CN219162465U

CN219162465U - Optical imaging lens

Info

Publication number: CN219162465U
Application number: CN202223561208.XU
Authority: CN
Inventors: 郑宗梁; 厉宏兰; 王超; 张芳; 戴付建; 赵烈烽
Original assignee: Zhejiang Sunny Optics Co Ltd
Current assignee: Zhejiang Sunny Optics Co Ltd
Priority date: 2022-12-30
Filing date: 2022-12-30
Publication date: 2023-06-09
Anticipated expiration: 2032-12-30

Abstract

The application discloses optical imaging lens, this optical imaging lens includes: the lens group comprises a first lens, a second lens, a third lens, a fourth lens and a fifth lens which are sequentially arranged from an object side to an image side along an optical axis, wherein the center thickness of the fourth lens in the lens group along the optical axis direction is the largest; the plurality of bearing elements comprise a first bearing element which is arranged on the image side of the first lens and is contacted with the image side of the first lens, and a fourth bearing element which is arranged on the image side of the fourth lens and is contacted with the image side of the fourth lens; and a lens barrel having an accommodation space accommodating the lens group and the plurality of bearing members; the maximum height L of the lens barrel along the optical axis direction, the center thickness CT4 of the fourth lens element on the optical axis, the center thickness CT5 of the fifth lens element on the optical axis, the outer diameter D4m of the image side surface of the fourth bearing element and the inner diameter D1m of the image side surface of the first bearing element satisfy the following conditions: 10< L/(CT4+CT5). Times.D4m/D1 m <25.

Description

Optical imaging lens

Technical Field

The present application relates to the field of optical elements, and in particular, to an optical imaging lens.

Background

Along with the rapid updating of the mobile phone lens, the requirements of people on mobile phone photographing are higher and higher, and the wide-angle lens is more and more applied to the mobile phone. However, as the field angle of the wide-angle lens is larger and the performance requirement is higher, the number of lenses is increased, and the volume of the lens is increased, which is in contradiction with the idea of pursuing miniaturization of the mobile phone. Therefore, a five-piece wide angle lens is also a mainstream choice for most cell phones.

At present, with the increase of image plane, the common five-lens wide-angle lens has an increase of the assembly level difference between the lenses, especially the assembly level difference between the fourth lens and the fifth lens. The larger the difference between the assembling steps of the fourth lens and the fifth lens is, the more easily the problems of assembling stability and flare are caused. In addition, when the difference in the assembly steps of the fourth lens and the fifth lens is within a reasonable range, the assembly stability is increased, and meanwhile, the weld mark of the fifth lens may also cause a parasitic light risk.

Disclosure of Invention

The present application provides such an optical imaging lens, the optical imaging lens includes: the lens group comprises a first lens, a second lens, a third lens, a fourth lens and a fifth lens which are sequentially arranged from an object side to an image side along an optical axis, wherein the center thickness of the fourth lens in the lens group along the optical axis direction is the largest; the plurality of bearing elements comprise a first bearing element which is arranged on the image side of the first lens and is contacted with the image side of the first lens, and a fourth bearing element which is arranged on the image side of the fourth lens and is contacted with the image side of the fourth lens; and a lens barrel having an accommodation space accommodating the lens group and the plurality of bearing members; the maximum height L of the lens barrel along the optical axis direction, the center thickness CT4 of the fourth lens element on the optical axis, the center thickness CT5 of the fifth lens element on the optical axis, the outer diameter D4m of the image side surface of the fourth bearing element and the inner diameter D1m of the image side surface of the first bearing element satisfy the following conditions: 10< L/(CT4+CT5). Times.D4m/D1 m <25.

In one embodiment, the plurality of bearing elements further comprises a third bearing element disposed on and in contact with the image side of the third lens; the distance EP34 between the image side surface of the third bearing element and the object side surface of the fourth bearing element along the optical axis direction, the on-axis distance T45 between the image side surface of the fourth lens element and the object side surface of the fifth lens element, the curvature radius R8 of the image side surface of the fourth lens element and the curvature radius R10 of the image side surface of the fifth lens element satisfy the following conditions: -35< (EP 34+ T45)/(r8 + R10) <0.

In one embodiment, the first lens has a negative optical power; the distance EP01 from the object end surface of the lens barrel to the object side surface of the first bearing element along the optical axis direction, the center thickness CT1 of the first lens on the optical axis, the on-axis distance T12 from the image side surface of the first lens to the object side surface of the second lens, and the effective focal length f1 of the first lens and the maximum height L of the lens barrel along the optical axis direction satisfy the following conditions: -3< EP 01/(CT1+T12). Times.f1/L <0.

In one embodiment, the effective focal length f4 of the fourth lens, the effective focal length f1 of the first lens, the inner diameter d4s of the object side surface of the fourth bearing element and the inner diameter d1s of the object side surface of the first bearing element satisfy: 2< (f 4-f 1)/(d 4s-d1 s) <5.

In one embodiment, the maximum thickness CP4 of the fourth bearing element in the optical axis direction, the distance EP34 between the image side surface of the third bearing element and the object side surface of the fourth bearing element in the optical axis direction, the central thickness CT4 of the fourth lens element on the optical axis, and the maximum field angle FOV of the optical imaging lens satisfy: 0< (CP4+EP 34)/CT 4 Xtan (FOV/2) <2.5.

In one embodiment, the outer diameter D0m of the image end surface of the lens barrel, the inner diameter D1s of the object side surface of the first bearing element, and the effective focal length f of the optical imaging lens satisfy: 1< (D0 m-D1 s)/f <4.

In one embodiment, the plurality of bearing elements further comprises a second bearing element disposed on and in contact with the image side of the second lens and a third bearing element disposed on and in contact with the image side of the third lens; the abbe number V1 of the first lens, the abbe number V2 of the second lens, the abbe number V3 of the third lens, the effective focal length f of the optical imaging lens, the maximum thickness CP3 of the third bearing element along the optical axis direction, and the distance EP23 between the image side surface of the second bearing element and the object side surface of the third bearing element along the optical axis direction satisfy: v1>2 XV 3 and 70< (V2-V3). Times.f/(CP3+EP 23) <180.

In one embodiment, an outer diameter D4s of the object side surface of the fourth bearing element, an inner diameter D3m of the image side surface of the third bearing element, a center thickness CT4 of the fourth lens element in the optical axis direction, an effective focal length f4 of the fourth lens element, and an effective focal length f of the optical lens element satisfy: 1< (D4 s-D3 m)/CT 4 xf 4/f <3.5.

In one embodiment, the effective focal length f of the optical imaging lens, the maximum thickness CP1 of the first bearing element in the optical axis direction, the maximum thickness CP2 of the second bearing element in the optical axis direction, the maximum thickness CP3 of the third bearing element in the optical axis direction, and the maximum thickness CP4 of the fourth bearing element in the optical axis direction satisfy: 3<f/(CP1+CP2+CP3+CP4) <26.

In one embodiment, the distance EP12 in the optical axis direction from the image side surface of the first bearing element to the object side surface of the second bearing element, the effective focal length f2 of the second lens, the radius of curvature R3 of the object side surface of the second lens, and the central thickness CT2 of the second lens on the optical axis satisfy: 1< EP12/f2×R3/CT2<2.5.

In one embodiment, the refractive index n3 of the third lens, the refractive index n1 of the first lens, the maximum height L of the lens barrel in the optical axis direction, and the on-axis distance Tr1r6 from the object side surface of the first lens to the image side surface of the third lens satisfy: 50< (n3+n1)/(n3-n 1). Times.L/Tr1r6 <60.

In one embodiment, the second lens and the fourth lens each have positive optical power, and the effective focal length f2 of the second lens is greater than the effective focal length of the fourth lens; the outer diameter D4m of the image side surface of the fourth bearing element, the outer diameter D2m of the image side surface of the second bearing element, the effective focal length f2 of the second lens and the effective focal length f4 of the fourth lens satisfy the following conditions: 0< (D4 m-D2 m)/(f 2-f 4) <5.

In one embodiment, the on-axis distance TD between the object side surface of the first lens element and the image side surface of the fifth lens element, the f-number Fno of the optical imaging lens, and the sum Σcp of the maximum thicknesses of each of the first bearing element to the fourth bearing element in the optical axis direction satisfy: 10< TD x FNo/ΣCPs <125.

The utility model provides a five-piece optical imaging lens, the center thickness of fourth lens along the optical axis direction is biggest, along with the increase of image surface, the group's poor difference of section of fourth lens and fifth lens is bigger, the problem of group stability appears more easily, in addition, the welding mark of fifth lens can cause the parasitic light risk, this application sets up the maximum height L of lens barrel along the optical axis direction, the center thickness CT4 of fourth lens on the optical axis, the center thickness CT5 of fifth lens on the optical axis, the external diameter D4m of the image side of fourth bearing element and the internal diameter D1m of the image side of first bearing element satisfy 10< L/(CT 4+CT5) ×D4m/d1m <25, in the front end position of optical imaging lens especially first bearing element department can intercept partial parasitic light, can guarantee simultaneously in the range of the group's difference of section of fourth lens and fifth lens that the thin ratio of thickness of guaranteeing fifth lens is at reasonable interval, be favorable to reducing the welding mark risk of fifth lens.

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, in which:

FIG. 1 is a schematic diagram showing a structural layout and some parameters of an optical imaging lens according to the present application;

fig. 2A to 2C show schematic structural views of an optical imaging lens according to embodiment 1 of the present application;

fig. 3A to 3C show an on-axis chromatic aberration curve, an astigmatic curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens according to embodiment 1 of the present application;

fig. 4A to 4C show schematic structural views of an optical imaging lens according to embodiment 2 of the present application;

fig. 5A to 5C show an on-axis chromatic aberration curve, an astigmatic curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens according to embodiment 2 of the present application;

fig. 6A to 6C show schematic structural views of an optical imaging lens according to embodiment 3 of the present application; and

fig. 7A to 7C show an on-axis chromatic aberration curve, an astigmatic curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens according to embodiment 3 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 these detailed description are merely illustrative of exemplary embodiments of the application and are not intended to limit the scope of the application in any way. Like reference numerals refer to like elements throughout the specification. The expression "and/or" includes any and all combinations of one or more of the associated listed items.

It should be noted that in the present specification, the expressions of first, second, third, etc. are only used to distinguish one feature from another feature, and do not represent any limitation on the feature. Accordingly, 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 spherical or aspherical shape shown in the drawings is shown by way of example. That is, the shape of the spherical or aspherical surface is not limited to the shape of the spherical or aspherical surface shown in the drawings. The figures are merely examples and are not drawn to scale.

In this context, curvature or paraxial curvature refers to the curvature of the region near the optical axis. If the curvature of the lens surface is positive and the position of the curvature is not defined, then the curvature of the lens surface at least in the paraxial region is positive; if the curvature of the lens surface is negative and the location of the curvature is not defined, it means that the curvature of the lens surface is negative at least in the paraxial region. The surface of each lens closest to the object is referred to as the object side of the lens, and the surface of each lens closest to the imaging surface is referred to as the image side of the lens.

It will be further understood that the terms "comprises," "comprising," "includes," "including," "having," "containing," 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 a statement such as "at least one of the following" appears after a list of features that are listed, the entire listed feature is modified instead of modifying a separate element in the list. Furthermore, when describing embodiments of the present application, use of "may" means "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, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The following examples merely represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the present application. It should be noted that, for those skilled in the art, several modifications and improvements may be made without departing from the concept of the present application, which are all within the scope of protection of the present application, for example, the lens groups (i.e. the first lens to the fifth lens) of the embodiments of the present application, the lens barrel and the bearing element may be arbitrarily combined, and the lens group of one embodiment is not limited to be combined with the lens barrel, the bearing element of the embodiment, and the like.

The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. Fig. 1 is a schematic diagram showing a structural layout and a part of parameters of an optical imaging lens according to the present application. It will be appreciated by those skilled in the art that some parameters commonly used in the art, such as the on-axis spacing T45 from the image side of the fourth lens to the object side of the fifth lens, are not shown in fig. 1, and fig. 1 illustrates only some of the parameters of the barrel and bearing element of one optical imaging lens of the present application for a better understanding of the present invention. As shown in fig. 1, EP01 represents a distance between an object end surface of the lens barrel and an object side surface of the first bearing element in the optical axis direction; l represents the maximum height of the lens barrel in the optical axis direction (i.e., the distance between the object end surface of the lens barrel near the object side and the image end surface of the lens barrel near the image side in the optical axis direction); CP4 represents the maximum thickness of the fourth bearing element in the optical axis direction; d0s represents the inner diameter of the object end face of the lens barrel; d0s represents the outer diameter of the object end face of the lens barrel; d0m represents the outer diameter of the image end face of the lens barrel; d0m represents the inner diameter of the image end face of the lens barrel; d4s represents the inner diameter of the object side surface of the fourth bearing element; d4s represents the outer diameter of the object side surface of the fourth bearing member; d4m represents the inner diameter of the image side surface of the fourth bearing member; d4m represents the outer diameter of the image side surface of the fourth bearing member.

The optical imaging lens according to the exemplary embodiment of the present application includes a lens group and a plurality of bearing elements, wherein the lens group includes, in order from an object side to an image side along an optical axis: the lens assembly comprises a first lens, a second lens, a third lens, a fourth lens and a fifth lens, wherein the center thickness of the fourth lens in the lens assembly along the optical axis direction is the largest, along with the increase of an image surface, the larger the assembly level difference between the fourth lens and the fifth lens is, the easier the problem of assembly stability is, in addition, the welding mark of the fifth lens possibly causes stray light risk, the maximum height L of a lens barrel along the optical axis direction is set, the center thickness CT4 of the fourth lens on the optical axis, the center thickness CT5 of the fifth lens on the optical axis is set, the outer diameter D4m of the image side surface of a fourth bearing element and the inner diameter D1m of the image side surface of the first bearing element are 10< L/(CT4+CT5). Times.D4m/d1m <25, the thickness ratio of the fifth lens is ensured within the assembly level difference range of the fourth lens and the fifth lens, the welding mark of the fifth lens is reduced, and meanwhile, the front end position of the first optical imaging lens especially the first bearing element can intercept part of stray light, and better imaging effect is achieved. In addition, the maximum height L of the lens barrel along the optical axis direction is restrained, and the requirement of miniaturization of the lens is ensured.

In an exemplary embodiment, the plurality of bearing elements may include a first bearing element disposed on and in contact with an image side of the first lens; the second bearing element is arranged on the image side of the second lens and is contacted with the image side of the second lens; the third bearing element is arranged on the image side of the third lens and is contacted with the image side of the third lens; the fourth bearing element is arranged on the image side of the fourth lens and is contacted with the image side of the fourth lens. By arranging at least one bearing element between every two adjacent lenses between the first lens and the fifth lens, the light flux can be ensured and the redundant stray light can be absorbed, so that high image quality can be obtained.

In an exemplary embodiment, the plurality of bearing elements further includes at least one of a third auxiliary bearing element disposed on and at least partially contacting an image side of the third bearing element and a fourth auxiliary bearing element disposed on and at least partially contacting an image side of the fourth bearing element. When a large step exists among the third lens, the fourth lens and the fifth lens and a large space exists among the third lens, a plurality of bearing elements are needed to be added among the lenses, and proper bearing positions can be selected for the lenses so as to improve the assembly stability and reduce the field curvature variation of the external field after high temperature and high humidity. In addition, the auxiliary bearing element can effectively block stray light caused by specular reflection in the bearing element positioned in front of the auxiliary bearing element, and meanwhile, prevent light from entering the next lens to generate inner stray light which cannot be improved.

It should be understood that the present application is not specifically limited to the number of bearing elements, any number of bearing elements may be included between any two lenses, and the entire optical imaging lens may also include any number of bearing elements. The bearing element is helpful for the optical imaging lens to intercept redundant refraction and reflection light paths and reduce the generation of stray light and ghost images. The auxiliary bearing is added between the bearing element and the lens barrel, so that the problems of poor assembly stability, low performance yield and the like caused by large step difference between lenses are solved.

In an exemplary embodiment, the optical imaging lens further includes a barrel for accommodating the lens group and the plurality of bearing members.

In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: -35< (EP 34+ T45)/(r8 + R10) <0, wherein EP34 is the distance along the optical axis between the image side of the third bearing element and the object side of the fourth bearing element, T45 is the on-axis spacing from the image side of the fourth lens to the object side of the fifth lens, R8 is the radius of curvature of the image side of the fourth lens, and R10 is the radius of curvature of the image side of the fifth lens. Satisfies-35 < (EP 34+T45)/(R8+R10) <0, and the distance EP34 between the image side surface of the third bearing element and the object side surface of the fourth bearing element along the optical axis direction is controlled within a reasonable range, so that the edge thickness of the fourth lens can be ensured within a certain range, and the injection molding of the fourth lens is facilitated. Meanwhile, the above conditional expression is satisfied, and the radius of curvature R8 of the image side of the fourth lens and the radius of curvature R10 of the image side of the fifth lens can be defined within a certain range, which is beneficial to avoiding the problems of lens surface type subs, surface type distortion and the like.

In an exemplary embodiment, the first lens of the optical imaging lens according to the present application has negative optical power, and the optical lens may satisfy: -3< EP 01/(CT 1+ T12) ×f1/L <0, where EP01 is the distance in the optical axis direction from the object end face of the lens barrel to the object side face of the first bearing element, CT1 is the center thickness of the first lens on the optical axis, T12 is the on-axis distance from the image side face of the first lens to the object side face of the second lens, f1 is the effective focal length of the first lens, and L is the maximum height of the lens barrel in the optical axis direction. The first lens has negative focal power, the effective focal length f1 of the first lens meets-3 < EP01/(CT 1+T12) multiplied by f1/L <0, larger angle of view of the lens is facilitated, meanwhile, when EP01 and CT1 meet the relational expression, the thickness ratio of the first lens can be ensured, uniformity in forming and filling is facilitated, internal stress of the lens is reduced, and imaging quality is further improved.

In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 2< (f 4-f 1)/(d 4s-d1 s) <5, wherein f4 is the effective focal length of the fourth lens, f1 is the effective focal length of the first lens, d4s is the inner diameter of the object side of the fourth bearing element, and d1s is the inner diameter of the object side of the first bearing element. Satisfies 2< (f 4-f 1)/(d 4s-d1 s) <5, and ensures that the difference value between the inner diameter d4s of the object side surface of the fourth bearing element and the inner diameter d1s of the object side surface of the first bearing element is within a certain range under the condition that the effective focal length f4 of the fourth lens and the effective focal length f1 of the first lens are unchanged, thereby controlling the annular belt widths of the first bearing element and the fourth bearing element, avoiding deformation of the bearing element caused by assembly, improving the assembly stability and improving the performance yield.

In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 0< (CP 4+ EP 34)/CT 4 x tan (FOV/2) <2.5, wherein CP4 is the maximum thickness of the fourth bearing element in the direction of the optical axis, EP34 is the distance between the image side surface of the third bearing element and the object side surface of the fourth bearing element in the direction of the optical axis, CT4 is the center thickness of the fourth lens on the optical axis, and FOV is the maximum field angle of the optical imaging lens. Satisfying 0< (CP 4+ EP 34)/CT 4 x tan (FOV/2) <2.5, being favorable to adjusting CP4 and CT4 in reasonable range under the unchangeable condition of FOV, let the fourth bear the weight of the component and be close to the thing side, be favorable to intercepting more parasitic light, let the camera lens have better imaging state. Meanwhile, the central thickness of the fourth lens can be controlled to be 0< (CP 4+EP 34)/CT 4 Xtan (FOV/2) <2.5, so that the total length of the lens barrel is reduced, the requirement of miniaturization of the lens barrel is met, and the requirement of lightening and thinning of the current image pickup device is met.

In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 1< (D0 m-D1 s)/f <4, wherein D0m is the outer diameter of the image end surface of the lens barrel, D1s is the inner diameter of the object side surface of the first bearing element, and f is the effective focal length of the optical imaging lens. Satisfying 1< (D0 m-D1 s)/f <4, being favorable to rationally setting the inner diameter D1s of the object side surface of the first bearing element under the condition that the effective focal length f of the optical lens is unchanged, the aperture of the lens can be increased, the light inlet quantity is increased, and the imaging picture of the lens is brighter and clearer. Meanwhile, the outer diameter D0m of the image side surface of the lens barrel can be reasonably set, so that the area of an imaging area can be increased, and more chips can be selected for matching the lens.

In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: v1>2 XV 3, and 70< (V2-V3) ×f/(CP3+EP 23) <180, where V1 is the Abbe number of the first lens, V2 is the Abbe number of the second lens, V3 is the Abbe number of the third lens, f is the effective focal length of the optical imaging lens, CP3 is the maximum thickness of the third bearing element in the optical axis direction, and EP23 is the distance between the image side surface of the second bearing element and the object side surface of the third bearing element in the optical axis direction. Satisfying V1>2 XV 3 and 70< (V2-V3) xf/(CP3+EP 23) <180, by reasonably setting the Abbe number of the lens, the chromatic dispersion of part of light can be counteracted, and the color distortion of lens imaging can be avoided. Under the condition that the Abbe number V2 of the second lens and the Abbe number V3 of the third lens are unchanged, increasing the EP23 can increase the strength of the third lens, and the third lens is prevented from deforming in the assembly process, so that poor performance is caused. In addition, the maximum thickness CP3 of the third bearing element along the optical axis direction is increased, so that the flatness of the third bearing element can be ensured, and the inclination caused in the assembly process can be reduced.

In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 1< (D4 s-D3 m)/CT 4 xf 4/f <3.5, wherein D4s is the outer diameter of the object side surface of the fourth bearing element, D3m is the inner diameter of the image side surface of the third bearing element, CT4 is the center thickness of the fourth lens in the optical axis direction, f4 is the effective focal length of the fourth lens, and f is the effective focal length of the optical imaging lens. The difference between the outer diameter D4s of the object side surface of the fourth bearing element and the inner diameter D3m of the image side surface of the third bearing element is within a certain range, the assembly step difference of the front lens and the rear lens of the fourth lens can be reduced, and the assembly stability is improved, wherein the difference is 1< (D4 s-D3 m)/CT 4 xf 4/f < 3.5. When the center thickness CT4 of the fourth lens meets the relation, the thickness of the fourth lens can be increased, so that the molding is facilitated, and welding marks are avoided in the injection molding process.

In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 3<f/(CP1+CP2+CP3+CP4) <26, wherein f is the effective focal length of the optical imaging lens, CP1 is the maximum thickness of the first bearing element in the optical axis direction, CP2 is the maximum thickness of the second bearing element in the optical axis direction, CP3 is the maximum thickness of the third bearing element in the optical axis direction, and CP4 is the maximum thickness of the fourth bearing element in the optical axis direction. The sum of the maximum thicknesses of the first bearing element and the fourth bearing element is within a certain range under the condition that the effective focal length f of the optical imaging lens is unchanged, 3<f/(CP1+CP2+CP3+CP4) <26, and the thickness of the bearing element and the thickness of the lens can be ensured at the same time, so that the flatness is ensured, and the assembly stability is ensured.

In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 1< EP12/f2×r3/CT2<2.5, where EP12 is a distance between the image side of the first bearing element and the object side of the second bearing element in the optical axis direction, f2 is an effective focal length of the second lens, R3 is a radius of curvature of the object side of the second lens, and CT2 is a center thickness of the second lens on the optical axis. Satisfies 1< EP12/f2×R3/CT2<2.5, and under the condition that the effective focal length f2 of the second lens is unchanged, the curvature radius R3 of the object side surface of the second lens is reasonably set, so that the bending degree of the second lens is ensured to be in a reasonable range, and the risk of surface type distortion is reduced. When EP12 and CT2 meet the above relation, the thickness ratio of the second lens is ensured, so that the filling in the molding process is more uniform.

In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 50< (n3+n1)/(n 3-n 1) ×L/Tr1r6<60, wherein n3 is the refractive index of the third lens, n1 is the refractive index of the first lens, L is the maximum height of the lens barrel in the optical axis direction, and Tr1r6 is the on-axis distance from the object side surface of the first lens to the image side surface of the third lens. When the refractive index n1 of the first lens and the refractive index n3 of the third lens are ensured to be 50< (n3+n1)/(n 3-n 1) multiplied by L/Tr1r6<60, the aberration and the chromatic aberration can be optimized conveniently. When the maximum height L of the lens barrel and the axial distance Tr1r6 from the object side surface of the first lens to the image side surface of the third lens meet the above relation, the ratio of the heights of the first three lenses to the total lens can be ensured, and the assembly decentration and the inclination of the first three lenses can be ensured.

In an exemplary embodiment, the second lens and the fourth lens both have positive focal power, and the effective focal length f2 of the second lens is larger than that of the fourth lens, which is beneficial to increasing the area of the imaging area, but at the same time, a certain step difference between the second lens and the fourth lens can cause poor assembly stability, further cause poor MTF curve dispersion, poor consistency and low MTF yield. In this case, the optical imaging lens according to the present application can satisfy: 0< (D4 m-D2 m)/(f 2-f 4) <5, wherein D4m is the outer diameter of the image side of the fourth bearing element, D2m is the outer diameter of the image side of the second bearing element, f2 is the effective focal length of the second lens, and f4 is the effective focal length of the fourth lens. Satisfies 0< (D4 m-D2 m)/(f 2-f 4) <5, is favorable for controlling the step difference from the second lens to the fourth lens, and is also favorable for improving the assembly stability of the second lens to the fourth lens, so that the dispersion and consistency of the MTF curve are improved, and the MTF performance yield is improved.

In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 10< TD×FNo/ΣCP <125, where TD is the on-axis distance from the object side surface of the first lens to the image side surface of the fifth lens, fno is the f-number of the optical imaging lens, ΣCP is the sum ΣCP of the maximum thicknesses of each of the first to fourth bearing elements in the optical axis direction. When TD meets the relation, TTL can be effectively controlled, and the miniaturization requirement is met. When the f-number Fno of the optical imaging lens satisfies the above relation, the light incoming amount can be increased, and the imaging quality can be further improved. When Σcp satisfies the above relation, the thickness of all the bearing elements is ensured, reducing the risk of assembly deformation of the bearing elements.

In an exemplary embodiment, the optical imaging lens may further include a filter for correcting color deviation and/or a protective glass for protecting a photosensitive element located on the imaging surface. The optical imaging lens according to the above embodiment of the present application may employ a plurality of lenses, for example, the above five lenses. Through reasonable distribution of focal power, surface shape, center thickness and on-axis spacing between lenses, incident light can be effectively converged, the total optical length of the imaging lens is reduced, and the processability of the imaging lens is improved, so that the optical imaging lens is more beneficial to production and processing.

In an embodiment of the present application, at least one of the mirrors of each lens is an aspherical mirror, i.e. at least one of the object side surface of the first lens to the image side surface of the fifth lens is an aspherical mirror. The aspherical lens is characterized in 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 center of the lens to the periphery of the lens, an aspherical lens has a better radius of curvature characteristic, and has advantages of improving distortion aberration and improving astigmatic aberration. By adopting the aspherical lens, aberration occurring at the time of imaging can be eliminated as much as possible, thereby improving imaging quality. Optionally, the object side and the image side of each of the first lens, the second lens, the third lens, the fourth lens and the fifth lens are aspherical mirrors.

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

Example 1

The optical imaging lens 1001, the optical imaging lens 1002, and the optical imaging lens 1003 according to embodiment 1 of the present application are described below with reference to fig. 2A to 3C. Fig. 2A to 2C show schematic structural diagrams of an optical imaging lens 1001, an optical imaging lens 1002, and an optical imaging lens 1003 according to embodiment 1 of the present application, respectively.

As shown in fig. 2A to 2C, the optical imaging lens 1001, the optical imaging lens 1002, and the optical imaging lens 1003 each include a lens barrel P0, lens groups E1 to E5, and a plurality of bearing members P1 to P4.

As shown in fig. 2A to 2C, the optical imaging lens 1001, the optical imaging lens 1002, and the optical imaging lens 1003 employ the same lens group, which includes, in order from the object side to the image side: a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, and a fifth lens E5. The first lens E1 has an object side surface S1 and an image side surface S2. The second lens E2 has an object side surface S3 and an image side surface S4. The third lens element E3 has an object side surface S5 and an image side surface S6. The fourth lens element E4 has an object side surface S7 and an image side surface S8. The fifth lens element E5 has an object side surface S9 and an image side surface S10. The filter (not shown) has an object side surface S11 (not shown) and an image side surface S12 (not shown), and light from an object sequentially passes through the respective surfaces S1 to S12 and is finally imaged on an imaging surface S13 (not shown).

Table 1 shows basic parameter tables of lens groups of the optical imaging lens 1001, the optical imaging lens 1002, and the optical imaging lens 1003 of embodiment 1, in which units of a radius of curvature, an effective focal length, and a thickness are millimeters (mm).

TABLE 1

In this example, f-numbers Fno of the optical imaging lens 1001, the optical imaging lens 1002, and the optical imaging lens 1003 are each 2.20, effective focal lengths f of the optical imaging lens 1001, the optical imaging lens 1002, and the optical imaging lens 1003 are each 2.02mm, and maximum field angles FOV of the optical imaging lens 1001, the optical imaging lens 1002, and the optical imaging lens 1003 are each 95.43 °.

In embodiment 1, the object side surface and the image side surface of the first lens E1 to the fifth lens E5 are aspheric, and the surface shape x of each aspheric lens can be defined by, but not limited to, the following aspheric formula:

wherein x is the distance vector height from the vertex of the aspheric surface when the aspheric surface is at the position with the height 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 conical systemA number; ai is the correction coefficient of the aspherical i-th order. Tables 2-1 and 2-2 show the higher order coefficients A that can be used for each of the aspherical mirror surfaces S1-S10 in example 1 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 。

TABLE 2-1

Face number

A18

A20

A22

A24

A26

A28

A30

S1

-9.4083E-05

-5.2206E-05

-3.4946E-05

-1.9163E-05

-1.3826E-05

-7.3007E-06

-4.7061E-06

S2

-2.5722E-05

1.9605E-07

-8.7115E-06

1.7055E-06

-4.5598E-06

1.6318E-07

-3.1822E-06

S3

2.2972E-06

2.2420E-07

-5.6145E-07

-1.0744E-06

-5.2128E-07

8.5152E-09

1.8451E-07

S4

-2.4998E-06

6.6177E-06

-3.6472E-06

2.0529E-06

-1.5583E-06

1.3859E-06

-1.4596E-06

S5

2.4867E-05

1.7327E-05

4.7560E-06

-5.0040E-06

3.9854E-07

-1.9444E-06

6.7057E-07

S6

2.0949E-06

1.0097E-05

-1.2027E-05

4.1101E-07

-4.1278E-07

1.6527E-06

-4.2866E-07

S7

-3.6768E-05

2.4416E-05

-8.2121E-06

8.9080E-06

-2.8942E-06

9.1639E-07

-7.0188E-07

S8

-1.0736E-05

1.2694E-04

4.8237E-05

2.7563E-05

-3.3766E-06

4.1785E-06

-7.7165E-06

S9

-2.0028E-05

3.4057E-05

2.8656E-06

-1.9836E-05

1.4323E-07

1.0465E-06

2.3115E-07

S10

-9.9414E-06

5.3937E-05

-5.9401E-05

3.4137E-05

-1.0175E-05

1.4988E-06

-8.6556E-08

TABLE 2-2

As shown in fig. 2A to 2C, the plurality of bearing elements of the optical imaging lens 1001, the optical imaging lens 1002, and the optical imaging lens 1003 each include a first bearing element P1, a second bearing element P2, a third bearing element P3, and a fourth bearing element P4, respectively. Wherein the first bearing element P1 is disposed between the first lens E1 and the second lens E2 and at least partially contacts the image side surface of the first lens E1; the second bearing element P2 is arranged between the second lens E2 and the third lens E3 and is at least partially contacted with the image side surface of the second lens E2; the third bearing element P3 is disposed between the third lens E3 and the fourth lens E4 and at least partially contacts the image side surface of the third lens E3; the fourth bearing element P4 is disposed between the fourth lens E4 and the fifth lens E5 and at least partially contacts the image side surface of the fourth lens E4. The plurality of bearing elements can block the entry of external redundant light, so that the lens and the lens barrel can bear better, and the structural stability of the optical imaging lens 1001, the optical imaging lens 1002 and the optical imaging lens 1003 is enhanced.

As shown in fig. 2C, the plurality of bearing elements of the optical imaging lens 1003 further includes a third auxiliary bearing element P3b disposed on the image side of the third bearing element P3 and at least partially contacting the image side of the third bearing element P3.

Table 3 shows basic parameters of the bearing elements of the optical imaging lens 1001, the optical imaging lens 1002, and the optical imaging lens 1003 and the lens barrel of embodiment 1, and each parameter in table 3 is in millimeters (mm).

/>

TABLE 3 Table 3

Fig. 3A shows on-axis chromatic aberration curves of the optical imaging lens 1001, the optical imaging lens 1002, and the optical imaging lens 1003 of embodiment 1, which represent the convergent focus deviation of light rays of different wavelengths after passing through the lenses. Fig. 3B shows astigmatism curves of the optical imaging lens 1001, the optical imaging lens 1002, and the optical imaging lens 1003 of embodiment 1, which represent meridional image plane curvature and sagittal image plane curvature. Fig. 3C shows a magnification chromatic aberration curve of the optical imaging lens 1001, the optical imaging lens 1002, and the optical imaging lens 1003 of embodiment 1, which represents a deviation of different image heights on an imaging plane after light passes through the lenses. As can be seen from fig. 3A to 3C, the optical imaging lens 1001, the optical imaging lens 1002, and the optical imaging lens 1003 given in embodiment 1 can achieve good imaging quality.

Example 2

The optical imaging lens 2001, the optical imaging lens 2002, and the optical imaging lens 2003 according to embodiment 2 of the present application are described below with reference to fig. 4A to 5C. In this embodiment and the following embodiments, descriptions of portions similar to embodiment 1 will be omitted for brevity. Fig. 4A to 4C show schematic structural diagrams of an optical imaging lens 2001, an optical imaging lens 2002, and an optical imaging lens 2003 according to embodiment 2 of the present application, respectively.

As shown in fig. 4A to 4C, the optical imaging lens 2001, the optical imaging lens 2002, and the optical imaging lens 2003 each include a lens barrel P0, lens groups E1 to E5, and a plurality of bearing members P1 to P4.

As shown in fig. 4A to 4C, the optical imaging lens 2001, the optical imaging lens 2002, and the optical imaging lens 2003 employ the same lens group including, in order from the object side to the image side: a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, and a fifth lens E5. The first lens E1 has an object side surface S1 and an image side surface S2. The second lens E2 has an object side surface S3 and an image side surface S4. The third lens element E3 has an object side surface S5 and an image side surface S6. The fourth lens element E4 has an object side surface S7 and an image side surface S8. The fifth lens element E5 has an object side surface S9 and an image side surface S10. The filter (not shown) has an object side surface S11 (not shown) and an image side surface S12 (not shown), and light from an object sequentially passes through the respective surfaces S1 to S12 and is finally imaged on an imaging surface S13 (not shown).

In this example, f numbers Fno of the optical imaging lens 2001, the optical imaging lens 2002, and the optical imaging lens 2003 are all 2.22, effective focal lengths f of the optical imaging lens 2001, the optical imaging lens 2002, and the optical imaging lens 2003 are all 2.58mm, and maximum field angles FOV of the optical imaging lens 2001, the optical imaging lens 2002, and the optical imaging lens 2003 are all 107.74 °.

Table 4 shows basic parameter tables of lens groups of the optical imaging lens 2001, the optical imaging lens 2002, and the optical imaging lens 2003 of embodiment 2, in which units of a radius of curvature, an effective focal length, and a thickness are all millimeters (mm). Tables 5-1 and 5-2 show the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 2, wherein each of the aspherical surface profiles can be defined by the formula (1) given in example 1 above.

TABLE 4 Table 4

Face number

A4

A6

A8

A10

A12

A14

A16

S1

1.4744E-01

-3.0122E-02

-1.0850E-03

-4.2729E-04

1.7734E-04

1.1193E-05

-1.3874E-05

S2

1.4659E-01

-5.4649E-03

5.0476E-04

-7.1325E-04

1.9056E-04

-1.0519E-04

7.3229E-05

S3

-4.1087E-03

-3.3476E-03

-7.8732E-04

-1.6390E-04

-3.2556E-05

1.6601E-06

1.0213E-05

S4

-1.0743E-01

-1.0760E-02

-3.7883E-03

-1.2276E-03

-2.6259E-04

-9.7278E-05

6.7168E-05

S5

-2.9631E-01

-5.8799E-03

4.9079E-03

3.7344E-03

1.2350E-03

6.8641E-04

-3.2526E-05

S6

-2.7486E-01

7.1560E-03

-4.9824E-04

-7.6638E-06

1.0913E-03

5.4806E-04

5.3534E-05

S7

6.8725E-02

1.8197E-02

-4.8466E-03

-5.3370E-03

2.4510E-03

-1.1729E-03

4.8469E-04

S8

2.6038E-01

-4.2567E-03

3.6547E-02

-1.9855E-03

-3.3575E-04

-1.9683E-03

-2.6733E-04

S9

-1.6634E+00

2.2203E-01

-2.3392E-02

3.1050E-02

-1.2394E-02

-3.3296E-04

-2.1833E-03

S10

-1.2348E+00

1.9994E-01

-6.3309E-02

3.4095E-02

-1.4856E-02

6.5116E-03

-4.8724E-03

TABLE 5-1

TABLE 5-2

As shown in fig. 4A to 4C, the plurality of bearing elements of the optical imaging lens 2001, the optical imaging lens 2002, and the optical imaging lens 2003 each include a first bearing element P1, a second bearing element P2, a third bearing element P3, and a fourth bearing element P4, respectively. Wherein the first bearing element P1 is disposed between the first lens E1 and the second lens E2 and at least partially contacts the image side surface of the first lens E1; the second bearing element P2 is arranged between the second lens E2 and the third lens E3 and is at least partially contacted with the image side surface of the second lens E2; the third bearing element P3 is disposed between the third lens E3 and the fourth lens E4 and at least partially contacts the image side surface of the third lens E3; the fourth bearing element P4 is disposed between the fourth lens E4 and the fifth lens E5 and at least partially contacts the image side surface of the fourth lens E4. The plurality of bearing elements can block the external superfluous light from entering, so that the lens and the lens barrel can bear better, and the structural stability of the optical imaging lens 2001, the optical imaging lens 2002 and the optical imaging lens 2003 is enhanced.

As shown in fig. 4C, the plurality of bearing elements of the optical imaging lens 2003 further includes a fourth auxiliary bearing element P4b disposed on the image side of the fourth bearing element P4 and at least partially contacting the image side of the fourth bearing element P4.

Table 6 shows basic parameters of the optical imaging lens 2001, the optical imaging lens 2002, and the bearing members of the optical imaging lens 2003 of embodiment 2, and a lens barrel, each of which has a unit of millimeter (mm) in table 6.

Example parameters	Optical imaging lens 2001	Optical imaging lens 2002	Optical imaging lens 2003
				d1s(mm)	1.26	1.23	1.33
d1m(mm)	1.26	1.23	1.33
				D2m(mm)	4.03	3.90	4.26
d3m(mm)	2.33	2.30	2.40
				d4s(mm)	3.36	3.34	3.44
D4s(mm)	5.23	5.15	5.37
				D4m(mm)	5.23	5.15	5.37
d0s(mm)	2.81	3.13	2.98
				d0m(mm)	5.62	5.55	5.78
D0s(mm)	4.82	4.55	5.90
				D0m(mm)	6.31	6.15	6.47
EP01(mm)	0.79	0.86	0.78
				CP1(mm)	0.02	0.05	0.02
EP12(mm)	0.52	0.58	0.56
				CP2(mm)	0.04	0.03	0.02
EP23(mm)	0.54	0.51	0.55
				CP3(mm)	0.02	0.03	0.02
EP34(mm)	0.89	0.88	0.37
				CP4(mm)	0.02	0.03	0.52
L(mm)	4.08	4.19	4.08
				CP3b(mm)	/	/	/
CP4b(mm)	/	/	0.02

TABLE 6

Fig. 5A shows on-axis chromatic aberration curves of the optical imaging lens 2001, the optical imaging lens 2002, and the optical imaging lens 2003 of embodiment 2, which represent the convergent focus deviation of light rays of different wavelengths after passing through the lenses. Fig. 5B shows astigmatism curves of the optical imaging lens 2001, the optical imaging lens 2002, and the optical imaging lens 2003 of embodiment 2, which represent meridional image plane curvature and sagittal image plane curvature. Fig. 5C shows magnification chromatic aberration curves of the optical imaging lens 2001, the optical imaging lens 2002, and the optical imaging lens 2003 of embodiment 2, which represent deviations of different image heights on an imaging plane after light passes through the lenses. As can be seen from fig. 5A to 5C, the optical imaging lens 2001, the optical imaging lens 2002, and the optical imaging lens 2003 given in embodiment 2 can achieve good imaging quality.

Example 3

The optical imaging lens 3001, the optical imaging lens 3002, and the optical imaging lens 3003 according to embodiment 3 of the present application are described below with reference to fig. 6A to 7C. Fig. 6A to 6C show schematic structural diagrams of an optical imaging lens 3001, an optical imaging lens 3002, and an optical imaging lens 3003 according to embodiment 3 of the present application, respectively.

As shown in fig. 6A to 6C, the optical imaging lens 3001, the optical imaging lens 3002, and the optical imaging lens 3003 each include a lens barrel P0, lens groups E1 to E5, and a plurality of bearing members P1 to P4.

As shown in fig. 6A to 6C, the optical imaging lens 3001, the optical imaging lens 3002, and the optical imaging lens 3003 employ the same lens group, and the lens group includes, in order from the object side to the image side: a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, and a fifth lens E5. The first lens E1 has an object side surface S1 and an image side surface S2. The second lens E2 has an object side surface S3 and an image side surface S4. The third lens element E3 has an object side surface S5 and an image side surface S6. The fourth lens element E4 has an object side surface S7 and an image side surface S8. The fifth lens element E5 has an object side surface S9 and an image side surface S10. The filter (not shown) has an object side surface S11 (not shown) and an image side surface S12 (not shown), and light from an object sequentially passes through the respective surfaces S1 to S12 and is finally imaged on an imaging surface S13 (not shown).

In this example, f-numbers Fno of the

optical imaging lenses

3001, 3002, and 3003 are each 2.27, effective focal lengths f of the

optical imaging lenses

3001, 3002, and 3003 are each 1.12mm, and maximum field angles FOV of the

optical imaging lenses

3001, 3002, and 3003 are each 134.09 °.

Table 7 shows basic parameter tables of lens groups of the optical imaging lens 3001, the optical imaging lens 3002, and the optical imaging lens 3003 of embodiment 3, in which units of a radius of curvature, an effective focal length, and a thickness are millimeters (mm). Tables 8-1 and 8-2 show the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 3, wherein each of the aspherical surface profiles can be defined by the formula (1) given in example 1 above.

TABLE 7

Face number

A4

A6

A8

A10

A12

A14

A16

S1

4.2976E-01

-2.0028E-02

1.1984E-02

-1.6770E-03

6.8473E-04

-2.2280E-04

3.1978E-05

S2

1.3227E-01

5.3923E-03

2.9716E-03

-2.2035E-04

-2.7062E-04

-2.1139E-04

-8.7966E-05

S3

-4.5644E-03

-3.3146E-04

-4.0823E-05

-5.6703E-07

-3.4552E-06

1.5956E-07

-8.1378E-07

S4

-3.3125E-02

9.0959E-03

-2.4848E-03

7.8843E-04

-1.2697E-04

6.2648E-05

-1.1071E-05

S5

-1.4263E-01

1.7434E-02

-6.7501E-03

1.5493E-03

-3.2080E-04

1.4889E-04

-2.3263E-05

S6

-1.6032E-01

2.3422E-02

-6.5399E-03

1.5340E-03

-3.8989E-04

9.7256E-05

-2.0056E-05

S7

4.2324E-02

-1.5257E-03

4.1046E-03

-1.6970E-03

3.0380E-04

-7.2137E-05

6.3776E-05

S8

3.0693E-01

-8.3064E-04

2.3459E-02

-4.4996E-04

1.5193E-04

-1.1205E-03

-1.6313E-04

S9

-1.6129E+00

2.6323E-01

-4.2640E-02

6.2138E-03

-2.7260E-03

7.2750E-04

-1.0137E-03

S10

-9.5135E-01

1.3191E-01

-3.5386E-02

5.4355E-03

-2.1817E-04

-2.0194E-03

4.0182E-04

TABLE 8-1

Face number

A18

A20

A22

A24

A26

A28

A30

S1

-2.6087E-05

1.0873E-05

0.0000E+00

S2

-1.1134E-05

1.4077E-05

1.1961E-05

-1.5745E-06

-6.1645E-07

0.0000E+00

S3

9.6143E-08

2.5142E-07

0.0000E+00

S4

8.7669E-06

8.1243E-06

0.0000E+00

S5

2.3448E-05

-1.0960E-06

3.4580E-06

-2.1609E-06

0.0000E+00

S6

1.0591E-06

4.5477E-07

0.0000E+00

S7

-3.5036E-05

5.8971E-06

0.0000E+00

S8

-8.0702E-07

4.9435E-05

0.0000E+00

S9

-9.0447E-05

-9.5382E-05

4.5497E-04

-2.6141E-05

-6.0333E-05

-1.6978E-05

1.1576E-05

S10

-1.5551E-03

6.8399E-04

0.0000E+00

TABLE 8-2

As shown in fig. 6A to 6C, the plurality of bearing elements of the optical imaging lens 3001, the optical imaging lens 3002, and the optical imaging lens 3003 each include a first bearing element P1, a second bearing element P2, a third bearing element P3, and a fourth bearing element P4, respectively. Wherein the first bearing element P1 is disposed between the first lens E1 and the second lens E2 and at least partially contacts the image side surface of the first lens E1; the second bearing element P2 is arranged between the second lens E2 and the third lens E3 and is at least partially contacted with the image side surface of the second lens E2; the third bearing element P3 is disposed between the third lens E3 and the fourth lens E4 and at least partially contacts the image side surface of the third lens E3; the fourth bearing element P4 is disposed between the fourth lens E4 and the fifth lens E5 and at least partially contacts the image side surface of the fourth lens E4. The plurality of bearing elements can block the entry of external superfluous light, so that the lens and the lens barrel can bear better, and the structural stability of the optical imaging lens 3001, the optical imaging lens 3002 and the optical imaging lens 3003 is enhanced.

As shown in fig. 6A and 6B, each of the plurality of bearing elements of the optical imaging lens 3001 and the optical imaging lens 3002 further includes a fourth auxiliary bearing element P4B disposed on the image side of the fourth bearing element P4 and at least partially contacting the image side of the fourth bearing element P4.

Table 9 shows basic parameters of the optical imaging lens 3001, the optical imaging lens 3002, and the bearing member of the optical imaging lens 3003 and the lens barrel of embodiment 3, and each parameter in units of millimeters (mm) in table 9.

Example parameters	Optical imaging mirror 3001	Optical imaging lens 3002	Optical imaging lens 3003
				d1s(mm)	0.60	0.75	0.69
d1m(mm)	0.60	0.75	0.69
				D2m(mm)	3.73	3.78	2.87
d3m(mm)	1.57	1.51	1.63
				d4s(mm)	2.68	2.68	2.50
D4s(mm)	3.79	3.68	4.34
				D4m(mm)	4.06	3.94	4.34
d0s(mm)	4.01	3.65	4.16
				d0m(mm)	4.48	4.37	4.57
D0s(mm)	4.62	4.37	5.16
				D0m(mm)	5.00	4.88	5.09
EP01(mm)	0.89	0.87	0.96
				CP1(mm)	0.02	0.03	0.02
EP12(mm)	0.39	0.39	0.38
				CP2(mm)	0.02	0.03	0.02
EP23(mm)	0.40	0.38	0.39
				CP3(mm)	0.02	0.03	0.02
EP34(mm)	0.38	0.38	0.61
				CP4(mm)	0.02	0.22	0.02
L(mm)	3.08	3.07	3.15
				CP3b(mm)	/	/	/
CP4b(mm)	0.02	0.03	/

TABLE 9

Fig. 7A shows on-axis chromatic aberration curves of the optical imaging lens 3001, the optical imaging lens 3002, and the optical imaging lens 3003 of embodiment 3, which represent the deviation of the converging focus of light rays of different wavelengths after passing through the lenses. Fig. 7B shows astigmatism curves of the optical imaging lens 3001, the optical imaging lens 3002, and the optical imaging lens 3003 of embodiment 3, which represent meridional image plane curvature and sagittal image plane curvature. Fig. 7C shows a magnification chromatic aberration curve of the optical imaging lens 3001, the optical imaging lens 3002, and the optical imaging lens 3003 of embodiment 3, which represents a deviation of different image heights on an imaging plane after light passes through the lens. As can be seen from fig. 7A to 7C, the optical imaging lens 3001, the optical imaging lens 3002, and the optical imaging lens 3003 given in embodiment 3 can achieve good imaging quality.

In summary, the

optical imaging lenses

1001, 1002, 1003, 2001, 2002, 2003, 3001, 3002, and 3003 of embodiment 1 to embodiment 3 satisfy the relationship shown in table 10.

Conditional\optical imaging lens	1001	1002	1003	2001	2002	2003	3001	3002	3003
										(D4m-D2m)/\|f4-f2\|	1.52	0.71	1.49	1.34	1.39	1.24	1.02	0.50	4.56
(EP34+T45)/(R8+R10)	-3.73	-3.10	-3.06	-31.34	-31.04	-15.56	-2.32	-2.32	-3.65
										EP01/(CT1+T12)×f1/L	-0.68	-0.72	-0.73	-2.32	-2.46	-2.29	-1.26	-1.24	-1.33
(f4-f1)/(d4s-d1s)	3.36	3.21	3.16	4.79	4.76	4.76	2.02	2.18	2.32
										(CP4+EP34)/CT4×tan(FOV/2)	0.81	1.00	0.66	1.44	1.44	1.41	1.29	1.94	2.03
(D0m-d1s)/f	2.33	2.42	2.32	1.96	1.91	2.00	3.91	3.67	3.91
										(V2-V3)×f/(CP3+EP23)	88.17	88.17	74.81	168.87	175.12	165.90	95.47	97.80	97.80
(D4s-d3m)/CT4×f4/f	1.69	1.22	1.10	2.57	2.53	2.63	2.75	2.69	3.36
										f/(CP1+CP2+CP3+CP4)	25.21	4.29	3.54	25.75	18.40	4.44	14.06	3.63	14.06
EP12/f2×R3/CT2	1.56	1.49	1.49	1.65	1.84	1.78	2.02	2.02	1.97
										(n3+n1)/(n3-n1)×L/Tr1r6	55.48	56.48	56.48	57.41	58.96	57.41	55.61	55.43	56.88
L/(CT4+CT5)×D4m/d1m	11.82	11.11	11.86	13.51	13.99	13.14	22.12	17.12	21.03
										TD×Fno/∑CP	123.95	21.10	16.81	79.36	56.68	13.23	57.63	16.95	72.04

Table 10

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

The foregoing description is only of the preferred embodiments of the present application and is presented as a description of the principles of the technology being utilized. It will be appreciated by persons skilled in the art that the scope of the invention referred to in this application is not limited to the specific combinations of features described above, but also covers other technical solutions which may be formed by any combination of the features described above or their equivalents without departing from the inventive concept. Such as the above-described features and technical features having similar functions (but not limited to) disclosed in the present application are replaced with each other.

Claims

1. An optical imaging lens, comprising:

the lens group comprises a first lens, a second lens, a third lens, a fourth lens and a fifth lens which are sequentially arranged from an object side to an image side along an optical axis, wherein the center thickness of the fourth lens in the lens group along the optical axis direction is the largest;

a plurality of bearing elements including a first bearing element disposed on and in contact with an image side of the first lens and a fourth bearing element disposed on and in contact with an image side of the fourth lens; and

a lens barrel having an accommodation space accommodating the lens group and the plurality of bearing members;

the maximum height L of the lens barrel along the optical axis direction, the center thickness CT4 of the fourth lens element on the optical axis, the center thickness CT5 of the fifth lens element on the optical axis, the outer diameter D4m of the image side surface of the fourth bearing element, and the inner diameter D1m of the image side surface of the first bearing element satisfy: 10< L/(CT4+CT5). Times.D4m/D1 m <25.

2. The optical imaging lens of claim 1, wherein the plurality of bearing elements further comprises a third bearing element disposed on and in contact with an image side of the third lens; and

The distance EP34 between the image side surface of the third bearing element and the object side surface of the fourth bearing element along the optical axis direction, the on-axis distance T45 between the image side surface of the fourth lens element and the object side surface of the fifth lens element, and the curvature radius R8 of the image side surface of the fourth lens element and the curvature radius R10 of the image side surface of the fifth lens element satisfy the following conditions:

-35<(EP34+T45)/(R8+R10)<0。

3. the optical imaging lens as claimed in claim 1, wherein,

the first lens has negative optical power; and

the distance EP01 from the object end surface of the lens barrel to the object side surface of the first bearing element along the optical axis direction, the central thickness CT1 of the first lens on the optical axis, the axial distance T12 from the image side surface of the first lens to the object side surface of the second lens, and the effective focal length f1 of the first lens and the maximum height L of the lens barrel along the optical axis direction satisfy: -3< EP 01/(CT1+T12). Times.f1/L <0.

4. The optical imaging lens as claimed in claim 1, wherein an effective focal length f4 of the fourth lens element, an effective focal length f1 of the first lens element, an inner diameter d4s of an object side surface of the fourth bearing element, and an inner diameter d1s of the object side surface of the first bearing element satisfy: 2< (f 4-f 1)/(d 4s-d1 s) <5.

5. The optical imaging lens as claimed in claim 2, wherein,

the maximum thickness CP4 of the fourth bearing element along the optical axis direction, the distance EP34 between the image side surface of the third bearing element and the object side surface of the fourth bearing element along the optical axis direction, the central thickness CT4 of the fourth lens on the optical axis, and the maximum field angle FOV of the optical imaging lens satisfy:

0<(CP4+EP34)/CT4×tan(FOV/2)<2.5。

6. the optical imaging lens according to claim 1, wherein an outer diameter D0m of an image end surface of the lens barrel, an inner diameter D1s of an object side surface of the first bearing member, and an effective focal length f of the optical imaging lens satisfy: 1< (D0 m-D1 s)/f <4.

7. The optical imaging lens of claim 1, wherein the plurality of bearing elements further comprises a second bearing element disposed on and in contact with an image side of the second lens and a third bearing element disposed on and in contact with an image side of the third lens; wherein,,

the abbe number V1 of the first lens, the abbe number V2 of the second lens, the abbe number V3 of the third lens, the effective focal length f of the optical imaging lens, the maximum thickness CP3 of the third bearing element along the optical axis direction, and the distance EP23 between the image side surface of the second bearing element and the object side surface of the third bearing element along the optical axis direction satisfy: v1>2 XV 3 and 70< (V2-V3). Times.f/(CP3+EP 23) <180.

8. The optical imaging lens as claimed in claim 2, wherein an outer diameter D4s of the object side surface of the fourth bearing element, an inner diameter D3m of the image side surface of the third bearing element, a center thickness CT4 of the fourth lens element in the optical axis direction, an effective focal length f4 of the fourth lens element, and an effective focal length f of the optical imaging lens satisfy: 1< (D4 s-D3 m)/CT 4 xf 4/f <3.5.

9. The optical imaging lens according to claim 7, wherein an effective focal length f of the optical imaging lens, a maximum thickness CP1 of the first bearing member in the optical axis direction, a maximum thickness CP2 of the second bearing member in the optical axis direction, a maximum thickness CP3 of the third bearing member in the optical axis direction, and a maximum thickness CP4 of the fourth bearing member in the optical axis direction satisfy: 3<f/(CP1+CP2+CP3+CP4) <26.

10. The optical imaging lens as claimed in claim 7, wherein a distance EP12 in the optical axis direction from an image side surface of the first bearing member to an object side surface of the second bearing member, an effective focal length f2 of the second lens, a radius of curvature R3 of the object side surface of the second lens, and a center thickness CT2 of the second lens on the optical axis satisfy: 1< EP12/f2×R3/CT2<2.5.

11. The optical imaging lens according to any one of claims 1 to 10, wherein a refractive index n3 of the third lens, a refractive index n1 of the first lens, a maximum height L of the lens barrel in the optical axis direction, and an on-axis distance Tr1r6 from an object side surface of the first lens to an image side surface of the third lens satisfy: 50< (n3+n1)/(n3-n 1). Times.L/Tr1r6 <60.

12. The optical imaging lens of claim 7, wherein the second lens and the fourth lens each have positive optical power, and an effective focal length f2 of the second lens is greater than an effective focal length of the fourth lens; and

the outer diameter D4m of the image side surface of the fourth bearing element, the outer diameter D2m of the image side surface of the second bearing element, the effective focal length f2 of the second lens and the effective focal length f4 of the fourth lens satisfy: 0< (D4 m-D2 m)/(f 2-f 4) <5.

13. The optical imaging lens as claimed in claim 7, wherein an on-axis distance TD from an object side surface of the first lens to an image side surface of the fifth lens, an f-number Fno of the optical imaging lens, and a sum Σcp of maximum thicknesses of each of the first to fourth bearing elements in an optical axis direction satisfy: 10< TD x FNo/ΣCPs <125.