CN111505802A - Optical imaging lens - Google Patents

Abstract

The application discloses an optical imaging lens, which sequentially comprises from an object side to an image side along an optical axis: a first lens having a refractive power, an object side surface of which is concave; a second lens having a positive optical power; a third lens with negative focal power, wherein the object side surface of the third lens is a convex surface; a fourth lens having an optical power; and a fifth lens having a refractive power, an object side surface of which is concave; half of the Semi-FOV of the maximum field angle of the optical imaging lens satisfies: Semi-FOV is more than or equal to 60 degrees; and the half of the diagonal length ImgH of the effective pixel area on the imaging surface of the optical imaging lens, the effective focal length f2 of the second lens, and the effective focal length f5 of the fifth lens satisfy: 0 < ImgH/(f2+ f5) < 5.0.

Description

Optical imaging lens

technical field

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

Background technique

Many photographers are often limited by the angle of view of the lens when shooting large-scale scenery, such as tall mountain scenery, wide buildings, large parades, and all indoor exhibits, which makes the camera lens unable to Take pictures of large areas. The angle of view of most camera lenses on the market is not enough to meet the needs of photographers to capture large-scale scenes.

Therefore, in order to meet the needs of more photography enthusiasts for shooting large-area scenes, there is an urgent need in the market for an optical imaging lens that can take into account both high imaging quality and a large field of view.

SUMMARY OF THE INVENTION

One aspect of the present application provides such an optical imaging lens, the optical imaging lens sequentially includes from the object side to the image side along the optical axis: a first lens with optical power, the object side of which is concave; The second lens with negative power; the third lens with negative refractive power, whose object side is convex; the fourth lens with power; and the fifth lens with power, whose object side is concave. Semi-FOV which is half of the maximum field of view of the optical imaging lens can satisfy: Semi-FOV≥60°; and half the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens ImgH, the effective focal length of the second lens f2 And the effective focal length f5 of the fifth lens may satisfy: 0<ImgH/(f2+f5)<5.0.

In one embodiment, there is at least one aspherical mirror surface from the object side of the first lens to the image side of the fifth lens.

In one embodiment, the curvature radius R9 of the object side surface of the fifth lens and the effective focal length f3 of the third lens may satisfy: 3.5<R9/f3<6.0.

In one embodiment, the center thickness CT5 of the fifth lens on the optical axis and the separation distance T45 of the fourth lens and the fifth lens on the optical axis may satisfy: 1.0<CT5/T45<3.5.

In one embodiment, the edge thickness ET4 of the fourth lens and the center thickness CT4 of the fourth lens on the optical axis may satisfy: 0<ET4/CT4<0.5.

In one embodiment, the curvature radius R4 of the image side surface of the second lens and the curvature radius R8 of the image side surface of the fourth lens may satisfy: 1.0<R4/R8<3.0.

In one embodiment, the radius of curvature R1 of the object side surface of the first lens and the combined focal length f12 of the first lens and the second lens may satisfy: -4.5<R1/f12<-1.0.

In one embodiment, the combined focal length f123 of the first lens, the second lens and the third lens and the total effective focal length f of the optical imaging lens may satisfy: 1.5<f123/f<3.0.

In one embodiment, the distance SAG32 from the intersection of the image side surface and the optical axis of the third lens to the vertex of the effective radius of the image side surface of the third lens on the optical axis and the intersection of the image side surface and the optical axis of the fourth lens to the fourth lens The distance SAG42 of the effective radius vertex of the image side on the optical axis can satisfy: -9.5<SAG42/SAG32<-3.5.

In one embodiment, the combined focal length f45 of the fourth lens and the fifth lens, the separation distance T34 between the third lens and the fourth lens on the optical axis, and the separation distance T45 between the fourth lens and the fifth lens on the optical axis may be Satisfaction: 4.0<f45/(T34+T45)<7.5.

Another aspect of the present application provides an optical imaging lens, the optical imaging lens includes sequentially from an object side to an image side along an optical axis: a first lens with optical power, the object side of which is concave; The second lens with negative power; the third lens with negative refractive power, whose object side is convex; the fourth lens with power; and the fifth lens with power, whose object side is concave. Semi-FOV, which is half of the maximum field of view of the optical imaging lens, can satisfy: Semi-FOV≥60°; and the combined focal length of the fourth lens and the fifth lens f45, and the separation distance between the third lens and the fourth lens on the optical axis T34 and the separation distance T45 of the fourth lens and the fifth lens on the optical axis may satisfy: 4.0<f45/(T34+T45)<7.5.

The present application provides an optical imaging that can be applied to portable electronic products and has at least one of large field of view, miniaturization, high resolution and good imaging quality by reasonably allocating optical power and optimizing optical parameters. lens.

Description of drawings

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

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

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

3 shows a schematic structural diagram of an optical imaging lens according to Embodiment 2 of the present application;

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

5 shows a schematic structural diagram of an optical imaging lens according to Embodiment 3 of the present application;

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

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

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

FIG. 9 shows a schematic structural diagram of an optical imaging lens according to Embodiment 5 of the present application;

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

FIG. 11 shows a schematic structural diagram of an optical imaging lens according to Embodiment 6 of the present application; and

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

Detailed ways

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 descriptions are merely illustrative of exemplary embodiments of the present application and are not intended to limit the scope of the present application in any way. Throughout the specification, the same reference numerals refer to the same elements. The expression "and/or" includes any and all combinations of one or more of the associated listed items.

It should be noted that in this specification, the expressions first, second, third etc. are only used to distinguish one feature from another feature and do not imply any limitation on the feature. Accordingly, the 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 shapes shown in the figures are 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 drawings are examples only and are not drawn strictly to scale.

Herein, the paraxial region refers to the 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 at least in the paraxial region. Concave. The surface of each lens closest to the object is called the object side of the lens, and the surface of each lens closest to the imaging surface is called the image side of the lens.

It will also be understood that the terms "comprising", "comprising", "having", "comprising" and/or "comprising" when used in this specification mean that the stated features, elements and/or components are present , but does not preclude the presence or addition of one or more other features, elements, components and/or combinations thereof. Furthermore, when an expression such as "at least one of" appears after a list of listed features, it modifies the entire listed feature and not the individual elements of the list. Furthermore, when describing embodiments of the present application, the 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 should also be understood that terms (such as those defined in commonly used dictionaries) should be interpreted to have meanings consistent with their meanings in the context of the related art, and will not be interpreted in an idealized or overly formal sense unless It is expressly so limited herein.

It should be noted that the embodiments in the present application and the features of the embodiments may be combined with each other in the case of no conflict. The present application will be described in detail below with reference to the accompanying drawings and in conjunction with the 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 five lenses having optical power, which are a first lens, a second lens, a third lens, a fourth lens, and a fifth lens, respectively. The five lenses are arranged in sequence from the object side to the image side along the optical axis. Any two adjacent lenses among the first lens to the fifth lens may have a separation distance.

In exemplary embodiments, the first lens may have positive power or negative power, and its object side may be concave; the second lens may have positive power; and the third lens may have negative power, and its object side The fourth lens may have positive or negative power; and the fifth lens may have positive or negative power, and its object side may be concave.

In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: Semi-FOV≧60°, where Semi-FOV is half of the maximum field angle of the optical imaging lens. Satisfying the Semi-FOV≥60° can make the field of view wide, which is beneficial to achieve a larger clear range.

In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 0<ImgH/(f2+f5)<5.0, where ImgH is half of the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens , f2 is the effective focal length of the second lens, and f5 is the effective focal length of the fifth lens. More specifically, ImgH, f2 and f5 may further satisfy: 0<ImgH/(f2+f5)<4.8. Satisfying 0<ImgH/(f2+f5)<5.0, the aberration of the system can be effectively improved.

In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 3.5<R9/f3<6.0, where R9 is the curvature radius of the object side surface of the fifth lens, and f3 is the effective focal length of the third lens. More specifically, R9 and f3 may further satisfy: 3.9<R9/f3<6.0. Satisfying 3.5<R9/f3<6.0, the aberration of the system can be effectively improved.

In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 1.0<CT5/T45<3.5, wherein CT5 is the central thickness of the fifth lens on the optical axis, and T45 is the thickness of the fourth lens and the fifth lens in the The separation distance on the optical axis. More specifically, CT5 and T45 may further satisfy: 1.2<CT5/T45<3.5. Satisfying 1.0<CT5/T45<3.5 can reduce the processing difficulty and at the same time make the optical imaging lens have a better ability to balance chromatic aberration and distortion.

In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 0<ET4/CT4<0.5, where ET4 is the edge thickness of the fourth lens, and CT4 is the center thickness of the fourth lens on the optical axis. More specifically, ET4 and CT4 may further satisfy: 0.1<ET4/CT4<0.3. Satisfying 0<ET4/CT4<0.5 can reduce the difficulty of processing and at the same time make the optical imaging lens assembly have higher stability.

In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 1.0<R4/R8<3.0, wherein R4 is the radius of curvature of the image side of the second lens, and R8 is the radius of curvature of the image side of the fourth lens . More specifically, R4 and R8 may further satisfy: 1.2<R4/R8<2.8. Satisfying 1.0<R4/R8<3.0 can effectively balance the axial aberration generated by the optical imaging lens.

In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: -4.5<R1/f12<-1.0, wherein R1 is the curvature radius of the object side of the first lens, and f12 is the first lens and the second lens combined focal length. More specifically, R1 and f12 may further satisfy: -4.4<R1/f12<-1.1. Satisfying -4.5<R1/f12<-1.0 is beneficial to the optical imaging lens to better balance the aberrations and at the same time to improve the resolution of the system.

In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 1.5<f123/f<3.0, where f123 is the combined focal length of the first lens, the second lens and the third lens, and f is the focal length of the optical imaging lens total effective focal length. More specifically, f123 and f may further satisfy: 1.6<f123/f<2.8. Satisfying 1.5<f123/f<3.0 is beneficial to improve the field of view of the optical imaging lens.

In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: -9.5<SAG42/SAG32<-3.5, wherein SAG32 is the effective point of intersection of the image side surface and the optical axis of the third lens to the image side surface of the third lens The distance of the radius vertex on the optical axis, SAG42 is the distance from the intersection of the image side surface of the fourth lens and the optical axis to the effective radius vertex of the image side surface of the fourth lens on the optical axis. More specifically, SAG42 and SAG32 may further satisfy: -9.5<SAG42/SAG32<-3.8. Satisfying -9.5<SAG42/SAG32<-3.5, the deflection angle of the chief ray can be reasonably controlled, the matching degree with the chip can be improved, and the structure of the optical imaging lens can be adjusted.

In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 4.0<f45/(T34+T45)<7.5, where f45 is the combined focal length of the fourth lens and the fifth lens, T34 is the third lens and The spacing distance of the fourth lens on the optical axis, T45 is the spacing distance between the fourth lens and the fifth lens on the optical axis. More specifically, f45, T34 and T45 may further satisfy: 4.0<f45/(T34+T45)<7.3. Satisfying 4.0<f45/(T34+T45)<7.5 can ensure that the optical imaging lens has good processability.

In an exemplary embodiment, the optical imaging lens according to the present application further includes a diaphragm disposed between the first lens and the second lens. Optionally, the above-mentioned optical imaging lens may further include a filter for correcting color deviation and/or a protective glass for protecting the photosensitive element located on the imaging surface. The present application proposes an optical imaging lens with characteristics such as miniaturization, ultra-wide angle, and high imaging quality. Optionally, the optical imaging lens proposed in the present application can be a wide-angle lens, and its focal length can be smaller than a standard lens, and its angle of view can be larger than that of the standard lens; The optical imaging lens according to the above-mentioned embodiments of the present application may employ multiple lenses, such as the above five lenses. By rationally distributing the focal power, surface shape, central thickness of each lens, and on-axis distance between each lens, etc., the incident light can be effectively converged, the overall optical length of the imaging lens can be reduced, and the machinability of the imaging lens can be improved. , making the optical imaging lens more conducive to production and processing.

In the embodiments of the present application, at least one of the mirror surfaces of each lens is an aspheric mirror surface, that is, at least one mirror surface from the object side of the first lens to the image side of the fifth lens is an aspheric mirror surface. The characteristic of aspheric lenses is that the curvature changes continuously from the center of the lens to the periphery of the lens. Unlike spherical lenses, which have a constant curvature from the center of the lens to the periphery of the lens, aspheric lenses have better curvature radius characteristics, and have the advantages of improving distortion and astigmatism. After the aspherical lens is used, the aberration that occurs during imaging can be eliminated as much as possible, thereby improving the imaging quality. Optionally, at least one of the object side and the image side of each of the first lens, the second lens, the third lens, the fourth lens and the fifth lens is an aspherical mirror surface. Optionally, the object side and the image side of each of the first lens, the second lens, the third lens, the fourth lens and the fifth lens are aspherical mirror surfaces.

However, those skilled in the art should understand that, without departing from the technical solutions claimed in the present application, the number of lenses constituting the optical imaging lens can be changed to obtain various results and advantages described in this specification. For example, although five lenses are described as an example in the embodiment, the optical imaging lens is not limited to include five lenses. If desired, the optical imaging lens may also include other numbers of lenses.

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

Example 1

The following describes the optical imaging lens according to Embodiment 1 of the present application with reference to FIGS. 1 to 2D . FIG. 1 shows a schematic structural diagram of an optical imaging lens according to Embodiment 1 of the present application.

As shown in FIG. 1, the optical imaging lens sequentially includes from the object side to the image side: a first lens E1, a diaphragm STO, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter Sheet E6 and imaging plane S13.

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

Table 1 shows the basic parameter table of the optical imaging lens of Example 1, wherein the units of curvature radius, thickness/distance and focal length are all millimeters (mm).

Table 1

In this example, the total effective focal length f of the optical imaging lens is 2.12mm, and the total length of the optical imaging lens TTL (that is, the distance from the object side S1 of the first lens E1 to the imaging surface S13 of the optical imaging lens on the optical axis ) is 5.85mm, half of the diagonal length of the effective pixel area on the imaging surface S13 of the optical imaging lens ImgH is 3.63mm, half of the maximum field of view of the optical imaging lens Semi-FOV is 63.5°, the aperture of the optical imaging lens The value Fno is 2.27.

In Embodiment 1, the object side and the image side of any one of the first lens E1 to the fifth lens E5 are aspherical, and the surface type x of each aspherical lens can be defined by, but not limited to, the following aspherical formula :

Among them, x is the distance vector height of the aspheric surface from the vertex of the aspheric surface when the height is h along the optical axis; c is the paraxial curvature of the aspheric surface, c=1/R (that is, the paraxial curvature c is the above table 1 is the reciprocal of the radius of curvature R); k is the conic coefficient; Ai is the correction coefficient of the i-th order of the aspheric surface. Tables 2-1 and 2-2 below show the higher order coefficients A ₄ , A ₆ , A ₈ , A ₁₀ , A ₁₂ , A ₁₄ , A ₁₆ that can be used for each of the aspheric mirror surfaces S1 to S10 in Example 1 , A ₁₈ , A ₂₀ , A ₂₂ , A ₂₄ , A ₂₆ , A ₂₈ and A ₃₀ .

face number A4 A6 A8 A10 A12 A14 A16 S1 2.1730E-01 -3.2919E-01 6.5161E-01 -1.0543E+00 1.2562E+00 -1.0737E+00 6.5621E-01 S2 2.8465E-01 5.7454E-01 -1.2109E+01 9.9178E+01 -4.9748E+02 1.6776E+03 -3.9488E+03 S3 -5.1489E-02 1.7599E+00 -4.1215E+01 5.8026E+02 -5.6093E+03 3.8817E+04 -1.9551E+05 S4 -3.1623E-01 1.3505E+00 -4.1075E+00 -2.8169E+00 1.3423E+02 -8.8676E+02 3.3966E+03 S5 2.4741E-02 -8.7187E-01 4.1705E+00 -1.3832E+01 3.5169E+01 -6.8425E+01 1.0017E+02 S6 -1.7320E-01 4.0182E-01 -1.0411E+00 2.4075E+00 -4.0430E+00 4.7791E+00 -4.0359E+00 S7 -3.8732E-02 1.6912E-01 -4.3580E-01 8.3452E-01 -1.1690E+00 1.1912E+00 -8.8523E-01 S8 7.1021E-01 -1.8366E+00 3.1808E+00 -4.0293E+00 3.8728E+00 -2.8599E+00 1.6217E+00 S9 5.4391E-01 -1.3772E+00 1.6387E+00 -1.2163E+00 6.0038E-01 -2.0119E-01 4.5309E-02 S10 -1.1770E-01 -1.7760E-01 2.4616E-01 -1.5535E-01 6.0824E-02 -1.6121E-02 3.0059E-03

table 2-1

face number A18 A20 A22 A24 A26 A28 A30 S1 -2.8652E-01 8.8933E-02 -1.9375E-02 2.8871E-03 -2.7971E-04 1.5859E-05 -3.9909E-07 S2 6.5950E+03 -7.8236E+03 6.4993E+03 -3.6532E+03 1.2987E+03 -2.5443E+02 1.9331E+01 S3 7.1852E+05 -1.9140E+06 3.6380E+06 -4.7917E+06 4.1447E+06 -2.1137E+06 4.8085E+05 S4 -8.6839E+03 1.5411E+04 -1.9075E+04 1.6162E+04 -8.9346E+03 2.9021E+03 -4.1991E+02 S5 -1.0932E+02 8.8243E+01 -5.1907E+01 2.1605E+01 -6.0170E+00 1.0031E+00 -7.5448E-02 S6 2.4682E+00 -1.0967E+00 3.5076E-01 -7.8688E-02 1.1748E-02 -1.0478E-03 4.2211E-05 S7 4.8050E-01 -1.8963E-01 5.3645E-02 -1.0573E-02 1.3756E-03 -1.0603E-04 3.6608E-06 S8 -6.9999E-01 2.2650E-01 -5.3681E-02 8.9939E-03 -1.0047E-03 6.6950E-05 -2.0092E-06 S9 -6.4913E-03 4.7953E-04 8.0648E-06 -5.5321E-06 5.4015E-07 -2.4348E-08 4.4198E-10 S10 -4.0129E-04 3.8507E-05 -2.6323E-06 1.2501E-07 -3.9180E-09 7.2847E-11 -6.0844E-13

Table 2-2

FIG. 2A shows the on-axis chromatic aberration curve of the optical imaging lens of Embodiment 1, which represents the deviation of the focusing point of light of different wavelengths after passing through the lens. FIG. 2B shows the astigmatism curve of the optical imaging lens of Embodiment 1, which represents the meridional curvature of the image plane and the sagittal curvature of the image plane. FIG. 2C shows a distortion curve of the optical imaging lens of Example 1, which represents the distortion magnitude values corresponding to different image heights. FIG. 2D shows the magnification chromatic aberration curve of the optical imaging lens of Example 1, which represents the deviation of different image heights on the imaging plane after light passes through the lens. It can be seen from FIGS. 2A to 2D that the optical imaging lens provided in Embodiment 1 can achieve good imaging quality.

Example 2

The following describes the optical imaging lens according to Embodiment 2 of the present application with reference to FIGS. 3 to 4D . In this embodiment and the following embodiments, descriptions similar to those in Embodiment 1 will be omitted for the sake of 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 , the optical imaging lens sequentially includes from the object side to the image side: a first lens E1, a diaphragm STO, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter Sheet E6 and imaging plane S13.

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

In this example, the total effective focal length f of the optical imaging lens is 2.15mm, the total length TTL of the optical imaging lens is 5.30mm, and the half of the diagonal length ImgH of the effective pixel area on the imaging surface S13 of the optical imaging lens is 3.63mm , the Semi-FOV of half the maximum field of view of the optical imaging lens is 61.1°, and the aperture value Fno of the optical imaging lens is 2.27.

Table 3 shows the basic parameter table of the optical imaging lens of Example 2, wherein the units of curvature radius, thickness/distance and focal length are all millimeters (mm). Tables 4-1 and 4-2 show the coefficients of higher-order terms that can be used for each aspherical mirror surface in Embodiment 2, wherein each aspherical surface type can be defined by the formula (1) given in Embodiment 1 above.

table 3

Table 4-1

face number A18 A20 A22 A24 A26 A28 A30 S1 1.4365E+00 -5.9615E-01 1.7689E-01 -3.6465E-02 4.9446E-03 -3.9515E-04 1.4041E-05 S2 -2.8117E+03 2.7414E+03 -1.9232E+03 9.4498E+02 -3.0846E+02 6.0046E+01 -5.2727E+00 S3 2.2466E+06 3.0600E+07 -2.0639E+08 6.5940E+08 -1.2120E+09 1.2319E+09 -5.3911E+08 S4 4.3285E+04 -6.2078E+04 6.5731E+04 -4.9729E+04 2.5371E+04 -7.8052E+03 1.0922E+03 S5 3.9803E+03 -3.5525E+03 2.2044E+03 -9.0287E+02 2.1899E+02 -2.3586E+01 -9.1380E-02 S6 5.0272E+01 -3.1877E+01 1.5031E+01 -5.1385E+00 1.2097E+00 -1.7605E-01 1.1960E-02 S7 -1.7211E+02 1.2018E+02 -6.0570E+01 2.1448E+01 -5.0573E+00 7.1229E-01 -4.5290E-02 S8 -3.0752E+01 2.1944E+01 -1.0576E+01 3.4140E+00 -7.0813E-01 8.5359E-02 -4.5471E-03 S9 -2.0874E+01 1.0158E+01 -3.4889E+00 8.2768E-01 -1.2906E-01 1.1901E-02 -4.9166E-04 S10 2.5365E-01 -5.6351E-02 9.1128E-03 -1.0426E-03 7.9938E-05 -3.6823E-06 7.6994E-08

Table 4-2

FIG. 4A shows the on-axis chromatic aberration curve of the optical imaging lens of Embodiment 2, which represents the deviation of the focusing point of light of different wavelengths after passing through the lens. FIG. 4B shows the astigmatism curve of the optical imaging lens of Embodiment 2, which represents the meridional curvature of the image plane and the sagittal image plane curvature. FIG. 4C shows a distortion curve of the optical imaging lens of Example 2, which represents the distortion magnitude values corresponding to different image heights. FIG. 4D shows the magnification chromatic aberration curve of the optical imaging lens of Example 2, which represents the deviation of different image heights on the imaging plane after light passes through the lens. It can be seen from FIG. 4A to FIG. 4D that the optical imaging lens provided in Embodiment 2 can achieve good imaging quality.

Example 3

The optical imaging lens according to Embodiment 3 of the present application is described below with reference to FIGS. 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 , the optical imaging lens sequentially includes from the object side to the image side: a first lens E1, a diaphragm STO, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter Sheet E6 and imaging plane S13.

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

In this example, the total effective focal length f of the optical imaging lens is 1.84mm, the total length TTL of the optical imaging lens is 5.85mm, and the half of the diagonal length of the effective pixel area on the imaging surface S13 of the optical imaging lens ImgH is 3.63mm , the Semi-FOV of the half of the maximum field of view of the optical imaging lens is 62.2°, and the aperture value Fno of the optical imaging lens is 2.28.

Table 5 shows the basic parameter table of the optical imaging lens of Example 3, wherein the units of curvature radius, thickness/distance and focal length are all millimeters (mm). Tables 6-1 and 6-2 show the coefficients of higher-order terms that can be used for each aspherical mirror surface in Example 3, wherein each aspherical surface type can be defined by the formula (1) given in Example 1 above.

table 5

Table 6-1

face number A18 A20 A22 A24 A26 A28 A30 S1 -5.7329E-01 2.2941E-01 -6.2128E-02 1.1236E-02 -1.3001E-03 8.7067E-05 -2.5676E-06 S2 -2.6854E+04 2.6048E+04 -1.4591E+04 2.1053E+03 2.8255E+03 -1.8442E+03 3.6346E+02 S3 1.8091E+07 -6.0971E+07 1.4680E+08 -2.4615E+08 2.7290E+08 -1.7965E+08 5.3119E+07 S4 -1.1402E+04 1.3812E+04 -1.2013E+04 7.3067E+03 -2.9518E+03 7.1247E+02 -7.7937E+01 S5 -5.3495E+02 4.0340E+02 -2.1551E+02 7.9351E+01 -1.9106E+01 2.7023E+00 -1.6989E-01 S6 -2.2045E+01 1.1680E+01 -4.4225E+00 1.1627E+00 -2.0116E-01 2.0565E-02 -9.4018E-04 S7 -6.8249E-01 2.1121E-01 -4.7427E-02 7.4404E-03 -7.6080E-04 4.4407E-05 -1.0708E-06 S8 -1.0834E-01 8.9388E-02 -3.2143E-02 6.8069E-03 -8.7456E-04 6.3360E-05 -1.9936E-06 S9 -1.3727E-02 2.1314E-03 -2.3457E-04 1.7863E-05 -8.9492E-07 2.6533E-08 -3.5269E-10 S10 -1.4473E-04 1.0896E-05 -5.8669E-07 2.2007E-08 -5.4591E-10 8.0462E-12 -5.3339E-14

Table 6-2

FIG. 6A shows the on-axis chromatic aberration curve of the optical imaging lens of Embodiment 3, which represents the deviation of the converging point of light of different wavelengths after passing through the lens. FIG. 6B shows astigmatism curves of the optical imaging lens of Embodiment 3, which represent the meridional curvature of the image plane and the sagittal image plane curvature. FIG. 6C shows the distortion curve of the optical imaging lens of Example 3, which represents the distortion magnitude values corresponding to different image heights. FIG. 6D shows the magnification chromatic aberration curve of the optical imaging lens of Example 3, which represents the deviation of different image heights on the imaging plane after light passes through the lens. It can be seen from FIGS. 6A to 6D that the optical imaging lens provided in Embodiment 3 can achieve good imaging quality.

Example 4

The optical imaging lens according to Embodiment 4 of the present application is described below with reference to FIGS. 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 , the optical imaging lens sequentially includes from the object side to the image side: a first lens E1, a diaphragm STO, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter Sheet E6 and imaging plane S13.

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

In this example, the total effective focal length f of the optical imaging lens is 2.02mm, the total length TTL of the optical imaging lens is 5.69mm, and the half of the diagonal length of the effective pixel area on the imaging surface S13 of the optical imaging lens ImgH is 3.63mm , the Semi-FOV of the half of the maximum field of view of the optical imaging lens is 64.6°, and the aperture value Fno of the optical imaging lens is 2.27.

Table 7 shows the basic parameter table of the optical imaging lens of Example 4, wherein the units of curvature radius, thickness/distance and focal length are all millimeters (mm). Tables 8-1 and 8-2 show the coefficients of higher-order terms that can be used for each aspherical mirror surface in Example 4, wherein each aspherical surface type can be defined by the formula (1) given in Example 1 above.

Table 7

face number A4 A6 A8 A10 A12 A14 A16 S1 2.0562E-01 -4.3280E-01 1.3580E+00 -3.4303E+00 6.3751E+00 -8.6544E+00 8.6289E+00 S2 4.4676E-01 -9.7775E-01 2.3448E+00 7.5544E+00 -1.1143E+02 5.8595E+02 -1.8887E+03 S3 -2.7899E-02 7.6012E-01 -2.0745E+01 3.6356E+02 -4.8613E+03 4.8062E+04 -3.4250E+05 S4 -2.7840E-01 -1.4085E-01 1.7899E+01 -1.9862E+02 1.3009E+03 -5.7458E+03 1.7879E+04 S5 3.7883E-02 -1.2627E+00 8.7025E+00 -4.4048E+01 1.6737E+02 -4.6854E+02 9.6189E+02 S6 -1.8821E-01 5.8434E-01 -1.9348E+00 5.1004E+00 -9.4052E+00 1.2004E+01 -1.0552E+01 S7 -1.0991E-01 4.5366E-01 -1.2089E+00 2.4124E+00 -3.5297E+00 3.7500E+00 -2.9072E+00 S8 7.2741E-01 -2.0892E+00 4.0546E+00 -5.7648E+00 6.1627E+00 -4.9388E+00 2.9436E+00 S9 5.4114E-01 -1.4278E+00 1.6789E+00 -1.2307E+00 6.6014E-01 -3.1281E-01 1.4628E-01 S10 -3.5352E-02 -3.6863E-01 4.4381E-01 -2.5209E-01 6.3960E-02 9.2147E-03 -1.3978E-02

Table 8-1

Table 8-2

FIG. 8A shows the on-axis chromatic aberration curve of the optical imaging lens of Embodiment 4, which represents the deviation of the focusing point of light of different wavelengths after passing through the lens. FIG. 8B shows astigmatism curves of the optical imaging lens of Example 4, which represent the meridional curvature of the image plane and the sagittal image plane curvature. FIG. 8C shows a distortion curve of the optical imaging lens of Example 4, which represents the distortion magnitude values corresponding to different image heights. FIG. 8D shows the magnification chromatic aberration curve of the optical imaging lens of Example 4, which represents the deviation of different image heights on the imaging plane after light passes through the lens. It can be seen from FIG. 8A to FIG. 8D that the optical imaging lens provided in Embodiment 4 can achieve good imaging quality.

Example 5

The optical imaging lens according to Embodiment 5 of the present application is described below with reference to FIGS. 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 , the optical imaging lens sequentially includes from the object side to the image side: a first lens E1, a diaphragm STO, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter Sheet E6 and imaging plane S13.

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

In this example, the total effective focal length f of the optical imaging lens is 1.87mm, the total length TTL of the optical imaging lens is 5.60mm, and the half of the diagonal length ImgH of the effective pixel area on the imaging surface S13 of the optical imaging lens is 3.63mm , the Semi-FOV of half the maximum field of view of the optical imaging lens is 63.9°, and the aperture value Fno of the optical imaging lens is 2.27.

Table 9 shows the basic parameter table of the optical imaging lens of Example 5, wherein the units of curvature radius, thickness/distance and focal length are all millimeters (mm). Tables 10-1 and 10-2 show the coefficients of higher-order terms that can be used for each aspherical mirror surface in Example 5, wherein each aspherical surface type can be defined by the formula (1) given in Example 1 above.

Table 9

face number A4 A6 A8 A10 A12 A14 A16 S1 3.9750E-01 -1.7838E+00 7.7353E+00 -2.3894E+01 5.2114E+01 -8.1552E+01 9.2875E+01 S2 4.1688E-01 -5.3279E-01 -6.2108E+00 9.1732E+01 -6.4223E+02 2.9233E+03 -9.2934E+03 S3 7.2585E-02 -1.4454E+01 5.5128E+02 -1.2598E+04 1.7690E+05 -1.4720E+06 5.3945E+06 S4 2.1256E-01 -1.0690E+01 1.9499E+02 -2.2589E+03 1.7544E+04 -9.4504E+04 3.6195E+05 S5 -7.5634E-02 -1.3290E+00 1.6318E+01 -1.3671E+02 7.5947E+02 -2.8207E+03 7.2437E+03 S6 -5.3349E-02 6.5078E-01 -4.3393E+00 1.3379E+01 -2.1941E+01 1.5214E+01 1.2712E+01 S7 -2.0146E-01 1.1038E+00 -3.1863E+00 6.6629E+00 -1.0712E+01 1.3043E+01 -1.1811E+01 S8 8.9402E-01 -4.5752E+00 1.6824E+01 -4.1409E+01 6.9674E+01 -8.2402E+01 6.9886E+01 S9 5.3916E-01 -1.8536E+00 4.8149E+00 -9.4664E+00 1.2715E+01 -1.1561E+01 7.1855E+00 S10 5.4658E-02 -3.3123E-01 2.0427E-01 5.0261E-02 -1.4677E-01 1.0260E-01 -4.1388E-02

Table 10-1

face number A18 A20 A22 A24 A26 A28 A30 S1 -7.7521E+01 4.7350E+01 -2.0906E+01 6.4913E+00 -1.3438E+00 1.6641E-01 -9.3203E-03 S2 2.1089E+04 -3.4166E+04 3.8915E+04 -3.0153E+04 1.4957E+04 -4.2139E+03 4.9990E+02 S3 2.2670E+07 -4.1026E+08 2.5164E+09 -8.8563E+09 1.8822E+10 -2.2547E+10 1.1739E+10 S4 -9.9920E+05 1.9926E+06 -2.8414E+06 2.8217E+06 -1.8509E+06 7.1960E+05 -1.2531E+05 S5 -1.3177E+04 1.7143E+04 -1.5866E+04 1.0208E+04 -4.3424E+03 1.0986E+03 -1.2522E+02 S6 -4.3684E+01 5.2889E+01 -3.8114E+01 1.7556E+01 -5.0746E+00 8.3890E-01 -6.0415E-02 S7 7.8772E+00 -3.8366E+00 1.3449E+00 -3.2988E-01 5.3677E-02 -5.2003E-03 2.2684E-04 S8 -4.2960E+01 1.9157E+01 -6.1306E+00 1.3713E+00 -2.0342E-01 1.7967E-02 -7.1479E-04 S9 -3.0513E+00 8.6424E-01 -1.5140E-01 1.2469E-02 5.0128E-04 -1.9282E-04 1.1719E-05 S10 1.1019E-02 -2.0218E-03 2.5783E-04 -2.2489E-05 1.2811E-06 -4.2964E-08 6.4361E-10

Table 10-2

FIG. 10A shows the on-axis chromatic aberration curve of the optical imaging lens of Example 5, which represents the deviation of the converging point of light of different wavelengths after passing through the lens. FIG. 10B shows astigmatism curves of the optical imaging lens of Example 5, which represent the meridional curvature of the image plane and the sagittal curvature of the image plane. FIG. 10C shows the distortion curve of the optical imaging lens of Example 5, which represents the distortion magnitude values corresponding to different image heights. FIG. 10D shows the magnification chromatic aberration curve of the optical imaging lens of Example 5, which represents the deviation of different image heights on the imaging plane after light passes through the lens. It can be seen from FIG. 10A to FIG. 10D that the optical imaging lens provided in Embodiment 5 can achieve good imaging quality.

Example 6

The optical imaging lens according to Embodiment 6 of the present application is described below with reference to FIGS. 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 , the optical imaging lens sequentially includes from the object side to the image side: a first lens E1, a diaphragm STO, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter Sheet E6 and imaging plane S13.

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

In this example, the total effective focal length f of the optical imaging lens is 2.07mm, the total length TTL of the optical imaging lens is 5.91mm, and the half of the diagonal length ImgH of the effective pixel area on the imaging surface S13 of the optical imaging lens is 3.63mm , the Semi-FOV of half the maximum field of view of the optical imaging lens is 64.1°, and the aperture value Fno of the optical imaging lens is 2.27.

Table 11 shows the basic parameter table of the optical imaging lens of Example 6, wherein the units of curvature radius, thickness/distance, and focal length are all millimeters (mm). Tables 12-1 and 12-2 show the coefficients of higher-order terms that can be used for each aspherical mirror surface in Example 6, wherein each aspherical surface type can be defined by the formula (1) given in Example 1 above.

Table 11

face number A4 A6 A8 A10 A12 A14 A16 S1 2.4160E-01 -4.8599E-01 1.3536E+00 -3.1616E+00 5.5908E+00 -7.3315E+00 7.1204E+00 S2 3.5389E-01 -8.1089E-01 5.0072E+00 -3.3406E+01 1.8611E+02 -7.6436E+02 2.2615E+03 S3 -4.2528E-02 1.5152E+00 -4.0131E+01 6.4513E+02 -7.2278E+03 5.7921E+04 -3.3472E+05 S4 -3.6894E-01 1.5954E+00 -2.1653E+00 -4.0181E+01 4.1835E+02 -2.2272E+03 7.7302E+03 S5 -1.0664E-02 -7.4396E-01 4.5186E+00 -1.8328E+01 5.4563E+01 -1.1913E+02 1.8949E+02 S6 -2.2577E-01 6.5653E-01 -1.7973E+00 4.0764E+00 -6.8087E+00 8.1788E+00 -7.1265E+00 S7 -6.1798E-02 1.6398E-01 -3.5156E-01 6.2871E-01 -8.2603E-01 7.6473E-01 -5.0142E-01 S8 7.2356E-01 -1.9595E+00 3.5377E+00 -4.6388E+00 4.5668E+00 -3.3841E+00 1.8772E+00 S9 5.5037E-01 -1.4180E+00 1.5964E+00 -1.0310E+00 3.8610E-01 -6.4764E-02 -1.0501E-02 S10 -8.3214E-02 -2.7710E-01 3.5589E-01 -2.2434E-01 8.9134E-02 -2.4202E-02 4.6592E-03

Table 12-1

face number A18 A20 A22 A24 A26 A28 A30 S1 -5.1185E+00 2.7077E+00 -1.0387E+00 2.8065E-01 -5.0600E-02 5.4604E-03 -2.6660E-04 S2 -4.8192E+03 7.3912E+03 -8.0771E+03 6.1304E+03 -3.0679E+03 9.0912E+02 -1.2067E+02 S3 1.3957E+06 -4.1776E+06 8.8573E+06 -1.2947E+07 1.2386E+07 -6.9704E+06 1.7477E+06 S4 -1.8651E+04 3.1905E+04 -3.8591E+04 3.2263E+04 -1.7725E+04 5.7531E+03 -8.3524E+02 S5 -2.1939E+02 1.8432E+02 -1.1104E+02 4.6689E+01 -1.2994E+01 2.1476E+00 -1.5936E-01 S6 4.5447E+00 -2.1217E+00 7.1677E-01 -1.7041E-01 2.7011E-02 -2.5588E-03 1.0945E-04 S7 2.3548E-01 -7.9496E-02 1.9129E-02 -3.2001E-03 3.5345E-04 -2.3157E-05 6.8109E-07 S8 -7.7457E-01 2.3557E-01 -5.1939E-02 8.0569E-03 -8.3245E-04 5.1370E-05 -1.4311E-06 S9 9.0664E-03 -2.5406E-03 4.1636E-04 -4.3213E-05 2.8028E-06 -1.0400E-07 1.6891E-09 S10 -6.4666E-04 6.4894E-05 -4.6616E-06 2.3352E-07 -7.7412E-09 1.5254E-10 -1.3518E-12

Table 12-2

FIG. 12A shows the on-axis chromatic aberration curve of the optical imaging lens of Example 6, which represents the deviation of the confocal point of light of different wavelengths after passing through the lens. FIG. 12B shows astigmatism curves of the optical imaging lens of Example 6, which represent the meridional curvature of the image plane and the sagittal image plane curvature. FIG. 12C shows the distortion curve of the optical imaging lens of Example 6, which represents the distortion magnitude values corresponding to different image heights. FIG. 12D shows the magnification chromatic aberration curve of the optical imaging lens of Example 6, which represents the deviation of different image heights on the imaging plane after light passes through the lens. It can be seen from FIGS. 12A to 12D that the optical imaging lens provided in Embodiment 6 can achieve good imaging quality.

In conclusion, Examples 1 to 6 satisfy the relationships shown in Table 13, respectively.

Conditional Expression/Example 1 2 3 4 5 6 ImgH/(f2+f5) 3.71 2.64 0.07 4.03 4.76 3.83 R9/f3 3.97 5.97 4.58 4.04 3.97 4.22 CT5/T45 2.57 1.23 3.17 3.21 3.41 2.33 ET4/CT4 0.16 0.25 0.23 0.17 0.17 0.15 R4/R8 2.40 2.75 1.27 2.45 1.91 2.34 R1/f12 -2.51 -4.35 -2.49 -1.21 -2.04 -3.13 f123/f 1.97 1.62 2.72 1.85 2.24 2.02 SAG42/SAG32 -4.14 -9.17 -4.17 -3.83 -9.43 -3.94 f45/(T34+T45) 5.70 7.24 4.05 5.85 5.10 5.23

Table 13

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

The above description is only a preferred embodiment of the present application and an illustration of the applied technical principles. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to the technical solution formed by the specific combination of the above-mentioned technical features, and should also cover, without departing from the inventive concept, the above-mentioned technical features or their Other technical solutions formed by any combination of equivalent features. For example, a technical solution is formed by replacing the above-mentioned features with the technical features disclosed in this application (but not limited to) with similar functions.

Claims (10)

1. The optical imaging lens assembly, in order from an object side to an image side along an optical axis, comprises:

a first lens having a refractive power, an object side surface of which is concave;

a second lens having a positive optical power;

a third lens with negative focal power, wherein the object side surface of the third lens is a convex surface;

a fourth lens having an optical power; and

a fifth lens having a refractive power, an object side surface of which is concave;

half of the Semi-FOV of the maximum field angle of the optical imaging lens satisfies: Semi-FOV is more than or equal to 60 degrees; and

half of a diagonal length ImgH of an effective pixel area on an imaging surface of the optical imaging lens, an effective focal length f2 of the second lens, and an effective focal length f5 of the fifth lens satisfy: 0 < ImgH/(f2+ f5) < 5.0.

2. The optical imaging lens of claim 1, wherein the radius of curvature R9 of the object side surface of the fifth lens and the effective focal length f3 of the third lens satisfy: r9/f3 is more than 3.5 and less than 6.0.

3. The optical imaging lens of claim 1, wherein a center thickness CT5 of the fifth lens on the optical axis and a separation distance T45 of the fourth lens and the fifth lens on the optical axis satisfy: 1.0 < CT5/T45 < 3.5.

4. The optical imaging lens of claim 1, wherein the edge thickness ET4 of the fourth lens and the center thickness CT4 of the fourth lens on the optical axis satisfy: 0 < ET4/CT4 < 0.5.

5. The optical imaging lens of claim 1, wherein the radius of curvature R4 of the image-side surface of the second lens and the radius of curvature R8 of the image-side surface of the fourth lens satisfy: 1.0 < R4/R8 < 3.0.

6. The optical imaging lens of claim 1, wherein a radius of curvature R1 of the object side surface of the first lens and a combined focal length f12 of the first lens and the second lens satisfy: -4.5 < R1/f12 < -1.0.

7. The optical imaging lens of claim 1, wherein a combined focal length f123 of the first lens, the second lens and the third lens and a total effective focal length f of the optical imaging lens satisfy: f123/f is more than 1.5 and less than 3.0.

8. The optical imaging lens of claim 1, wherein a distance SAG32 on the optical axis from an intersection point of the image-side surface of the third lens and the optical axis to an effective radius vertex of the image-side surface of the third lens to a distance SAG42 on the optical axis from an intersection point of the image-side surface of the fourth lens and the optical axis to an effective radius vertex of the image-side surface of the fourth lens satisfies: -9.5 < SAG42/SAG32 < -3.5.

9. The optical imaging lens according to claim 1, wherein a combined focal length f45 of the fourth lens and the fifth lens, a separation distance T34 of the third lens and the fourth lens on the optical axis, and a separation distance T45 of the fourth lens and the fifth lens on the optical axis satisfy: 4.0 < f45/(T34+ T45) < 7.5.

10. The optical imaging lens assembly, in order from an object side to an image side along an optical axis, comprises:

a first lens having a refractive power, an object side surface of which is concave;

a second lens having a positive optical power;

a third lens with negative focal power, wherein the object side surface of the third lens is a convex surface;

a fourth lens having an optical power; and

a fifth lens having a refractive power, an object side surface of which is concave;

half of the Semi-FOV of the maximum field angle of the optical imaging lens satisfies: Semi-FOV is more than or equal to 60 degrees; a combined focal length f45 of the fourth lens and the fifth lens, a separation distance T34 of the third lens and the fourth lens on the optical axis, and a separation distance T45 of the fourth lens and the fifth lens on the optical axis satisfy: 4.0 < f45/(T34+ T45) < 7.5.

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