WO2021057229A1 - Optical imaging lens - Google Patents

Abstract

An optical imaging lens, sequentially comprising, from an object side to an image side along an optical axis, a first lens (E1) having positive focal power; a second lens (E2) having negative focal power; a third lens (E3) having focal power; a fourth lens (E4) having focal power, an object side surface (S8) being a convex surface; and a fifth lens (E5) having negative focal power, an image side surface (S10) is a concave surface, wherein a total effective focal length f of the optical imaging lens satisfies the condition that 12 mm<f<20 mm.

Description

Optical imaging lens

Cross-references to related applications

This application claims the priority and rights of the Chinese patent application with patent application number 201910913431.X filed with the China National Intellectual Property Office (CNIPA) on September 25, 2019, which is incorporated herein by reference in its entirety.

Technical field

This application relates to an optical imaging lens, in particular to an optical imaging lens including five lenses.

Background technique

With the advancement of science and technology, electronic products with camera functions have developed rapidly, and are increasingly used in multi-scene photography in different environments. Among them, electronic products that can be applied to long-distance high-definition photography are more popular in the market. For the camera function of electronic products, the optical imaging lens is the key to determining the camera effect of electronic products. The long focal length lens is very suitable for long-range shooting due to its small depth of field and easy background blurring. Therefore, in order for electronic products to have a good shooting effect when shooting at a long distance, the optical imaging lens in the shooting device is required to have a telephoto feature. However, the long focal length lens is usually extremely susceptible to the influence of the ambient temperature due to the excessively long focal length, and the image quality is likely to decrease due to the change of the temperature.

Summary of the invention

An aspect of the present application provides such an optical imaging lens, which includes in order from the object side to the image side along the optical axis: a first lens with positive refractive power; a second lens with negative refractive power ; A third lens with refractive power; a fourth lens with refractive power, whose image side is convex; and a fifth lens with negative refractive power, whose object side is concave.

In one embodiment, the total effective focal length f of the optical imaging lens satisfies: 12mm<f<20mm.

In one embodiment, half of the diagonal length ImgH of the effective pixel area on the imaging surface of the optical imaging lens and the total effective focal length f of the optical imaging lens satisfy: ImgH/f<0.3.

In one embodiment, the radius of curvature R1 of the object side surface of the first lens, the radius of curvature R5 of the object side surface of the third lens, the effective focal length f1 of the first lens, and the effective focal length f3 of the third lens satisfy: 0.2<(R1+ R5)/(f1+f3)<0.7.

In one embodiment, the effective focal length f2 of the second lens and the effective focal length f5 of the fifth lens satisfy: 0.2<f2/f5<1.4.

In one embodiment, the maximum field of view FOV of the optical imaging lens satisfies: FOV<25°.

In one embodiment, the distance TTL from the object side of the first lens to the imaging surface of the optical imaging lens on the optical axis and the total effective focal length f of the optical imaging lens satisfy: TTL/f<1.1.

In one embodiment, the radius of curvature R4 of the image side surface of the second lens, the radius of curvature R8 of the image side surface of the fourth lens, and the radius of curvature R9 of the object side surface of the fifth lens satisfy: -0.6<R4/(R8+R9) <-0.1.

In one embodiment, the central thickness CT1 of the first lens on the optical axis and the distance TTL from the object side of the first lens to the imaging surface of the optical imaging lens on the optical axis satisfy: 1.8<CT1/TTL×10<2.3.

In one embodiment, the combined focal length f123 of the first lens, the second lens, and the third lens and the combined focal length f45 of the fourth lens and the fifth lens satisfy: -0.8<f123/f45<-0.3.

In one embodiment, the separation distance T34 between the third lens and the fourth lens on the optical axis and the distance BFL from the image side surface of the fifth lens to the imaging surface of the optical imaging lens on the optical axis satisfy: 0.2<T34/BFL< 0.6.

In one embodiment, the on-axis distance from the intersection of the object side surface of the third lens and the optical axis to the apex of the effective radius of the object side surface of the third lens SAG31 and the intersection point of the object side surface of the first lens and the optical axis to the object side surface of the first lens The on-axis distance SAG11 of the apex of the effective radius satisfies: 0.5<SAG31/SAG11<1.3.

In one embodiment, the on-axis distance SAG51 from the intersection of the object side surface of the fifth lens and the optical axis to the vertex of the effective radius of the object side of the fifth lens, the intersection point of the image side surface of the fifth lens and the optical axis to the image side surface of the fifth lens The on-axis distance of the apex of the effective radius of SAG52, the on-axis distance from the intersection of the object side of the fourth lens and the optical axis to the apex of the effective radius of the object side of the fourth lens, and the intersection of SAG41 and the image side of the fourth lens and the optical axis to the fourth The on-axis distance SAG42 of the apex of the effective radius of the image side surface of the lens satisfies: 0.2<(SAG51+SAG52)/(SAG41+SAG42)<0.9.

In one embodiment, at least one of the first lens to the fifth lens is a glass lens.

In one embodiment, the object side surface and the image side surface of at least one of the first lens to the fifth lens are both spherical.

The optical imaging lens provided by the present application adopts a plurality of lens settings, including the first lens to the fifth lens. By reasonably setting the total effective focal length of the optical imaging lens, the optical power and surface shape of each lens are optimized to make the optical imaging lens have a good imaging quality while having a telephoto feature.

Description of the drawings

With reference to the accompanying drawings, through the following detailed description of the non-limiting implementation manners, other features, purposes and advantages of the present application will become more apparent. In the attached picture:

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 axial chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical imaging lens of Embodiment 1;

FIG. 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 axial chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical imaging lens of Embodiment 2;

FIG. 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 axial chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical imaging lens of Embodiment 3;

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

8A to 8D respectively show the axial 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 axial 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;

12A to 12D respectively show the axial chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical imaging lens of Embodiment 6;

FIG. 13 shows a schematic structural diagram of an optical imaging lens according to Embodiment 7 of the present application;

14A to 14D respectively show the axial chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical imaging lens of Embodiment 7;

FIG. 15 shows a schematic structural diagram of an optical imaging lens according to Embodiment 8 of the present application;

16A to 16D respectively show the axial chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical imaging lens of Example 8.

detailed description

In order to better understand the application, various aspects of the application will be described in more detail with reference to the accompanying drawings. It should be understood that these detailed descriptions are only descriptions 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, expressions such as first, second, third, etc. are only used to distinguish one feature from another feature, and do not represent any restriction on the feature. Therefore, without departing from the teachings of the present application, the first lens discussed below may also be referred to as a second lens or a third lens.

In the drawings, the thickness, size, and shape of the lens have been slightly exaggerated for ease of description. Specifically, the shape of the spherical or aspherical surface shown in the drawings is shown by way of example. That is, the shape of the spherical surface or the aspheric surface is not limited to the shape of the spherical surface or the aspheric surface shown in the drawings. The drawings are only examples and are not drawn strictly to scale.

In this article, the paraxial area refers to the area near the optical axis. If the lens surface is convex and the position of the convex surface 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 position of the concave surface 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 should also be understood that the terms "including", "including", "having", "including" and/or "including", when used in this specification, mean that the stated features, elements and/or components are present , But does not exclude the presence or addition of one or more other features, elements, components and/or their combination. In addition, when expressions such as "at least one of" appear after the list of listed features, the entire listed feature is modified instead of individual elements in the list. In addition, when describing the embodiments of the present application, "may" is used to mean "one or more embodiments of the present application". Also, the term "exemplary" is intended to refer to an example or illustration.

Unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meanings as commonly understood by those 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 as having meanings consistent with their meanings in the context of related technologies, and will not be interpreted in an idealized or excessively formal sense unless This is clearly defined in this article.

It should be noted that the embodiments in this application and the features in the embodiments can be combined with each other if there is no conflict. Hereinafter, the application will be described in detail with reference to the drawings and in conjunction with the embodiments.

The features, principles and other aspects of the application will be described in detail below.

The optical imaging lens according to the exemplary embodiment of the present application may include, for example, five lenses having optical power, that is, a first lens, a second lens, a third lens, a fourth lens, and a fifth lens. The five lenses are arranged in order from the object side to the image side along the optical axis.

In an exemplary embodiment, the first lens may have positive refractive power; the second lens may have negative refractive power; the third lens may have positive refractive power or negative refractive power; the fourth lens may have positive refractive power or negative refractive power The optical power has a convex image side surface; and the fifth lens may have a negative optical power and the object side surface has a concave surface. The imaging quality of the optical imaging lens can be improved by rationally configuring the optical power and surface shape of each lens.

The total effective focal length f of the optical imaging lens can satisfy: 12mm<f<20mm, for example, 12mm<f<16mm. The total effective focal length of the optical imaging lens is set between 12mm and 20mm, so that the optical imaging lens has a telephoto feature, which facilitates long-distance high-definition imaging of the optical imaging system.

In an exemplary embodiment, half of the diagonal length ImgH of the effective pixel area on the imaging surface of the optical imaging lens and the total effective focal length f of the optical imaging lens may satisfy: ImgH/f<0.3, for example, 0.1<ImgH/f <0.3. Reasonable setting of the ratio between half the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens and the total effective focal length of the optical imaging lens is conducive to making the optical imaging system compact and at the same time having telephoto characteristics. Optical imaging system for long-distance HD imaging.

In an exemplary embodiment, the radius of curvature R1 of the object side surface of the first lens, the radius of curvature R5 of the object side surface of the third lens, the effective focal length f1 of the first lens, and the effective focal length f3 of the third lens may satisfy: 0.2<( R1+R5)/(f1+f3)<0.7, for example, 0.3<(R1+R5)/(f1+f3)<0.6. Properly setting the ratio of the sum of the curvature radius of the object side surface of the first lens and the object side surface of the third lens to the sum of the effective focal length of the first lens and the effective focal length of the third lens is beneficial to better realization of optics. The optical path deflection in the system balances the high-level spherical aberration generated by the optical system.

In an exemplary embodiment, the effective focal length f2 of the second lens and the effective focal length f5 of the fifth lens may satisfy: 0.2<f2/f5<1.4. Reasonable setting of the ratio between the effective focal length of the second lens and the effective focal length of the fifth lens is beneficial to reduce the optical sensitivity of the second lens and the fifth lens, thereby facilitating mass production.

In an exemplary embodiment, the maximum field of view FOV of the optical imaging lens may satisfy: FOV<25°, for example, 20°<FOV<25°. Reasonably setting the maximum angle of view of the optical imaging lens is beneficial to control the imaging range of the optical system.

In an exemplary embodiment, the distance from the object side of the first lens to the imaging surface of the optical imaging lens on the optical axis TTL and the total effective focal length f of the optical imaging lens may satisfy: TTL/f<1.1, for example, 0.8<TTL /f<1.1. Reasonably setting the ratio of the distance from the object side of the first lens to the imaging surface of the optical imaging lens on the optical axis and the total effective focal length of the optical imaging lens is beneficial to the optical imaging system to meet the telephoto characteristics while ensuring the optical system’s performance The overall length is within a reasonable range to achieve a thinner lens.

In an exemplary embodiment, the radius of curvature R4 of the image side surface of the second lens, the radius of curvature R8 of the image side surface of the fourth lens, and the radius of curvature R9 of the object side surface of the fifth lens may satisfy: -0.6<R4/(R8+ R9)<-0.1. Reasonably setting the ratio of the curvature radius of the image side surface of the second lens to the sum of the radius of curvature of the image side surface of the fourth lens and the radius of curvature of the object side surface of the fifth lens is beneficial to control the deflection angle of the edge rays of the optical system and reduce the optics. System sensitivity.

In an exemplary embodiment, the central thickness CT1 of the first lens on the optical axis and the distance from the object side of the first lens to the imaging surface of the optical imaging lens on the optical axis TTL may satisfy: 1.8<CT1/TTL×10< 2.3. Reasonably setting the ratio between the center thickness of the first lens on the optical axis and the distance from the object side of the first lens to the imaging surface of the optical imaging lens on the optical axis is beneficial to ensure that the optical imaging lens has good processing characteristics. It also helps to ensure that the refraction angle of the incident light at the first lens is not too large, so as to improve the imaging quality of the optical system.

In an exemplary embodiment, the combined focal length f123 of the first lens, the second lens, and the third lens and the combined focal length f45 of the fourth lens and the fifth lens may satisfy: -0.8<f123/f45<-0.3. Reasonably setting the ratio of the combined focal length of the first lens, the second lens, and the third lens to the combined focal length of the fourth lens and the fifth lens is beneficial to balance the off-axis aberration of the optical system and improve the system's ability to correct aberrations.

In an exemplary embodiment, the separation distance T34 between the third lens and the fourth lens on the optical axis and the distance BFL from the image side surface of the fifth lens to the imaging surface of the optical imaging lens on the optical axis may satisfy: 0.2<T34/ BFL<0.6. Setting the ratio of the distance between the third lens and the fourth lens on the optical axis to the distance from the image side surface of the fifth lens to the imaging surface of the optical imaging lens on the optical axis is within a reasonable value range, which is beneficial to the lens in the optical system The field curvature between is effectively balanced, so that the optical system has a reasonable field curvature.

In an exemplary embodiment, the on-axis distance from the intersection point of the object side surface of the third lens and the optical axis to the apex of the effective radius of the object side surface of the third lens SAG31 and the intersection point of the object side surface of the first lens and the optical axis to the object side of the first lens The on-axis distance SAG11 of the vertex of the effective radius of the side surface can satisfy: 0.5<SAG31/SAG11<1.3. Reasonably set the on-axis distance from the intersection of the object side of the third lens and the optical axis to the vertex of the effective radius of the object side of the third lens and the intersection of the object side of the first lens and the optical axis to the vertex of the effective radius of the object side of the first lens. The proportional relationship of the on-axis distance is conducive to adjusting the chief ray angle of the optical imaging lens, improving the relative brightness of the lens group in the optical imaging lens, and improving the image clarity.

In an exemplary embodiment, the on-axis distance SAG51 from the intersection of the object side surface of the fifth lens and the optical axis to the vertex of the effective radius of the object side of the fifth lens, the intersection of the image side surface of the fifth lens and the optical axis to the image of the fifth lens The on-axis distance of the apex of the effective radius of the side surface SAG52, the on-axis distance from the intersection of the object side surface of the fourth lens and the optical axis to the apex of the effective radius of the object side of the fourth lens The on-axis distance SAG42 of the apex of the effective radius of the image side surface of the four-lens may satisfy: 0.2<(SAG51+SAG52)/(SAG41+SAG42)<0.9. Reasonably setting the ratio of the sum of the object-side vector height of the fifth lens and the image-side vector height of the fifth lens to the sum of the object-side vector height of the fourth lens and the image-side vector height of the fourth lens is beneficial to ensure that the fourth lens and the first lens The shape and processing of the five lenses are at a better level, which is beneficial to balance the spherical aberration, coma and astigmatism produced by the optical system.

In an exemplary embodiment, at least one of the first lens to the fifth lens may be a glass lens. The use of a glass lens in an optical imaging lens can have at least one of the following benefits: a wider refractive index distribution of the glass, a wider selection of sources of materials, and a lower thermal expansion coefficient of the glass. At the same time, due to the low thermal expansion coefficient of glass, the use of glass lenses in optical imaging systems can optimize the adverse effects caused by ambient temperature and improve the thermal stability of the optical system. Optionally, the third lens may be a glass lens.

In an exemplary embodiment, the object side surface and the image side surface of at least one of the first lens to the fifth lens are both spherical. Compared with the aspheric surface type, the spherical surface type arrangement can effectively reduce the processing cost of the lens, and can also reduce the influence of the surface sensitivity, thereby improving the production yield of the lens in the optical system. Optionally, both the object side surface and the image side surface of the third lens are spherical surfaces.

In an exemplary embodiment, the above-mentioned optical imaging lens may further include a diaphragm. The diaphragm can be set at an appropriate position as required. For example, a diaphragm is provided between the object side and the first lens, close to the object side of the first 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 on the imaging surface.

In an exemplary embodiment, the object side surface and/or the image side surface of a part of the lens in the optical imaging lens according to the present application may be an aspheric mirror surface. The characteristic of an aspheric lens is that the curvature changes continuously from the center of the lens to the periphery of the lens. Unlike a spherical lens with a constant curvature from the center of the lens to the periphery of the lens, an aspheric lens has better curvature radius characteristics, and has the advantages of improving distortion and astigmatism. After the aspheric lens is used, the aberrations that occur during imaging can be eliminated as much as possible, thereby improving the imaging quality. Optionally, either or both of the object side surface and the image side surface of at least one of the first lens, the second lens, the fourth lens, and the fifth lens may be an aspheric mirror surface. Optionally, the object side surface and the image side surface of each of the first lens, the second lens, the fourth lens, and the fifth lens may be an aspheric mirror surface.

The optical imaging lens according to the present application may have a long focal length. Because of its small depth of field, it is easy to achieve background blur, so it is very suitable for distant shooting. At the same time, since the lens in the lens system according to the present application is partially made of glass and partially made of plastic, the adaptability of the optical imaging lens to ambient temperature and the thermal stability of the optical system can be enhanced.

Exemplary embodiments of the present application also provide an imaging device including the optical imaging lens described above.

Exemplary embodiments of the present application also provide an electronic device including the above-described camera device.

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

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

Example 1

The optical imaging lens according to Embodiment 1 of the present application will be described below with reference to FIGS. 1 to 2D. FIG. 1 is a schematic diagram showing the structure of an optical imaging lens according to Embodiment 1 of the present application.

As shown in Figure 1, the optical imaging lens includes in order from the object side to the image side along the optical axis: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, and a fifth lens E5. , Filter E6 and imaging surface S13.

The first lens E1 has a positive refractive power, the object side surface S1 is a convex surface, and the image side surface S2 is a concave surface. The second lens E2 has a negative refractive power, the object side surface S3 is a convex surface, and the image side surface S4 is a concave surface. The third lens E3 has a positive refractive power, the object side surface S5 is a convex surface, and the image side surface S6 is a concave surface. The fourth lens E4 has a positive refractive power, the object side surface S7 is a concave surface, and the image side surface S8 is a convex surface. The fifth lens E5 has a negative refractive power, the object side surface S9 is a concave surface, and the image side surface S10 is a convex surface. The filter E6 has an object side surface S11 and an image side surface 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 Embodiment 1, wherein the units of the radius of curvature, thickness/distance, and focal length are all millimeters (mm).

Table 1

In this embodiment, the total effective focal length of the optical imaging lens f=14.44mm, the distance from the object side S1 of the first lens E1 to the imaging surface S13 on the optical axis TTL=12.69mm, the effective pixel area on the imaging surface S13 The half of the angular line is ImgH=2.70mm, and the maximum field of view of the optical imaging lens FOV=21.0°.

In Example 1, the object and image sides of the first lens E1, the second lens E2, the fourth lens E4, and the fifth lens E5 are all aspherical, and the surface shape x of each aspherical lens can be used but is not limited to the following The aspheric formula is limited:

Among them, x is the distance vector height of the aspheric surface at a height h along the optical axis direction; c is the paraxial curvature of the aspheric surface, c=1/R (that is, the paraxial curvature c is the above table The reciprocal of the radius of curvature R in 1); k is the conic coefficient; Ai is the correction coefficient of the i-th order of the aspheric surface. _{Table 2 below shows the higher order term coefficients A 4} , A ₆ , A ₈ , A ₁₀ , A ₁₂ , A ₁₄ , A ₁₆ , A that can be used for each aspheric mirror S1-S4 and S7-S10 in Example 1. ₁₈ and A ₂₀ .

Face number

A4

A6

A8

A10

A12

A14

A16

A18

A20

S1	-1.9000E-04	-1.4000E-05	-1.3000E-05	1.4700E-05	-7.7000E-06	2.5200E-06	-4.9000E-07	5.0200E-08	-2.0000E-09
S2	1.3228E-02	-4.0200E-03	1.5850E-03	2.7900E-04	-1.2800E-03	1.1000E-03	-4.6000E-04	9.4400E-05	-7.1000E-06
S3	7.9480E-03	-1.3600E-02	1.4207E-02	-1.3080E-02	8.5840E-03	-3.6200E-03	9.0200E-04	-1.2000E-04	6.4000E-06
S4	3.1882E-02	-2.2120E-02	2.0181E-02	-1.8360E-02	1.2831E-02	-5.9900E-03	1.7040E-03	-2.6000E-04	1.5700E-05
S7	-2.1390E-02	-7.4300E-03	-9.5200E-03	1.8592E-02	-1.5380E-02	5.1920E-03	8.9900E-04	-1.1400E-03	2.3700E-04
S8	-6.5110E-02	8.1489E-02	-2.6693E-01	4.4461E-01	-4.2400E-01	2.4247E-01	-8.2140E-02	1.5144E-02	-1.1600E-03
S9	-8.3720E-02	1.3437E-01	-3.6957E-01	6.0444E-01	-5.7812E-01	3.3287E-01	-1.1391E-01	2.1337E-02	-1.6800E-03
S10	-3.7480E-02	2.7444E-02	-3.7510E-02	4.5052E-02	-3.7170E-02	1.9104E-02	-5.8700E-03	9.9100E-04	-7.1000E-05

Table 2

FIG. 2A shows the axial 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. 2B shows the astigmatism curve of the optical imaging lens of Example 1, which represents meridional field curvature and sagittal field curvature. FIG. 2C shows a distortion curve of the optical imaging lens of Embodiment 1, which represents the distortion magnitude values corresponding to different field angles. 2D shows the chromatic aberration curve of magnification of the optical imaging lens of Embodiment 1, which represents the deviation of different image heights on the imaging surface after light passes through the lens. According to FIGS. 2A to 2D, it can be seen that the optical imaging lens provided in Embodiment 1 can achieve good imaging quality.

Example 2

The optical imaging lens according to Embodiment 2 of the present application will be described below with reference to FIGS. 3 to 4D. FIG. 3 shows a schematic structural diagram of an optical imaging lens according to Embodiment 2 of the present application.

As shown in Figure 3, the optical imaging lens includes in order from the object side to the image side along the optical axis: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, and a fifth lens E5. , Filter E6 and imaging surface S13.

The first lens E1 has a positive refractive power, the object side surface S1 is a convex surface, and the image side surface S2 is a concave surface. The second lens E2 has a negative refractive power, the object side surface S3 is a convex surface, and the image side surface S4 is a concave surface. The third lens E3 has a positive refractive power, the object side surface S5 is a convex surface, and the image side surface S6 is a concave surface. The fourth lens E4 has a positive refractive power, the object side surface S7 is a concave surface, and the image side surface S8 is a convex surface. The fifth lens E5 has a negative refractive power, the object side surface S9 is a concave surface, and the image side surface S10 is a concave surface. The filter E6 has an object side surface S11 and an image side surface 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 embodiment, the total effective focal length of the optical imaging lens f=14.35mm, the distance from the object side S1 of the first lens E1 to the imaging plane S13 on the optical axis TTL=12.69mm, the effective pixel area on the imaging plane S13 The half of the angular line is ImgH=2.70mm, and the maximum field of view of the optical imaging lens is FOV=21.2°.

Table 3 shows the basic parameter table of the optical imaging lens of Embodiment 2, wherein the units of the radius of curvature, thickness/distance, and focal length are all millimeters (mm). Table 4 shows the coefficients of higher-order terms that can be used for each aspheric mirror in Example 2.

table 3

Face number	A4	A6	A8	A10	A12	A14	A16	A18	A20
S1	-3.0000E-04	4.0300E-05	-8.6000E-05	4.8700E-05	-1.4000E-05	1.8600E-06	4.2200E-08	-3.9000E-08	3.1700E-09
S2	1.2444E-02	-1.4200E-03	-5.8700E-03	7.8880E-03	-4.9200E-03	1.6330E-03	-2.5000E-04	-4.2000E-07	3.2300E-06
S3	2.0096E-02	-1.2220E-02	7.0000E-05	7.0390E-03	-6.5300E-03	3.0670E-03	-8.2000E-04	1.2000E-04	-7.3000E-06
S4	3.2025E-02	-1.4210E-02	4.8620E-03	2.5410E-03	-5.1600E-03	3.7090E-03	-1.4900E-03	3.2700E-04	-3.1000E-05
S7	-1.9520E-02	-1.0670E-02	3.1920E-03	-4.9900E-03	9.3580E-03	-9.6300E-03	5.8090E-03	-1.9300E-03	2.7700E-04
S8	-6.4910E-02	8.9658E-02	-2.6721E-01	4.2568E-01	-3.9836E-01	2.2699E-01	-7.7530E-02	1.4578E-02	-1.1600E-03
S9	-1.0052E-01	1.7137E-01	-4.1283E-01	6.3337E-01	-5.8909E-01	3.3549E-01	-1.1472E-01	2.1650E-02	-1.7300E-03
S10	-4.1200E-02	3.5834E-02	-5.2470E-02	6.3270E-02	-5.1530E-02	2.6276E-02	-8.0600E-03	1.3600E-03	-9.7000E-05

Table 4

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

Example 3

Hereinafter, an optical imaging lens according to Embodiment 3 of the present application will be described 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 includes in order from the object side to the image side along the optical axis: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, and a fifth lens E5. , Filter E6 and imaging surface S13.

The first lens E1 has a positive refractive power, the object side surface S1 is a convex surface, and the image side surface S2 is a concave surface. The second lens E2 has a negative refractive power, the object side surface S3 is a concave surface, and the image side surface S4 is a concave surface. The third lens E3 has a positive refractive power, the object side surface S5 is a convex surface, and the image side surface S6 is a concave surface. The fourth lens E4 has a positive refractive power, the object side surface S7 is a concave surface, and the image side surface S8 is a convex surface. The fifth lens E5 has a negative refractive power, the object side surface S9 is a concave surface, and the image side surface S10 is a concave surface. The filter E6 has an object side surface S11 and an image side surface 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 embodiment, the total effective focal length of the optical imaging lens f=13.50mm, the distance from the object side S1 of the first lens E1 to the imaging surface S13 on the optical axis TTL=12.63mm, the effective pixel area on the imaging surface S13 The half of the angular line is ImgH=2.52mm, and the maximum field of view of the optical imaging lens FOV=21.0°.

Table 5 shows the basic parameter table of the optical imaging lens of Embodiment 3, wherein the units of the radius of curvature, thickness/distance, and focal length are all millimeters (mm). Table 6 shows the coefficients of higher-order terms that can be used for each aspheric mirror in Example 3.

table 5

Face number	A4	A6	A8	A10	A12	A14	A16	A18	A20
S1	-3.9000E-04	1.1400E-04	-2.3000E-04	2.3100E-04	-1.4000E-04	5.2200E-05	-1.2000E-05	1.4400E-06	-7.5000E-08
S2	9.3160E-03	-1.3100E-03	3.1500E-04	1.7400E-04	-1.1100E-03	1.3890E-03	-7.4000E-04	1.7600E-04	-1.5000E-05
S3	3.5780E-03	-5.2700E-03	6.5960E-03	-9.1100E-03	7.8510E-03	-3.8600E-03	1.0400E-03	-1.4000E-04	7.7500E-06
S4	2.2071E-02	-1.2350E-02	1.3345E-02	-1.8200E-02	1.7759E-02	-1.0940E-02	4.0410E-03	-8.2000E-04	7.0700E-05
S7	-3.4440E-02	1.0654E-02	-4.0400E-02	5.0931E-02	-2.7960E-02	-6.9000E-03	1.8497E-02	-9.5000E-03	1.6790E-03
S8	-1.2443E-01	3.0056E-01	-6.5961E-01	8.9679E-01	-7.7977E-01	4.3237E-01	-1.4709E-01	2.7800E-02	-2.2200E-03
S9	-1.4904E-01	4.1018E-01	-8.7566E-01	1.1810E+00	-1.0236E+00	5.6725E-01	-1.9359E-01	3.6924E-02	-3.0000E-03
S10	-3.8280E-02	4.5390E-02	-7.8070E-02	8.9695E-02	-6.7300E-02	3.2146E-02	-9.3900E-03	1.5240E-03	-1.1000E-04

Table 6

FIG. 6A shows an axial chromatic aberration curve of the optical imaging lens of Embodiment 3, which represents the deviation of the focusing point of light of different wavelengths after passing through the lens. 6B shows the astigmatism curve of the optical imaging lens of Example 3, which represents meridional field curvature and sagittal field curvature. FIG. 6C shows the distortion curve of the optical imaging lens of Embodiment 3, which represents the distortion magnitude values corresponding to different field angles. 6D shows the chromatic aberration curve of magnification of the optical imaging lens of Embodiment 3, which represents the deviation of different image heights on the imaging surface 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

Hereinafter, an optical imaging lens according to Embodiment 4 of the present application will be described 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 includes in order from the object side to the image side along the optical axis: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, and a fifth lens E5. , Filter E6 and imaging surface S13.

The first lens E1 has a positive refractive power, the object side surface S1 is a convex surface, and the image side surface S2 is a concave surface. The second lens E2 has a negative refractive power, the object side surface S3 is a convex surface, and the image side surface S4 is a concave surface. The third lens E3 has a positive refractive power, the object side surface S5 is a convex surface, and the image side surface S6 is a concave surface. The fourth lens E4 has a negative refractive power, the object side surface S7 is a concave surface, and the image side surface S8 is a convex surface. The fifth lens E5 has a negative refractive power, the object side surface S9 is a concave surface, and the image side surface S10 is a convex surface. The filter E6 has an object side surface S11 and an image side surface 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 embodiment, the total effective focal length of the optical imaging lens f=13.30mm, the distance from the object side S1 of the first lens E1 to the imaging plane S13 on the optical axis TTL=12.99mm, the effective pixel area on the imaging plane S13 The half of the angular line is ImgH=2.70mm, and the maximum field of view of the optical imaging lens is FOV=22.9°.

Table 7 shows the basic parameter table of the optical imaging lens of Embodiment 4, wherein the units of the radius of curvature, thickness/distance, and focal length are all millimeters (mm). Table 8 shows the coefficients of higher-order terms that can be used for each aspheric mirror in Example 4.

Table 7

Face number	A4	A6	A8	A10	A12	A14	A16	A18	A20
S1	-7.8000E-04	5.5100E-05	-1.0000E-04	9.4000E-05	-5.7000E-05	2.2000E-05	-5.0000E-06	6.2700E-07	-3.2567E-08
S2	2.2790E-03	2.6330E-03	-8.5000E-04	-7.4000E-04	6.8400E-04	1.0600E-04	-2.6000E-04	8.5700E-05	-8.5046E-06
S3	-1.4090E-02	1.1362E-02	-3.9700E-03	-2.7000E-03	4.6020E-03	-2.6800E-03	7.6500E-04	-1.1000E-04	5.7710E-06
S4	1.3747E-02	-1.5000E-03	3.8860E-03	-9.6200E-03	1.0794E-02	-6.8600E-03	2.5010E-03	-4.9000E-04	3.9665E-05
S7	-2.8800E-02	1.6207E-02	-5.2540E-02	9.5071E-02	-1.0695E-01	7.0830E-02	-2.5080E-02	3.6540E-03	1.1650E-05
S8	-1.9296E-01	3.9520E-01	-6.5644E-01	8.4967E-01	-7.9408E-01	4.8722E-01	-1.8208E-01	3.7315E-02	-3.2053E-03
S9	-2.5242E-01	5.5200E-01	-8.9598E-01	1.1428E+00	-1.0597E+00	6.4697E-01	-2.4075E-01	4.9126E-02	-4.2010E-03
S10	-4.5760E-02	7.3470E-02	-1.0720E-01	1.2243E-01	-1.0223E-01	5.6491E-02	-1.9090E-02	3.5430E-03	-2.7585E-04

Table 8

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

Example 5

Hereinafter, an optical imaging lens according to Embodiment 5 of the present application will be described 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 Figure 9, the optical imaging lens includes in order from the object side to the image side along the optical axis: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, and a fifth lens E5. , Filter E6 and imaging surface S13.

The first lens E1 has a positive refractive power, the object side surface S1 is a convex surface, and the image side surface S2 is a convex surface. The second lens E2 has a negative refractive power, the object side surface S3 is a convex surface, and the image side surface S4 is a concave surface. The third lens E3 has a positive refractive power, the object side surface S5 is a convex surface, and the image side surface S6 is a concave surface. The fourth lens E4 has a positive refractive power, the object side surface S7 is a concave surface, and the image side surface S8 is a convex surface. The fifth lens E5 has a negative refractive power, the object side surface S9 is a concave surface, and the image side surface S10 is a concave surface. The filter E6 has an object side surface S11 and an image side surface 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 embodiment, the total effective focal length of the optical imaging lens f=13.13mm, the distance from the object side S1 of the first lens E1 to the imaging surface S13 on the optical axis TTL=12.76mm, the effective pixel area on the imaging surface S13 The half of the angular line is ImgH=2.68mm, and the maximum field of view of the optical imaging lens FOV=22.9°.

Table 9 shows the basic parameter table of the optical imaging lens of Embodiment 5, wherein the units of the radius of curvature, thickness/distance, and focal length are all millimeters (mm). Table 10 shows the coefficients of higher-order terms that can be used for each aspheric mirror in Example 5.

Table 9

Face number	A4	A6	A8	A10	A12	A14	A16	A18	A20
S1	-1.3900E-03	1.5300E-04	-5.7000E-04	5.9000E-04	-3.6194E-04	1.3600E-04	-3.1000E-05	3.8900E-06	-2.1000E-07
S2	5.4193E-02	-1.3271E-01	1.7255E-01	-1.4127E-01	7.5481E-02	-2.6290E-02	5.7570E-03	-7.2000E-04	3.9800E-05
S3	4.9914E-02	-1.2653E-01	1.6338E-01	-1.3116E-01	6.7787E-02	-2.2450E-02	4.5600E-03	-5.1000E-04	2.4300E-05
S4	3.0966E-02	-3.2260E-02	3.0205E-02	-2.0980E-02	9.2311E-03	-2.2700E-03	1.8900E-04	3.1900E-05	-5.8000E-06
S7	-1.6430E-02	-8.4000E-03	-3.0040E-02	8.2736E-02	-1.0491E-01	7.5475E-02	-3.0830E-02	6.5160E-03	-5.2000E-04
S8	5.4450E-03	-2.3295E-01	4.3709E-01	-4.7152E-01	3.1392E-01	-1.3000E-01	3.2327E-02	-4.3700E-03	2.4500E-04
S9	3.1820E-02	-3.4271E-01	6.5385E-01	-7.1413E-01	4.8539E-01	-2.0729E-01	5.3754E-02	-7.6600E-03	4.5500E-04
S10	-2.2310E-02	-3.2080E-02	6.7837E-02	-6.9530E-02	4.3263E-02	-1.6840E-02	3.9780E-03	-5.1000E-04	2.7000E-05

Table 10

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

Example 6

Hereinafter, an optical imaging lens according to Embodiment 6 of the present application will be described 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 includes in order from the object side to the image side along the optical axis: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, and a fifth lens E5. , Filter E6 and imaging surface S13.

The first lens E1 has a positive refractive power, the object side surface S1 is a convex surface, and the image side surface S2 is a concave surface. The second lens E2 has negative refractive power, the object side surface S3 is convex, and the image side surface S4 is concave. The third lens E3 has a positive refractive power, the object side surface S5 is a convex surface, and the image side surface S6 is a convex surface. The fourth lens E4 has a positive refractive power, the object side surface S7 is a concave surface, and the image side surface S8 is a convex surface. The fifth lens E5 has a negative refractive power, the object side surface S9 is a concave surface, and the image side surface S10 is a concave surface. The filter E6 has an object side surface S11 and an image side surface 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 embodiment, the total effective focal length of the optical imaging lens f=13.23mm, the distance from the object side S1 of the first lens E1 to the imaging surface S13 on the optical axis TTL=12.89mm, the effective pixel area on the imaging surface S13 The half of the angular line is ImgH=2.65mm, and the maximum field of view of the optical imaging lens is FOV=22.5°.

Table 11 shows the basic parameter table of the optical imaging lens of Embodiment 6, wherein the units of the radius of curvature, thickness/distance, and focal length are all millimeters (mm). Table 12 shows the coefficients of higher-order terms that can be used for each aspheric mirror in Example 6.

Table 11

Face number	A4	A6	A8	A10	A12	A14	A16	A18	A20
S1	-1.7000E-04	1.9500E-04	-3.5962E-04	3.8000E-04	-2.4000E-04	9.3400E-05	-2.2000E-05	2.8100E-06	-1.5000E-07
S2	1.0976E-02	-3.8900E-03	9.0891E-03	-1.4040E-02	1.1781E-02	-5.3000E-03	1.0930E-03	-4.5000E-05	-9.2000E-06
S3	-6.5200E-03	-3.7300E-03	9.3646E-03	-1.6670E-02	1.6337E-02	-9.1700E-03	2.8490E-03	-4.5000E-04	2.7900E-05
S4	4.4983E-02	-4.3360E-02	4.3923E-02	-4.8900E-02	4.5607E-02	-3.0090E-02	1.2675E-02	-3.0300E-03	3.1100E-04
S7	-1.6570E-02	1.4297E-02	-5.7964E-02	9.7634E-02	-1.0076E-01	6.4113E-02	-2.4420E-02	5.0520E-03	-4.3000E-04
S8	-8.3430E-02	1.3747E-01	-2.9592E-01	4.1771E-01	-3.8203E-01	2.2231E-01	-7.9030E-02	1.5582E-02	-1.3000E-03
S9	-1.1371E-01	1.7595E-01	-3.3566E-01	4.5776E-01	-4.1451E-01	2.4169E-01	-8.6680E-02	1.7337E-02	-1.4800E-03
S10	-5.0090E-02	3.3686E-02	-2.3450E-02	1.1235E-02	-2.5800E-03	-4.3000E-04	4.5600E-04	-1.1000E-04	9.8900E-06

Table 12

FIG. 12A shows the axial chromatic aberration curve of the optical imaging lens of Embodiment 6, which represents the deviation of the focusing point of light of different wavelengths after passing through the lens. FIG. 12B shows the astigmatism curve of the optical imaging lens of Example 6, which represents meridional field curvature and sagittal field curvature. FIG. 12C shows a distortion curve of the optical imaging lens of Embodiment 6, which represents the distortion magnitude values corresponding to different field angles. FIG. 12D shows the chromatic aberration curve of magnification of the optical imaging lens of Example 6, which represents the deviation of different image heights on the imaging surface 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.

Example 7

Hereinafter, an optical imaging lens according to Embodiment 7 of the present application will be described with reference to FIGS. 13 to 14D. FIG. 13 shows a schematic structural diagram of an optical imaging lens according to Embodiment 7 of the present application.

As shown in FIG. 13, the optical imaging lens includes in order from the object side to the image side along the optical axis: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, and a fifth lens E5. , Filter E6 and imaging surface S13.

The first lens E1 has a positive refractive power, the object side surface S1 is a convex surface, and the image side surface S2 is a concave surface. The second lens E2 has a negative refractive power, the object side surface S3 is a convex surface, and the image side surface S4 is a concave surface. The third lens E3 has a positive refractive power, the object side surface S5 is a convex surface, and the image side surface S6 is a convex surface. The fourth lens E4 has a positive refractive power, the object side surface S7 is a convex surface, and the image side surface S8 is a convex surface. The fifth lens E5 has a negative refractive power, the object side surface S9 is a concave surface, and the image side surface S10 is a concave surface. The filter E8 has an object side surface S11 and an image side surface 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 embodiment, the total effective focal length of the optical imaging lens f=12.80mm, the distance from the object side S1 of the first lens E1 to the imaging plane S13 on the optical axis TTL=12.95mm, the effective pixel area on the imaging plane S13 The half of the angular line is ImgH=2.61mm, and the maximum field of view of the optical imaging lens FOV=22.8°.

Table 13 shows the basic parameter table of the optical imaging lens of Embodiment 7, wherein the units of the radius of curvature, thickness/distance, and focal length are all millimeters (mm). Table 14 shows the coefficients of higher-order terms that can be used for each aspheric mirror in Example 7.

Table 13

Face number	A4	A6	A8	A10	A12	A14	A16	A18	A20
S1	1.7200E-04	2.2006E-04	-3.7000E-04	4.1700E-04	-2.9000E-04	1.2100E-04	-3.1000E-05	4.3000E-06	-2.6000E-07
S2	4.4380E-03	5.6027E-03	-8.5700E-03	1.1417E-02	-9.5800E-03	4.6240E-03	-1.1400E-03	8.2500E-05	9.5000E-06
S3	-1.9980E-02	9.2087E-03	-1.5170E-02	2.3884E-02	-2.4580E-02	1.5407E-02	-5.7300E-03	1.1420E-03	-9.2000E-05
S4	5.6395E-02	-7.8682E-02	8.6997E-02	-8.0380E-02	5.6312E-02	-2.8070E-02	9.2620E-03	-1.8100E-03	1.5800E-04
S7	-4.5150E-02	4.7352E-02	-1.0076E-01	1.3606E-01	-1.1963E-01	6.7288E-02	-2.3180E-02	4.3830E-03	-3.4000E-04
S8	-1.0976E-01	2.2091E-01	-3.6592E-01	3.9648E-01	-2.9231E-01	1.4488E-01	-4.5770E-02	8.2400E-03	-6.4000E-04
S9	-1.2904E-01	3.0762E-01	-4.9331E-01	4.9690E-01	-3.3481E-01	1.5166E-01	-4.4180E-02	7.4480E-03	-5.5000E-04
S10	-8.9000E-03	5.9413E-02	-1.1105E-01	1.0686E-01	-6.3230E-02	2.3661E-02	-5.4200E-03	6.8900E-04	-3.7000E-05

Table 14

FIG. 14A shows the axial chromatic aberration curve of the optical imaging lens of Embodiment 7, which represents the deviation of the focusing point of light of different wavelengths after passing through the lens. Fig. 14B shows the astigmatism curve of the optical imaging lens of Example 7, which represents meridional field curvature and sagittal field curvature. FIG. 14C shows a distortion curve of the optical imaging lens of Embodiment 7, which represents the distortion magnitude values corresponding to different field angles. FIG. 14D shows the chromatic aberration curve of magnification of the optical imaging lens of Example 7, which represents the deviation of different image heights on the imaging surface after light passes through the lens. According to FIGS. 14A to 14D, it can be seen that the optical imaging lens provided in Embodiment 7 can achieve good imaging quality.

Example 8

Hereinafter, an optical imaging lens according to Embodiment 8 of the present application will be described with reference to FIGS. 15 to 16D. FIG. 15 shows a schematic structural diagram of an optical imaging lens according to Embodiment 8 of the present application.

As shown in FIG. 15, the optical imaging lens includes in order from the object side to the image side along the optical axis: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, and a fifth lens E5. , Filter E6 and imaging surface S13.

The first lens E1 has a positive refractive power, the object side surface S1 is a convex surface, and the image side surface S2 is a concave surface. The second lens E2 has a negative refractive power, the object side surface S3 is a convex surface, and the image side surface S4 is a concave surface. The third lens E3 has a positive refractive power, the object side surface S5 is a convex surface, and the image side surface S6 is a convex surface. The fourth lens E4 has a positive refractive power, the object side surface S7 is a concave surface, and the image side surface S8 is a convex surface. The fifth lens E5 has a negative refractive power, the object side surface S9 is a concave surface, and the image side surface S10 is a convex surface. The filter E8 has an object side surface S11 and an image side surface 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 embodiment, the total effective focal length of the optical imaging lens f=13.06mm, the distance from the object side S1 of the first lens E1 to the imaging plane S13 on the optical axis TTL=12.90mm, the effective pixel area on the imaging plane S13 The half of the angular line length is ImgH=2.65mm, and the maximum field of view of the optical imaging lens FOV=22.7°.

Table 15 shows the basic parameter table of the optical imaging lens of Embodiment 8, wherein the units of the radius of curvature, thickness/distance, and focal length are all millimeters (mm). Table 16 shows the coefficients of higher-order terms that can be used for each aspheric mirror in Example 8.

Table 15

Face number	A4	A6	A8	A10	A12	A14	A16	A18	A20
S1	-8.0000E-05	2.2200E-04	-4.1000E-04	4.4800E-04	-2.9000E-04	1.1800E-04	-2.9000E-05	3.8100E-06	-2.1000E-07
S2	8.7120E-03	-1.4000E-03	3.2260E-03	-4.7500E-03	3.2760E-03	-7.9000E-04	-2.1000E-04	1.2800E-04	-1.5000E-05
S3	-1.2380E-02	-2.8000E-05	1.7010E-03	-3.5800E-03	2.8680E-03	-8.6000E-04	-1.5000E-04	1.2800E-04	-1.7000E-05
S4	5.4071E-02	-6.4090E-02	6.8192E-02	-6.9840E-02	5.8166E-02	-3.4960E-02	1.3746E-02	-3.1300E-03	3.1000E-04
S7	-2.1900E-02	2.8998E-02	-9.0360E-02	1.4807E-01	-1.5282E-01	9.8517E-02	-3.8220E-02	8.0740E-03	-7.0000E-04

S8	-1.0031E-01	1.9615E-01	-4.0122E-01	5.4315E-01	-4.8842E-01	2.8408E-01	-1.0176E-01	2.0284E-02	-1.7100E-03
S9	-1.3990E-01	2.6676E-01	-4.8958E-01	6.2595E-01	-5.4333E-01	3.1007E-01	-1.1016E-01	2.1947E-02	-1.8700E-03
S10	-4.7610E-02	5.0508E-02	-5.7630E-02	4.7266E-02	-2.6280E-02	9.5930E-03	-2.1800E-03	2.7900E-04	-1.5000E-05

Table 16

FIG. 16A shows the axial chromatic aberration curve of the optical imaging lens of Example 8, which represents the deviation of the focal point of light rays of different wavelengths after passing through the lens. FIG. 16B shows the astigmatism curve of the optical imaging lens of Example 8, which represents meridional field curvature and sagittal field curvature. FIG. 16C shows a distortion curve of the optical imaging lens of Embodiment 8, which represents the distortion magnitude values corresponding to different field angles. 16D shows the chromatic aberration curve of magnification of the optical imaging lens of Example 8, which represents the deviation of different image heights on the imaging surface after light passes through the lens. According to FIGS. 16A to 16D, it can be seen that the optical imaging lens provided in Embodiment 8 can achieve good imaging quality.

In summary, Examples 1 to 8 satisfy the relationships shown in Table 17 respectively.

Conditional/Example	1	2	3	4	5	6	7	8
ImgH/f	0.19	0.19	0.19	0.20	0.20	0.20	0.20	0.20
f(mm)	14.44	14.35	13.50	13.30	13.13	13.23	12.80	13.06
(R1+R5)/(f1+f3)	0.38	0.37	0.36	0.32	0.49	0.47	0.57	0.50
f2/f5	0.92	0.90	0.70	0.29	1.31	0.69	0.66	0.68
FOV(°)	21.0	21.2	21.0	22.9	22.9	22.5	22.8	22.7
TTL/f	0.88	0.88	0.94	0.98	0.97	0.97	1.01	0.99
R4/(R8+R9)	-0.50	-0.55	-0.48	-0.25	-0.22	-0.38	-0.14	-0.35
CT1/TTL×10	2.00	2.02	2.07	1.96	2.23	2.20	2.08	2.25
f123/f45	-0.55	-0.53	-0.39	-0.39	-0.78	-0.48	-0.57	-0.52
T34/BFL	0.50	0.51	0.30	0.24	0.34	0.30	0.26	0.28
SAG31/SAG11	0.55	0.60	0.64	0.74	1.20	0.56	0.52	0.59
(SAG51+SAG52)/(SAG41+SAG42)	0.73	0.73	0.62	0.68	0.29	0.84	0.76	0.83

Table 17

The above description is only a preferred embodiment of the present application and an explanation 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 solutions formed by the specific combination of the above technical features, and should also cover the technical solutions described above without departing from the concept of the invention. Or other technical solutions formed by any combination of its equivalent features. For example, the above-mentioned features and the technical features disclosed in this application (but not limited to) with similar functions are mutually replaced to form a technical solution.

Claims (28)

1. An optical imaging lens, characterized in that it includes in order from the object side to the image side along the optical axis:

   A first lens with positive refractive power;

   A second lens with negative refractive power;

   A third lens with optical power;

   A fourth lens with optical power, the image side of which is convex; and

   The fifth lens with negative refractive power, whose object side is concave;

   Wherein, the total effective focal length f of the optical imaging lens satisfies: 12mm<f<20mm.
2. The optical imaging lens of claim 1, wherein half of the diagonal length ImgH of the effective pixel area on the imaging surface of the optical imaging lens and the total effective focal length f of the optical imaging lens satisfy: ImgH/ f<0.3.
3. The optical imaging lens of claim 1, wherein the curvature radius R1 of the object side surface of the first lens, the curvature radius R5 of the object side surface of the third lens, and the effective focal length f1 of the first lens And the effective focal length f3 of the third lens satisfies: 0.2<(R1+R5)/(f1+f3)<0.7.
4. The optical imaging lens of claim 1, wherein the effective focal length f2 of the second lens and the effective focal length f5 of the fifth lens satisfy: 0.2<f2/f5<1.4.
5. The optical imaging lens of claim 1, wherein the maximum field of view FOV of the optical imaging lens satisfies: FOV<25°.
6. The optical imaging lens of claim 1, wherein the distance from the object side of the first lens to the imaging surface of the optical imaging lens on the optical axis is TTL and the total effective distance of the optical imaging lens The focal length f satisfies: TTL/f<1.1.
7. The optical imaging lens of claim 1, wherein the curvature radius R4 of the image side surface of the second lens, the curvature radius R8 of the image side surface of the fourth lens and the object side surface of the fifth lens The radius of curvature R9 satisfies: -0.6<R4/(R8+R9)<-0.1.
8. The optical imaging lens according to claim 1, wherein the central thickness CT1 of the first lens on the optical axis and the object side surface of the first lens to the imaging surface of the optical imaging lens are in the same position. The distance TTL on the optical axis satisfies: 1.8<CT1/TTL×10<2.3.
9. The optical imaging lens of claim 1, wherein the combined focal length f123 of the first lens, the second lens, and the third lens is a combination of the fourth lens and the fifth lens The focal length f45 satisfies: -0.8<f123/f45<-0.3.
10. The optical imaging lens according to claim 1, wherein the separation distance T34 between the third lens and the fourth lens on the optical axis and the image side surface of the fifth lens to the optical imaging The distance BFL of the imaging surface of the lens on the optical axis satisfies: 0.2<T34/BFL<0.6.
11. The optical imaging lens of claim 1, wherein the on-axis distance SAG31 from the intersection of the object side surface of the third lens and the optical axis to the vertex of the effective radius of the object side surface of the third lens is equal to that of SAG31. The on-axis distance SAG11 from the intersection of the object side surface of the first lens and the optical axis to the vertex of the effective radius of the object side surface of the first lens satisfies: 0.5<SAG31/SAG11<1.3.
12. The optical imaging lens of claim 1, wherein the on-axis distance SAG 51 from the intersection of the object side surface of the fifth lens and the optical axis to the vertex of the effective radius of the object side surface of the fifth lens The on-axis distance SAG52 from the intersection of the image side surface of the fifth lens and the optical axis to the vertex of the effective radius of the image side of the fifth lens, the intersection of the object side surface of the fourth lens and the optical axis to the The on-axis distance SAG41 of the apex of the effective radius of the object side surface of the fourth lens and the intersection of the image side surface of the fourth lens and the optical axis to the on-axis distance of the effective radius apex of the image side surface of the fourth lens SAG42 Satisfies: 0.2<(SAG51+SAG52)/(SAG41+SAG42)<0.9.
13. The optical imaging lens according to any one of claims 1 to 12, wherein at least one of the first lens to the fifth lens is a glass lens.
14. The optical imaging lens according to any one of claims 1 to 12, wherein at least one of the first lens to the fifth lens has a spherical object side surface and an image side surface.
15. An optical imaging lens, characterized in that it includes in order from the object side to the image side along the optical axis:

    A first lens with positive refractive power;

    A second lens with negative refractive power;

    A third lens with optical power;

    A fourth lens with optical power, the image side of which is convex; and

    The fifth lens with negative refractive power, whose object side is concave;

    Wherein, the maximum field of view FOV of the optical imaging lens satisfies: FOV<25°.
16. The optical imaging lens according to claim 15, wherein half of the diagonal length ImgH of the effective pixel area on the imaging surface of the optical imaging lens and the total effective focal length f of the optical imaging lens satisfy: ImgH/ f<0.3.
17. The optical imaging lens of claim 16, wherein the total effective focal length f of the optical imaging lens satisfies: 12mm<f<20mm.
18. The optical imaging lens of claim 15, wherein the curvature radius R1 of the object side surface of the first lens, the curvature radius R5 of the object side surface of the third lens, and the effective focal length f1 of the first lens And the effective focal length f3 of the third lens satisfies: 0.2<(R1+R5)/(f1+f3)<0.7.
19. The optical imaging lens of claim 15, wherein the effective focal length f2 of the second lens and the effective focal length f5 of the fifth lens satisfy: 0.2<f2/f5<1.4.
20. The optical imaging lens of claim 15, wherein the distance from the object side of the first lens to the imaging surface of the optical imaging lens on the optical axis is TTL and the total effective distance of the optical imaging lens The focal length f satisfies: TTL/f<1.1.
21. The optical imaging lens of claim 15, wherein the curvature radius R4 of the image side surface of the second lens, the curvature radius R8 of the image side surface of the fourth lens and the object side surface of the fifth lens The radius of curvature R9 satisfies: -0.6<R4/(R8+R9)<-0.1.
22. The optical imaging lens according to claim 15, wherein the central thickness CT1 of the first lens on the optical axis and the object side surface of the first lens to the imaging surface of the optical imaging lens are in the same position. The distance TTL on the optical axis satisfies: 1.8<CT1/TTL×10<2.3.
23. The optical imaging lens of claim 15, wherein the combined focal length f123 of the first lens, the second lens, and the third lens is a combination of the fourth lens and the fifth lens The focal length f45 satisfies: -0.8<f123/f45<-0.3.
24. The optical imaging lens of claim 15, wherein the distance T34 between the third lens and the fourth lens on the optical axis and the image side surface of the fifth lens to the optical imaging The distance BFL of the imaging surface of the lens on the optical axis satisfies: 0.2<T34/BFL<0.6.
25. The optical imaging lens of claim 15, wherein the on-axis distance SAG31 from the intersection of the object side surface of the third lens and the optical axis to the vertex of the effective radius of the object side surface of the third lens is equal to that of SAG31. The on-axis distance SAG11 from the intersection of the object side surface of the first lens and the optical axis to the vertex of the effective radius of the object side surface of the first lens satisfies: 0.5<SAG31/SAG11<1.3.
26. The optical imaging lens of claim 15, wherein the on-axis distance SAG 51 from the intersection of the object side surface of the fifth lens and the optical axis to the vertex of the effective radius of the object side surface of the fifth lens The on-axis distance SAG52 from the intersection of the image side surface of the fifth lens and the optical axis to the vertex of the effective radius of the image side of the fifth lens, the intersection of the object side surface of the fourth lens and the optical axis to the The on-axis distance SAG41 of the apex of the effective radius of the object side of the fourth lens and the intersection of the image side surface of the fourth lens and the optical axis to the on-axis distance of the apex of the effective radius of the image side of the fourth lens SAG42 Satisfies: 0.2<(SAG51+SAG52)/(SAG41+SAG42)<0.9.
27. The optical imaging lens of any one of claims 15 to 26, wherein at least one of the first lens to the fifth lens is a glass lens.
28. The optical imaging lens according to any one of claims 15 to 26, wherein the object side surface and the image side surface of at least one of the first lens to the fifth lens are both spherical.

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