CN108254880B

CN108254880B - Optical imaging lens

Info

Publication number: CN108254880B
Application number: CN201810143040.XA
Authority: CN
Inventors: 张凯元; 李明; 宋博; 徐标
Original assignee: Zhejiang Sunny Optics Co Ltd
Current assignee: Zhejiang Sunny Optics Co Ltd
Priority date: 2018-02-11
Filing date: 2018-02-11
Publication date: 2023-06-16
Anticipated expiration: 2038-02-11
Also published as: CN108254880A

Abstract

The application discloses optical imaging lens, this optical imaging lens includes in order from the object side to the image side along the optical axis: a first lens, a second lens, a third lens, a fourth lens and a fifth lens. The first lens has negative focal power, the object side surface of the first lens is a convex surface, and the image side surface of the first lens is a concave surface; the second lens has positive focal power, and the object side surface of the second lens is a convex surface; the third lens has optical power, the object side surface of the third lens is concave, and the image side surface of the third lens is convex; the fourth lens has optical power; the fifth lens has negative focal power, the object side surface of the fifth lens is a convex surface, and the image side surface of the fifth lens is a concave surface. The central thickness CT1 of the first lens on the optical axis and the central thickness CT5 of the fifth lens on the optical axis are more than or equal to 3.5 and less than or equal to CT5/CT1 and less than or equal to 5.

Description

Optical imaging lens

Technical Field

The present application relates to an optical imaging lens, and more particularly, to an optical imaging lens including five lenses.

Background

Today, social network development is rapid, and shooting functions of mobile phones are more and more valued by consumers, and every person has the actual requirement of picking up the mobile phone to record the wonderful moment, so that the mobile phone lens has higher requirements on various performances. For the front camera of the mobile phone, the size and the depth of the front opening determine the size and the aesthetic degree of the opening on the screen of the mobile phone. In order to adapt to the trend of increasing the duty ratio of a mobile phone screen of a terminal, the patent researches and provides a scheme that the front three front cameras can be small. In addition, the proper total length of the mobile phone lens can be widely applied to modern ultrathin lenses.

The invention provides a five-piece ultrathin aspheric imaging lens group with high screen occupation ratio.

Disclosure of Invention

The present application provides an optical imaging lens applicable to portable electronic products that at least solves or partially solves at least one of the above-mentioned drawbacks of the prior art.

In one aspect, the present application provides an optical imaging lens, including, in order from an object side to an image side along an optical axis: a first lens, a second lens, a third lens, a fourth lens and a fifth lens. The first lens element may have negative refractive power, wherein an object-side surface thereof may be convex, and an image-side surface thereof may be concave; the second lens may have positive optical power, and an object side surface thereof may be convex; the third lens has positive focal power or negative focal power, the object side surface of the third lens can be concave, and the image side surface of the third lens can be convex; the fourth lens has positive focal power or negative focal power; the fifth lens element may have negative refractive power, wherein the object-side surface thereof may be convex and the image-side surface thereof may be concave. The center thickness CT1 of the first lens on the optical axis and the center thickness CT5 of the fifth lens on the optical axis can meet the requirement that CT5/CT1 is smaller than or equal to 3.5 and smaller than or equal to 5.

In one embodiment, the effective half-caliber DT11 of the object side of the first lens, the effective half-caliber DT22 of the image side of the second lens and the effective half-caliber DT32 of the image side of the third lens may satisfy 1.5 < DT22/DT11+DT32/DT11 < 2.

In one embodiment, the radius of curvature R1 of the object-side surface of the first lens and the radius of curvature R2 of the image-side surface of the first lens may satisfy 9.ltoreq.R1+R2)/(R1-R2) < 10.

In one embodiment, the radius of curvature R3 of the object side surface of the second lens, the radius of curvature R4 of the image side surface of the second lens, the radius of curvature R9 of the object side surface of the fifth lens, and the radius of curvature R10 of the image side surface of the fifth lens may satisfy 3 < | (r3+r4)/(r9+r10) | < 7.

In one embodiment, the total effective focal length f of the optical imaging lens, the radius of curvature R5 of the object side of the third lens and the radius of curvature R6 of the image side of the third lens may satisfy-1 < f/R5-f/R6 < 1.

In one embodiment, the effective focal length f4 of the fourth lens and the radius of curvature R8 of the image side of the fourth lens may satisfy |f4/R8| < 5.

In one embodiment, the effective focal length f1 of the first lens, the effective focal length f2 of the second lens, the effective focal length f5 of the fifth lens, and the total effective focal length f of the optical imaging lens may satisfy 6.5 < |f1/f|+|f2/f|+|f5/f| < 9.

In one embodiment, the combined focal length f34 of the third lens and the fourth lens and the combined focal length f12 of the first lens and the second lens may satisfy 6.5 < |f34/f12| < 10.5.

In one embodiment, the maximum effective half-caliber DT41 of the object side of the fourth lens and the maximum effective half-caliber DT31 of the object side of the third lens may satisfy 1 < DT41/DT31 < 1.5.

In one embodiment, a distance between a center of the object side surface of the first lens and an imaging surface of the optical imaging lens on the optical axis, TTL, and a half of a diagonal length of an effective pixel area on the imaging surface of the optical imaging lens, imgH, may satisfy TTL/ImgH is less than or equal to 1.5.

In one embodiment, the sum Σat of the spacing distances on the optical axis of any adjacent two lenses of the first lens to the fifth lens, the spacing distance T12 on the optical axis of the first lens and the second lens, and the spacing distance T34 on the optical axis of the third lens and the fourth lens may satisfy 6 < Σat/(t12+t34) < 9.5.

In another aspect, the present application provides an optical imaging lens comprising, in order from an object side to an image side along an optical axis: a first lens, a second lens, a third lens, a fourth lens and a fifth lens. The first lens element may have negative refractive power, wherein an object-side surface thereof may be convex, and an image-side surface thereof may be concave; the second lens may have positive optical power, and an object side surface thereof may be convex; the third lens has positive focal power or negative focal power, the object side surface of the third lens can be concave, and the image side surface of the third lens can be convex; the fourth lens has positive focal power or negative focal power; the fifth lens element may have negative refractive power, wherein the object-side surface thereof may be convex and the image-side surface thereof may be concave. The combined focal length f34 of the third lens and the fourth lens and the combined focal length f12 of the first lens and the second lens can meet the requirement that 6.5 < |f34/f12| < 10.5.

In still another aspect, the present application further provides an optical imaging lens, including, in order from an object side to an image side along an optical axis: a first lens, a second lens, a third lens, a fourth lens and a fifth lens. The first lens element may have negative refractive power, wherein an object-side surface thereof may be convex, and an image-side surface thereof may be concave; the second lens may have positive optical power, and an object side surface thereof may be convex; the third lens has positive focal power or negative focal power, the object side surface of the third lens can be concave, and the image side surface of the third lens can be convex; the fourth lens has positive focal power or negative focal power; the fifth lens element may have negative refractive power, wherein the object-side surface thereof may be convex and the image-side surface thereof may be concave. The distance between the center of the object side surface of the first lens and the imaging surface of the optical imaging lens on the optical axis TTL and half of the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens ImgH can meet the requirement that TTL/ImgH is less than or equal to 1.5.

In still another aspect, the present application further provides an optical imaging lens, including, in order from an object side to an image side along an optical axis: a first lens, a second lens, a third lens, a fourth lens and a fifth lens. The first lens element may have negative refractive power, wherein an object-side surface thereof may be convex, and an image-side surface thereof may be concave; the second lens may have positive optical power, and an object side surface thereof may be convex; the third lens has positive focal power or negative focal power, the object side surface of the third lens can be concave, and the image side surface of the third lens can be convex; the fourth lens has positive focal power or negative focal power; the fifth lens element may have negative refractive power, wherein the object-side surface thereof may be convex and the image-side surface thereof may be concave. The maximum effective half-caliber DT41 of the object side surface of the fourth lens and the maximum effective half-caliber DT31 of the object side surface of the third lens can satisfy the conditions of 1 < DT41/DT31 < 1.5.

In still another aspect, the present application further provides an optical imaging lens, including, in order from an object side to an image side along an optical axis: a first lens, a second lens, a third lens, a fourth lens and a fifth lens. The first lens element may have negative refractive power, wherein an object-side surface thereof may be convex, and an image-side surface thereof may be concave; the second lens may have positive optical power, and an object side surface thereof may be convex; the third lens has positive focal power or negative focal power, the object side surface of the third lens can be concave, and the image side surface of the third lens can be convex; the fourth lens has positive focal power or negative focal power; the fifth lens element may have negative refractive power, wherein the object-side surface thereof may be convex and the image-side surface thereof may be concave. Wherein, the curvature radius R1 of the object side surface of the first lens and the curvature radius R2 of the image side surface of the first lens can satisfy that (R1+R2)/(R1-R2) < 10.

In still another aspect, the present application further provides an optical imaging lens, including, in order from an object side to an image side along an optical axis: a first lens, a second lens, a third lens, a fourth lens and a fifth lens. The first lens element may have negative refractive power, wherein an object-side surface thereof may be convex, and an image-side surface thereof may be concave; the second lens may have positive optical power, and an object side surface thereof may be convex; the third lens has positive focal power or negative focal power, the object side surface of the third lens can be concave, and the image side surface of the third lens can be convex; the fourth lens has positive focal power or negative focal power; the fifth lens element may have negative refractive power, wherein the object-side surface thereof may be convex and the image-side surface thereof may be concave. The effective focal length f1 of the first lens, the effective focal length f2 of the second lens, the effective focal length f5 of the fifth lens and the total effective focal length f of the optical imaging lens can satisfy 6.5 < |f1/f|+|f2/f|+|f5/f| < 9.

In still another aspect, the present application further provides an optical imaging lens, including, in order from an object side to an image side along an optical axis: a first lens, a second lens, a third lens, a fourth lens and a fifth lens. The first lens element may have negative refractive power, wherein an object-side surface thereof may be convex, and an image-side surface thereof may be concave; the second lens may have positive optical power, and an object side surface thereof may be convex; the third lens has positive focal power or negative focal power, the object side surface of the third lens can be concave, and the image side surface of the third lens can be convex; the fourth lens has positive focal power or negative focal power; the fifth lens element may have negative refractive power, wherein the object-side surface thereof may be convex and the image-side surface thereof may be concave. The radius of curvature R3 of the object-side surface of the second lens element, the radius of curvature R4 of the image-side surface of the second lens element, the radius of curvature R9 of the object-side surface of the fifth lens element, and the radius of curvature R10 of the image-side surface of the fifth lens element may satisfy 3 < | (r3+r4)/(r9+r10) | < 7.

In still another aspect, the present application further provides an optical imaging lens, including, in order from an object side to an image side along an optical axis: a first lens, a second lens, a third lens, a fourth lens and a fifth lens. The first lens element may have negative refractive power, wherein an object-side surface thereof may be convex, and an image-side surface thereof may be concave; the second lens may have positive optical power, and an object side surface thereof may be convex; the third lens has positive focal power or negative focal power, the object side surface of the third lens can be concave, and the image side surface of the third lens can be convex; the fourth lens has positive focal power or negative focal power; the fifth lens element may have negative refractive power, wherein the object-side surface thereof may be convex and the image-side surface thereof may be concave. The sum ΣAT of the spacing distances of any two adjacent lenses from the first lens to the fifth lens on the optical axis, the spacing distance T12 of the first lens and the second lens on the optical axis and the spacing distance T34 of the third lens and the fourth lens on the optical axis can meet the condition that 6 < ΣAT/(T12+T34) < 9.5.

In still another aspect, the present application further provides an optical imaging lens, including, in order from an object side to an image side along an optical axis: a first lens, a second lens, a third lens, a fourth lens and a fifth lens. The first lens element may have negative refractive power, wherein an object-side surface thereof may be convex, and an image-side surface thereof may be concave; the second lens may have positive optical power, and an object side surface thereof may be convex; the third lens has positive focal power or negative focal power, the object side surface of the third lens can be concave, and the image side surface of the third lens can be convex; the fourth lens has positive focal power or negative focal power; the fifth lens element may have negative refractive power, wherein the object-side surface thereof may be convex and the image-side surface thereof may be concave. The effective half-caliber DT11 of the object side surface of the first lens, the effective half-caliber DT22 of the image side surface of the second lens and the effective half-caliber DT32 of the image side surface of the third lens can satisfy 1.5 < DT22/DT11+DT32/DT11 < 2.

The imaging system has the advantage of large aperture by reasonably distributing the focal power, the surface thickness, the center thickness and the axial spacing between the lenses of the lenses, so that the imaging effect of the optical imaging lens is enhanced. Meanwhile, the optical imaging lens configured as described above can have at least one advantageous effect of ultra-thin, miniaturization, high resolution, and the like.

Drawings

Other features, objects and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments, taken in conjunction with the accompanying drawings. In the drawings:

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

fig. 2A to 2D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 1;

fig. 3 shows a schematic structural view of an optical imaging lens according to embodiment 2 of the present application;

fig. 4A to 4D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 2;

fig. 5 shows a schematic structural view of an optical imaging lens according to embodiment 3 of the present application;

fig. 6A to 6D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 3;

fig. 7 shows a schematic structural diagram of an optical imaging lens according to embodiment 4 of the present application;

fig. 8A to 8D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 4;

Fig. 9 shows a schematic structural view of an optical imaging lens according to embodiment 5 of the present application;

fig. 10A to 10D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 5;

fig. 11 shows a schematic structural view of an optical imaging lens according to embodiment 6 of the present application;

fig. 12A to 12D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 6.

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.

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, then 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 is referred to as the object side surface, and the surface of each lens closest to the imaging surface is referred to as the image side surface.

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 present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

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, for example, five lenses having optical power, i.e., a first lens, a second lens, a third lens, a fourth lens, and a fifth lens. The five lenses are sequentially arranged from the object side to the image side along the optical axis.

In an exemplary embodiment, the first lens may have negative optical power, an object-side surface thereof may be convex, and an image-side surface thereof may be concave; the second lens may have positive optical power, and an object side surface thereof may be convex; the third lens has positive focal power or negative focal power, the object side surface of the third lens can be concave, and the image side surface of the third lens can be convex; the fourth lens has positive focal power or negative focal power; the fifth lens element may have negative refractive power, wherein the object-side surface thereof may be convex and the image-side surface thereof may be concave.

In an exemplary embodiment, the image side of the fourth lens may be convex.

In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 3.5+.CT5/CT1+.5, where CT5 is the center thickness of the fifth lens element on the optical axis and CT1 is the center thickness of the first lens element on the optical axis. More specifically, CT5 and CT1 may further satisfy 3.51.ltoreq.CT5/CT 1.ltoreq.4.58. By reasonably distributing the focal power, the center thickness and the clear aperture of each lens, the high-resolution imaging characteristic of the optical imaging lens is convenient to realize.

In an exemplary embodiment, the optical imaging lens of the present application may satisfy the condition of 1.5 < DT22/DT11+dt32/DT11 < 2, where DT22 is an effective half-caliber of the image side surface of the second lens element, DT11 is an effective half-caliber of the object side surface of the first lens element, and DT32 is an effective half-caliber of the image side surface of the third lens element. More specifically, DT22, DT11, and DT32 may further satisfy 1.61.ltoreq.DT 22/DT11+DT32/DT 11.ltoreq.1.91. The ratio of the effective half caliber of the second lens image side surface to the effective half caliber of the first lens object side surface and the sum of the ratio of the effective half caliber of the third lens image side surface to the effective half caliber of the first lens object side surface are restrained, so that the light paths of the first three lenses are as close as possible, the depth of the outline structure of the optical imaging lens is smaller than 1 millimeter, the external dimension is smaller than 4 millimeters, and the optical characteristics of the high-screen ratio of the lens are convenient to realize.

In an exemplary embodiment, the optical imaging lens of the present application may satisfy a condition that TTL/ImgH is less than or equal to 1.5, where TTL is a distance between a center of an object side surface of the first lens and an imaging surface of the optical imaging lens on an optical axis, and ImgH is a half of a diagonal length of an effective pixel area on the imaging surface of the optical imaging lens. More specifically, TTL and ImgH can further satisfy 1.46.ltoreq.TTL/ImgH.ltoreq.1.50. By restricting the proportion of TTL and ImgH, the ultrathin characteristic of the optical imaging system is realized.

In an exemplary embodiment, the optical imaging lens of the present application may satisfy the condition that 1 < DT41/DT31 < 1.5, where DT41 is the maximum effective half-caliber of the object side surface of the fourth lens element and DT31 is the maximum effective half-caliber of the object side surface of the third lens element. More specifically, DT41 and DT31 may further satisfy 1.1 < DT41/DT31 < 1.4, e.g., 1.21. Ltoreq.DT 41/DT 31. Ltoreq.1.33. The height change of the light rays of the edge view field on the third lens and the fourth lens can be reasonably controlled by restraining the effective half caliber of the object side surface of the third lens and the effective half caliber of the object side surface of the fourth lens, so that the sensitivity of the edge view field is controlled.

In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 6.5 < |f34/f12| < 10.5, where f34 is a combined focal length of the third lens and the fourth lens, and f12 is a combined focal length of the first lens and the second lens. More specifically, f34 and f12 further satisfy 6.85.ltoreq.f34/f12.ltoreq.10.17. By constraining the ratio of f34 and f12, field curvature control of the imaging system can be constrained within a reasonable range.

In an exemplary embodiment, the optical imaging lens can satisfy the conditional expression of 9 +.ltoreq.R1+R2)/(R1-R2) < 10, wherein R1 is the radius of curvature of the object side of the first lens and R2 is the radius of curvature of the image side of the first lens. More specifically, R1 and R2 may further satisfy 9.0.ltoreq.R1+R2)/(R1-R2) < 9.5, for example, 9.04.ltoreq.R1+R2)/(R1-R2).ltoreq.9.38. By restricting the ranges of the radii of curvature of the object side surface and the image side surface of the first lens, the spherical aberration contribution amount of the first lens can be controlled. For an optical imaging system with a front diaphragm, the contribution of spherical aberration is mainly concentrated on the first lens, so that reasonable control of the spherical aberration contribution of the first lens is helpful for reasonable control of the spherical aberration of the optical imaging system.

In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 6.5 < |f1/f|+|f2/f|+|f5/f| < 9, for example, f1 is an effective focal length of the first lens, f2 is an effective focal length of the second lens, f5 is an effective focal length of the fifth lens, and f is a total effective focal length of the optical imaging lens. More specifically, f1, f2, f5 and f further satisfy 6.89.ltoreq.f1/f.ltoreq.f2/f.ltoreq.f5/f.ltoreq.8.61. The curvature of field balance generated by each lens at the front end and the rear end can be reasonably restrained within a certain range through the ratio of the effective focal lengths f1, f2 and f5 of the first lens, the second lens and the fifth lens to the total effective focal length f of the system.

In an exemplary embodiment, the optical imaging lens may further include at least one diaphragm to enhance the imaging quality of the lens. Optionally, a stop may be provided between the second lens and the third lens.

In an exemplary embodiment, the optical imaging lens of the present application may satisfy the condition of-1 < f/R5-f/R6 < 1, where f is the total effective focal length of the optical imaging lens, R5 is the radius of curvature of the object side surface of the third lens, and R6 is the radius of curvature of the image side surface of the third lens. More specifically, f, R5 and R6 may further satisfy-0.80.ltoreq.f/R5-f/R6.ltoreq.0.70. The pupil plane spherical aberration can be reasonably controlled within a certain reasonable range by restricting the curvature radius of the object side surface and the image side surface of the third lens near the diaphragm.

In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression |f4/r8| < 5, where f4 is an effective focal length of the fourth lens, and R8 is a radius of curvature of an image side surface of the fourth lens. More specifically, f4 and R8 may further satisfy 0.01.ltoreq.f4/R8.ltoreq.4.80. By controlling the focal power of the fourth lens and the curvature radius of the image side surface of the fourth lens, the contribution of astigmatism can be reasonably controlled, and the image quality of the marginal view field can be reasonably regulated and controlled.

In an exemplary embodiment, the optical imaging lens of the present application may satisfy the condition of 3 < | (r3+r4)/(r9+r10) | < 7, where R3 is a radius of curvature of an object side surface of the second lens, R4 is a radius of curvature of an image side surface of the second lens, R9 is a radius of curvature of an object side surface of the fifth lens, and R10 is a radius of curvature of an image side surface of the fifth lens. More specifically, R3, R4, R9 and R10 may further satisfy 3.14.ltoreq.I. (R3+R4)/(R9+R10).ltoreq.6.76. By regulating and controlling the sum of the object-side surface curvature radius and the image-side surface curvature radius of the second lens and the sum of the object-side surface curvature radius and the image-side surface curvature radius of the fifth lens, the third-order spherical aberration and the fifth-order spherical aberration of the imaging system can be reasonably balanced, and the image quality of a central view field area of the imaging system can be effectively improved.

In an exemplary embodiment, the optical imaging lens of the present application may satisfy the condition that Σat/(t12+t34) < 9.5, where Σat is the sum of the distances between any adjacent two lenses of the first lens to the fifth lens on the optical axis, T12 is the distance between the first lens and the second lens on the optical axis, and T34 is the distance between the third lens and the fourth lens on the optical axis. More specifically, sigmaAT, T12 and T34 may further satisfy 6.13.ltoreq.SigmaAT/(T12+T34). Ltoreq.9.29. By controlling the sum of the spacing distances between any two adjacent lenses from the first lens to the fifth lens on the optical axis and the sum of the air spacing between the first lens and the second lens and the air spacing between the third lens and the fourth lens, the distortion of the marginal view field of the imaging system can be effectively regulated and controlled, and the distortion quantity of the marginal view field is in a reasonable interval range.

Optionally, 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-described embodiments of the present application may employ a plurality of lenses, for example, five lenses as described above. By reasonably distributing the focal power, the surface shape, the center thickness of each lens, the axial spacing between each lens and the like, the volume of the lens can be effectively reduced, the sensitivity of the lens can be reduced, and the processability of the lens can be improved, so that the optical imaging lens is more beneficial to production and processing and is applicable to portable electronic products. In addition, the optical imaging lens configured as described above can also have advantageous effects such as ultra-thin, large aperture, high imaging quality, and the like.

In an embodiment of the present application, at least one of the mirrors of each 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.

However, it will be appreciated by those skilled in the art that the number of lenses making up the optical imaging lens may be varied to achieve the various results and advantages described in the specification without departing from the technical solutions claimed herein. For example, although the description has been made by taking five lenses as an example in the embodiment, the optical imaging lens is not limited to include five lenses. The optical imaging lens may also include other numbers of lenses, if desired.

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

An optical imaging lens according to embodiment 1 of the present application is described below with reference to fig. 1 to 2D. Fig. 1 shows a schematic configuration diagram of an optical imaging lens according to embodiment 1 of the present application.

As shown in fig. 1, a first lens E1, a second lens E2, a stop STO, a third lens E3, a fourth lens E4, a fifth lens E5, and an imaging surface S11.

The first lens element E1 has negative refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has positive refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is convex. The third lens element E3 has negative refractive power, wherein an object-side surface S5 thereof is concave and an image-side surface S6 thereof is convex. The fourth lens element E4 has positive refractive power, wherein an object-side surface S7 thereof is convex, and an image-side surface S8 thereof is convex. The fifth lens element E5 has negative refractive power, wherein an object-side surface S9 thereof is convex and an image-side surface S10 thereof is concave. Light from the object sequentially passes through the respective surfaces S1 to S10 and is finally imaged on the imaging surface S11.

Table 1 shows the surface types, the radii of curvature, the thicknesses, the materials, and the cone coefficients of the respective lenses of the optical imaging lens of example 1, in which the units of the radii of curvature and the thicknesses are millimeters (mm).

TABLE 1

As can be seen from table 1, the object side surface and the image side surface of any one of the first lens element E1 to the fifth lens element E5 are aspheric. In the present embodiment, the surface shape x of each aspherical lens can be defined by, but not limited to, the following aspherical 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 the conic coefficient (given in table 1); ai is the correction coefficient of the aspherical i-th order. Table 2 below shows the higher order coefficients A that can be used for each of the aspherical mirrors S1-S10 in example 1 ₄ 、A ₆ 、A ₈ 、A ₁₀ 、A ₁₂ 、A ₁₄ 、A ₁₆ 、A ₁₈ And A ₂₀ 。

Face number

A4

A6

A8

A10

A12

A14

A16

A18

A20

S1

-1.3813E-01

7.4204E-02

-3.8218E-01

8.6413E-01

-1.3403E+00

1.4151E+00

-9.6504E-01

3.8230E-01

-6.6887E-02

S2

-2.0975E-01

1.4992E-01

-5.1822E-01

5.3641E-01

2.3129E-02

-5.8320E-01

4.4831E-01

-6.0729E-02

-3.8833E-02

S3

-4.5330E-02

2.1702E-01

-6.8938E-01

1.6269E+00

-3.2418E+00

5.0971E+00

-5.3527E+00

3.1815E+00

-8.0625E-01

S4

-7.7428E-03

-1.2021E-01

8.7935E-01

-3.6767E+00

1.0002E+01

-1.7501E+01

1.8839E+01

-1.1306E+01

2.8739E+00

S5

-2.7041E-02

4.1898E-01

-1.6174E+00

4.8968E+00

-8.9769E+00

1.0403E+01

-7.3618E+00

2.7180E+00

-3.1846E-01

S6

-1.8215E-01

4.4609E-01

-1.7430E+00

5.4885E+00

-1.0168E+01

1.1629E+01

-8.1158E+00

3.1522E+00

-5.1973E-01

S7

-1.1324E-01

-2.3304E-02

-2.2923E-01

1.1095E+00

-2.1110E+00

2.2206E+00

-1.3705E+00

4.6735E-01

-6.8916E-02

S8

2.3242E-02

-1.0249E-01

1.0160E-01

-6.2884E-02

2.9259E-02

-1.1062E-02

3.0806E-03

-5.1727E-04

3.7468E-05

S9

-1.8040E-01

3.6595E-02

1.4250E-02

-1.0617E-02

2.8175E-03

-3.5592E-04

1.3265E-05

1.3864E-06

-1.1500E-07

S10

-6.1540E-02

-1.7893E-03

1.6770E-02

-1.0095E-02

3.2116E-03

-6.1523E-04

7.0597E-05

-4.4375E-06

1.1672E-07

TABLE 2

Table 3 gives the effective focal lengths f1 to f5 of the respective lenses in embodiment 1, the total effective focal length f of the optical imaging lens, the total optical length TTL (i.e., the distance on the optical axis from the center of the object side surface S1 of the first lens E1 to the imaging surface S11), and half the diagonal length ImgH of the effective pixel region on the imaging surface S11.

TABLE 3 Table 3

The optical imaging lens in embodiment 1 satisfies:

CT 5/ct1=3.51, wherein CT5 is the center thickness of the fifth lens E5 on the optical axis, and CT1 is the center thickness of the first lens E1 on the optical axis;

DT 22/dt11+dt32/dt11=1.91, wherein DT22 is the effective half-caliber of the image side surface S4 of the second lens element E2, DT11 is the effective half-caliber of the object side surface S1 of the first lens element E1, and DT32 is the effective half-caliber of the image side surface S6 of the third lens element E3;

TTL/imgh=1.46, where TTL is the distance between the center of the object side surface S1 of the first lens element E1 and the imaging surface S11 on the optical axis, and ImgH is half of the diagonal length of the effective pixel area on the imaging surface S11;

DT41/DT31 = 1.32, wherein DT41 is the maximum effective half-caliber of the object-side surface S7 of the fourth lens element E4, and DT31 is the maximum effective half-caliber of the object-side surface S5 of the third lens element E3;

f34/f12|=10.17, where f34 is the combined focal length of the third lens E3 and the fourth lens E4, and f12 is the combined focal length of the first lens E1 and the second lens E2;

(r1+r2)/(R1-R2) =9.38, wherein R1 is the radius of curvature of the object-side surface S1 of the first lens element E1, and R2 is the radius of curvature of the image-side surface S2 of the first lens element E1;

f1/f+|f2/f+|f5/f|=7.18, wherein f1 is the effective focal length of the first lens E1, f2 is the effective focal length of the second lens E2, f5 is the effective focal length of the fifth lens E5, and f is the total effective focal length of the optical imaging lens;

f/R5-f/r6= -0.80, wherein f is the total effective focal length of the optical imaging lens, R5 is the radius of curvature of the object-side surface S5 of the third lens element E3, and R6 is the radius of curvature of the image-side surface R6 of the third lens element E3;

f4/r8|=0.01, where f4 is the effective focal length of the fourth lens element E4 and R8 is the radius of curvature of the image-side surface R8 of the fourth lens element E4;

i (r3+r4)/(r9+r10) |=3.14, wherein R3 is the radius of curvature of the object-side surface R3 of the second lens element E2, R4 is the radius of curvature of the image-side surface R4 of the second lens element E2, R9 is the radius of curvature of the object-side surface R9 of the fifth lens element E5, and R10 is the radius of curvature of the image-side surface R10 of the fifth lens element E5;

Σat/(t12+t34) =8.52, where Σat is the sum of the optical axis spacing distances of any adjacent two lenses of the first lens E1 to the fifth lens E5, T12 is the optical axis spacing distance of the first lens E1 and the second lens E2, and T34 is the optical axis spacing distance of the third lens E3 and the fourth lens E4.

Fig. 2A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 1, which indicates the deviation of the converging focus after light rays of different wavelengths pass through the lens. Fig. 2B shows an astigmatism curve of the optical imaging lens of embodiment 1, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 2C shows a distortion curve of the optical imaging lens of embodiment 1, which represents distortion magnitude values at different angles of view. Fig. 2D shows a magnification chromatic aberration curve of the optical imaging lens of embodiment 1, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 2A to 2D, the optical imaging lens provided in embodiment 1 can achieve good imaging quality.

Example 2

An optical imaging lens according to embodiment 2 of the present application is described below with reference to fig. 3 to 4D. In this embodiment and the following embodiments, descriptions of portions similar to embodiment 1 will be omitted for brevity. Fig. 3 shows a schematic structural diagram of an optical imaging lens according to embodiment 2 of the present application.

As shown in fig. 3, a first lens E1, a second lens E2, a stop STO, a third lens E3, a fourth lens E4, a fifth lens E5, and an imaging surface S11.

The first lens element E1 has negative refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has positive refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has negative refractive power, wherein an object-side surface S5 thereof is concave and an image-side surface S6 thereof is convex. The fourth lens element E4 has negative refractive power, wherein an object-side surface S7 thereof is concave and an image-side surface S8 thereof is convex. The fifth lens element E5 has negative refractive power, wherein an object-side surface S9 thereof is convex and an image-side surface S10 thereof is concave. Light from the object sequentially passes through the respective surfaces S1 to S10 and is finally imaged on the imaging surface S11.

Table 4 shows the surface types, the radii of curvature, the thicknesses, the materials, and the cone coefficients of the respective lenses of the optical imaging lens of example 2, in which the units of the radii of curvature and the thicknesses are millimeters (mm).

TABLE 4 Table 4

As can be seen from table 4, in embodiment 2, the object side surface and the image side surface of any one of the first lens element E1 to the fifth lens element E5 are aspherical surfaces. Table 5 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 2, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.

Face number

A4

A6

A8

A10

A12

A14

A16

A18

A20

S1

-1.3544E-01

1.3661E-01

-4.7513E-01

1.0863E+00

-1.7338E+00

1.8181E+00

-1.1961E+00

4.4559E-01

-7.2181E-02

S2

-2.1221E-01

2.6338E-01

-9.7571E-01

2.6726E+00

-5.3942E+00

7.3498E+00

-6.3643E+00

3.1327E+00

-6.7199E-01

S3

-4.8683E-02

1.2997E-01

-3.0291E-01

5.6504E-01

-6.9795E-01

5.7504E-01

-3.1136E-01

1.0382E-01

-1.8228E-02

S4

-1.3447E-02

-7.1849E-02

4.7842E-01

-2.2625E+00

6.7405E+00

-1.2694E+01

1.4593E+01

-9.3392E+00

2.5422E+00

S5

3.4195E-02

-6.1435E-01

3.4010E+00

-1.4173E+01

4.3520E+01

-8.8940E+01

1.1325E+02

-8.0930E+01

2.4629E+01

S6

3.8810E-02

-1.8029E+00

8.5767E+00

-2.5893E+01

5.3458E+01

-7.2883E+01

6.2450E+01

-3.0373E+01

6.3746E+00

S7

8.4347E-03

-9.9920E-01

3.9842E+00

-9.9776E+00

1.6756E+01

-1.8561E+01

1.2899E+01

-5.0644E+00

8.5243E-01

S8

-1.4716E-01

1.7160E-01

-1.6046E-01

6.2798E-02

5.7607E-02

-1.0176E-01

6.5030E-02

-1.9974E-02

2.4180E-03

S9

-2.7871E-01

1.5277E-01

-5.1713E-02

8.3551E-03

1.3002E-03

-1.0002E-03

2.1918E-04

-2.2489E-05

9.1407E-07

S10

-1.0906E-01

5.2936E-02

-1.8181E-02

3.9157E-03

-4.1972E-04

-1.2821E-05

9.3966E-06

-1.0005E-06

3.5625E-08

TABLE 5

Table 6 shows the effective focal lengths f1 to f5 of the respective lenses in embodiment 2, the total effective focal length f of the optical imaging lens, the total optical length TTL, and half the diagonal length ImgH of the effective pixel region on the imaging surface S11.

TABLE 6

Fig. 4A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 2, which indicates the deviation of the converging focus after light rays of different wavelengths pass through the lens. Fig. 4B shows an astigmatism curve of the optical imaging lens of embodiment 2, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 4C shows a distortion curve of the optical imaging lens of embodiment 2, which represents distortion magnitude values at different angles of view. Fig. 4D shows a magnification chromatic aberration curve of the optical imaging lens of embodiment 2, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 4A to 4D, the optical imaging lens provided in embodiment 2 can achieve good imaging quality.

Example 3

An optical imaging lens according to embodiment 3 of the present application is described below with reference to fig. 5 to 6D. Fig. 5 shows a schematic structural diagram of an optical imaging lens according to embodiment 3 of the present application.

As shown in fig. 5, a first lens E1, a second lens E2, a stop STO, a third lens E3, a fourth lens E4, a fifth lens E5, and an imaging surface S11.

The first lens element E1 has negative refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has positive refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has negative refractive power, wherein an object-side surface S5 thereof is concave and an image-side surface S6 thereof is convex. The fourth lens element E4 has positive refractive power, wherein an object-side surface S7 thereof is convex, and an image-side surface S8 thereof is convex. The fifth lens element E5 has negative refractive power, wherein an object-side surface S9 thereof is convex and an image-side surface S10 thereof is concave. Light from the object sequentially passes through the respective surfaces S1 to S10 and is finally imaged on the imaging surface S11.

Table 7 shows the surface types, the radii of curvature, the thicknesses, the materials, and the cone coefficients of the respective lenses of the optical imaging lens of example 3, in which the units of the radii of curvature and the thicknesses are millimeters (mm).

TABLE 7

As can be seen from table 7, in embodiment 3, the object side surface and the image side surface of any one of the first lens element E1 to the fifth lens element E5 are aspherical surfaces. Table 8 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 3, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.

Face number

A4

A6

A8

A10

A12

A14

A16

A18

A20

S1

-1.3034E-01

1.2370E-01

-3.8872E-01

6.6195E-01

-5.8009E-01

2.4474E-02

3.9648E-01

-3.0799E-01

7.5723E-02

S2

-2.4313E-01

4.2315E-01

-1.7134E+00

5.0759E+00

-1.0159E+01

1.3164E+01

-1.0702E+01

4.9681E+00

-1.0136E+00

S3

-9.5646E-02

4.0419E-01

-1.7411E+00

6.0618E+00

-1.4149E+01

2.1515E+01

-2.0415E+01

1.0936E+01

-2.5246E+00

S4

-1.5199E-02

-1.0771E-01

5.5783E-01

-2.0897E+00

5.4065E+00

-9.4650E+00

1.0476E+01

-6.5231E+00

1.7131E+00

S5

5.7337E-02

-9.4343E-01

5.6184E+00

-2.2303E+01

6.0322E+01

-1.0582E+02

1.1515E+02

-7.0599E+01

1.8552E+01

S6

2.8453E-02

-1.8567E+00

8.1847E+00

-2.2421E+01

4.2050E+01

-5.2357E+01

4.1206E+01

-1.8514E+01

3.6078E+00

S7

-2.4426E-04

-1.0148E+00

3.8043E+00

-8.8062E+00

1.3670E+01

-1.4029E+01

9.0487E+00

-3.3056E+00

5.1900E-01

S8

-1.5876E-01

2.3797E-01

-3.3047E-01

3.4880E-01

-2.5312E-01

1.1810E-01

-3.2392E-02

4.3233E-03

-1.5760E-04

S9

-3.0128E-01

2.0001E-01

-1.0426E-01

4.3329E-02

-1.2885E-02

2.5377E-03

-3.1229E-04

2.1744E-05

-6.5563E-07

S10

-1.0432E-01

5.7127E-02

-2.3614E-02

6.9782E-03

-1.4353E-03

1.9569E-04

-1.6430E-05

7.5441E-07

-1.4286E-08

TABLE 8

Table 9 shows the effective focal lengths f1 to f5 of the respective lenses in embodiment 3, the total effective focal length f of the optical imaging lens, the total optical length TTL, and half the diagonal length ImgH of the effective pixel region on the imaging surface S11.

f1(mm)	-12.63	f5(mm)	-13.66
				f2(mm)	2.67	f(mm)	3.90
f3(mm)	-13.90	TTL(mm)	4.77
				f4(mm)	29.05	ImgH(mm)	3.23

TABLE 9

Fig. 6A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 3, which indicates a convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 6B shows an astigmatism curve of the optical imaging lens of embodiment 3, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 6C shows a distortion curve of the optical imaging lens of embodiment 3, which represents distortion magnitude values at different angles of view. Fig. 6D shows a magnification chromatic aberration curve of the optical imaging lens of embodiment 3, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 6A to 6D, the optical imaging lens provided in embodiment 3 can achieve good imaging quality.

Example 4

An optical imaging lens according to embodiment 4 of the present application is described below with reference to fig. 7 to 8D. Fig. 7 shows a schematic structural diagram of an optical imaging lens according to embodiment 4 of the present application.

As shown in fig. 7, a first lens E1, a second lens E2, a stop STO, a third lens E3, a fourth lens E4, a fifth lens E5, and an imaging surface S11.

The first lens element E1 has negative refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has positive refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is concave, and an image-side surface S6 thereof is convex. The fourth lens element E4 has negative refractive power, wherein an object-side surface S7 thereof is concave and an image-side surface S8 thereof is convex. The fifth lens element E5 has negative refractive power, wherein an object-side surface S9 thereof is convex and an image-side surface S10 thereof is concave. Light from the object sequentially passes through the respective surfaces S1 to S10 and is finally imaged on the imaging surface S11.

Table 10 shows the surface types, the radii of curvature, the thicknesses, the materials, and the cone coefficients of the respective lenses of the optical imaging lens of example 4, in which the units of the radii of curvature and the thicknesses are millimeters (mm).

Table 10

As can be seen from table 10, in example 4, the object side surface and the image side surface of any one of the first lens element E1 to the fifth lens element E5 are aspherical surfaces. Table 11 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 4, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.

Face number

A4

A6

A8

A10

A12

A14

A16

A18

A20

S1

-1.2575E-01

1.0997E-01

-5.2934E-01

1.5751E+00

-3.0239E+00

3.6415E+00

-2.6763E+00

1.0949E+00

-1.9148E-01

S2

-2.0815E-01

2.1327E-01

-1.0426E+00

3.8753E+00

-9.3727E+00

1.4207E+01

-1.3154E+01

6.7828E+00

-1.4998E+00

S3

-6.6387E-02

2.3496E-01

-1.1803E+00

4.6361E+00

-1.1448E+01

1.7742E+01

-1.6761E+01

8.8121E+00

-1.9805E+00

S4

-1.1601E-02

-1.0067E-01

7.0269E-01

-3.4352E+00

1.0447E+01

-1.9726E+01

2.2407E+01

-1.3992E+01

3.6728E+00

S5

4.0651E-02

-6.6886E-01

4.0419E+00

-1.6376E+01

4.6021E+01

-8.4825E+01

9.6975E+01

-6.2028E+01

1.6841E+01

S6

-5.1151E-02

-1.2858E+00

6.8146E+00

-2.0947E+01

4.1835E+01

-5.3602E+01

4.2343E+01

-1.8709E+01

3.5291E+00

S7

5.1942E-02

-1.1668E+00

4.4009E+00

-1.0446E+01

1.5995E+01

-1.5671E+01

9.3810E+00

-3.0970E+00

4.2930E-01

S8

-1.6691E-01

2.0331E-01

-2.0727E-01

1.4351E-01

-7.3114E-02

3.0990E-02

-9.7779E-03

1.8329E-03

-1.4751E-04

S9

-2.7373E-01

1.8267E-01

-1.0405E-01

4.7837E-02

-1.5399E-02

3.2409E-03

-4.2544E-04

3.1720E-05

-1.0299E-06

S10

-8.5773E-02

4.6059E-02

-2.0066E-02

6.3232E-03

-1.3876E-03

2.0146E-04

-1.8010E-05

8.8318E-07

-1.8022E-08

TABLE 11

Table 12 shows the effective focal lengths f1 to f5 of the respective lenses in embodiment 4, the total effective focal length f of the optical imaging lens, the total optical length TTL, and half the diagonal length ImgH of the effective pixel region on the imaging surface S11.

f1(mm)	-12.80	f5(mm)	-12.74
				f2(mm)	2.70	f(mm)	3.94
f3(mm)	7.12	TTL(mm)	4.80
				f4(mm)	-6.23	ImgH(mm)	3.23

Table 12

Fig. 8A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 4, which indicates a convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 8B shows an astigmatism curve of the optical imaging lens of embodiment 4, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 8C shows a distortion curve of the optical imaging lens of embodiment 4, which represents distortion magnitude values at different angles of view. Fig. 8D shows a magnification chromatic aberration curve of the optical imaging lens of embodiment 4, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 8A to 8D, the optical imaging lens provided in embodiment 4 can achieve good imaging quality.

Example 5

An optical imaging lens according to embodiment 5 of the present application is described below with reference to fig. 9 to 10D. Fig. 9 shows a schematic structural diagram of an optical imaging lens according to embodiment 5 of the present application.

As shown in fig. 9, a first lens E1, a second lens E2, a stop STO, a third lens E3, a fourth lens E4, a fifth lens E5, and an imaging surface S11.

Table 13 shows the surface types, the radii of curvature, the thicknesses, the materials, and the cone coefficients of the respective lenses of the optical imaging lens of example 5, in which the units of the radii of curvature and the thicknesses are millimeters (mm).

TABLE 13

As can be seen from table 13, in example 5, the object side surface and the image side surface of any one of the first lens element E1 to the fifth lens element E5 are aspherical surfaces. Table 14 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 5, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.

Face number

A4

A6

A8

A10

A12

A14

A16

A18

A20

S1

-1.3330E-01

1.4533E-01

-5.4772E-01

1.2637E+00

-2.0012E+00

2.0737E+00

-1.3395E+00

4.8703E-01

-7.6641E-02

S2

-2.2136E-01

3.6157E-01

-1.4890E+00

4.1855E+00

-8.2538E+00

1.0749E+01

-8.7357E+00

3.9930E+00

-7.9164E-01

S3

-7.5298E-02

3.5398E-01

-1.4119E+00

4.0922E+00

-7.9494E+00

1.0015E+01

-7.7309E+00

3.2931E+00

-5.9144E-01

S4

-2.1661E-02

1.5661E-01

-1.5249E+00

7.3706E+00

-2.0958E+01

3.5958E+01

-3.6489E+01

2.0059E+01

-4.5795E+00

S5

8.2189E-02

-1.6019E+00

1.1247E+01

-4.9439E+01

1.3947E+02

-2.5197E+02

2.8347E+02

-1.8133E+02

5.0306E+01

S6

1.0378E-01

-2.1911E+00

1.1101E+01

-3.4823E+01

6.9741E+01

-8.8145E+01

6.8460E+01

-2.9973E+01

5.6615E+00

S7

2.0378E-02

-1.2904E+00

5.8916E+00

-1.5963E+01

2.6539E+01

-2.7032E+01

1.6448E+01

-5.4783E+00

7.5909E-01

S8

-1.6961E-01

7.6559E-02

2.6438E-01

-7.6098E-01

9.4195E-01

-6.3622E-01

2.4103E-01

-4.8107E-02

3.9423E-03

S9

-3.0222E-01

1.8737E-01

-9.7319E-02

4.5560E-02

-1.5967E-02

3.6932E-03

-5.2647E-04

4.1865E-05

-1.4212E-06

S10

-1.0616E-01

4.8716E-02

-1.4136E-02

1.4306E-03

4.9161E-04

-2.0898E-04

3.3759E-05

-2.6231E-06

8.0648E-08

TABLE 14

Table 15 shows the effective focal lengths f1 to f5 of the respective lenses in embodiment 5, the total effective focal length f of the optical imaging lens, the total optical length TTL, and half the diagonal length ImgH of the effective pixel region on the imaging surface S11.

f1(mm)	-12.84	f5(mm)	-13.34
				f2(mm)	2.68	f(mm)	3.90
f3(mm)	-86.41	TTL(mm)	4.74
				f4(mm)	-43.21	ImgH(mm)	3.23

TABLE 15

Fig. 10A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 5, which indicates a convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 10B shows an astigmatism curve of the optical imaging lens of embodiment 5, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 10C shows a distortion curve of the optical imaging lens of embodiment 5, which represents distortion magnitude values at different angles of view. Fig. 10D shows a magnification chromatic aberration curve of the optical imaging lens of embodiment 5, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 10A to 10D, the optical imaging lens provided in embodiment 5 can achieve good imaging quality.

Example 6

An optical imaging lens according to embodiment 6 of the present application is described below with reference to fig. 11 to 12D. Fig. 11 shows a schematic structural diagram of an optical imaging lens according to embodiment 6 of the present application.

As shown in fig. 11, a first lens E1, a second lens E2, a stop STO, a third lens E3, a fourth lens E4, a fifth lens E5, and an imaging surface S11.

The first lens element E1 has negative refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has positive refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has negative refractive power, wherein an object-side surface S5 thereof is concave and an image-side surface S6 thereof is convex. The fourth lens element E4 has positive refractive power, wherein an object-side surface S7 thereof is concave and an image-side surface S8 thereof is convex. The fifth lens element E5 has negative refractive power, wherein an object-side surface S9 thereof is convex and an image-side surface S10 thereof is concave. Light from the object sequentially passes through the respective surfaces S1 to S10 and is finally imaged on the imaging surface S11.

Table 16 shows the surface types, the radii of curvature, the thicknesses, the materials, and the cone coefficients of the respective lenses of the optical imaging lens of example 6, in which the units of the radii of curvature and the thicknesses are millimeters (mm).

Table 16

As can be seen from table 16, in example 6, the object side surface and the image side surface of any one of the first lens element E1 to the fifth lens element E5 are aspherical surfaces. Table 17 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 6, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.

Face number

A4

A6

A8

A10

A12

A14

A16

A18

A20

S1

-1.3066E-01

1.2707E-01

-6.1277E-01

1.7708E+00

-3.1561E+00

3.4376E+00

-2.2504E+00

8.1445E-01

-1.2614E-01

S2

-1.9170E-01

1.7428E-01

-1.0460E+00

4.2751E+00

-1.0511E+01

1.5398E+01

-1.3357E+01

6.3485E+00

-1.2866E+00

S3

-4.2717E-02

1.7430E-01

-8.9363E-01

3.5532E+00

-8.7836E+00

1.3385E+01

-1.2271E+01

6.2221E+00

-1.3510E+00

S4

-1.9233E-02

4.9100E-02

-2.7543E-01

3.2877E-01

1.5737E+00

-7.0831E+00

1.2147E+01

-9.9746E+00

3.2267E+00

S5

-1.6686E-02

-4.6822E-01

4.2637E+00

-2.2327E+01

7.2850E+01

-1.4740E+02

1.8023E+02

-1.2208E+02

3.5067E+01

S6

-3.8422E-02

-1.1858E+00

6.0935E+00

-1.9334E+01

3.9771E+01

-5.1618E+01

4.0813E+01

-1.7952E+01

3.3690E+00

S7

2.0975E-03

-5.8104E-01

2.0271E+00

-4.8708E+00

7.2815E+00

-6.5260E+00

3.3047E+00

-8.2618E-01

6.9839E-02

S8

-1.3933E-01

2.5994E-01

-3.9865E-01

3.5758E-01

-1.9530E-01

6.5409E-02

-1.3071E-02

1.4301E-03

-6.6025E-05

S9

-2.7345E-01

1.9192E-01

-1.0976E-01

4.8047E-02

-1.4591E-02

2.9094E-03

-3.6284E-04

2.5688E-05

-7.9012E-07

S10

-7.5752E-02

3.5133E-02

-1.3582E-02

3.9592E-03

-8.4077E-04

1.2104E-04

-1.0731E-05

5.1600E-07

-1.0202E-08

TABLE 17

Table 18 shows the effective focal lengths f1 to f5 of the respective lenses in embodiment 6, the total effective focal length f of the optical imaging lens, the total optical length TTL, and half the diagonal length ImgH of the effective pixel region on the imaging surface S11.

f1(mm)	-12.76	f5(mm)	-17.65
				f2(mm)	2.67	f(mm)	3.84
f3(mm)	-14.79	TTL(mm)	4.80
				f4(mm)	39.79	ImgH(mm)	3.23

TABLE 18

Fig. 12A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 6, which indicates a convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 12B shows an astigmatism curve of the optical imaging lens of embodiment 6, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 12C shows a distortion curve of the optical imaging lens of embodiment 6, which represents distortion magnitude values at different angles of view. Fig. 12D shows a magnification chromatic aberration curve of the optical imaging lens of embodiment 6, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 12A to 12D, the optical imaging lens provided in embodiment 6 can achieve good imaging quality.

In summary, examples 1 to 6 satisfy the relationships shown in table 19, respectively.

TABLE 19

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 it is intended to cover other embodiments in which any combination of features described above or equivalents thereof is possible without departing from the spirit of the invention. 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. The optical imaging lens sequentially comprises, from an object side to an image side along an optical axis: a first lens, a second lens, a third lens, a fourth lens and a fifth lens, characterized in that,

the first lens has negative focal power, the object side surface of the first lens is a convex surface, and the image side surface of the first lens is a concave surface;

the second lens has positive focal power, and the object side surface of the second lens is a convex surface;

the third lens has optical power, the object side surface of the third lens is concave, and the image side surface of the third lens is convex;

the fourth lens has optical power;

the fifth lens has negative focal power, the object side surface of the fifth lens is a convex surface, and the image side surface of the fifth lens is a concave surface;

The number of lenses with focal power in the optical imaging lens is five;

at least one of the mirror surfaces of each lens in the optical imaging lens is an aspheric mirror surface;

the central thickness CT1 of the first lens on the optical axis and the central thickness CT5 of the fifth lens on the optical axis are more than or equal to 3.5 and less than or equal to CT5/CT1 and less than or equal to 5.

2. The optical imaging lens as claimed in claim 1, wherein an effective half-caliber DT11 of an object side surface of the first lens, an effective half-caliber DT22 of an image side surface of the second lens, and an effective half-caliber DT32 of an image side surface of the third lens satisfy 1.5 < DT22/DT11+dt32/DT11 < 2.

3. The optical imaging lens as claimed in claim 1, wherein a radius of curvature R1 of an object side surface of the first lens and a radius of curvature R2 of an image side surface of the first lens satisfy 9+ (r1+r2)/(R1-R2) < 10.

4. The optical imaging lens according to claim 1, wherein a radius of curvature R3 of an object side surface of the second lens, a radius of curvature R4 of an image side surface of the second lens, a radius of curvature R9 of an object side surface of the fifth lens, and a radius of curvature R10 of an image side surface of the fifth lens satisfy 3 < | (r3+r4)/(r9+r10) | < 7.

5. The optical imaging lens as claimed in claim 1, wherein a total effective focal length f of the optical imaging lens, a radius of curvature R5 of an object side surface of the third lens, and a radius of curvature R6 of an image side surface of the third lens satisfy-1 < f/R5-f/R6 < 1.

6. The optical imaging lens of claim 1, wherein an effective focal length f4 of the fourth lens and a radius of curvature R8 of an image side surface of the fourth lens satisfy |f4/r8| < 5.

7. The optical imaging lens according to claim 1, wherein an effective focal length f1 of the first lens, an effective focal length f2 of the second lens, an effective focal length f5 of the fifth lens, and a total effective focal length f of the optical imaging lens satisfy 6.5 < |f1/f|+|f2/f|+|f5/f| < 9.

8. The optical imaging lens of claim 7, wherein a combined focal length f34 of the third lens and the fourth lens and a combined focal length f12 of the first lens and the second lens satisfy 6.5 < |f34/f12| < 10.5.

9. The optical imaging lens as claimed in claim 1, wherein a maximum effective half-caliber DT41 of an object side surface of the fourth lens and a maximum effective half-caliber DT31 of an object side surface of the third lens satisfy 1 < DT41/DT31 < 1.5.

10. The optical imaging lens according to any one of claims 1 to 9, wherein a distance TTL between a center of an object side surface of the first lens and an imaging surface of the optical imaging lens on an optical axis and a half ImgH of a diagonal length of an effective pixel area on the imaging surface of the optical imaging lens satisfy TTL/ImgH is equal to or less than 1.5.

11. The optical imaging lens according to any one of claims 1 to 9, wherein a sum Σat of separation distances on the optical axis of any adjacent two lenses of the first to fifth lenses, a separation distance T12 on the optical axis of the first and second lenses, and a separation distance T34 on the optical axis of the third and fourth lenses satisfy 6 < Σat/(t12+t34) < 9.5.

12. The optical imaging lens sequentially comprises, from an object side to an image side along an optical axis: a first lens, a second lens, a third lens, a fourth lens and a fifth lens, characterized in that,

The fourth lens has optical power;

the number of lenses with focal power in the optical imaging lens is five;

the combined focal length f34 of the third lens and the fourth lens and the combined focal length f12 of the first lens and the second lens satisfy 6.5 < |f34/f12| < 10.5, and

13. The optical imaging lens of claim 12, wherein an effective half-caliber DT11 of an object side surface of the first lens, an effective half-caliber DT22 of an image side surface of the second lens, and an effective half-caliber DT32 of an image side surface of the third lens satisfy 1.5 < DT22/DT11+dt32/DT11 < 2.

14. The optical imaging lens of claim 12, wherein an effective focal length f1 of the first lens, an effective focal length f2 of the second lens, an effective focal length f5 of the fifth lens, and a total effective focal length f of the optical imaging lens satisfy 6.5 < |f1/f|+|f2/f|+|f5/f| < 9.

15. The optical imaging lens of claim 14, wherein a radius of curvature R1 of an object side surface of the first lens and a radius of curvature R2 of an image side surface of the first lens satisfy 9+ (r1+r2)/(R1-R2) < 10.

16. The optical imaging lens system according to claim 14, wherein a radius of curvature R3 of an object side surface of the second lens element, a radius of curvature R4 of an image side surface of the second lens element, a radius of curvature R9 of an object side surface of the fifth lens element, and a radius of curvature R10 of an image side surface of the fifth lens element satisfy 3 < | (r3+r4)/(r9+r10) | < 7.

17. The optical imaging lens of claim 12, wherein a total effective focal length f of the optical imaging lens, a radius of curvature R5 of an object-side surface of the third lens, and a radius of curvature R6 of an image-side surface of the third lens satisfy-1 < f/R5-f/R6 < 1.

18. The optical imaging lens of claim 12, wherein an effective focal length f4 of the fourth lens and a radius of curvature R8 of an image side surface of the fourth lens satisfy |f4/r8| < 5.

19. The optical imaging lens of claim 17 or 18, wherein a maximum effective half-caliber DT41 of an object side surface of the fourth lens and a maximum effective half-caliber DT31 of an object side surface of the third lens satisfy 1 < DT41/DT31 < 1.5.

20. The optical imaging lens as claimed in claim 12, wherein a distance TTL between a center of the object side surface of the first lens and an imaging surface of the optical imaging lens on an optical axis is equal to or less than 1.5 from half ImgH of a diagonal length of an effective pixel area on the imaging surface of the optical imaging lens.

21. The optical imaging lens according to claim 20, wherein a sum Σat of separation distances on the optical axis of any adjacent two lenses of the first lens to the fifth lens, a separation distance T12 on the optical axis of the first lens and the second lens, and a separation distance T34 on the optical axis of the third lens and the fourth lens satisfy 6 < Σat/(t12+t34) < 9.5.