CN113448058B

CN113448058B - Optical imaging lens

Info

Publication number: CN113448058B
Application number: CN202110852019.9A
Authority: CN
Inventors: 侯璟; 张晓彬; 闻人建科; 戴付建; 赵烈烽
Original assignee: Zhejiang Sunny Optics Co Ltd
Current assignee: Zhejiang Sunny Optics Co Ltd
Priority date: 2021-07-27
Filing date: 2021-07-27
Publication date: 2022-11-25
Anticipated expiration: 2041-07-27
Also published as: CN113448058A

Abstract

The invention provides an optical imaging lens. The imaging lens system sequentially comprises the following components from the object side of the imaging lens to the image side of the imaging lens: the first lens has positive focal power, and the image side surface of the first lens is a convex surface; a second lens having a positive refractive power; a third lens; a fourth lens; a fifth lens; the on-axis distance TTL from the object side surface of the first lens to the imaging surface of the optical imaging lens and the half ImgH of the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens satisfy the following condition: 0.9 and then all of TTL/ImgH is less than 1.4; the maximum half field angle Semi-FOV of the optical imaging lens meets the following requirements: 50 ° < Semi-FOV <60 °. The invention solves the problem that the optical imaging lens in the prior art cannot give consideration to both large field angle and miniaturization.

Description

Optical imaging lens

Technical Field

The invention relates to the technical field of optical imaging equipment, in particular to an optical imaging lens.

Background

Because electronic equipment such as smart phones have high iteration speed and market demands are steadily improved, single mobile phones usually carry 2-8 camera lenses and usually comprise optical imaging lenses with different functions such as large aperture, super wide angle, long focus, optical anti-shake function and large image plane, and the selection of people is greatly enriched. The wide-angle lens is introduced into the front-mounted photographing module, and compared with a conventional lens, object information with a larger field angle can be captured, so that more figure details can be accommodated during self photographing, but the space for accommodating the front-mounted lens on the mobile phone is limited, the optical imaging lens needs to be made thinner, and the imaging quality of the optical imaging lens is sacrificed.

That is, the optical imaging lens in the prior art has the problem that the large field angle and the miniaturization can not be compatible.

Disclosure of Invention

The invention mainly aims to provide an optical imaging lens, which solves the problem that the optical imaging lens in the prior art cannot give consideration to both large field angle and miniaturization.

In order to achieve the above object, according to an aspect of the present invention, there is provided an optical imaging lens, comprising, in order from an object side to an image side of the optical imaging lens: the first lens has positive focal power, and the image side surface of the first lens is a convex surface; a second lens having a positive refractive power; a third lens; a fourth lens; a fifth lens; the on-axis distance TTL from the object side surface of the first lens to the imaging surface of the optical imaging lens and the half ImgH of the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens satisfy the following condition: 0.9 and then all of TTL/ImgH is less than 1.4; the maximum half field angle Semi-FOV of the optical imaging lens meets the following requirements: 50 ° < Semi-FOV <60 °.

Further, the distance SD from the diaphragm of the optical imaging lens to the image side surface of the fifth lens meets the requirement that the distance ImgH is half of the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens: 0.6 sD/ImgH <1.1.

Further, the effective focal length f of the optical imaging lens, the on-axis distance TD between the object side surface of the first lens and the image side surface of the fifth lens and the maximum half field angle Semi-FOV of the optical imaging lens satisfy the conditions that 1 is less than f about TAN (Semi-FOV)/TD <1.4.

Further, the effective focal length f of the optical imaging lens and the effective focal length f1 of the first lens satisfy: 1.9 were woven so as to have f1/f <2.3.

Further, the effective focal length f of the optical imaging lens, the effective focal length f3 of the third lens and the effective focal length f4 of the fourth lens satisfy the following conditions: -3.5 sj/(f 3+ f 4) < -2.

Further, a combined focal length f1234 of the first lens, the second lens, the third lens and the fourth lens and a combined focal length f2345 of the second lens, the third lens, the fourth lens and the fifth lens satisfy: 0.4 sP 1234/f2345<1.

Further, a curvature radius R9 of an object-side surface of the fifth lens and a curvature radius R10 of an image-side surface of the fifth lens satisfy: 0< (R9-R10)/(R9 + R10) <0.4.

Further, the effective focal length f4 of the fourth lens, the curvature radius R7 of the object side surface of the fourth lens, and the curvature radius R8 of the image side surface of the fourth lens satisfy: 1< -f4/(R7 + R8) <3.5.

Further, an on-axis distance BFL from the image-side surface of the fifth lens element to the imaging surface of the optical imaging lens and a sum Σ AT of air spaces on the optical axis of the optical imaging lens between any adjacent two of the first lens element to the fifth lens element satisfy: 0.4< ∑ AT/BFL <0.8.

Further, the sum Σ AT of the air intervals on the optical axis of the optical imaging lens between any two adjacent lenses of the first to fifth lenses, the sum Σ CT of the thicknesses on the optical axis of the optical imaging lens of the first to fifth lenses, respectively, and the axial distance BFL from the image side surface of the fifth lens to the imaging surface of the optical imaging lens satisfy: 0.8< (∑ AT + BFL)/. Σ CT <1.

Further, the thickness CT1 of the first lens on the optical axis of the optical imaging lens, the thickness CT2 of the second lens on the optical axis of the optical imaging lens, and the air interval T12 of the first lens and the second lens on the optical axis satisfy: 0.5< | CT1-CT2|/T12<0.8.

Further, the thickness CT3 of the third lens on the optical axis of the optical imaging lens, the thickness CT4 of the fourth lens on the optical axis, and the thickness CT5 of the fifth lens on the optical axis satisfy: 0.9< (CT 3+ CT 4)/(CT 4+ CT 5) <1.1.

Further, the air interval T23 of the second lens and the third lens on the optical axis of the optical imaging lens and the sum Σ AT of the air intervals on the optical axis of the optical imaging lens between any adjacent two of the first lens to the fifth lens satisfy: 0.35 Tp 23/AT <0.45.

Further, the maximum effective radius DT32 of the image-side surface of the third lens and the maximum effective radius DT52 of the image-side surface of the fifth lens satisfy: 0.4-woven DT32/DT52<0.5.

Further, the maximum effective radius DT11 of the object side surface of the first lens, the maximum effective radius DT32 of the image side surface of the third lens and the maximum effective radius SR of the diaphragm of the optical imaging lens satisfy: 0.9< (DT 32-DT 11)/SR <1.1.

According to another aspect of the present invention, there is provided an optical imaging lens, comprising, in order from an object side to an image side of the optical imaging lens: the first lens has positive focal power, and the image side surface of the first lens is a convex surface; a second lens having a positive refractive power; a third lens; a fourth lens; a fifth lens; the effective focal length f of the optical imaging lens, the on-axis distance TD from the object side surface of the first lens to the image side surface of the fifth lens and the maximum half field angle Semi-FOV of the optical imaging lens meet the conditions that 1 is formed by the bundles f and TAN (Semi-FOV)/TD is less than 1.4; the maximum half field angle Semi-FOV of the optical imaging lens meets the following requirements: 50 ° < Semi-FOV <60 °.

Further, the distance SD from the diaphragm of the optical imaging lens to the image side surface of the fifth lens meets the requirement that the distance ImgH is half of the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens: 0.6< -SD/ImgH <1.1.

Further, the effective focal length f of the optical imaging lens, the effective focal length f3 of the third lens and the effective focal length f4 of the fourth lens satisfy the following condition: -3.5 sj/(f 3+ f 4) < -2.

Further, the effective focal length f4 of the fourth lens, the curvature radius R7 of the object side surface of the fourth lens, and the curvature radius R8 of the image side surface of the fourth lens satisfy: 1 were woven so as to be f4/(R7 + R8) <3.5.

Further, a sum Σ AT of air spaces on the optical axis of the optical imaging lens between any adjacent two lenses of the first to fifth lenses, a sum Σ CT of thicknesses on the optical axis of the optical imaging lens of the first to fifth lenses, respectively, and an on-axis distance BFL from the image-side surface of the fifth lens to the imaging surface of the optical imaging lens satisfy: 0.8< (∑ AT + BFL)/. Σ CT <1.

By applying the technical scheme of the invention, the optical imaging lens sequentially comprises a first lens, a second lens, a third lens, a fourth lens and a fifth lens from the object side to the image side of the optical imaging lens; the first lens has positive focal power, and the image side surface of the first lens is a convex surface; the second lens has positive focal power; the on-axis distance TTL from the object side surface of the first lens to the imaging surface of the optical imaging lens and the half ImgH of the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens satisfy the following condition: 0.9 and then all of TTL/ImgH is less than 1.4; the maximum half field angle Semi-FOV of the optical imaging lens meets the following requirements: 50 ° < Semi-FOV <60 °.

Through the reasonable distribution of the focal power of each lens, the aberration generated by the optical imaging lens is balanced, and the imaging quality of the optical imaging lens is greatly improved. The TTL/ImgH is limited within a reasonable range, the total length of the optical imaging lens can be limited, the optical imaging lens is ensured to have a larger image surface range, the miniaturization and the lightness and thinness of the optical imaging lens are ensured, the small, exquisite and light structure is favorable for assembly on electronic products such as mobile phones, and meanwhile, the design freedom degree of the electronic products such as the mobile phones is increased. By limiting the maximum half field angle Semi-FOV to the range of 50 ° to 60 °, the optical imaging lens is enabled to acquire an image in a larger angular range, so that the optical imaging lens can be used as a wide-angle lens. The arrangement enables the optical imaging lens to realize miniaturization and wide-angle shooting.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic view showing a configuration of an optical imaging lens according to a first example of the present invention;

fig. 2 to 5 respectively show an on-axis chromatic aberration curve, a magnification chromatic aberration curve, an astigmatism curve, and a distortion curve of the optical imaging lens in fig. 1;

fig. 6 is a schematic view showing a configuration of an optical imaging lens according to a second example of the present invention;

fig. 7 to 10 respectively show an on-axis chromatic aberration curve, a magnification chromatic aberration curve, an astigmatism curve, and a distortion curve of the optical imaging lens in fig. 6;

fig. 11 is a schematic view showing a configuration of an optical imaging lens of example three of the present invention;

fig. 12 to 15 show an on-axis chromatic aberration curve, a magnification chromatic aberration curve, an astigmatism curve, and a distortion curve of the optical imaging lens in fig. 11, respectively;

fig. 16 is a schematic configuration diagram showing an optical imaging lens of example four of the present invention;

fig. 17 to 20 show an on-axis chromatic aberration curve, a magnification chromatic aberration curve, an astigmatism curve, and a distortion curve of the optical imaging lens in fig. 16, respectively;

fig. 21 is a schematic view showing a configuration of an optical imaging lens of example five of the present invention;

fig. 22 to 25 respectively show an on-axis chromatic aberration curve, a magnification chromatic aberration curve, an astigmatism curve, and a distortion curve of the optical imaging lens in fig. 21;

fig. 26 is a schematic configuration diagram showing an optical imaging lens of example six of the present invention;

fig. 27 to 30 show an on-axis chromatic aberration curve, a magnification chromatic aberration curve, an astigmatism curve, and a distortion curve of the optical imaging lens in fig. 26, respectively.

Wherein the figures include the following reference numerals:

STO, diaphragm; e1, a first lens; s1, an object side surface of a first lens; s2, an image side surface of the first lens; e2, a second lens; s3, an object side surface of the second lens; s4, the image side surface of the second lens; e3, a third lens; s5, an object side surface of the third lens; s6, the image side surface of the third lens; e4, a fourth lens; s7, an object side surface of the fourth lens; s8, the image side surface of the fourth lens; e5, a fifth lens; s9, an object side surface of the fifth lens; s10, an image side surface of the fifth lens; e6, a filter plate; s11, an object side surface of the filter plate; s12, an image side surface of the filter plate; s13, imaging; s14, an image side surface of the filter plate; and S15, imaging.

Detailed Description

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

It is noted that, unless otherwise indicated, all 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.

In the present invention, unless stated to the contrary, the use of directional terms such as "upper, lower, top, bottom" or the like, generally refers to the orientation of the components as shown in the drawings, or to the vertical, perpendicular, or gravitational orientation of the components themselves; likewise, for ease of understanding and description, "inner and outer" refer to inner and outer relative to the profile of the components themselves, but the above directional terms are not intended to limit the invention.

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

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

Herein, the paraxial region refers to a region near the optical axis. If the lens surface is convex and the convex position is not defined, it means that the lens surface is convex at least in the paraxial region; if the lens surface is concave and the concave position is not defined, it means that the lens surface is concave at least in the paraxial region. The surface of each lens close to the object side becomes the object side surface of the lens, and the surface of each lens close to the image side is called the image side surface of the lens. The determination of the surface shape in the paraxial region can be performed by determining whether or not the surface shape is concave or convex, based on the R value (R denotes the radius of curvature of the paraxial region, and usually denotes the R value in a lens database (lens data) in optical software) in accordance with the determination method of a person ordinarily skilled in the art. For the object side surface, when the R value is positive, the object side surface is judged to be convex, and when the R value is negative, the object side surface is judged to be concave; in the case of the image side surface, the image side surface is determined to be concave when the R value is positive, and is determined to be convex when the R value is negative.

The invention provides an optical imaging lens, aiming at solving the problem that the optical imaging lens in the prior art cannot give consideration to both large field angle and miniaturization.

Example one

As shown in fig. 1 to 30, the optical imaging lens includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element and a fifth lens element; the first lens has positive focal power, and the image side surface of the first lens is a convex surface; the second lens has positive focal power; the on-axis distance TTL from the object side surface of the first lens to the imaging surface of the optical imaging lens and the half ImgH of the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens satisfy the following condition: 0.9 and then all of TTL/ImgH is less than 1.4; the maximum half field angle Semi-FOV of the optical imaging lens meets the following requirements: 50 ° < Semi-FOV <60 °.

Through the reasonable distribution of the focal power of each lens, the aberration generated by the optical imaging lens is balanced, and the imaging quality of the optical imaging lens is greatly improved. The TTL/ImgH is limited within a reasonable range, the total length of the optical imaging lens can be limited, the optical imaging lens is ensured to have a larger image surface range, the miniaturization and the lightness and thinness of the optical imaging lens are ensured, the small, exquisite and light structure is favorable for assembly on electronic products such as mobile phones, and meanwhile, the design freedom degree of the electronic products such as the mobile phones is increased. By limiting the maximum half field angle Semi-FOV to the range of 50 ° to 60 °, the optical imaging lens is enabled to capture an image in a larger angular range, so that the optical imaging lens can be used as a wide-angle lens. The arrangement enables the optical imaging lens to realize miniaturization and wide-angle shooting.

Preferably, an on-axis distance TTL from the object-side surface of the first lens element to the imaging surface of the optical imaging lens and a half ImgH of a diagonal length of the effective pixel area on the imaging surface of the optical imaging lens satisfy: 0.3 and straw TTL/ImgH <1.38.

In the embodiment, the distance SD from the diaphragm of the optical imaging lens to the image side surface of the fifth lens and the half ImgH of the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens satisfy: 0.6 sD/ImgH <1.1. The optical imaging lens can be miniaturized and portable by limiting the distance from the diaphragm to the image side surface of the fifth lens, and the compact structure is also favorable for resisting torsion, falling from high altitude, testing a roller and realizing wider application. The SD/ImgH is controlled in a reasonable range, so that the optical imaging lens can be in an ultrathin state, the optical imaging lens is favorable for being installed in a front-mounted photographing module of electronic equipment such as a mobile phone and the like, and the installation and debugging of the front-mounted photographing module are facilitated. Preferably, 0.64-Ap SD/ImgH <1.1.

In the embodiment, the effective focal length f of the optical imaging lens, the on-axis distance TD between the object side surface of the first lens and the image side surface of the fifth lens and the maximum half field angle Semi-FOV of the optical imaging lens satisfy 1-f × TAN (Semi-FOV)/TD <1.4. By limiting f × TAN (Semi-FOV)/TD within a reasonable range, the optical imaging lens can have a smaller focal length and a larger field angle, and the basic relationship of the wide-angle lens is satisfied. And meanwhile, the axial distance from the object side surface of the first lens to the image side surface of the fifth lens is limited, namely the length of the optical imaging lens is controlled, so that the optical imaging lens is small, light and easy to mount. Preferably, 1.05 tow f tan (Semi-FOV)/TD <1.38.

In the present embodiment, the effective focal length f of the optical imaging lens and the effective focal length f1 of the first lens satisfy: 1.9 were woven so as to have f1/f <2.3. By limiting f1/f within a reasonable range, the proportion of the focal power of the first lens in the total focal power of the optical imaging lens is reasonably distributed, so that the deflection of light rays in the first lens can be reduced, the overlarge focal power of the first lens is avoided, the sensitivity of the first lens is reduced, the overlarge tolerance requirement is avoided, the spherical aberration, astigmatism and the like generated by the first lens can be reduced, and the imaging quality of the optical imaging lens is improved. Preferably, 1.9 were woven fabric of f1/f <2.25.

In the embodiment, the effective focal length f of the optical imaging lens, the effective focal length f3 of the third lens and the effective focal length f4 of the fourth lens satisfy: -3.5 sj/(f 3+ f 4) < -2. Through the cooperation of the focal lengths of the third lens and the fourth lens, the optical imaging lens keeps the above relation with the effective focal length of the optical imaging lens, positive and negative spherical aberration, coma aberration, astigmatism and the like caused by the third lens and the fourth lens can be complementarily eliminated, meanwhile, chromatic dispersion and chromatic aberration caused by different wavelengths can be effectively eliminated, light convergence is facilitated, the imaging quality of the whole optical imaging lens is improved, and better resolving power is obtained. Preferably, -3.3-woven fabric f/(f 3+ f 4) -2.02.

In the present embodiment, a combined focal length f1234 of the first lens, the second lens, the third lens, and the fourth lens and a combined focal length f2345 of the second lens, the third lens, the fourth lens, and the fifth lens satisfy: 0.4 sP 1234/f2345<1. The focal power of each lens can be effectively distributed within a reasonable range by limiting f1234/f2345, so that the effective focal length and the position of a focal point of the optical imaging lens are balanced, the sensitivity of five lenses is reduced, the strict tolerance requirement is avoided, the deflection of each field ray on the surface of the lens is smoother, the trend of the light path is smoother, and the total reflection of the ray and the ghost risk on the surface of the lens can be effectively reduced. And positive and negative spherical aberration, magnification chromatic aberration and the like under different fields of view can be better complementarily eliminated by mutually distributing and matching the optical imaging lens with the whole optical imaging lens. Preferably, 0.45- </1234/f 2345<0.9.

In the present embodiment, a radius of curvature R9 of the object-side surface of the fifth lens and a radius of curvature R10 of the image-side surface of the fifth lens satisfy: 0< (R9-R10)/(R9 + R10) <0.4. The relation of curvature radiuses of the object side face of the fifth lens and the image side face of the fifth lens is reasonably controlled, the processing difficulty caused by overlarge field angle can be avoided, the edge rise of the lens can be controlled to be overlarge, the processability is improved, strict tolerance limit and process level are avoided, coma, field curvature and the like of the optical imaging lens are effectively buffered, and the spherical aberration and the field curvature of the fifth lens are effectively balanced. Preferably, 0.05< (R9-R10)/(R9 + R10) <0.35.

In the present embodiment, the effective focal length f4 of the fourth lens, the radius of curvature R7 of the object-side surface of the fourth lens, and the radius of curvature R8 of the image-side surface of the fourth lens satisfy: 1 were woven so as to be f4/(R7 + R8) <3.5. The curvature radiuses of the object side surface of the fourth lens and the image side surface of the fourth lens are reasonably distributed, so that the curvature radiuses of the two optical surfaces of the fourth lens are in a reasonable range, the convergence of light rays is facilitated, the deflection of the light rays in the fourth lens can be slowed down, the focal power distribution of the fourth lens is more reasonable, the sensitivity of the fourth lens is effectively reduced, and the generation of surface total reflection and ghost images is avoided. Preferably, 1.3-woven fabric f 4/(R7 + R8) <3.4.

In this embodiment, an on-axis distance BFL from the image-side surface of the fifth lens to the imaging surface of the optical imaging lens and a sum Σ AT of air intervals on the optical axis of the optical imaging lens between any adjacent two of the first lens to the fifth lens satisfy: 0.4< ∑ AT/BFL <0.8. Through the total sum of the air space on the optical axis between two adjacent lenses, the sufficient clearance between each lens is ensured, the interference problem caused by the fact that the two lenses are too close is avoided, the installation of the separating sheet and the spacing ring is convenient, the light deflection and the energy distribution between the adjacent lenses can be weakened, and the adjustment of optical parameters is also facilitated. The size of the optical back focus is constrained, the size of the back focus can be maintained at a reasonable level, the image surface illumination can be effectively improved, the size of the last lens can be reduced, and the installation and the driving of a voice coil motor are facilitated. Preferably, 0.45< ∑ AT/BFL <0.75.

In the present embodiment, a sum Σ AT of air spaces on the optical axis of the optical imaging lens between any two adjacent lenses of the first to fifth lenses, a sum Σ CT of thicknesses on the optical axis of the optical imaging lens of the first to fifth lenses, respectively, and an on-axis distance BFL from the image-side surface of the fifth lens to the imaging surface of the optical imaging lens satisfy: 0.8< (∑ AT + BFL)/. Σ CT <1. By limiting (Sigma AT + BFL)/. Sigma CT in a reasonable range, air gaps among five lenses can be reasonably distributed, the processing and assembling manufacturability is ensured, meanwhile, the condition that a single lens is too thin can be avoided, the reasonable distribution of the thickness of the lens is facilitated, the thickness of each lens meets the minimum thickness required by the assembling stability, and the assembling deformation and ghost reflection energy of the lens can be reduced; the optical imaging lens is guaranteed to have enough optical back focus, and the voice coil motor is convenient to install and debug. The small and ultrathin characteristic of the optical imaging lens can be kept by the arrangement, the field curvature of the lens is adjusted, the thickness of each lens and the sensitivity of air intervals are reduced, and the risk that ghost images and stray light are caused by appearance problems of the third lens and the fourth lens is avoided. Preferably, 0.81< (∑ AT + BFL)/. Σ CT <0.98.

In the present embodiment, the thickness CT1 of the first lens on the optical axis of the optical imaging lens, the thickness CT2 of the second lens on the optical axis of the optical imaging lens, and the air interval T12 of the first lens and the second lens on the optical axis satisfy: 0.5< | CT1-CT2|/T12<0.8. The central thickness of the first lens and the second lens is reasonably distributed, the processing and the assembly of the lenses are facilitated, the ghost risk, the thickness sensitivity and the surface type sensitivity of the lenses can be effectively reduced, the light ray deflection and the energy distribution between the two lenses can be weakened by balancing the air gap between the first lens and the second lens, and the light ray deflection caused by the fact that the focal power is too concentrated is steep. The cooperation of the central thickness of the lens and the air space can effectively reduce the coma aberration and astigmatism of the optical imaging lens, and greatly help the stabilization of the field curvature and the MTF peak value. Preferably, 0.51< | CT1-CT2|/T12<0.75.

In the present embodiment, the thickness CT3 of the third lens on the optical axis of the optical imaging lens, the thickness CT4 of the fourth lens on the optical axis, and the thickness CT5 of the fifth lens on the optical axis satisfy: 0.9< (CT 3+ CT 4)/(CT 4+ CT 5) <1.1. The (CT 3+ CT 4)/(CT 4+ CT 5) is limited within a reasonable range, and the middle part of the optical imaging lens is in a thickness symmetry state, so that the optical imaging lens is more stable and has strong processability. The central thicknesses of the third lens, the fourth lens and the fifth lens are reasonably controlled, so that the central thicknesses of the respective lenses meet the minimum thickness required by the assembling stability, the assembling deformation and ghost reflection energy of the lenses can be reduced, the distortion and dispersion of the optical imaging lens can be better balanced, and the miniaturization of the optical imaging lens is facilitated. Preferably, 0.9< (CT 3+ CT 4)/(CT 4+ CT 5) <1.08.

In the present embodiment, the air interval T23 of the second lens and the third lens on the optical axis of the optical imaging lens and the sum Σ AT of the air intervals on the optical axis of the optical imaging lens between any adjacent two of the first lens to the fifth lens satisfy: 0.35 T23/sigma AT <0.45. The T23/sigma AT is limited within a reasonable range, so that the air space between the second lens and the third lens on the optical axis is larger, the light deflection between the second lens and the third lens can be effectively weakened, the energy density between the second lens and the third lens can be weakened, the air gaps between other lenses can be reasonably distributed, the processing and assembling manufacturability can be ensured, the interference problem caused by too close two lenses can be avoided, the field curvature of the optical imaging lens can be adjusted, and the lens sensitivity degree can be reduced. Preferably, 0.36 ≦ T23/Σ AT <0.44.

In the present embodiment, the maximum effective radius DT32 of the image-side surface of the third lens and the maximum effective radius DT52 of the image-side surface of the fifth lens satisfy: 0.4-woven DT32/DT52<0.5. The ratio of the maximum effective radiuses of the third lens and the fifth lens is reasonably controlled, the miniaturization of the lenses can be guaranteed, the large difference of the radiuses of the third lens and the fifth lens is avoided, and therefore the uniformity of the size of the optical imaging lens is guaranteed. By limiting the aperture ratio, the stray light of the wide light beam can be effectively filtered, and the stray light and ghost images of the optical imaging lens are reduced. Preferably, 0.42 ≦ DT32/DT52<0.47.

In the present embodiment, the maximum effective radius DT11 of the object-side surface of the first lens, the maximum effective radius DT32 of the image-side surface of the third lens, and the maximum effective radius SR of the stop of the optical imaging lens satisfy: 0.9< (DT 32-DT 11)/SR <1.1. The relation of the half apertures of the first lens, the third lens and the diaphragm is reasonably controlled, on one hand, the vignetting coefficient of the optical imaging lens can be effectively controlled, and part of light rays with poor imaging quality can be intercepted, so that the resolution power and the image surface illumination of the whole optical imaging lens can be improved; on the other hand, the problem of large section difference caused by overlarge radius difference between the first lens and the third lens can be avoided, the assembly stability is ensured, and meanwhile, the lens CRA (Chief Ray Angle) can be better matched with a photosensitive chip. Preferably, 0.93< (DT 32-DT 11)/SR <1.07.

Example two

As shown in fig. 1 to fig. 30, the optical imaging lens includes, in order from an object side to an image side of the optical imaging lens, a first lens, a second lens, a third lens, a fourth lens and a fifth lens; the first lens has positive focal power, and the image side surface of the first lens is a convex surface; the second lens has positive focal power; the effective focal length f of the optical imaging lens, the on-axis distance TD from the object side surface of the first lens to the image side surface of the fifth lens and the maximum half field angle Semi-FOV of the optical imaging lens meet the conditions that 1 is formed by the bundles f and TAN (Semi-FOV)/TD is less than 1.4; the maximum half field angle Semi-FOV of the optical imaging lens meets the following requirements: 50 ° < Semi-FOV <60 °.

Through the reasonable distribution of the focal power of each lens, the optical imaging lens is favorable for balancing the aberration generated by the optical imaging lens, and the imaging quality of the optical imaging lens is greatly improved. By limiting f × TAN (Semi-FOV)/TD within a reasonable range, the optical imaging lens can be ensured to have a smaller focal length and a larger field angle, and the basic relationship of the wide-angle lens is satisfied. And meanwhile, the axial distance from the object side surface of the first lens to the image side surface of the fifth lens is limited, namely the length of the optical imaging lens is controlled, so that the optical imaging lens is small, light and easy to mount. By limiting the maximum half field angle Semi-FOV to the range of 50 ° to 60 °, the optical imaging lens is enabled to capture an image in a larger angular range, so that the optical imaging lens can be used as a wide-angle lens. The arrangement enables the optical imaging lens to realize miniaturization and wide-angle shooting.

Preferably, the effective focal length f of the optical imaging lens, the on-axis distance TD from the object-side surface of the first lens to the image-side surface of the fifth lens, and the maximum half field angle Semi-FOV of the optical imaging lens satisfy 1.05< -f TAN (Semi-FOV)/TD <1.38.

In the embodiment, the distance SD from the diaphragm of the optical imaging lens to the image side surface of the fifth lens and the half ImgH of the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens satisfy: 0.6 sD/ImgH <1.1. The optical imaging lens can be miniaturized and portable by limiting the distance from the diaphragm to the image side surface of the fifth lens, and the compact structure is also favorable for resisting torsion, falling from high altitude, testing a roller and realizing wider application. The SD/ImgH is controlled within a reasonable range, so that the optical imaging lens can be in an ultrathin state, the optical imaging lens is favorably installed in a front-mounted shooting module of electronic equipment such as a mobile phone and the like, and the installation and debugging of the front-mounted shooting module are favorably realized. Preferably, 0.64-sD/ImgH <1.1.

In the present embodiment, a combined focal length f1234 of the first lens, the second lens, the third lens, and the fourth lens and a combined focal length f2345 of the second lens, the third lens, the fourth lens, and the fifth lens satisfy: 0.4 sP 1234/f2345<1. The focal power of each lens can be effectively distributed within a reasonable range by limiting f1234/f2345, so that the effective focal length and the position of a focal point of the optical imaging lens are balanced, the sensitivity of five lenses is reduced, the strict tolerance requirement is avoided, the deflection of each field ray on the surface of the lens is smoother, the trend of the light path is smoother, and the total reflection of the ray and the ghost risk on the surface of the lens can be effectively reduced. And positive and negative spherical aberration, magnification chromatic aberration and the like under different fields of view can be better complementarily eliminated by mutually distributing and matching the optical imaging lens. Preferably, 0.45-woven fabric f1234/f2345<0.9.

In this embodiment, an on-axis distance BFL from the image-side surface of the fifth lens to the imaging surface of the optical imaging lens and a sum Σ AT of air intervals on the optical axis of the optical imaging lens between any adjacent two of the first lens to the fifth lens satisfy: 0.4< ∑ AT/BFL <0.8. Through the total of the air interval on the optical axis between two adjacent lenses of restriction, guaranteed to have sufficient clearance between each lens, avoid two too close interference problems that lead to of lens, the installation of the spacer of being convenient for, spacer ring can weaken light deflection and energy distribution between adjacent lens, also is favorable to optical parameter's adjustment. The size of the optical back focus is restricted, the size of the back focus can be maintained at a reasonable level, the image surface illumination can be effectively improved, the size of the last lens can be reduced, and the voice coil motor is favorably installed and driven. Preferably, 0.45< ∑ AT/BFL <0.75.

In the present embodiment, a sum Σ AT of air spaces on the optical axis of the optical imaging lens between any two adjacent lenses of the first to fifth lenses, a sum Σ CT of thicknesses on the optical axis of the optical imaging lens of the first to fifth lenses, respectively, and an on-axis distance BFL from the image-side surface of the fifth lens to the imaging surface of the optical imaging lens satisfy: 0.8< (∑ AT + BFL)/. Σ CT <1. By limiting (sigma AT + BFL)/. Sigma CT in a reasonable range, air gaps among five lenses can be reasonably distributed, the processing and assembling manufacturability is ensured, meanwhile, the situation that a single lens is too thin can be avoided, the reasonable distribution of the thickness of the lens is facilitated, the thickness of each lens meets the minimum thickness required by the assembling stability, and the assembling deformation and ghost reflection energy of the lens can be reduced; the optical imaging lens is guaranteed to have enough optical back focus, and the voice coil motor is convenient to install and debug. The small and ultrathin characteristic of the optical imaging lens can be kept by the arrangement, the field curvature of the lens is adjusted, the thickness of each lens and the sensitivity of air intervals are reduced, and the risk that ghost images and stray light are caused by appearance problems of the third lens and the fourth lens is avoided. Preferably, 0.81< (∑ AT + BFL)/. Σ CT <0.98.

In the embodiment, the thickness CT1 of the first lens on the optical axis of the optical imaging lens, the thickness CT2 of the second lens on the optical axis of the optical imaging lens and the air interval T12 of the first lens and the second lens on the optical axis satisfy: 0.5< | CT1-CT2|/T12<0.8. The central thickness of the first lens and the second lens is reasonably distributed, the processing and the assembly of the lenses are facilitated, the ghost risk, the thickness sensitivity and the surface type sensitivity of the lenses can be effectively reduced, the light ray deflection and the energy distribution between the two lenses can be weakened by balancing the air gap between the first lens and the second lens, and the light ray deflection caused by the fact that the focal power is too concentrated is steep. The cooperation of the central thickness of the lens and the air space can effectively reduce the coma aberration and astigmatism of the optical imaging lens, and greatly help the stabilization of the field curvature and the MTF peak value. Preferably, 0.51< | CT1-CT2|/T12<0.75.

Optionally, the optical imaging lens may further include a filter for correcting color deviation and/or a protective glass for protecting a photosensitive element on the imaging surface.

The optical imaging lens in the present application may employ a plurality of lenses, for example, the above-mentioned five lenses. By reasonably distributing the focal power, the surface shape, the central thickness of each lens, the axial distance between each lens and the like, the aperture of the optical imaging lens can be effectively increased, the sensitivity of the lens can be reduced, and the machinability of the lens can be improved, so that the optical imaging lens is more beneficial to production and processing and can be suitable for portable electronic equipment such as smart phones. The optical imaging lens also has large aperture and large field angle. The advantages of ultra-thin and good imaging quality can meet the miniaturization requirement of intelligent electronic products.

In the present application, at least one of the mirror surfaces of each lens is an aspherical mirror surface. The aspheric 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 curvature radius characteristic, and has advantages of improving distortion aberration and improving astigmatism aberration. After the aspheric lens is adopted, the aberration generated during imaging can be eliminated as much as possible, thereby improving the imaging quality.

However, it will be appreciated by those skilled in the art that the number of lenses constituting the optical imaging lens may be varied to achieve the various results and advantages described in the present specification without departing from the claimed technical solutions. For example, although five lenses are exemplified in the embodiments, the optical imaging lens is not limited to include five lenses. The optical imaging lens may also include other numbers of lenses, as desired.

Examples of specific surface types and parameters applicable to the optical imaging lens of the above-described embodiment are further described below with reference to the drawings.

It should be noted that any one of the following examples one to six is applicable to all embodiments of the present application.

Example one

As shown in fig. 1 to 5, an optical imaging lens of the first example of the present application is described. Fig. 1 shows a schematic diagram of an optical imaging lens structure of example one.

As shown in fig. 1, the optical imaging lens includes, in order from an object side to an image side: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, filter E6, and image plane S13.

The first lens element E1 has positive refractive power, and the object-side surface S1 and the image-side surface S2 of the first lens element are convex. The second lens element E2 has positive refractive power, and the object-side surface S3 of the second lens element is concave, and the image-side surface S4 of the second lens element is convex. The third lens element E3 has negative refractive power, and the object-side surface S5 and the image-side surface S6 of the third lens element are concave and convex, respectively. The fourth lens element E4 has positive refractive power, and the object-side surface S7 and the image-side surface S8 of the fourth lens element are convex. The fifth lens element E5 has negative refractive power, and the object-side surface S9 and the image-side surface S10 of the fifth lens element are convex and concave, respectively. Filter E6 has an object side surface S11 of the filter and an image side surface S12 of the filter. The light from the object sequentially passes through the respective surfaces S1 to S13 and is finally imaged on the imaging surface S13.

In this example, the total effective focal length f of the optical imaging lens is 2.48mm, the maximum half field angle Semi-FOV of the optical imaging lens is 53.25 °, the total length TTL of the optical imaging lens is 3.97mm, and the image height ImgH is 3.04mm.

Table 1 shows a basic structural parameter table of the optical imaging lens of example one, in which the units of the radius of curvature, the thickness/distance, the focal length, and the effective radius are all millimeters (mm).

TABLE 1

In example one, 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 surfaces, and the surface shape of each aspheric surface lens can be defined by, but is not limited to, the following aspheric surface formula:

wherein x is the rise of the distance from the aspheric surface vertex to the aspheric surface vertex when the aspheric surface is at the position with the height of h along the optical axis direction; c is the paraxial curvature of the aspheric surface, c =1/R (i.e., paraxial curvature c is the inverse of radius of curvature R in table 1 above); k is a conic coefficient; ai is the correction coefficient of the i-th order of the aspherical surface. Table 2 below gives the coefficients of the higher-order terms A4, A6, A8, A10, A12, A14, A16, A18, A20, A22, A24, A26, A28, A30 that can be used for each of the aspherical mirror surfaces S1-S10 in example one.

Flour mark

A4

A6

A8

A10

A12

A14

A16

S1

-1.1041E-01

-4.5104E-01

1.5159E+00

3.4016E+00

-1.8333E+02

1.5027E+03

-5.9568E+03

S2

-2.8276E-01

2.1578E-01

-5.6289E+00

3.2521E+01

-1.0173E+02

1.1924E+02

1.8361E+02

S3

-2.8732E-01

1.2300E+00

-1.5531E+01

9.8260E+01

-3.8793E+02

9.4825E+02

-1.3919E+03

S4

-7.6220E-02

-6.2967E-01

3.1406E+00

-1.8945E+01

6.4160E+01

-1.2710E+02

1.4907E+02

S5

1.3724E+00

-4.0233E+00

5.5829E+00

-3.3677E+00

4.5599E+00

-1.2245E+01

1.4001E+01

S6

1.0493E+00

-2.0417E+00

-7.8207E-01

1.0490E+01

-2.0520E+01

2.1296E+01

-1.3202E+01

S7

1.5055E-01

-2.6598E-01

-2.1670E-01

1.0814E+00

-1.5617E+00

1.3023E+00

-7.0671E-01

S8

-1.2951E-01

1.6199E+00

-3.6655E+00

4.4355E+00

-3.2749E+00

1.4915E+00

-3.8150E-01

S9

6.9420E-02

-2.4995E-01

-3.2870E-01

1.3656E+00

-2.2728E+00

2.5089E+00

-1.9544E+00

S10

-1.0681E-01

-2.4624E-01

6.0888E-01

-7.9717E-01

7.2425E-01

-4.7692E-01

2.2912E-01

Flour mark

A18

A20

A22

A24

A26

A28

A30

S1

1.1856E+04

-9.4364E+03

0.0000E+00

S2

-6.7552E+02

5.6462E+02

0.0000E+00

S3

1.1324E+03

-3.9477E+02

0.0000E+00

S4

-9.5973E+01

2.5973E+01

0.0000E+00

S5

-6.5291E+00

9.5686E-01

0.0000E+00

S6

4.6817E+00

-7.3512E-01

0.0000E+00

S7

2.5792E-01

-6.2976E-02

9.8764E-03

-8.9969E-04

3.6173E-05

0.0000E+00

S8

2.8216E-02

1.3116E-02

-4.3778E-03

5.5271E-04

-2.6606E-05

0.0000E+00

S9

1.0788E+00

-4.1958E-01

1.1362E-01

-2.0910E-02

2.4903E-03

-1.7298E-04

5.3207E-06

S10

-8.0155E-02

2.0275E-02

-3.6533E-03

4.5587E-04

-3.7360E-05

1.8064E-06

-3.9009E-08

TABLE 2

Fig. 2 shows an on-axis chromatic aberration curve of the optical imaging lens of example one, which represents the deviation of the convergent focus of light rays of different wavelengths after passing through the optical imaging lens. Fig. 3 shows a chromatic aberration of magnification curve of the optical imaging lens of the first example, which represents the deviation of different image heights on the imaging plane after the light passes through the optical imaging lens. Fig. 4 shows astigmatism curves of the optical imaging lens of example one, which represent meridional field curvature and sagittal field curvature. Fig. 5 shows distortion curves of the optical imaging lens of example one, which indicate distortion magnitude values corresponding to different angles of view.

As can be seen from fig. 2 to 5, the optical imaging lens according to the first example can achieve good imaging quality.

Example two

As shown in fig. 6 to 10, an optical imaging lens of example two of the present application is described. In this and the following examples, a description of portions similar to example one will be omitted for the sake of brevity. Fig. 6 shows a schematic diagram of the optical imaging lens structure of example two.

As shown in fig. 6, the optical imaging lens includes, in order from an object side to an image side: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, filter E6, and image plane S13.

The first lens element E1 has positive refractive power, and the object-side surface S1 and the image-side surface S2 of the first lens element are convex. The second lens element E2 has positive refractive power, and the object-side surface S3 and the image-side surface S4 of the second lens element are convex. The third lens element E3 has negative refractive power, and the object-side surface S5 and the image-side surface S6 of the third lens element are concave and convex, respectively. The fourth lens element E4 has positive refractive power, and the object-side surface S7 and the image-side surface S8 of the fourth lens element are convex, respectively. The fifth lens element E5 has negative refractive power, and the object-side surface S9 and the image-side surface S10 of the fifth lens element are convex and concave, respectively. Filter E6 has an object side surface S11 of the filter and an image side surface S12 of the filter. The light from the object passes through the respective surfaces S1 to S13 in order and is finally imaged on the imaging plane S13.

In this example, the total effective focal length f of the optical imaging lens is 2.48mm, the maximum half field angle Semi-FOV of the optical imaging lens is 51.30 °, the total length TTL of the optical imaging lens is 3.96mm, and the image height ImgH is 2.88mm.

Table 3 shows a basic structural parameter table of the optical imaging lens of example two, in which the units of the radius of curvature, the thickness/distance, the focal length, and the effective radius are all millimeters (mm).

TABLE 3

Table 4 shows the high-order term coefficients that can be used for each aspherical mirror surface in example two, wherein each aspherical mirror surface type can be defined by formula (1) given in example two above.

TABLE 4

Fig. 7 shows on-axis chromatic aberration curves of the optical imaging lens of example two, which represent deviation of the convergence focus of light rays of different wavelengths after passing through the optical imaging lens. Fig. 8 shows a chromatic aberration of magnification curve of the optical imaging lens of example two, which represents the deviation of different image heights on the imaging plane after light passes through the optical imaging lens. Fig. 9 shows astigmatism curves of the optical imaging lens of example two, which represent meridional field curvature and sagittal field curvature. Fig. 10 shows distortion curves of the optical imaging lens of example two, which indicate values of distortion magnitudes corresponding to different angles of view.

As can be seen from fig. 7 to 10, the optical imaging lens according to the second example can achieve good imaging quality.

Example III

As shown in fig. 11 to 15, an optical imaging lens of example three of the present application is described. Fig. 11 shows a schematic diagram of an optical imaging lens structure of example three.

As shown in fig. 11, the optical imaging lens includes, in order from an object side to an image side: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, filter E6, and image plane S13.

The first lens element E1 has positive refractive power, and the object-side surface S1 and the image-side surface S2 of the first lens element are convex. The second lens element E2 has positive refractive power, and the object-side surface S3 and the image-side surface S4 of the second lens element are convex. The third lens element E3 has negative refractive power, and the object-side surface S5 and the image-side surface S6 thereof are concave and convex, respectively. The fourth lens element E4 has positive refractive power, and the object-side surface S7 and the image-side surface S8 of the fourth lens element are convex, respectively. The fifth lens element E5 has negative refractive power, and the object-side surface S9 and the image-side surface S10 of the fifth lens element are convex and concave, respectively. Filter E6 has an object side surface S11 of the filter and an image side surface S12 of the filter. The light from the object passes through the respective surfaces S1 to S13 in order and is finally imaged on the imaging plane S13.

In this example, the total effective focal length f of the optical imaging lens is 2.39mm, the maximum half field angle Semi-FOV of the optical imaging lens is 53.64 °, the total length TTL of the optical imaging lens is 3.91mm, and the image height ImgH is 2.90mm.

Table 5 shows a basic structural parameter table of the optical imaging lens of example three, in which the units of the radius of curvature, thickness/distance, focal length, and effective radius are all millimeters (mm).

TABLE 5

Table 6 shows the high-order term coefficients that can be used for each aspherical mirror surface in example three, wherein each aspherical mirror surface type can be defined by formula (1) given in example three above.

Flour mark

A4

A6

A8

A10

A12

A14

A16

S1

-1.4803E-01

4.0251E-01

-1.1938E+01

1.4130E+02

-1.1105E+03

5.6265E+03

-1.7587E+04

S2

-2.5041E-01

-7.0086E-01

7.3593E+00

-7.2525E+01

4.3843E+02

-1.6730E+03

3.9410E+03

S3

-3.1045E-01

1.4876E+00

-1.8340E+01

1.1819E+02

-4.8245E+02

1.2336E+03

-1.9116E+03

S4

-1.3576E-01

5.9712E-02

-1.3363E+00

-9.7516E-01

1.9835E+01

-6.3689E+01

1.0409E+02

S5

1.2286E+00

-1.3841E+00

-1.3171E+01

7.5264E+01

-2.0383E+02

3.4007E+02

-3.5533E+02

S6

9.0123E-01

-6.6014E-01

-6.5934E+00

2.5341E+01

-4.4841E+01

4.6876E+01

-3.0007E+01

S7

8.2406E-02

-1.4315E-02

-7.6270E-01

1.7926E+00

-2.1348E+00

1.6029E+00

-8.1459E-01

S8

-9.9394E-02

1.3567E+00

-2.7288E+00

2.4883E+00

-8.1274E-01

-4.6978E-01

6.3512E-01

S9

9.5470E-02

-4.6237E-01

3.7755E-01

1.4759E-01

-1.0582E+00

1.7634E+00

-1.6532E+00

S10

-1.4214E-01

-1.5412E-01

4.9411E-01

-6.9304E-01

6.4032E-01

-4.1708E-01

1.9546E-01

Flour mark

A18

A20

A22

A24

A26

A28

A30

S1

3.0583E+04

-2.2418E+04

0.0000E+00

S2

-5.2210E+03

3.0035E+03

0.0000E+00

S3

1.6512E+03

-6.0945E+02

0.0000E+00

S4

-8.9631E+01

3.2308E+01

0.0000E+00

S5

2.1265E+02

-5.5327E+01

0.0000E+00

S6

1.1003E+01

-1.7804E+00

0.0000E+00

S7

2.8559E-01

-6.8168E-02

1.0573E-02

-9.5918E-04

3.8553E-05

0.0000E+00

S8

-3.2024E-01

9.1584E-02

-1.5553E-02

1.4661E-03

-5.9267E-05

0.0000E+00

S9

9.8758E-01

-3.9366E-01

1.0620E-01

-1.9182E-02

2.2248E-03

-1.4991E-04

4.4646E-06

S10

-6.6278E-02

1.6201E-02

-2.8164E-03

3.3865E-04

-2.6716E-05

1.2422E-06

-2.5772E-08

TABLE 6

Fig. 12 shows an on-axis chromatic aberration curve of the optical imaging lens of example three, which represents the deviation of the convergent focus of light rays of different wavelengths after passing through the optical imaging lens. Fig. 13 shows a chromatic aberration of magnification curve of the optical imaging lens of example three, which represents the deviation of different image heights on the imaging plane after the light passes through the optical imaging lens. Fig. 14 shows astigmatism curves of the optical imaging lens of example three, which represent meridional field curvature and sagittal field curvature. Fig. 15 shows distortion curves of the optical imaging lens of example three, which represent distortion magnitude values corresponding to different angles of view.

As can be seen from fig. 12 to 15, the optical imaging lens according to the third example can achieve good imaging quality.

Example four

As shown in fig. 16 to 20, an optical imaging lens of example four of the present application is described. Fig. 16 shows a schematic diagram of an optical imaging lens structure of example four.

As shown in fig. 16, the optical imaging lens includes, in order from an object side to an image side: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, filter E6, and image plane S13.

The first lens element E1 has positive refractive power, and the object-side surface S1 and the image-side surface S2 of the first lens element are convex. The second lens element E2 has positive refractive power, and the object-side surface S3 and the image-side surface S4 of the second lens element are convex and concave, respectively. The third lens element E3 has positive refractive power, and the object-side surface S5 and the image-side surface S6 of the third lens element are concave and convex, respectively. The fourth lens element E4 has negative refractive power, and the object-side surface S7 of the fourth lens element is concave and the image-side surface S8 of the fourth lens element is convex. The fifth lens element E5 has positive refractive power, and the object-side surface S9 and the image-side surface S10 of the fifth lens element are convex and concave, respectively. Filter E6 has an object side surface S11 of the filter and an image side surface S12 of the filter. The light from the object sequentially passes through the respective surfaces S1 to S13 and is finally imaged on the imaging surface S13.

In this example, the total effective focal length f of the optical imaging lens is 2.35mm, the maximum half field angle Semi-FOV of the optical imaging lens is 54.23 °, the total length TTL of the optical imaging lens is 3.77mm, and the image height ImgH is 3.95mm.

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

TABLE 7

Table 8 shows the high-order term coefficients that can be used for each aspherical mirror surface in example four, wherein each aspherical mirror surface type can be defined by formula (1) given in example four above.

Flour mark

A4

A6

A8

A10

A12

A14

A16

S1

-9.5097E-02

-9.5500E+00

4.8641E+02

-1.5903E+04

3.4457E+05

-5.1527E+06

5.4594E+07

S2

-5.8136E-01

2.8221E+00

-5.5709E+01

8.4033E+02

-8.5794E+03

6.0370E+04

-2.9907E+05

S3

-5.0790E-01

1.7180E+00

-1.9047E+01

1.6128E+02

-9.6142E+02

4.1402E+03

-1.2963E+04

S4

-2.1640E-01

3.8070E-01

-4.3114E+00

4.2886E+01

-2.9957E+02

1.4609E+03

-5.0108E+03

S5

-9.7332E-02

-6.0212E-01

-6.6632E+00

1.2951E+02

-8.7768E+02

3.5463E+03

-9.6533E+03

S6

3.6780E+00

-3.5939E+01

1.9719E+02

-7.0767E+02

1.8064E+03

-3.4447E+03

5.0334E+03

S7

6.1411E+00

-4.5207E+01

2.2878E+02

-7.8619E+02

1.9191E+03

-3.4361E+03

4.5839E+03

S8

2.2642E+00

-9.9198E+00

3.1358E+01

-6.4479E+01

8.7203E+01

-7.8229E+01

4.4397E+01

S9

-3.0707E-01

-7.5381E-01

2.7292E+00

-4.9550E+00

5.9939E+00

-5.1103E+00

3.1147E+00

S10

-4.5246E-01

1.0654E-01

2.8834E-01

-5.6052E-01

5.9356E-01

-4.3748E-01

2.3478E-01

Flour mark

A18

A20

A22

A24

A26

A28

A30

S1

-4.1563E+08

2.2796E+09

-8.9214E+09

2.4279E+10

-4.3618E+10

4.6465E+10

-2.2212E+10

S2

1.0570E+06

-2.6730E+06

4.7932E+06

-5.9437E+06

4.8413E+06

-2.3283E+06

5.0066E+05

S3

2.9585E+04

-4.9035E+04

5.8223E+04

-4.8142E+04

2.6269E+04

-8.4878E+03

1.2280E+03

S4

1.2246E+04

-2.1449E+04

2.6735E+04

-2.3153E+04

1.3240E+04

-4.4941E+03

6.8568E+02

S5

1.8537E+04

-2.5494E+04

2.4982E+04

-1.7014E+04

7.6396E+03

-2.0294E+03

2.4114E+02

S6

-5.6724E+03

4.8767E+03

-3.0997E+03

1.3711E+03

-3.7666E+02

4.9518E+01

-6.9866E-01

S7

-4.5733E+03

3.3914E+03

-1.8382E+03

7.0547E+02

-1.8110E+02

2.7815E+01

-1.9277E+00

S8

-1.2199E+01

-2.6066E+00

4.0574E+00

-1.8340E+00

4.5090E-01

-6.0483E-02

3.4821E-03

S9

-1.3637E+00

4.2858E-01

-9.5792E-02

1.4864E-02

-1.5229E-03

9.2691E-05

-2.5399E-06

S10

-9.2284E-02

2.6397E-02

-5.4095E-03

7.7168E-04

-7.2641E-05

4.0517E-06

-1.0134E-07

TABLE 8

Fig. 17 shows an on-axis chromatic aberration curve of the optical imaging lens of example four, which represents the deviation of the convergent focus of light rays of different wavelengths after passing through the optical imaging lens. Fig. 18 shows a chromatic aberration of magnification curve of the optical imaging lens of example four, which represents the deviation of different image heights on the imaging plane after light passes through the optical imaging lens. Fig. 19 shows astigmatism curves of the optical imaging lens of example four, which represent meridional field curvature and sagittal field curvature. Fig. 20 shows distortion curves of the optical imaging lens of example four, which represent distortion magnitude values corresponding to different angles of view.

As can be seen from fig. 17 to 20, the optical imaging lens according to example four can achieve good imaging quality.

Example five

As shown in fig. 21 to 25, an optical imaging lens of example five of the present application is described. Fig. 21 shows a schematic diagram of an optical imaging lens structure of example five.

As shown in fig. 21, the optical imaging lens includes, in order from an object side to an image side: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, filter E6, and image plane S13.

The first lens element E1 has positive refractive power, and the object-side surface S1 and the image-side surface S2 of the first lens element are convex. The second lens element E2 has positive refractive power, and the object-side surface S3 and the image-side surface S4 of the second lens element are convex and concave, respectively. The third lens element E3 has positive refractive power, and the object-side surface S5 and the image-side surface S6 of the third lens element are concave and convex, respectively. The fourth lens element E4 has negative refractive power, and the object-side surface S7 of the fourth lens element is concave and the image-side surface S8 of the fourth lens element is convex. The fifth lens element E5 has positive refractive power, and the object-side surface S9 and the image-side surface S10 of the fifth lens element are convex and concave, respectively. Filter E6 has an object side surface S11 of the filter and an image side surface S12 of the filter. The light from the object passes through the respective surfaces S1 to S13 in order and is finally imaged on the imaging plane S13.

In this example, the total effective focal length f of the optical imaging lens is 2.27mm, the maximum half field angle Semi-FOV of the optical imaging lens is 57.37 °, the total length TTL of the optical imaging lens is 3.76mm, and the image height ImgH is 3.03mm.

Table 9 shows a basic structural parameter table of the optical imaging lens of example five, in which the units of the radius of curvature, thickness/distance, focal length, and effective radius are all millimeters (mm).

TABLE 9

Table 10 shows the high-order term coefficients that can be used for each aspherical mirror surface in example five, wherein each aspherical mirror surface type can be defined by formula (1) given in example five above.

TABLE 10

Fig. 22 shows on-axis chromatic aberration curves of the optical imaging lens of example five, which represent deviation of convergence focuses of light rays of different wavelengths after passing through the optical imaging lens. Fig. 23 shows a chromatic aberration of magnification curve of the optical imaging lens of example five, which represents deviations of different image heights on the imaging plane after light passes through the optical imaging lens. Fig. 24 shows astigmatism curves of the optical imaging lens of example five, which represent meridional field curvature and sagittal field curvature. Fig. 25 shows distortion curves of the optical imaging lens of example five, which represent distortion magnitude values corresponding to different angles of view.

As can be seen from fig. 22 to 25, the optical imaging lens according to example five can achieve good imaging quality.

Example six

As shown in fig. 26 to 30, an optical imaging lens of example six of the present application is described. Fig. 26 shows a schematic diagram of an optical imaging lens structure of example six.

As shown in fig. 26, the optical imaging lens, in order from an object side to an image side, comprises: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, filter E6, and image plane S13.

The first lens element E1 has positive refractive power, and the object-side surface S1 and the image-side surface S2 of the first lens element are convex. The second lens element E2 has positive refractive power, and the object-side surface S3 and the image-side surface S4 thereof are convex and concave, respectively. The third lens element E3 has positive refractive power, and the object-side surface S5 and the image-side surface S6 of the third lens element are concave and convex, respectively. The fourth lens element E4 has negative refractive power, and the object-side surface S7 of the fourth lens element is concave and the image-side surface S8 of the fourth lens element is convex. The fifth lens element E5 has negative refractive power, and the object-side surface S9 and the image-side surface S10 of the fifth lens element are convex and concave, respectively. Filter E6 has an object side surface S11 of the filter and an image side surface S12 of the filter. The light from the object passes through the respective surfaces S1 to S13 in order and is finally imaged on the imaging plane S13.

In this example, the total effective focal length f of the optical imaging lens is 2.45mm, the maximum half field angle Semi-FOV of the optical imaging lens is 51.69 °, the total length TTL of the optical imaging lens is 3.93mm, and the image height ImgH is 2.90mm.

Table 11 shows a basic structural parameter table of the optical imaging lens of example six, in which the units of the radius of curvature, thickness/distance, focal length, and effective radius are all millimeters (mm).

TABLE 11

Table 12 shows the high-order term coefficients that can be used for each aspherical mirror surface in example six, wherein each aspherical mirror surface type can be defined by formula (1) given in example six above.

Flour mark

A4

A6

A8

A10

A12

A14

A16

S1

-1.0634E-01

-6.1251E+00

2.4489E+02

-6.2418E+03

1.0458E+05

-1.1999E+06

9.6594E+06

S2

-5.2330E-01

2.9200E+00

-4.8143E+01

5.6530E+02

-4.5159E+03

2.5044E+04

-9.7894E+04

S3

-5.0263E-01

2.6062E+00

-3.1095E+01

2.7644E+02

-1.7532E+03

7.9845E+03

-2.6255E+04

S4

-1.4688E-01

-6.9096E-01

6.6816E+00

-3.6328E+01

1.3336E+02

-3.4959E+02

6.7970E+02

S5

1.4334E-01

-3.4373E+00

2.1792E+01

-9.6030E+01

3.4465E+02

-9.7092E+02

2.0293E+03

S6

6.4539E+00

-5.3268E+01

2.4088E+02

-6.8319E+02

1.2697E+03

-1.5401E+03

1.1536E+03

S7

7.9989E+00

-5.7385E+01

2.6638E+02

-8.3024E+02

1.8217E+03

-2.8985E+03

3.3899E+03

S8

1.9613E+00

-7.3029E+00

2.2763E+01

-5.0562E+01

7.8786E+01

-8.7895E+01

7.1095E+01

S9

-1.9731E-01

-8.8223E-01

2.9475E+00

-5.4016E+00

6.5932E+00

-5.6202E+00

3.4051E+00

S10

-4.7277E-01

1.5003E-01

2.6565E-01

-6.0375E-01

6.7665E-01

-5.0712E-01

2.7095E-01

Flour mark

A18

A20

A22

A24

A26

A28

A30

S1

-5.5095E+07

2.2166E+08

-6.1527E+08

1.1212E+09

-1.2067E+09

5.8112E+08

0.0000E+00

S2

2.7132E+05

-5.2994E+05

7.1311E+05

-6.2927E+05

3.2774E+05

-7.6339E+04

0.0000E+00

S3

6.2582E+04

-1.0785E+05

1.3267E+05

-1.1332E+05

6.3724E+04

-2.1172E+04

3.1434E+03

S4

-9.9472E+02

1.0874E+03

-8.6280E+02

4.6969E+02

-1.5686E+02

2.4179E+01

0.0000E+00

S5

-3.0335E+03

3.1583E+03

-2.2193E+03

9.9817E+02

-2.5838E+02

2.9167E+01

0.0000E+00

S6

-4.5630E+02

7.3942E+01

-7.4762E+01

1.1095E+02

-5.8222E+01

1.0620E+01

0.0000E+00

S7

-2.9168E+03

1.8250E+03

-8.0768E+02

2.3953E+02

-4.2676E+01

3.4503E+00

0.0000E+00

S8

-4.1700E+01

1.7517E+01

-5.1241E+00

9.8927E-01

-1.1312E-01

5.7956E-03

0.0000E+00

S9

-1.4781E+00

4.6025E-01

-1.0191E-01

1.5668E-02

-1.5910E-03

9.6005E-05

-2.6089E-06

S10

-1.0505E-01

2.9564E-02

-5.9645E-03

8.3921E-04

-7.8092E-05

4.3150E-06

-1.0712E-07

TABLE 12

Fig. 27 shows on-axis chromatic aberration curves of the optical imaging lens of example six, which represent the deviation of the convergence focus of light rays of different wavelengths after passing through the optical imaging lens. Fig. 28 shows a chromatic aberration of magnification curve of the optical imaging lens of example six, which represents deviations of different image heights on the imaging plane after light passes through the optical imaging lens. Fig. 29 shows astigmatism curves of the optical imaging lens of example six, which represent meridional field curvature and sagittal field curvature. Fig. 30 shows distortion curves of the optical imaging lens of example six, which represent distortion magnitude values corresponding to different angles of view.

As can be seen from fig. 27 to 30, the optical imaging lens according to the sixth example can achieve good imaging quality.

To sum up, examples one to six satisfy the relationships shown in table 13, respectively.

Conditions/examples	1	2	3	4	5	6
							TTL/ImgH	1.31	1.37	1.35	0.95	1.24	1.36
SD/ImgH	0.94	1.00	0.97	0.66	0.87	0.94
							f*TAN(Semi-FOV)/TD	1.19	1.09	1.17	1.26	1.35	1.15
f1/f	1.97	2.02	2.17	2.10	2.14	1.91
							f/(f3+f4)	-2.04	-2.06	-2.37	-3.10	-2.98	-2.87
f1234/f2345	0.48	0.47	0.52	0.83	0.87	0.66
							(R9-R10)/(R9+R10)	0.29	0.33	0.29	0.06	0.05	0.11
f4/(R7+R8)	2.45	3.27	3.12	1.35	1.35	1.36
							∑AT/BFL	0.66	0.70	0.63	0.49	0.47	0.47
(∑AT+BFL)/∑CT	0.95	0.91	0.90	0.87	0.82	0.86
							\|CT1-CT2\|/T12	0.67	0.53	0.59	0.72	0.69	0.58
(CT3+CT4)/(CT4+CT5)	0.93	0.92	0.91	1.03	1.02	1.07
							T23/∑AT	0.36	0.42	0.39	0.42	0.41	0.43
DT32/DT52	0.43	0.44	0.44	0.44	0.43	0.46
							(DT32-DT11)/SR	0.97	1.00	0.98	1.04	1.05	0.95

Table 13 table 14 shows effective focal lengths f of the optical imaging lenses of example one to example six, and effective focal lengths f1 to f5 of the respective lenses.

Example parameters	1	2	3	4	5	6
							f1(mm)	4.89	4.99	5.19	4.93	4.85	4.67
f2(mm)	4.55	4.19	3.96	117.03	120.82	852.47
							f3(mm)	-3.33	-3.22	-3.05	1.79	1.78	1.44
f4(mm)	2.11	2.02	2.05	-2.55	-2.54	-2.30
							f5(mm)	-3.39	-2.99	-3.41	11.52	10.09	-377.68
f(mm)	2.48	2.48	2.39	2.35	2.27	2.45
							TTL(mm)	3.97	3.96	3.91	3.77	3.76	3.93
ImgH(mm)	3.04	2.88	2.90	3.95	3.03	2.90
							Semi-FOV(°)	53.25	51.30	53.64	54.23	57.37	51.69

TABLE 14

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

It is to be understood that the above-described embodiments are only a few, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise, and it should be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of features, steps, operations, devices, components, and/or combinations thereof.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An optical imaging lens is characterized in that the optical imaging lens is a five-lens, and the optical imaging lens sequentially comprises, from an object side to an image side of the optical imaging lens:

the lens comprises a first lens, a second lens and a third lens, wherein the first lens has positive focal power, and the image side surface of the first lens is a convex surface;

a second lens having a positive optical power;

a third lens;

a fourth lens;

a fifth lens;

the on-axis distance TTL from the object side surface of the first lens to the imaging surface of the optical imaging lens and the half ImgH of the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens satisfy the following condition: 0.9 and then all of TTL/ImgH is less than 1.4;

the maximum half field angle Semi-FOV of the optical imaging lens meets the following requirements: 50 ° < Semi-FOV <60 °;

the effective focal length f of the optical imaging lens, the on-axis distance TD between the object side surface of the first lens and the image side surface of the fifth lens and the maximum half field angle Semi-FOV of the optical imaging lens meet the conditions that 1 is less than f times TAN (Semi-FOV)/TD <1.4.

2. The optical imaging lens of claim 1, wherein a distance SD from a diaphragm of the optical imaging lens to an image side surface of the fifth lens and a half ImgH of a diagonal length of an effective pixel area on an imaging surface of the optical imaging lens satisfy: 0.6 sD/ImgH <1.1.

3. The optical imaging lens according to claim 1, wherein an effective focal length f of the optical imaging lens and an effective focal length f1 of the first lens satisfy: 1.9 and < -f 1/f <2.3.

4. The optical imaging lens of claim 1, wherein the effective focal length f of the optical imaging lens, the effective focal length f3 of the third lens and the effective focal length f4 of the fourth lens satisfy: -3.5 and < -f/(f 3+ f 4) < -2.

5. An optical imaging lens according to claim 1, wherein a combined focal length f1234 of the first lens, the second lens, the third lens and the fourth lens and a combined focal length f2345 of the second lens, the third lens, the fourth lens and the fifth lens satisfy: 0.4 sP 1234/f2345<1.

6. The optical imaging lens according to claim 1, wherein 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: 0< (R9-R10)/(R9 + R10) <0.4.

7. The optical imaging lens of claim 1, wherein the effective focal length f4 of the fourth lens, the radius of curvature R7 of the object side surface of the fourth lens, and the radius of curvature R8 of the image side surface of the fourth lens satisfy: 1< -f4/(R7 + R8) <3.5.

8. The optical imaging lens of claim 1, wherein an on-axis distance BFL from an image-side surface of the fifth lens to an imaging surface of the optical imaging lens and a sum Σ AT of an air interval on an optical axis of the optical imaging lens between any adjacent two of the first lens to the fifth lens satisfy: 0.4< ∑ AT/BFL <0.8.

9. The optical imaging lens according to claim 1, wherein a sum Σ AT of air spaces on an optical axis of the optical imaging lens between any two adjacent ones of the first to fifth lenses, a sum Σ CT of thicknesses on the optical axis of the optical imaging lens of the first to fifth lenses, respectively, and an on-axis distance BFL from an image side surface of the fifth lens to an imaging surface of the optical imaging lens satisfy: 0.8< (∑ AT + BFL)/. Σ CT <1.

10. The optical imaging lens of claim 1, wherein a thickness CT1 of the first lens on an optical axis of the optical imaging lens, a thickness CT2 of the second lens on the optical axis of the optical imaging lens, and an air interval T12 of the first lens and the second lens on the optical axis satisfy: 0.5< | CT1-CT2|/T12<0.8.

11. The optical imaging lens of claim 1, wherein a thickness CT3 of the third lens on an optical axis of the optical imaging lens, a thickness CT4 of the fourth lens on the optical axis, and a thickness CT5 of the fifth lens on the optical axis satisfy: 0.9< (CT 3+ CT 4)/(CT 4+ CT 5) <1.1.

12. The optical imaging lens of claim 1, wherein an air interval T23 of the second lens and the third lens on the optical axis of the optical imaging lens and a sum Σ AT of air intervals on the optical axis of the optical imaging lens between any adjacent two of the first lens to the fifth lens satisfy: 0.35 T23/sigma AT <0.45.

13. The optical imaging lens of claim 1, wherein the maximum effective radius DT32 of the image side surface of the third lens and the maximum effective radius DT52 of the image side surface of the fifth lens satisfy: 0.4-woven DT32/DT52<0.5.

14. The optical imaging lens of claim 1, wherein the maximum effective radius DT11 of the object side surface of the first lens, the maximum effective radius DT32 of the image side surface of the third lens, and the maximum effective radius SR of the diaphragm of the optical imaging lens satisfy: 0.9< (DT 32-DT 11)/SR <1.1.

15. An optical imaging lens is characterized in that the optical imaging lens is a five-lens, and the optical imaging lens sequentially comprises, from an object side to an image side of the optical imaging lens:

a second lens having a positive optical power;

a third lens;

a fourth lens;

a fifth lens;

wherein the effective focal length f of the optical imaging lens, the on-axis distance TD from the object side surface of the first lens to the image side surface of the fifth lens and the maximum half field angle Semi-FOV of the optical imaging lens meet the conditions that 1 is formed by the sum of f and TAN (Semi-FOV)/TD <1.4;

the maximum half field angle Semi-FOV of the optical imaging lens meets the following requirements: 50 ° < Semi-FOV <60 °.

16. The optical imaging lens of claim 15, wherein a distance SD from a diaphragm of the optical imaging lens to an image side surface of the fifth lens and a half ImgH of a diagonal length of an effective pixel area on an imaging surface of the optical imaging lens satisfy: 0.6< -SD/ImgH <1.1.

17. The optical imaging lens of claim 15, wherein the effective focal length f of the optical imaging lens and the effective focal length f1 of the first lens satisfy: 1.9 were woven so as to have f1/f <2.3.

18. The optical imaging lens of claim 15, wherein the effective focal length f of the optical imaging lens, the effective focal length f3 of the third lens, and the effective focal length f4 of the fourth lens satisfy: -3.5 and < -f/(f 3+ f 4) < -2.

19. An optical imaging lens according to claim 15, wherein a combined focal length f1234 of the first lens, the second lens, the third lens and the fourth lens and a combined focal length f2345 of the second lens, the third lens, the fourth lens and the fifth lens satisfy: 0.4 sP 1234/f2345<1.

20. The optical imaging lens of claim 15, wherein 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: 0< (R9-R10)/(R9 + R10) <0.4.

21. The optical imaging lens of claim 15, wherein the effective focal length f4 of the fourth lens, the radius of curvature R7 of the object side surface of the fourth lens, and the radius of curvature R8 of the image side surface of the fourth lens satisfy: 1 were woven so as to be f4/(R7 + R8) <3.5.

22. The optical imaging lens of claim 15, wherein an on-axis distance BFL from an image-side surface of the fifth lens to an image-side surface of the optical imaging lens and a sum Σ AT of air intervals on an optical axis of the optical imaging lens between any two adjacent lenses among the first lens to the fifth lens satisfy: 0.4< ∑ AT/BFL <0.8.

23. The optical imaging lens of claim 15, wherein a sum Σ AT of air spaces on an optical axis of the optical imaging lens between any two adjacent lenses among the first to fifth lenses, a sum Σ CT of thicknesses of the first to fifth lenses on the optical axis of the optical imaging lens, respectively, and an on-axis distance BFL from an image-side surface of the fifth lens to an imaging surface of the optical imaging lens satisfy: 0.8< (∑ AT + BFL)/. Σ CT <1.

24. The optical imaging lens of claim 15, wherein a thickness CT1 of the first lens on an optical axis of the optical imaging lens, a thickness CT2 of the second lens on the optical axis of the optical imaging lens, and an air interval T12 of the first lens and the second lens on the optical axis satisfy: 0.5< | CT1-CT2|/T12<0.8.

25. The optical imaging lens of claim 15, wherein a thickness CT3 of the third lens on an optical axis of the optical imaging lens, a thickness CT4 of the fourth lens on the optical axis, and a thickness CT5 of the fifth lens on the optical axis satisfy: 0.9< (CT 3+ CT 4)/(CT 4+ CT 5) <1.1.

26. The optical imaging lens of claim 15, wherein an air interval T23 of the second lens and the third lens on the optical axis of the optical imaging lens and a sum Σ AT of air intervals on the optical axis of the optical imaging lens between any adjacent two of the first lens to the fifth lens satisfy: 0.35 T23/sigma AT <0.45.

27. The optical imaging lens of claim 15, wherein the maximum effective radius DT32 of the image side surface of the third lens and the maximum effective radius DT52 of the image side surface of the fifth lens satisfy: 0.4-woven DT32/DT52<0.5.

28. The optical imaging lens of claim 15, wherein the maximum effective radius DT11 of the object side surface of the first lens, the maximum effective radius DT32 of the image side surface of the third lens, and the maximum effective radius SR of the stop of the optical imaging lens satisfy: 0.9< (DT 32-DT 11)/SR <1.1.