: a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5 and a sixth lens E6. The stop STO can be disposed between the first lens E1 and the second lens E2 according to actual requirements. The plurality of assemblage members comprises: a first stand-off element P1, a second stand-off element P2, a third stand-off element P3, a fourth stand-off element P4 and a fifth stand-off element P5. The assembling elements P1-P5 can block the entry of external redundant light, so that the lens and the lens cone P0 are better supported, and the structural stability of the optical imaging lens is enhanced.

The first lens element E1 with positive refractive power has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 with negative refractive power has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 with positive refractive power has a convex object-side surface S5 and a convex image-side surface S6. The fourth lens element E4 with negative refractive power has a concave object-side surface S7 and a convex image-side surface S8. The fifth lens element E5 with positive refractive power has a concave object-side surface S9 and a convex image-side surface S10. The sixth lens element E6 with negative refractive power has a concave object-side surface S11 and a concave image-side surface S12. The filter has an object side surface S13 (not shown) and an image side surface S14 (not shown). The light from the object passes through the respective surfaces S1 to S14 in order and is finally imaged on the imaging surface S15 (not shown in the figure).

Table 7 shows a basic parameter table of the optical imaging lens of the third embodiment, in which the units of the radius of curvature, the thickness/distance, and the focal length are millimeters (mm).

TABLE 7

In this embodiment, the total effective focal length f of the optical imaging lens is 4.60mm, the on-axis distance TD between the object-side surface of the first lens and the image-side surface of the sixth lens is 4.549mm, the ImgH, which is a half of the diagonal length of the effective pixel region on the imaging surface, is 3.50mm, and the entrance pupil diameter EPD of the optical imaging lens is 2.63mm.

In the third embodiment, both the object-side surface and the image-side surface of any one of the first lens E1 to the sixth lens E6 are aspheric. Tables 8-1 to 8-2 show the coefficients A of the high-order terms which can be used for the aspherical mirror surfaces S1 to S12 in the third embodiment ₄ 、A ₆ 、A ₈ 、A ₁₀ 、A ₁₂ 、A ₁₄ 、A ₁₆ 、A ₁₈ 、A ₂₀ 、A ₂₂ 、A ₂₄ 、A ₂₆ 、A ₂₈ And A ₃₀ 。

Flour mark

A4

A6

A8

A10

A12

A14

A16

S1

1.1841E-03

7.7915E-03

-3.1097E-02

7.0579E-02

-9.5952E-02

7.9450E-02

-3.9573E-02

S2

-1.1175E-02

1.2469E-03

3.0128E-02

-1.0234E-01

1.8041E-01

-1.8984E-01

1.1809E-01

S3

-7.8330E-02

4.9132E-01

-5.2458E+00

3.8764E+01

-1.9072E+02

6.4907E+02

-1.5682E+03

S4

-4.4570E-03

4.3619E-02

-2.0308E-02

-2.1416E-02

1.4583E-01

-2.7308E-01

2.6265E-01

S5

-8.8575E-02

9.9514E-01

-9.5939E+00

5.7577E+01

-2.3360E+02

6.6601E+02

-1.3659E+03

S6

-2.4492E-02

-5.7964E-02

3.4517E-01

-2.3079E+00

8.9597E+00

-2.1840E+01

3.5381E+01

S7

-9.0326E-03

-3.0132E-02

-7.0155E-01

3.2089E+00

-7.7342E+00

1.2582E+01

-1.4748E+01

S8

4.9556E-02

-1.8255E-01

-1.4846E-02

3.9688E-01

-5.2159E-01

2.8112E-01

2.2353E-02

S9

1.1362E-01

-9.0634E-02

1.1386E-02

-1.7009E-01

5.6728E-01

-8.5955E-01

7.9731E-01

S10

2.6211E-01

-2.4162E-01

3.6909E-01

-5.9370E-01

6.8554E-01

-5.4928E-01

3.0933E-01

S11

2.1774E-02

-6.8637E-02

-1.0565E-01

4.4218E-01

-6.9454E-01

6.6747E-01

-4.3575E-01

S12

-6.9296E-02

-1.5841E-03

5.3953E-02

-7.3573E-02

5.9968E-02

-3.3707E-02

1.3522E-02

TABLE 8-1

TABLE 8-2

The optical imaging lenses 310, 320, and 330 in examples 1, 2, and 3 of the third embodiment are different in the structural sizes of the lens barrel and the assembly member included therein. Tables 9-1 to 9-2 show some basic parameters of the lens barrels and the assembly members of the optical imaging lenses 310, 320, and 330 of the third embodiment, such as D1s, D1m, D2s, D2m, D2s, D3m, D3s, D3m, D4s, D4m, D4s, D5m, D5s, D0s, EP01, CP1, EP34, CP4, EP45, and CP5, etc., some of the basic parameters shown in tables 9-1 to 9-2 are measured according to the labeling method shown in fig. 1, and the units of the basic parameters shown in tables 9-1 to 9-2 are all millimeters (mm).

Examples/parameters	d1s	d1m	D1m	d2s	d2m	D2s	d3s	d3m	D3s	D3m	d4s	d4m
													3-1	2.325	2.325	5.397	2.388	2.251	5.790	2.947	2.810	5.999	5.999	3.805	3.669
3-2	2.315	2.315	5.397	2.405	2.268	5.790	2.979	2.842	5.999	5.999	3.832	3.696
													3-3	2.331	2.331	5.397	2.373	2.237	5.790	2.932	2.796	5.999	5.999	3.754	3.618

TABLE 9-1

Examples/parameters	D4m	d5s	d5m	D5s	d0s	EP01	CP1	EP34	CP4	EP45	CP5
												3-1	6.261	4.535	4.399	6.524	3.862	1.011	0.039	0.745	0.039	0.354	0.039
3-2	6.261	4.553	4.416	6.524	3.862	1.028	0.039	0.723	0.039	0.351	0.039
												3-3	6.261	4.535	4.399	6.524	3.862	1.002	0.039	0.739	0.039	0.367	0.039

TABLE 9-2

Fig. 13A shows on-axis chromatic aberration curves of the optical imaging lenses 310, 320, and 330 of the third embodiment, which represent the deviation of the convergent focal points of light rays of different wavelengths after passing through the optical imaging lenses 310, 320, and 330. Fig. 13B shows astigmatism curves of the optical imaging lenses 310, 320, and 330 of the third embodiment, which represent meridional field curvature and sagittal field curvature corresponding to different image heights. Fig. 13C shows distortion curves of the optical imaging lenses 310, 320, and 330 of the third embodiment, which represent distortion magnitude values corresponding to different image heights. As can be seen from fig. 13A to 13C, the optical imaging lenses 310, 320, and 330 according to the third embodiment can achieve good imaging quality.

In summary, the conditional expressions of each of the examples in the first to third embodiments satisfy the relationship shown in table 10.

Watch 10

The present application also provides an imaging device whose electron photosensitive element may be a photo-coupled device (CCD) or a complementary metal oxide semiconductor device (CMOS). The imaging apparatus may be a stand-alone imaging device such as a digital camera, or may be an imaging module integrated on a mobile electronic device such as a mobile phone. The imaging device is equipped with the optical imaging lens described above.

The foregoing description is only exemplary of the preferred embodiments of the application and is illustrative of the principles of the technology employed. It will be appreciated by those skilled in the art that the scope of the invention herein disclosed is not limited to the particular combination of features described above, but also encompasses other arrangements formed by any combination of features described above or equivalents thereof without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Claims (14)

1. An optical imaging lens, comprising:

the lens assembly 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 an object side to an image side along an optical axis, wherein the first lens has positive refractive power, the sixth lens has negative refractive power, and an image side surface of the sixth lens has at least one inflection point;

a plurality of assembling elements, at least including a first assembling element, a fourth assembling element and a fifth assembling element, wherein the first assembling element is disposed between the first lens and the second lens and abutted against the image side surface of the first lens, the fourth assembling element is disposed between the fourth lens and the fifth lens and abutted against the image side surface of the fourth lens, and the fifth assembling element is disposed between the fifth lens and the sixth lens and abutted against the image side surface of the fifth lens; and

a lens barrel in which the six-piece lens group and the plurality of assemblage elements are disposed,

wherein an effective focal length f1 of the first lens, an effective focal length f6 of the sixth lens, a maximum thickness CP1 of the first assemblage element, and a spacing EP45 of the fourth assemblage element and the fifth assemblage element along the optical axis satisfy: 1.5< | f1+ f6 |/(CP 1+ EP 45) <13.5.

2. The optical imaging lens of claim 1, wherein the plurality of assembly elements further comprises:

the second assembling element is arranged between the second lens and the third lens and is abutted against the image side surface of the second lens; and

the third vertical element is arranged between the third lens and the fourth lens and abuts against the image side surface of the third lens;

wherein, the optical imaging lens still satisfies: 2< (Dis + Dis)/EPD <5,i =2, 3, 4 or 5,

when i is 2, dis represents the inner diameter of the object side surface of the second assembly element, and Dis represents the outer diameter of the object side surface of the second assembly element; when i is 3, dis represents the inner diameter of the object side surface of the third three-dimensional element, and Dis represents the outer diameter of the object side surface of the third three-dimensional element; when i is 4, dis represents the inner diameter of the object side surface of the fourth discrete element, and Dis represents the outer diameter of the object side surface of the fourth discrete element; when i is 5, dis represents the inner diameter of the object side surface of the fifth assembly element, and Dis represents the outer diameter of the object side surface of the fifth assembly element; EPD is the entrance pupil diameter of the optical imaging lens.

3. The optical imaging lens of claim 2, wherein the total effective focal length f, the inner diameter djm of the image side surface of the assembly element abutting the image side surface of the lens with positive refractive power of the first lens element to the sixth lens element satisfy: 0.5 woven-of-f/djm <2.5, where j =1, 3, 4 or 5.

4. The optical imaging lens of claim 2, characterized in that the combined focal length f23 of the second and third lenses, the inner diameter d2s of the object side surface of the second stereo element and the inner diameter d2m of the image side surface of the second stereo element satisfy: 5< | f23 |/(d 2s + d2 m) <13.

5. The optical imaging lens according to claim 1, wherein the effective focal length f2 of the second lens, the radius of curvature R3 of the object-side surface of the second lens, the inner diameter D1m of the image-side surface of the first assembly element, and the outer diameter D1m of the image-side surface of the first assembly element satisfy: -6< (f 2 xR 3)/(D1 m xD 1 m) < -3.

6. The optical imaging lens according to claim 2, wherein the effective focal length f3 of the third lens, the effective focal length f4 of the fourth lens and the inner diameter d3s of the object side surface of the third three-dimensional element satisfy: 0.1< | f3+ f4|/d3s <8.1.

7. The optical imaging lens according to claim 2, wherein the radius of curvature R6 of the image-side surface of the third lens, the radius of curvature R7 of the object-side surface of the fourth lens, the inner diameter D3m of the image-side surface of the third three-dimensional element, and the outer diameter D3m of the image-side surface of the third three-dimensional element satisfy: 1< | R6+ R7 |/(D3 m + D3 m) <3.

8. The optical imaging lens according to claim 2, characterized in that the effective focal length f4 of the fourth lens, the effective focal length f5 of the fifth lens, the spacing EP34 of the third and fourth stereoscopic elements along the optical axis and the maximum thickness CP4 of the fourth stereoscopic element satisfy: 11< | f4-f5 |/(EP 34+ CP 4) <21.

9. The optical imaging lens of claim 1, wherein the radius of curvature R8 of the image side surface of the fourth lens, the radius of curvature R9 of the object side surface of the fifth lens, the inner diameter D4s of the object side surface of the fourth discrete element, and the outer diameter D4s of the object side surface of the fourth discrete element satisfy: 5< | R8+ R9 |/(D4 s + D4 s) <8.

10. The optical imaging lens according to claim 1, wherein the effective focal length f5 of the fifth lens, the radius of curvature R10 of the image-side surface of the fifth lens, the inner diameter d5s of the object-side surface of the fifth assembly element and the maximum thickness CP5 of the fifth assembly element satisfy: -117< (f 5 × R10)/(d 5s × CP 5) < -26.

11. The optical imaging lens of claim 1, wherein the inner diameter d1s of the object-side surface of the first assembly element, the inner diameter d5m of the image-side surface of the fifth assembly element and the entrance pupil diameter EPD of the optical imaging lens satisfy: 2< (d 1s + d5 m)/EPD <3.

12. The optical imaging lens of claim 1, wherein an overall effective focal length f of the optical imaging lens, an on-axis distance TD from an object side surface of the first lens to an image side surface of the sixth lens, an inner diameter d0s of an object side end surface of the lens barrel, and a distance EP01 between the object side end surface of the lens barrel and the first assembling element along the optical axis satisfy: 4< (f × TD)/(d 0s × EP 01) <9.

13. The optical imaging lens according to any one of claims 1 to 12, characterized in that at least one of the fourth to sixth lenses is meniscus shaped in the paraxial region.

14. The optical imaging lens according to any one of claims 1 to 12, wherein a curvature radius R1 of an object side surface of the first lens and a curvature radius R12 of an image side surface of the sixth lens satisfy: r1> R12>0.

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