CN201903684U - Optical imaging lens group - Google Patents

Abstract

The utility model provides an optical imaging lens group, which includes a first lens, a second lens, a third lens, a fourth lens and a fifth lens in order from the object side to the image side. The first lens has a positive refractive power and its object side surface is a convex surface. The second lens has a negative refractive power. The image side surface of the fifth lens is a concave surface and has at least one inflection point. Through the above lens group configuration method, a large viewing angle can be obtained, the system sensitivity can be reduced, and a higher resolution can be obtained.

Description

Optical imaging lens group

technical field

The utility model relates to an optical imaging lens group, in particular to a miniaturized optical imaging lens group applied to electronic products.

Background technique

In recent years, with the rise of portable electronic products with photography functions, the demand for miniaturized photography lenses is increasing. The photosensitive components of general photographic lenses are nothing more than two types of photosensitive coupling devices (Charge Coupled Device, CCD) or complementary metal oxide semiconductor components (Complementary Metal-Oxide Semiconductor Sensor, CMOS Sensor), and with the advancement of semiconductor technology, making The pixel size of photosensitive components is shrinking, and miniaturized photographic lenses are gradually developing into the field of high pixels. Therefore, the requirements for image quality are also increasing.

Traditional miniaturized photographic lenses mounted on portable electronic products, as shown in U.S. Patent No. 7,355,801, mostly use a four-piece lens structure. However, due to smart phones (Smart Phone) and PDA (Personal Digital Assistant) The prevalence of such high-end mobile devices has led to the rapid increase in the number of pixels and image quality of miniaturized photographic lenses. The known four-piece lens group will not be able to meet higher-end photographic lens modules. The trend of high performance and thinning is developing, so there is an urgent need for an optical imaging lens group suitable for thin, light and portable electronic products, which has good imaging quality and does not make the total length of the lens too long.

Utility model content

The purpose of the utility model is to provide an optical imaging lens group, which is suitable for thin and portable electronic products, and has good imaging quality and does not make the total length of the lens too long.

According to the present invention, an optical imaging lens group is provided, which sequentially includes a first lens, a second lens, a third lens, a fourth lens and a fifth lens from the object side to the image side. The first lens has positive refractive power, and its object-side surface is convex. The second lens has negative refractive power. At least one of the object-side surface and the image-side surface of the fifth lens is provided with at least one inflection point, and is made of plastic material, and the image-side surface of the fifth lens is concave. Wherein, the focal length of the optical imaging lens group is f, the focal length of the first lens is f1, and the optical imaging lens group includes an aperture and an electronic photosensitive component, the distance from the aperture to the imaging surface is SL, and the object side of the first lens The distance from the surface to the imaging surface on the optical axis is TTL, and when a ray incident angle relative to the optical axis angle θ1 is 36.5 degrees and passes through the center of the aperture, the intersection of the ray and the image-side surface of the fifth lens is the vertical optical axis The distance is Yc1, and the electronic photosensitive component is arranged on the imaging surface, half of the diagonal length of the effective pixel area of the electronic photosensitive component is ImgH, which satisfies the following relational expression:

0.7<f/f1<2.0;

0.7<SL/TTL<1.2; and

0.3<Yc1/ImgH<0.9.

According to an embodiment of the present invention, the fourth lens is made of plastic material, the object-side surface is concave, the image-side surface is convex, and both the object-side surface and the image-side surface are aspherical.

According to an embodiment of the present invention, wherein the focal length of the optical imaging lens group is f, the focal length of the first lens is f1, and the focal length of the fourth lens is f4, and the following relationship is satisfied:

0.0<f/f4-f/f1<1.5.

According to an embodiment of the present invention, wherein the fifth lens has a radius of curvature of the object-side surface of R9 and a radius of curvature of the image-side surface of R10, which satisfy the following relationship:

-5<R10/R9<5.

According to an embodiment of the present invention, wherein the fifth lens has a radius of curvature of the object-side surface of R9 and a radius of curvature of the image-side surface of R10, which satisfy the following relationship:

-1.2<R10/R9<0.

According to an embodiment of the present invention, wherein the focal length of the optical imaging lens group is f, and the focal length of the fifth lens is f5, which satisfy the following relationship:

-3.2<f/f5<-1.6.

According to an embodiment of the present invention, wherein the focal length of the optical imaging lens group is f, and the focal length of the first lens is f1, which satisfy the following relationship:

1.0<f/f1<1.8.

According to an embodiment of the present invention, the curvature radius of the object-side surface of the first lens is R1, and the curvature radius of the image-side surface is R2, which satisfy the following relationship:

|R1/R2|<0.3.

According to an embodiment of the present invention, the dispersion coefficient of the second lens is V2, and the dispersion coefficient of the third lens is V3, which satisfy the following relationship:

|V2-V3|<10.

According to an embodiment of the present invention, wherein the focal length of the optical imaging lens group is f, and the focal length of the fourth lens is f4, which satisfy the following relationship:

1.3<f/f4<2.5.

According to an embodiment of the present invention, when the light incident angle relative to the optical axis angle θ2 is 37.2 degrees and passes through the center of the aperture, the distance between the intersection point of the light and the image-side surface of the fifth lens and the vertical optical axis is Yc2, the electronic photosensitive Half of the diagonal length of the effective pixel area of the component is ImgH, which satisfies the following relationship:

0.5<Yc2/ImgH<0.9.

According to an embodiment of the present invention, the dispersion coefficient of the first lens is V1, and the dispersion coefficient of the second lens is V2, which satisfy the following relationship:

28<V1-V2<45.

According to an embodiment of the present invention, wherein the fifth lens has a radius of curvature of the object-side surface of R9 and a radius of curvature of the image-side surface of R10, which satisfy the following relationship:

0.0<(R9+R10)/(R9-R10)<1.0.

According to an embodiment of the present invention, the radius of curvature of the object-side surface of the second lens is R3, and the radius of curvature of the image-side surface is R4, which satisfy the following relationship:

-1<R4/R3<0.

According to an embodiment of the present invention, wherein the distance from the object-side surface of the first lens to the imaging surface on the optical axis is TTL, half of the diagonal length of the effective pixel area of the electronic photosensitive element is ImgH, which satisfies the following Relational formula:

TTL/ImgH<1.75.

On the other hand, according to the present invention, an optical imaging lens group is provided, which sequentially includes a first lens, a second lens, a third lens, a fourth lens and a fifth lens from the object side to the image side. The first lens has positive refractive power, and its object-side surface is convex. The second lens has negative refractive power. The fourth lens has positive refractive power and has at least one aspherical surface. The fifth lens has negative refraction power, its image side surface is concave, and has at least one aspherical surface. Wherein, the curvature radius of the object-side surface of the fifth lens is R9, and the curvature radius of the image-side surface is R10, and the optical imaging lens group includes an aperture and an electronic photosensitive component, and the distance from the aperture to the imaging surface is SL, and the first lens The distance on the optical axis from the object side surface of the object to the imaging surface is TTL, and when a ray incident angle relative to the optical axis angle θ1 is 36.5 degrees and passes through the center of the aperture, the intersection point of the ray and the image side surface of the fifth lens is perpendicular The distance of the optical axis is Yc1, and the electronic photosensitive assembly is arranged on the imaging surface, half of the diagonal length of the effective pixel area of the electronic photosensitive assembly is ImgH, which satisfies the following relational expression:

-5<R10/R9<5;

0.7<SL/TTL<1.2; and

0.3<Yc1/ImgH<0.9.

According to another embodiment of the present invention, wherein the object-side surface of the fourth lens is concave, and the image-side surface is convex, and the object-side surface of the fifth lens is concave, and at least one of the object-side surface and the image-side surface is A surface is provided with at least one inflection point.

According to another embodiment of the present invention, wherein the radius of curvature of the object-side surface of the first lens is R1, the radius of curvature of the image-side surface is R2, the focal length of the optical imaging lens group is f, and the focal length of the fifth lens is f5 , which satisfy the following relation:

|R1/R2|<0.3; and

-3.2<f/f5<-1.6.

According to another embodiment of the present invention, wherein the focal length of the optical imaging lens group is f, the focal length of the first lens is f1, and the focal length of the fourth lens is f4, which satisfy the following relationship:

0.0<f/f4-f/f1<1.5.

According to another embodiment of the present invention, wherein the radius of curvature of the object-side surface of the second lens is R3, and the radius of curvature of the image-side surface is R4, which satisfy the following relationship:

-1<R4/R3<0.

According to another embodiment of the present invention, wherein the focal length of the optical imaging lens group is f, and the focal length of the fourth lens is f4, which satisfy the following relationship:

1.3<f/f4<2.5.

Furthermore, according to the present invention, another optical imaging lens group is provided, which sequentially includes a first lens, a second lens, a third lens, a fourth lens and a fifth lens from the object side to the image side. The first lens has positive refractive power, and its object-side surface is convex. The fourth lens has positive refractive power, its object-side surface is concave, its image-side surface is convex, and has at least one aspherical surface. The fifth lens has negative refractive power, at least one of the object-side surface and the image-side surface is provided with at least one inflection point, and the image-side surface is concave. Among them, FOV is the maximum viewing angle of the optical imaging lens group, the curvature radius of the object-side surface of the fifth lens is R9, and the curvature radius of the image-side surface is R10, which satisfy the following relationship:

FOV > 72; and

0<(R9+R10)/(R9-R10)<1.7.

According to yet another embodiment of the present invention, the material of the fifth lens is plastic, the curvature radius of the object side surface is R9, the curvature radius of the image side surface is R10, and the following relationship is satisfied:

-1<R10/R9<0.

According to yet another embodiment of the present invention, wherein the focal length of the optical imaging lens group is f, the focal length of the fourth lens is f4, and the focal length of the fifth lens is f5, which satisfy the following relationship:

-2.8<f/f5<-1.6; and

1.3<f/f4<2.5.

According to yet another embodiment of the present utility model, wherein the optical imaging lens group includes an aperture and an electronic photosensitive element, when the light incident angle relative to the optical axis angle θ2 is 37.2 degrees and passes through the center of the aperture, the light and the fifth lens The distance between the intersection point of the image side surface and its vertical optical axis is Yc2, half of the diagonal length of the effective pixel area of the electronic photosensitive component is ImgH, which satisfies the following relational formula:

0.5<Yc2/ImgH<0.9.

According to still another embodiment of the present utility model, wherein the dispersion coefficient of the first lens is V1, and the dispersion coefficient of the second lens is V2, which satisfy the following relationship:

28<V1-V2<42.

Wherein, the first lens has a positive refractive power, which can provide part of the refractive power required by the optical imaging lens group, and helps to shorten the total length of the optical imaging lens group. The second lens has a negative refractive power, which can correct the aberration produced by the first lens and correct the chromatic aberration produced by the optical imaging lens group. The fourth lens has a positive refractive power, which can distribute the positive refractive power of the first lens to reduce the sensitivity of the overall optical imaging lens group. The fifth lens has a negative refractive power, which can keep the principal point of the optical imaging lens group away from the imaging surface, which is beneficial to shorten the total length of the optical imaging lens group and maintain the miniaturization of the lens.

When f/f1 satisfies the above relational expression, the refractive power of the first lens can control the total optical length of the overall optical imaging lens group, and can avoid high-order spherical aberration. When SL/TTL satisfies the above relationship, the optical imaging lens group can achieve a good balance between telecentricity and wide field of view.

When Yc1/ImgH satisfies the above relationship, it ensures that the optical imaging lens group has a sufficient field of view, and is conducive to suppressing the angle of off-axis field of view light incident on the photosensitive component, and can further correct the image of the off-axis field of view Difference.

When R10/R9 satisfies the above relationship, it can correct the astigmatism and distortion of the optical imaging lens group, and at the same time, it can effectively reduce the angle of light incident on the electronic photosensitive component, improve the photosensitive sensitivity of the electronic photosensitive component, and reduce the Possibility of the system to generate vignetting.

When the FOV satisfies the above relationship, the optical imaging lens group can provide a larger viewing angle to capture images of a wider range. And when (R9+R10)/(R9-R10) satisfies the above relational expression, the principal point of the optical imaging lens group can be kept away from the imaging surface, and the total optical length of the optical imaging lens group can be shortened to maintain the lens miniaturization.

Therefore, the optical imaging lens group provided by the present invention can have a large viewing angle, reduce system sensitivity, and obtain higher resolution.

Description of drawings

In order to make the above and other purposes, features, advantages and embodiments of the present invention more obvious and understandable, the accompanying drawings are described as follows:

FIG. 1 is a schematic diagram illustrating an optical imaging lens group according to Embodiment 1 of the present invention;

Figure 2 is, from left to right, the spherical aberration, astigmatism and distortion curves of the optical imaging lens group in Figure 1;

FIG. 3 is a schematic diagram illustrating the incident light of the optical imaging lens group according to the embodiment of FIG. 1;

FIG. 4 is a schematic diagram illustrating another angle of light incident to the optical imaging lens group according to the embodiment of FIG. 1;

5 is a schematic diagram illustrating an optical imaging lens group according to Embodiment 2 of the present invention;

Figure 6 is, from left to right, the spherical aberration, astigmatism and distortion curves of the optical imaging lens group in Figure 5;

7 is a schematic diagram illustrating an optical imaging lens group according to Embodiment 3 of the present invention;

Figure 8 is the spherical aberration, astigmatism and distortion curves of the optical imaging lens group in Figure 7 from left to right;

9 is a schematic diagram illustrating an optical imaging lens group according to Embodiment 4 of the present invention;

Figure 10 is the spherical aberration, astigmatism and distortion curves of the optical imaging lens group in Figure 9 from left to right;

11 is a schematic diagram illustrating an optical imaging lens group according to Embodiment 5 of the present invention;

Figure 12 is the spherical aberration, astigmatism and distortion curves of the optical imaging lens group in Figure 11 from left to right;

13 is a schematic diagram illustrating an optical imaging lens group according to Embodiment 6 of the present invention;

Figure 14 is the spherical aberration, astigmatism and distortion curves of the optical imaging lens group in Figure 13 from left to right;

15 is a schematic diagram illustrating an optical imaging lens group according to Embodiment 7 of the present invention;

Figure 16 is the spherical aberration, astigmatism and distortion curves of the optical imaging lens group in Figure 15 from left to right;

17 is a schematic diagram illustrating an optical imaging lens group according to Embodiment 8 of the present invention;

FIG. 18 is the graphs of spherical aberration, astigmatism and distortion of the optical imaging lens group in FIG. 17 from left to right.

[Description of main component symbols]

Aperture: 100, 200, 300, 400, 500, 600, 700, 800

First lens: 110, 210, 310, 410, 510, 610, 710, 810

Object side surface: 111, 211, 311, 411, 511, 611, 711, 811

Image side surface: 112, 212, 312, 412, 512, 612, 712, 812

Second lens: 120, 220, 320, 420, 520, 620, 720, 820

Object side surface: 121, 221, 321, 421, 521, 621, 721, 821

Image side surface: 122, 222, 322, 422, 522, 622, 722, 822

Third lens: 130, 230, 330, 430, 530, 630, 730, 830

Object side surface: 131, 231, 331, 431, 531, 631, 731, 831

Image side surface: 132, 232, 332, 432, 532, 632, 732, 832

Fourth lens: 140, 240, 340, 440, 540, 640, 740, 840

Object side surface: 141, 241, 341, 441, 541, 641, 741, 841

Image side surface: 142, 242, 342, 442, 542, 642, 742, 842

Fifth lens: 150, 250, 350, 450, 550, 650, 750, 850

Object side surface: 151, 251, 351, 451, 551, 651, 751, 851

Image side surfaces 152, 252, 352, 452, 552, 652, 752, 852

Imaging surface: 160, 260, 360, 460, 560, 660, 760, 860

Infrared filter: 170, 270, 370, 470, 570, 670, 770, 870

f: focal length of the overall optical imaging lens group

f1: focal length of the first lens

f4: focal length of the fourth lens

f5: focal length of the fifth lens

R1: radius of curvature of the object-side surface of the first lens

R2: Radius of curvature of the image side surface of the first lens

R3: radius of curvature of the object-side surface of the second lens

R4: Radius of curvature of the image side surface of the second lens

R9: radius of curvature of the object-side surface of the fifth lens

R10: Radius of curvature of the image-side surface of the fifth lens

V1: Dispersion coefficient of the first lens

V2: Dispersion coefficient of the second lens

V3: Dispersion coefficient of the third lens

SL: the distance from the aperture to the imaging surface on the optical axis

TTL: the distance from the object-side surface of the first lens to the imaging plane on the optical axis

ImgH: half of the diagonal length of the effective pixel area of the electronic photosensitive component

FOV: the maximum viewing angle of the optical imaging lens group

Yc1: The incident angle of the ray relative to the optical axis is 36.5 degrees and passes through the center of the aperture, the distance between the intersection point of the ray and the image-side surface of the fifth lens and its vertical optical axis

Yc2: The incident angle of light relative to the optical axis is 37.2 degrees and passes through the center of the aperture. The distance between the intersection point of light and the image-side surface of the fifth lens and its vertical optical axis

Detailed ways

The utility model provides an optical imaging lens group, which sequentially includes a first lens, a second lens, a third lens, a fourth lens and a fifth lens from the object side to the image side, and an electronic photosensitive component is arranged on the imaging surface .

The first lens has positive refractive power, which can provide part of the refractive power required by the optical imaging lens group, and helps to shorten the total length of the optical imaging lens group. The object-side surface of the first lens is convex, and the image-side surface can be convex or concave. When both the object-side surface and the image-side surface of the first lens are convex (that is, a biconvex lens), the configuration of the first lens' refractive power can be strengthened, so that the total length of the optical imaging lens group can be shortened. When the object-side surface of the first lens is convex and the image-side surface is concave (that is, a crescent lens), the astigmatism of the optical imaging lens group can be corrected.

The second lens has a negative refractive power, which can effectively correct the aberration produced by the first lens with positive refractive power, and at the same time is beneficial to correct the chromatic aberration of the system.

When the fourth lens has positive refractive power, the positive refractive power of the first lens can be effectively distributed to reduce the sensitivity of the overall optical imaging lens group. The fourth lens may have an aspheric surface, and the object-side surface may be concave, and the image-side surface may be convex. Thereby, the astigmatism of the optical imaging lens group can be corrected.

The fifth lens is disposed between the fourth lens and the imaging surface. The fifth lens can be made of plastic, and the image-side surface is concave and has an aspheric surface. When it has a negative refractive power, the principal point of the optical imaging lens group can be kept away from the imaging surface, so as to shorten the total optical length of the optical imaging lens group and maintain the miniaturization of the lens. In addition, when the fifth lens has an inflection point, it can effectively suppress the angle at which the off-axis field of view light is incident on the photosensitive element, and can further correct the aberration of the off-axis field of view.

The focal length of the optical imaging lens group is f, and the focal length of the first lens is f1, which satisfy the following relationship:

0.7<f/f1<2.0,

Thereby, the distribution of the refractive power of the first lens is relatively balanced, the total optical length of the optical imaging lens group can be controlled, and high-order spherical aberration can be avoided at the same time.

In addition, the optical imaging lens group can further satisfy the following relationship:

1.0<f/f1<1.8.

Wherein, the optical imaging lens group is provided with an aperture, the distance from the aperture to the imaging surface on the optical axis is SL, and the distance from the object side surface of the first lens to the imaging surface on the optical axis is TTL, which satisfies the following relationship :

0.7<SL/TTL<1.2,

When the SL/TTL is less than 0.7, the angle of light incident on the electronic photosensitive component is too large, which may easily cause the disadvantages of poor photosensitive effect and excessive color difference. And when SL/TTL is greater than 1.2, the total length of the overall optical system will be too long. Therefore, when the optical imaging lens group satisfies 0.7<SL/TTL<1.2, it can obtain the advantages of telecentricity without making the overall length too long.

When a ray incident angle relative to the optical axis angle θ1 is 36.5 degrees and passes through the center of the aperture, the distance between the intersection point of the ray and the image-side surface of the fifth lens and the vertical optical axis is Yc1, and the diagonal length of the effective pixel area of the electronic photosensitive component is long Half of is ImgH, which satisfies the following relationship:

0.3<Yc1/ImgH<0.9,

Thereby, it can ensure that the optical imaging lens group has a sufficient angle of view, and it is beneficial to suppress the angle of the off-axis field of view light incident on the photosensitive element, and can further correct the aberration of the off-axis field of view.

The focal length f of the optical imaging lens group, the focal length f1 of the first lens, and the focal length f4 of the fourth lens satisfy the following relationship:

0.0<f/f4-f/f1<1.5,

Thereby, the refractive power configuration of the fourth lens and the first lens can be relatively balanced, so as to reduce the sensitivity of the optical imaging lens group.

When the radius of curvature of the object-side surface of the fifth lens is R9, and the radius of curvature of the image-side surface is R10, it satisfies the following relationship:

-5<R10/R9<5,

In this way, the astigmatism and distortion of the optical imaging lens group can be corrected, and at the same time, the angle of light incident on the electronic photosensitive component can be reduced, the sensitivity of the electronic photosensitive component can be improved, and the possibility of vignetting in the optical imaging lens group can be reduced. .

In addition, the optical imaging lens group can further satisfy the following relationship:

-1.2<R10/R9<0.

Furthermore, the optical imaging lens group can further satisfy the following relationship:

-1<R10/R9<0.

The focal length of the optical imaging lens group is f, and the focal length of the fifth lens is f5, which satisfy the following relationship:

-3.2<f/f5<-1.6,

Thereby, the fifth lens can balance and correct various aberrations generated by the optical imaging lens group, thereby enabling the optical imaging lens group to obtain higher imaging quality.

In addition, the optical imaging lens group can further satisfy the following relationship:

-2.8<f/f5<-1.6.

When the radius of curvature of the object-side surface of the first lens is R1, and the radius of curvature of the image-side surface is R2, it satisfies the following relationship:

|R1/R2|<0.3,

In this way, spherical aberration can be corrected, and the total length of the first lens to the lens can be shortened, thereby reducing the size of the lens.

The dispersion coefficient of the second lens is V2, and the dispersion coefficient of the third lens is V3, which satisfy the following relationship:

|V2-V3|<10,

Thereby, the ability of the optical imaging lens group to correct chromatic aberration can be improved.

The focal length of the optical imaging lens group is f, and the focal length of the fourth lens is f4, which satisfy the following relationship:

1.3<f/f4<2.5,

By controlling the size and configuration of the refractive power of the fourth lens, the aberration of the optical alignment lens group can be corrected and the sensitivity thereof can be reduced.

When a ray incident angle relative to the optical axis angle θ2 is 37.2 degrees and passes through the center of the aperture, the distance between the intersection point of the ray and the image-side surface of the fifth lens and the vertical optical axis is Yc2, and the diagonal of the effective pixel area of the electronic photosensitive component is long Half is ImgH, which satisfies the following relationship:

0.5<Yc2/ImgH<0.9.

When the dispersion coefficient of the first lens is V1, the dispersion coefficient of the second lens is V2, which satisfy the following relationship:

28<V1-V2<45,

Thereby, the chromatic aberration in the optical imaging lens group can be corrected.

In addition, the optical imaging lens group can further satisfy the following relationship:

28<V1-V2<42

When the object-side surface curvature radius R9 and the image-side surface curvature radius R10 of the fifth lens satisfy the following relationship:

0<(R9+R10)/(R9-R10)<1.7,

Thereby, the principal point of the optical imaging lens group can be kept away from the imaging plane, so as to shorten the total optical length of the optical imaging lens group and maintain the miniaturization of the lens.

In addition, the optical imaging lens group can further satisfy the following relationship:

0<(R9+R10)/(R9-R10)<1.0.

When the radius of curvature of the object-side surface of the second lens is R3 and the radius of curvature of the image-side surface is R4, it satisfies the following relationship:

-1<R4/R3<0,

In this way, the aberration generated by the first lens can be corrected, and the refractive power of the second lens can be balanced to avoid excessive high-order aberrations.

The distance on the optical axis from the object-side surface of the first lens to the imaging plane is TTL, half of the diagonal length of the effective pixel area of the electronic photosensitive component is ImgH, which satisfies the following relational formula:

TTL/ImgH<1.75,

Thereby, the miniaturization of the optical imaging lens group can be maintained, so that it can be mounted on thin, light and portable electronic products.

The maximum viewing angle of the optical imaging lens group is FOV, which meets the following ranges:

FOV > 72,

In this way, a larger viewing angle is provided, and images of a wider range can be captured.

According to the above-mentioned implementation manners, specific embodiments are proposed below and described in detail with reference to the drawings.

Please refer to Figure 1 and Figure 2, wherein Figure 1 shows a schematic diagram of an optical imaging lens group according to Embodiment 1 of the present invention, and Figure 2 shows the spherical aberration of the optical imaging lens group in Figure 1 from left to right , astigmatism and distortion curves. It can be seen from FIG. 1 that the optical imaging lens group of Embodiment 1 includes a first lens 110, an aperture 100, a second lens 120, a third lens 130, a fourth lens 140, a fifth lens 150, an infrared Filter (IR Filter) 170 and imaging surface 160.

To further illustrate, the material of the first lens 110 is plastic, which has positive refractive power, and the object-side surface 111 and the image-side surface 112 of the first lens 110 are both convex and aspherical.

The material of the second lens 120 is plastic, which has negative refractive power, and the object-side surface 121 and the image-side surface 122 of the second lens 120 are both concave and aspherical.

The material of the third lens 130 is plastic, which has negative refractive power, and the object-side surface 131 of the third lens 130 is concave, and the image-side surface 132 is convex, both of which are aspherical.

The material of the fourth lens 140 is plastic, which has positive refractive power, and the object-side surface 141 of the fourth lens 140 is concave, and the image-side surface 142 is convex, both of which are aspherical.

The material of the fifth lens 150 is plastic, which has negative refractive power, and the object-side surface 151 and the image-side surface 152 of the fifth lens 150 are both concave and aspherical. In addition, at least one of the object-side surface 151 and the image-side surface 152 of the fifth lens 150 is provided with at least one inflection point.

The material of the infrared filter 170 is glass, which is disposed between the fifth lens 150 and the imaging surface 160 and does not affect the focal length of the optical imaging lens group.

The curve equations of the aspheric surfaces of the above-mentioned lenses are expressed as follows:

$\mathrm{<span\; class="notranslate">\; x</span>}<span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; Y</span>}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; =</span><span\; class="notranslate">\; (</span>{\mathrm{<span\; class="notranslate">\; <figure-callout\; id="2"\; label="Y"\; filenames="HSA00000391547500181.png"\; state="\{\{state\}\}">Y</figure-callout></span>}}^{\mathrm{<span\; class="notranslate">\; 2</span>}}<span\; class="notranslate">\; /</span>\mathrm{<span\; class="notranslate">\; R</span>}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; /</span><span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; 1</span>}<span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; sqrt</span>}<span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; 1</span>}<span\; class="notranslate">\; -</span><span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; 1</span>}<span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; k</span>}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; \&times;</span>{<span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; Y</span>}<span\; class="notranslate">\; /</span>\mathrm{<span\; class="notranslate">\; R</span>}<span\; class="notranslate">\; )</span>}^{\mathrm{<span\; class="notranslate">\; 2</span>}}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; )</span><span\; class="notranslate">\; +</span>\underset{\mathrm{<span\; class="notranslate">\; i</span>}}{\mathrm{<span\; class="notranslate">\; \&Sigma;</span>}}<span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; Ai</span>}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; \&times;</span><span\; class="notranslate">\; (</span>{\mathrm{<span\; class="notranslate">\; Y</span>}}^{\mathrm{<span\; class="notranslate">\; i</span>}}<span\; class="notranslate">\; )</span>$

in:

X: the point on the aspheric surface whose distance from the optical axis is Y, and its relative height to the tangent plane tangent to the vertex on the aspheric optical axis;

Y: the distance between the point on the aspheric curve and the optical axis;

k: cone coefficient; and

Ai: i-th order aspherical coefficient.

In the optical imaging lens group of embodiment 1, the focal length of the overall optical imaging lens group is f, the aperture value (f-number) of the overall optical imaging lens group is Fno, half of the maximum viewing angle in the overall optical imaging lens group is HFOV, and its relationship is:

f=3.83mm;

Fno=2.70;

HFOV = 37.6 degrees.

In Embodiment 1, the dispersion coefficient of the first lens 110 is V1, the dispersion coefficient of the second lens 120 is V2, and the dispersion coefficient of the third lens 130 is V3, and the relationship is as follows:

V1-V2=32.5;

|V2-V3|=0.0.

In Embodiment 1, the radius of curvature of the object-side surface 111 of the first lens 110 is R1, the radius of curvature of the image-side surface 112 is R2, the radius of curvature of the object-side surface 121 of the second lens 120 is R3, and the radius of curvature of the image-side surface 122 is R4 , the radius of curvature of the object-side surface 151 of the fifth lens 150 is R9, and the radius of curvature of the image-side surface 152 is R10, and the relationship is as follows:

|R1/R2|=0.10;

R4/R3=-0.65;

R10/R9=-0.36;

(R9+R10)/(R9-R10)=0.47.

In Embodiment 1, the focal length of the first lens 110 is f1, the focal length of the fourth lens 140 is f4, and the focal length of the fifth lens 150 is f5. The relationship between them and the focal length f of the overall optical imaging lens group is respectively:

f/f1=1.44;

f/f4=2.15;

f/f5=-2.27;

f/f4-f/f1=0.71.

Referring to FIG. 3 and FIG. 4 , they are respectively schematic diagrams illustrating incident light of the optical imaging lens group according to the embodiment of FIG. 1 . As shown in FIG. 3 , when the light incident angle relative to the optical axis angle θ1 is 36.5 degrees and passes through the center of the aperture 100 , the distance between the light and the image-side surface 152 of the fifth lens 150 is Yc1 from the vertical optical axis. As shown in FIG. 4 , when the light incident angle relative to the optical axis angle θ2 is 37.2 degrees and passes through the center of the aperture 100 , the distance between the light and the image-side surface 152 of the fifth lens 150 is Yc2 from the vertical optical axis. In addition, in Embodiment 1, the optical imaging lens group is additionally provided with an electronic photosensitive element on the imaging surface 160, half of the diagonal length of the effective pixel area of the electronic photosensitive element is ImgH, and its relationship with Yc1 and Yc2 is as follows:

Yc1/ImgH=0.70;

Yc2/ImgH=0.73.

In Embodiment 1, the distance from the aperture 100 to the imaging surface 160 on the optical axis is SL, the distance from the object-side surface 111 of the first lens 110 to the imaging surface 160 on the optical axis is TTL, and the effective pixel area of the electronic photosensitive component is diagonally Half of the line length is ImgH, and its relationship is as follows:

SL/TTL=0.86;

TTL/ImgH = 1.54.

In conjunction with Table 1 and Table 2, Table 1 is the detailed structural data of Embodiment 1 in FIG. 1 , and Table 2 is the aspheric surface data in Embodiment 1.

Table I

Aspheric coefficient

Table II

In Table 1, the unit of curvature radius, thickness and focal length is mm, and the surface 0-14 represents the surface from the object side to the image side in sequence, while in Table 2, k represents the cone coefficient in the aspheric curve equation, A1 -A14 indicates the 1st-14th order aspheric coefficient of each surface.

Please refer to Figure 5 and Figure 6, wherein Figure 5 shows a schematic diagram of an optical imaging lens group according to Embodiment 2 of the present utility model, and Figure 6 shows the spherical aberration of the optical imaging lens group in Figure 5 from left to right , astigmatism and distortion curves. It can be seen from FIG. 5 that the optical imaging lens group of Embodiment 2 includes a first lens 210, a diaphragm 200, a second lens 220, a third lens 230, a fourth lens 240, a fifth lens 250, an infrared Optical filter (IR Filter) 270 and imaging plane 260.

To further illustrate, the material of the first lens 210 is plastic, which has positive refractive power, and the object-side surface 211 and the image-side surface 212 of the first lens 210 are both convex and aspherical.

The material of the second lens 220 is plastic, which has negative refractive power, and the object-side surface 221 and the image-side surface 222 of the second lens 220 are both concave and aspherical.

The material of the third lens 230 is plastic, which has negative refractive power, and the object-side surface 231 and the image-side surface 232 of the third lens 230 are both concave and aspherical.

The material of the fourth lens 240 is plastic, which has positive refractive power, and the object-side surface 241 of the fourth lens 240 is concave, and the image-side surface 242 is convex, both of which are aspherical.

The material of the fifth lens 250 is plastic, which has negative refractive power, and the object-side surface 251 and the image-side surface 252 of the fifth lens 250 are both concave and aspherical. In addition, at least one of the object-side surface 251 and the image-side surface 252 of the fifth lens 250 is provided with at least one inflection point.

The material of the infrared filter 270 is glass, which is disposed between the fifth lens 250 and the imaging surface 260 and does not affect the focal length of the optical imaging lens group.

The curve equation of the aspheric surface in embodiment 2 is expressed in the form of embodiment 1.

In the optical imaging lens group of embodiment 2, the focal length of the overall optical imaging lens group is f, the aperture value (f-number) of the overall optical imaging lens group is Fno, half of the maximum viewing angle in the overall optical imaging lens group is HFOV, and its relationship is:

f=3.83mm;

Fno=2.70;

HFOV = 37.4 degrees.

In Embodiment 2, the dispersion coefficient of the first lens 210 is V1, the dispersion coefficient of the second lens 220 is V2, and the dispersion coefficient of the third lens 230 is V3, and the relationship is as follows:

V1-V2=34.4;

|V2-V3|=2.0.

In Embodiment 2, the radius of curvature of the object-side surface 211 of the first lens 210 is R1, the radius of curvature of the image-side surface 212 is R2, the radius of curvature of the object-side surface 221 of the second lens 220 is R3, and the radius of curvature of the image-side surface 222 is R4 , the radius of curvature of the object-side surface 251 of the fifth lens 250 is R9, and the radius of curvature of the image-side surface 252 is R10, and the relationship is as follows:

|R1/R2|=0.02;

R4/R3=-0.14;

R10/R9=-0.27;

(R9+R10)/(R9-R10)=0.57.

In Embodiment 2, the focal length of the first lens 210 is f1, the focal length of the fourth lens 240 is f4, and the focal length of the fifth lens 250 is f5. The relationship between them and the focal length f of the overall optical imaging lens group is respectively:

f/f1=1.30;

f/f4=2.14;

f/f5=-2.23;

f/f4-f/f1=0.84.

In Embodiment 2, when the light incident angle relative to the optical axis angle θ1 is 36.5 degrees and passes through the center of the aperture 200, the distance between the light and the image-side surface 252 of the fifth lens 250 is perpendicular to the optical axis at a distance of Yc1, and when the light incident angle The relative optical axis angle θ2 is 37.2 degrees and passes through the center of the aperture 200. The distance between the intersection point of the light and the image side surface 252 of the fifth lens 250 is Yc2 (please refer to the schematic diagrams of FIGS. 3 and 4, θ1, θ2 , Yc1 and Yc2 represent positions, this embodiment does not additionally draw schematic diagrams). In addition, in Embodiment 2, the optical imaging lens group is additionally provided with an electronic photosensitive element on the imaging surface 260, half of the diagonal length of the effective pixel area of the electronic photosensitive element is ImgH, and its relationship with Yc1 and Yc2 is as follows:

Yc1/ImgH=0.68;

Yc2/ImgH=0.71.

In Embodiment 2, the distance from the aperture 200 to the imaging surface 260 on the optical axis is SL, the distance from the object-side surface 211 of the first lens 210 to the imaging surface 260 on the optical axis is TTL, and the effective pixel area of the electronic photosensitive component is diagonally Half of the line length is ImgH, and its relationship is as follows:

SL/TTL=0.87;

TTL/ImgH = 1.55.

Further refer to Table 3 and Table 4, wherein Table 3 is the detailed structural data of Embodiment 2 in FIG. 5 , and Table 4 is the aspheric surface data in Embodiment 2.

Table three

Aspheric coefficient

Table four

In Table 3, the unit of radius of curvature, thickness and focal length is mm, and the surface 0-14 represents the surface from the object side to the image side in sequence, and in Table 4, k represents the cone coefficient in the aspheric curve equation, A1 -A14 indicates the 1st-14th order aspheric coefficient of each surface.

Please refer to Figure 7 and Figure 8, wherein Figure 7 shows a schematic diagram of an optical imaging lens group according to Embodiment 3 of the present utility model, and Figure 8 shows the spherical aberration of the optical imaging lens group in Figure 7 from left to right , astigmatism and distortion curves. It can be seen from FIG. 7 that the optical imaging lens group of Embodiment 3 includes a first lens 310, a diaphragm 300, a second lens 320, a third lens 330, a fourth lens 340, a fifth lens 350, an infrared Optical filter (IR Filter) 370 and imaging surface 360.

To further illustrate, the material of the first lens 310 is plastic, which has positive refractive power, and the object-side surface 311 of the first lens 310 is convex, and the image-side surface 312 is concave, both of which are aspherical.

The material of the second lens 320 is plastic, which has negative refractive power, and the object-side surface 321 of the second lens 320 is convex, and the image-side surface 322 is concave, both of which are aspherical.

The material of the third lens 330 is plastic, which has negative refractive power, and the object-side surface 331 of the third lens 330 is concave, and the image-side surface 332 is convex, both of which are aspherical.

The material of the fourth lens 340 is plastic, which has positive refractive power, and the object-side surface 341 of the fourth lens 340 is concave, and the image-side surface 342 is convex, both of which are aspherical.

The material of the fifth lens 350 is plastic, which has negative refractive power, and the object-side surface 351 and the image-side surface 352 of the fifth lens 350 are both concave and aspherical. In addition, at least one of the object-side surface 351 and the image-side surface 352 of the fifth lens 350 is provided with at least one inflection point.

The material of the infrared filter 370 is glass, which is disposed between the fifth lens 350 and the imaging surface 360 and does not affect the focal length of the optical imaging lens group.

The curve equation of the aspheric surface in embodiment 3 is expressed in the form of embodiment 1.

In the optical imaging lens group of embodiment 3, the focal length of the overall optical imaging lens group is f, the aperture value (f-number) of the overall optical imaging lens group is Fno, half of the maximum viewing angle in the overall optical imaging lens group is HFOV, and its relationship is:

f=4.00mm;

Fno=2.85;

HFOV = 37.0 degrees.

In Embodiment 3, the dispersion coefficient of the first lens 310 is V1, the dispersion coefficient of the second lens 320 is V2, and the dispersion coefficient of the third lens 330 is V3, and the relationship is as follows:

V1-V2=32.1;

|V2-V3|=0.0.

In Embodiment 3, the radius of curvature of the object-side surface 311 of the first lens 310 is R1, the radius of curvature of the image-side surface 312 is R2, the radius of curvature of the object-side surface 321 of the second lens 320 is R3, and the radius of curvature of the image-side surface 322 is R4 , the radius of curvature of the object-side surface 351 of the fifth lens 350 is R9, and the radius of curvature of the image-side surface 352 is R10, and the relationship is as follows:

|R1/R2|=0.07;

R4/R3=0.05;

R10/R9=-0.72;

(R9+R10)/(R9-R10)=0.16.

In Embodiment 3, the focal length of the first lens 310 is f1, the focal length of the fourth lens 340 is f4, and the focal length of the fifth lens 350 is f5. The relationship between them and the focal length f of the overall optical imaging lens group is respectively:

f/f1=1.44;

f/f4=2.22;

f/f5=-2.22;

f/f4-f/f1=0.78.

In Embodiment 3, when the light incident angle relative to the optical axis angle θ1 is 36.5 degrees and passes through the center of the aperture 300, the distance between the intersection point of the light and the image-side surface 352 of the fifth lens 350 is Yc1, and when the light incident angle The relative optical axis angle θ2 is 37.2 degrees and passes through the center of the aperture 300. The distance between the intersection point of the light and the image side surface 352 of the fifth lens 350 is Yc2 (please refer to the schematic diagrams of FIGS. 3 and 4, θ1, θ2 , Yc1 and Yc2 represent positions, this embodiment does not additionally draw schematic diagrams). In addition, in Embodiment 3, the optical imaging lens group is additionally provided with an electronic photosensitive element on the imaging surface 360, half of the diagonal length of the effective pixel area of the electronic photosensitive element is ImgH, and its relationship with Yc1 and Yc2 is as follows:

Yc1/ImgH=0.68;

Yc2/ImgH=0.71.

In Embodiment 3, the distance from the aperture 300 to the imaging surface 360 on the optical axis is SL, the distance from the object-side surface 311 of the first lens 310 to the imaging surface 360 on the optical axis is TTL, and the effective pixel area of the electronic photosensitive component is diagonally Half of the line length is ImgH, and its relationship is as follows:

SL/TTL=0.88;

TTL/ImgH = 1.57.

Further refer to Table 5 and Table 6, wherein Table 5 is the detailed structural data of Embodiment 3 in FIG. 7 , and Table 6 is the aspheric surface data in Embodiment 3.

Table five

Aspheric coefficient

Table six

In Table 5, the unit of radius of curvature, thickness and focal length is mm, and the surface 0-14 represents the surface from the object side to the image side in sequence, and in Table 6, k represents the cone coefficient in the aspheric curve equation, A1 -A14 indicates the 1st-14th order aspheric coefficient of each surface.

Please refer to Figure 9 and Figure 10, wherein Figure 9 shows a schematic diagram of an optical imaging lens group according to Embodiment 4 of the present utility model, and Figure 10 shows the spherical aberration of the optical imaging lens group in Figure 9 from left to right , astigmatism and distortion curves. As can be seen from FIG. 9, the optical imaging lens group of Embodiment 4 includes a diaphragm 400, a first lens 410, a second lens 420, a third lens 430, a fourth lens 440, a fifth lens 450, an infrared Optical filter (IR Filter) 470 and imaging surface 460.

To further illustrate, the material of the first lens 410 is plastic, which has positive refractive power, and the object-side surface 411 and the image-side surface 412 of the first lens 410 are both convex and aspherical.

The material of the second lens 420 is plastic, which has negative refractive power, and the object-side surface 421 and the image-side surface 422 of the second lens 420 are both concave and aspherical.

The material of the third lens 430 is plastic, which has negative refractive power, and the object-side surface 431 of the third lens 430 is concave, and the image-side surface 432 is convex, both of which are aspherical.

The material of the fourth lens 440 is plastic, which has positive refractive power, and the object-side surface 441 of the fourth lens 440 is concave, and the image-side surface 442 is convex, both of which are aspherical.

The material of the fifth lens 450 is plastic, which has negative refractive power, and the object-side surface 451 and the image-side surface 452 of the fifth lens 450 are both concave and aspherical. In addition, at least one of the object-side surface 451 and the image-side surface 452 of the fifth lens 450 is provided with at least one inflection point.

The material of the infrared filter 470 is glass, which is disposed between the fifth lens 450 and the imaging surface 460 and does not affect the focal length of the optical imaging lens group.

The curve equation of the aspheric surface in embodiment 4 is expressed in the form of embodiment 1.

In embodiment 4, the focal length of the overall optical imaging lens group is f, the aperture value (f-number) of the overall optical imaging lens group is Fno, half of the maximum viewing angle in the overall optical imaging lens group is HFOV, and its relationship for:

f=3.90mm;

Fno=2.85;

HFOV = 37.2 degrees.

In Embodiment 4, the dispersion coefficient of the first lens 410 is V1, the dispersion coefficient of the second lens 420 is V2, and the dispersion coefficient of the third lens 430 is V3, and the relationship is as follows:

V1-V2=32.1;

|V2-V3|=0.0.

In Embodiment 4, the radius of curvature of the object-side surface 411 of the first lens 410 is R1, the radius of curvature of the image-side surface 412 is R2, the radius of curvature of the object-side surface 421 of the second lens 420 is R3, and the radius of curvature of the image-side surface 422 is R4 , the radius of curvature of the object-side surface 451 of the fifth lens 450 is R9, and the radius of curvature of the image-side surface 452 is R10, and the relationship is as follows:

|R1/R2|=0.02;

R4/R3=-0.08;

R10/R9=-0.74;

(R9+R10)/(R9-R10)=0.15.

In Embodiment 4, the focal length of the first lens 410 is f1, the focal length of the fourth lens 440 is f4, and the focal length of the fifth lens 450 is f5. The relationship between them and the focal length f of the overall optical imaging lens group is respectively:

f/f1=1.51;

f/f4=2.02;

f/f5=-2.17;

f/f4-f/f1=0.51.

In Embodiment 4, when the light incident angle relative to the optical axis angle θ1 is 36.5 degrees and passes through the center of the aperture 400, the distance between the intersection point of the light and the image-side surface 452 of the fifth lens 450 is Yc1, and when the light incident angle The relative optical axis angle θ2 is 37.2 degrees and passes through the center of the aperture 400. The distance between the intersection point of the ray and the image-side surface 452 of the fifth lens 450 is Yc2 (please refer to the schematic diagrams of FIG. 3 and FIG. 4, θ1, θ2 , Yc1 and Yc2 represent positions, this embodiment does not additionally draw schematic diagrams). In addition, in Embodiment 4, the optical imaging lens group is additionally provided with an electronic photosensitive element on the imaging surface 460, half of the diagonal length of the effective pixel area of the electronic photosensitive element is ImgH, and its relationship with Yc1 and Yc2 is as follows:

Yc1/ImgH=0.70;

Yc2/ImgH=0.72.

In Embodiment 4, the distance from the aperture 400 to the imaging surface 460 on the optical axis is SL, the distance from the object-side surface 411 of the first lens 410 to the imaging surface 460 on the optical axis is TTL, and the effective pixel area of the electronic photosensitive component is diagonally Half of the line length is ImgH, and its relationship is as follows:

SL/TTL=0.97;

TTL/ImgH = 1.52.

Further refer to Table 7 and Table 8, wherein Table 7 is the detailed structural data of Embodiment 4 in FIG. 9 , and Table 8 is the aspheric surface data in Embodiment 4.

Table Seven

Aspheric coefficient

table eight

In Table 7, the unit of radius of curvature, thickness and focal length is mm, and the surface 0-14 represents the surface from the object side to the image side in sequence, and in Table 8, k represents the cone coefficient in the aspheric curve equation, A1 -A14 indicates the 1st-14th order aspheric coefficient of each surface.

Please refer to Figure 11 and Figure 12, wherein Figure 11 shows a schematic diagram of an optical imaging lens group according to Embodiment 5 of the present utility model, and Figure 12 shows the spherical aberration of the optical imaging lens group in Figure 11 from left to right , astigmatism and distortion curves. It can be seen from FIG. 11 that the optical imaging lens group of Embodiment 5 includes a diaphragm 500, a first lens 510, a second lens 520, a third lens 530, a fourth lens 540, a fifth lens 550, an infrared ray lens group from the object side to the image side. Optical filter (IR Filter) 570 and imaging plane 560.

To further illustrate, the material of the first lens 510 is plastic, which has positive refractive power, and the object-side surface 511 and the image-side surface 512 of the first lens 510 are both convex and aspherical.

The material of the second lens 520 is plastic, which has negative refractive power, and the object-side surface 521 and the image-side surface 522 of the second lens 520 are both concave and aspherical.

The material of the third lens 530 is plastic, which has positive refractive power, and the object-side surface 531 of the third lens 530 is concave, and the image-side surface 532 is convex, both of which are aspherical.

The material of the fourth lens 540 is plastic, which has positive refractive power, and the object-side surface 541 of the fourth lens 540 is concave, and the image-side surface 542 is convex, both of which are aspherical.

The material of the fifth lens 550 is plastic, which has negative refractive power, and the object-side surface 551 and the image-side surface 552 of the fifth lens 550 are both concave and aspherical. In addition, at least one of the object-side surface 551 and the image-side surface 552 of the fifth lens 550 is provided with at least one inflection point.

The material of the infrared filter 570 is glass, which is disposed between the fifth lens 550 and the imaging surface 560 and does not affect the focal length of the optical imaging lens group.

The curve equation of the aspheric surface in embodiment 5 is expressed in the form of embodiment 1.

In embodiment 5, the focal length of the overall optical imaging lens group is f, the aperture value (f-number) of the overall optical imaging lens group is Fno, half of the maximum viewing angle in the overall optical imaging lens group is HFOV, and its relation for:

f=3.94mm;

Fno=2.90;

HFOV = 37.3 degrees.

In Embodiment 5, the dispersion coefficient of the first lens 510 is V1, the dispersion coefficient of the second lens 520 is V2, and the dispersion coefficient of the third lens 530 is V3, and the relationship is as follows:

V1-V2=34.5;

|V2-V3|=2.4.

In Embodiment 5, the radius of curvature of the object-side surface 511 of the first lens 510 is R1, the radius of curvature of the image-side surface 512 is R2, the radius of curvature of the object-side surface 521 of the second lens 520 is R3, and the radius of curvature of the image-side surface 522 is R4 , the radius of curvature of the object-side surface 551 of the fifth lens 550 is R9, and the radius of curvature of the image-side surface 552 is R10, and the relationship is as follows:

|R1/R2|=0.04;

R4/R3=-0.03;

R10/R9=-0.63;

(R9+R10)/(R9-R10)=0.23.

In Embodiment 5, the focal length of the first lens 510 is f1, the focal length of the fourth lens 540 is f4, and the focal length of the fifth lens 550 is f5. The relationship between them and the focal length f of the overall optical imaging lens group is respectively:

f/f1=1.46;

f/f4=1.63;

f/f5=-2.01;

f/f4-f/f1=0.17.

In Embodiment 5, when the light incident angle relative to the optical axis angle θ1 is 36.5 degrees and passes through the center of the aperture 500, the distance between the intersection point of the light and the image-side surface 552 of the fifth lens 550 is Yc1, and when the light incident angle The relative optical axis angle θ2 is 37.2 degrees and passes through the center of the aperture 500. The distance between the intersection point of the ray and the image side surface 552 of the fifth lens 550 is Yc2 (please refer to the schematic diagrams of FIGS. 3 and 4, θ1, θ2 , Yc1 and Yc2 represent positions, this embodiment does not additionally draw schematic diagrams). In addition, in Embodiment 5, the optical imaging lens group is additionally provided with an electronic photosensitive element on the imaging surface 560, half of the diagonal length of the effective pixel area of the electronic photosensitive element is ImgH, and its relationship with Yc1 and Yc2 is as follows:

Yc1/ImgH=0.71;

Yc2/ImgH=0.73.

In Embodiment 5, the distance from the aperture 500 to the imaging surface 560 on the optical axis is SL, the distance from the object-side surface 511 of the first lens 510 to the imaging surface 560 on the optical axis is TTL, and the effective pixel area of the electronic photosensitive component is diagonally Half of the line length is ImgH, and its relationship is as follows:

SL/TTL=0.97;

TTL/ImgH = 1.52.

In conjunction with Table 9 and Table 10, Table 9 is the detailed structural data of Embodiment 5 in FIG. 11 , and Table 10 is the aspheric surface data in Embodiment 5.

Table nine

Aspheric coefficient

table ten

In Table 9, the unit of curvature radius, thickness and focal length is mm, and the surface 0-14 represents the surface from the object side to the image side in sequence, and in Table 10, k represents the cone coefficient in the aspheric curve equation, A1 -A14 indicates the 1st-14th order aspheric coefficient of each surface.

Please refer to Figure 13 and Figure 14, wherein Figure 13 shows a schematic diagram of an optical imaging lens group according to Embodiment 6 of the present invention, and Figure 14 shows the spherical aberration of the optical imaging lens group in Figure 13 from left to right , astigmatism and distortion curves. It can be seen from FIG. 13 that the optical imaging lens group of Embodiment 6 includes a diaphragm 600, a first lens 610, a second lens 620, a third lens 630, a fourth lens 640, a fifth lens 650, an infrared Optical filter (IR Filter) 670 and imaging plane 660.

To further illustrate, the material of the first lens 610 is plastic, which has positive refractive power, and the object-side surface 611 and the image-side surface 612 of the first lens 610 are both convex and aspherical.

The material of the second lens 620 is plastic, which has negative refractive power, and the object-side surface 621 and the image-side surface 622 of the second lens 620 are both concave and aspherical.

The material of the third lens 630 is plastic, which has positive refractive power, and the object-side surface 631 of the third lens 630 is convex, and the image-side surface 632 is concave, both of which are aspherical.

The material of the fourth lens 640 is plastic, which has positive refractive power, and the object-side surface 641 of the fourth lens 640 is concave, and the image-side surface 642 is convex, both of which are aspherical.

The material of the fifth lens 650 is plastic, which has negative refractive power, and the object-side surface 651 and the image-side surface 652 of the fifth lens 650 are both concave and aspherical. In addition, at least one of the object-side surface 651 and the image-side surface 652 of the fifth lens 650 is provided with at least one inflection point.

The material of the infrared filter 670 is glass, which is disposed between the fifth lens 650 and the imaging surface 660 and does not affect the focal length of the optical imaging lens group.

The curve equation of the aspheric surface in embodiment 6 is expressed in the form of embodiment 1.

In embodiment 6, the focal length of the overall optical imaging lens group is f, the aperture value (f-number) of the overall optical imaging lens group is Fno, half of the maximum viewing angle in the overall optical imaging lens group is HFOV, and its relationship for:

f=3.90mm;

Fno=2.90;

HFOV = 37.3 degrees.

In Embodiment 6, the dispersion coefficient of the first lens 610 is V1, the dispersion coefficient of the second lens 620 is V2, and the dispersion coefficient of the third lens 630 is V3, and the relationship is as follows:

V1-V2=35.1;

|V2-V3|=2.4.

In Embodiment 6, the radius of curvature of the object-side surface 611 of the first lens 610 is R1, the radius of curvature of the image-side surface 612 is R2, the radius of curvature of the object-side surface 621 of the second lens 620 is R3, and the radius of curvature of the image-side surface 622 is R4 , the radius of curvature of the object-side surface 651 of the fifth lens 650 is R9, and the radius of curvature of the image-side surface 652 is R10, and the relationship is as follows:

|R1/R2|=0.07;

R4/R3=-0.27;

R10/R9=-0.58;

(R9+R10)/(R9-R10)=0.27.

In Embodiment 6, the focal length of the first lens 610 is f1, the focal length of the fourth lens 640 is f4, and the focal length of the fifth lens 650 is f5. The relationship between them and the focal length f of the overall optical imaging lens group is respectively:

f/f1=1.44;

f/f4=1.56;

f/f5=-1.97;

f/f4-f/f1=0.12.

In Embodiment 6, when the light incident angle relative to the optical axis angle θ1 is 36.5 degrees and passes through the center of the aperture 600, the distance between the intersection point of the light and the image-side surface 652 of the fifth lens 650 is Yc1, and when the light incident angle The relative optical axis angle θ2 is 37.2 degrees and passes through the center of the aperture 600. The distance between the intersection point of the ray and the image side surface 652 of the fifth lens 650 is Yc2 (please refer to the schematic diagrams of FIGS. 3 and 4, θ1, θ2 , Yc1 and Yc2 represent positions, this embodiment does not additionally draw schematic diagrams). In addition, in Embodiment 6, the optical imaging lens group is additionally provided with an electronic photosensitive element on the imaging surface 660, half of the diagonal length of the effective pixel area of the electronic photosensitive element is ImgH, and its relationship with Yc1 and Yc2 is as follows:

Yc1/ImgH=0.72;

Yc2/ImgH=0.75.

In Embodiment 6, the distance from the aperture 600 to the imaging surface 660 on the optical axis is SL, the distance from the object-side surface 611 of the first lens 610 to the imaging surface 660 on the optical axis is TTL, and the effective pixel area of the electronic photosensitive component is diagonally Half of the line length is ImgH, and its relationship is as follows:

SL/TTL=0.97;

TTL/ImgH = 1.50.

In conjunction with Table 11 and Table 12, Table 11 is the detailed structural data of Embodiment 6 in FIG. 13 , and Table 12 is the aspheric surface data in Embodiment 6.

Table Eleven

Aspheric coefficient

Table 12

In Table 11, the unit of curvature radius, thickness and focal length is mm, and the surface 0-14 represents the surface from the object side to the image side in sequence, and in Table 12, k represents the cone coefficient in the aspheric curve equation , A1-A14 represent the 1st-14th order aspheric coefficients of each surface.

Please refer to Figure 15 and Figure 16, wherein Figure 15 shows a schematic diagram of an optical imaging lens group according to Embodiment 7 of the present utility model, and Figure 16 shows the spherical aberration of the optical imaging lens group in Figure 15 from left to right , astigmatism and distortion curves. It can be seen from FIG. 15 that the optical imaging lens group of Embodiment 7 includes a first lens 710, a diaphragm 700, a second lens 720, a third lens 730, a fourth lens 740, a fifth lens 750, an infrared Optical filter (IR Filter) 770 and imaging plane 760.

To further illustrate, the material of the first lens 710 is plastic, which has positive refractive power, and the object-side surface 711 of the first lens 710 is convex, and the image-side surface 712 is concave, both of which are aspherical.

The material of the second lens 720 is plastic, which has negative refractive power, and the object-side surface 721 of the second lens 720 is convex, and the image-side surface 722 is concave, both of which are aspherical.

The material of the third lens 730 is plastic, which has negative refractive power, and the object-side surface 731 and the image-side surface 732 of the third lens 730 are both concave and aspherical.

The material of the fourth lens 740 is plastic, which has positive refractive power, and the object-side surface 741 of the fourth lens 740 is concave, and the image-side surface 742 is convex, both of which are aspherical.

The material of the fifth lens 750 is plastic, which has negative refractive power, and the object-side surface 751 and the image-side surface 752 of the fifth lens 750 are both concave and aspherical. In addition, at least one of the object-side surface 751 and the image-side surface 752 of the fifth lens 750 is provided with at least one inflection point.

The material of the infrared filter 770 is glass, which is disposed between the fifth lens 750 and the imaging surface 760 and does not affect the focal length of the optical imaging lens group.

The curve equation of the aspheric surface in embodiment 7 is expressed in the form of embodiment 1.

In embodiment 7, the focal length of the overall optical imaging lens group is f, the aperture value (f-number) of the overall optical imaging lens group is Fno, half of the maximum viewing angle in the overall optical imaging lens group is HFOV, and its relationship for:

f=3.45mm;

Fno=2.90;

HFOV = 40.8 degrees.

In Embodiment 7, the dispersion coefficient of the first lens 710 is V1, the dispersion coefficient of the second lens 720 is V2, and the dispersion coefficient of the third lens 730 is V3, and the relationship is as follows:

V1-V2=34.4;

|V2-V3|=0.0.

In Embodiment 7, the radius of curvature of the object-side surface 711 of the first lens 710 is R1, the radius of curvature of the image-side surface 712 is R2, the radius of curvature of the object-side surface 721 of the second lens 720 is R3, and the radius of curvature of the image-side surface 722 is R4 , the radius of curvature of the object-side surface 751 of the fifth lens 750 is R9, and the radius of curvature of the image-side surface 752 is R10, and the relationship is as follows:

|R1/R2|=0.07;

R4/R3=0.24;

R10/R9=-0.22;

(R9+R10)/(R9-R10)=0.63.

In Embodiment 7, the focal length of the first lens 710 is f1, the focal length of the fourth lens 740 is f4, and the focal length of the fifth lens 750 is f5. The relationship between them and the focal length f of the overall optical imaging lens group is respectively:

f/f1=1.16;

f/f4=2.07;

f/f5=-2.14;

f/f4-f/f1=0.91.

In Embodiment 7, when the light incident angle relative to the optical axis angle θ1 is 36.5 degrees and passes through the center of the aperture 700, the distance between the intersection point of the light and the image-side surface 752 of the fifth lens 750 is Yc1, and when the light incident angle The relative optical axis angle θ2 is 37.2 degrees and passes through the center of the aperture 700. The distance between the intersection point of the ray and the image side surface 752 of the fifth lens 750 and its vertical optical axis is Yc2 (please refer to the schematic diagrams of FIGS. 3 and 4, θ1, θ2 , Yc1 and Yc2 represent positions, this embodiment does not additionally draw schematic diagrams). In addition, in Embodiment 7, the optical imaging lens group is additionally provided with an electronic photosensitive element on the imaging surface 760, half of the diagonal length of the effective pixel area of the electronic photosensitive element is ImgH, and its relationship with Yc1 and Yc2 is as follows:

Yc1/ImgH=0.64;

Yc2/ImgH=0.66.

In Embodiment 7, the distance from the aperture 700 to the imaging surface 760 on the optical axis is SL, the distance from the object-side surface 711 of the first lens 710 to the imaging surface 760 on the optical axis is TTL, and the effective pixel area of the electronic photosensitive component is diagonally Half of the line length is ImgH, and its relationship is as follows:

SL/TTL=0.88;

TTL/ImgH = 1.43.

Further refer to Table 13 and Table 14, wherein Table 13 is the detailed structural data of Embodiment 7 in FIG. 15 , and Table 14 is the aspherical data in Embodiment 7.

Table 13

Aspheric coefficient

Table Fourteen

In Table 13, the unit of curvature radius, thickness and focal length is mm, and the surface 0-14 represents the surface from the object side to the image side in sequence, and in Table 14, k represents the cone coefficient in the aspheric curve equation , A1-A14 represent the 1st-14th order aspheric coefficients of each surface.

Please refer to Figure 17 and Figure 18, wherein Figure 17 shows a schematic diagram of an optical imaging lens group according to Embodiment 8 of the present invention, and Figure 18 shows the spherical aberration of the optical imaging lens group in Figure 17 from left to right , astigmatism and distortion curves. It can be seen from FIG. 17 that the optical imaging lens group of Embodiment 8 includes a first lens 810, a second lens 820, a diaphragm 800, a third lens 830, a fourth lens 840, a fifth lens 850, and an infrared lens from the object side to the image side. Optical filter (IR Filter) 870 and imaging surface 860.

To further illustrate, the material of the first lens 810 is plastic, which has positive refractive power, and the object-side surface 811 and the image-side surface 812 of the first lens 810 are both convex and aspherical.

The material of the second lens 820 is plastic, which has negative refractive power, and the object-side surface 821 and the image-side surface 822 of the second lens 820 are both concave and aspherical.

The material of the third lens 830 is plastic, which has negative refractive power, and the object-side surface 831 of the third lens 830 is convex, and the image-side surface 832 is concave, both of which are aspherical.

The material of the fourth lens 840 is plastic, which has positive refractive power, and the object-side surface 841 of the fourth lens 840 is concave, and the image-side surface 842 is convex, both of which are aspherical.

The material of the fifth lens 850 is plastic, which has negative refractive power, and the object-side surface 851 and the image-side surface 852 of the fifth lens 850 are both concave and aspherical. In addition, at least one of the object-side surface 851 and the image-side surface 852 of the fifth lens 850 is provided with at least one inflection point.

The material of the infrared filter 870 is glass, which is disposed between the fifth lens 850 and the imaging surface 860 and does not affect the focal length of the optical imaging lens group.

The curve equation of the aspheric surface in embodiment 8 is expressed in the form of embodiment 1.

In embodiment 8, the focal length of the overall optical imaging lens group is f, the aperture value (f-number) of the overall optical imaging lens group is Fno, half of the maximum viewing angle in the overall optical imaging lens group is HFOV, and its relationship for:

f=3.61mm;

Fno=2.50;

HFOV = 38.6 degrees.

In Embodiment 8, the dispersion coefficient of the first lens 810 is V1, the dispersion coefficient of the second lens 820 is V2, and the dispersion coefficient of the third lens 830 is V3, and the relationship is as follows:

V1-V2=32.5;

|V2-V3|=0.0.

In Embodiment 8, the radius of curvature of the object-side surface 811 of the first lens 810 is R1, the radius of curvature of the image-side surface 812 is R2, the radius of curvature of the object-side surface 821 of the second lens 820 is R3, and the radius of curvature of the image-side surface 822 is R4 , the radius of curvature of the object-side surface 851 of the fifth lens 850 is R9, and the radius of curvature of the image-side surface 852 is R10, and the relationship is as follows:

|R1/R2|=0.17;

R4/R3=-2.00;

R10/R9=-0.05;

(R9+R10)/(R9-R10)=0.90.

In Embodiment 8, the focal length of the first lens 810 is f1, the focal length of the fourth lens 840 is f4, and the focal length of the fifth lens 850 is f5. The relationship between them and the focal length f of the overall optical imaging lens group is respectively:

f/f1=1.21;

f/f4=1.98;

f/f5=-1.97;

f/f4-f/f1=0.77.

In Embodiment 8, when the light incident angle relative to the optical axis angle θ1 is 36.5 degrees and passes through the center of the aperture 800, the distance between the light and the image-side surface 852 of the fifth lens 850 is perpendicular to the optical axis at a distance of Yc1, and when the light incident angle The relative optical axis angle θ2 is 37.2 degrees and passes through the center of the aperture 800. The distance between the intersection point of the light and the image side surface 852 of the fifth lens 850 is Yc2 (please refer to the schematic diagrams of FIGS. 3 and 4, θ1, θ2 , Yc1 and Yc2 represent positions, this embodiment does not additionally draw schematic diagrams). In addition, in Embodiment 8, the optical imaging lens group is additionally provided with an electronic photosensitive element on the imaging surface 860, half of the diagonal length of the effective pixel area of the electronic photosensitive element is ImgH, and its relationship with Yc1 and Yc2 is as follows:

Yc1/ImgH=0.65;

Yc2/ImgH=0.68.

In Embodiment 8, the distance from the aperture 800 to the imaging surface 860 on the optical axis is SL, the distance from the object-side surface 811 of the first lens 810 to the imaging surface 860 on the optical axis is TTL, and the effective pixel area of the electronic photosensitive component is diagonally Half of the line length is ImgH, and its relationship is as follows:

SL/TTL=0.77;

TTL/ImgH = 1.60.

In conjunction with Table 15 and Table 16, Table 15 is the detailed structural data of Embodiment 8 in Figure 17, and Table 16 is the aspherical data in Embodiment 8.

Table 15

Aspheric coefficient

Table 16

In Table 15, the unit of curvature radius, thickness and focal length is mm, and the surface 0-14 represents the surface from the object side to the image side in sequence, and in Table 16, k represents the cone coefficient in the aspheric curve equation , A1-A14 represent the 1st-14th order aspheric coefficients of each surface.

Table 1 to Table 16 show the different numerical changes of the embodiments of the optical imaging lens group of the present invention, but the numerical changes of the various embodiments of the present invention are all experimental results. Even if different numerical values are used, products with the same structure should still Belong to the protection category of the utility model. Table 17 is the numerical data corresponding to the relevant conditional expressions of the present invention for each embodiment.

Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Example 7 Example 8 f 3.83 3.83 4.00 3.90 3.94 3.90 3.45 3.61 Fno 2.70 2.70 2.85 2.85 2.90 2.90 2.90 2.50 HFOV 37.6 37.4 37.0 37.2 37.3 37.3 40.8 38.6 V1-V2 32.5 34.4 32.1 32.1 34.5 35.1 34.4 32.5 |V2-V3| 0.0 2.0 0.0 0.0 2.4 2.4 0.0 0.0 |R1/R2| 0.10 0.02 0.07 0.02 0.04 0.07 0.07 0.17 R4/R3 -0.65 -0.14 0.05 -0.08 -0.03 -0.27 0.24 -2.00 R10/R9 -0.36 -0.27 -0.72 -0.74 -0.63 -0.58 -0.22 -0.05 (R9+R10)/(R9-R10) 0.47 0.57 0.16 0.15 0.23 0.27 0.63 0.90 f/f1 1.44 1.30 1.44 1.51 146 1.44 1.16 1.21 f/f4 2.15 2.14 2.22 2.02 1.63 1.56 2.07 1.98 f/f5 -2.27 -2.23 -2.22 -2.17 -2.01 -1.97 -2.14 -1.97 f/f4-f/f1 0.71 0.84 0.78 0.51 0.17 0.12 0.91 0.77 Yc1/ImgH 0.70 0.68 0.68 0.70 0.71 0.72 0.64 0.65

Yc2/ImgH 0.73 0.71 0.71 0.72 0.73 0.75 0.66 0.68 SL/TTL 0.86 0.87 0.88 0.97 0.97 0.97 0.88 0.77 TTL/ImgH 1.54 1.55 1.57 1.52 1.52 1.50 1.43 1.60

Table 17

Although the present utility model has been disclosed as above in terms of implementation, it is not intended to limit the present utility model. Anyone familiar with the art can make various changes and modifications without departing from the spirit and scope of the present utility model. Therefore, the scope of protection of the present utility model should be as defined by the appended claims.

Claims (26)

1. An optical imaging lens group, characterized in that it comprises sequentially from the object side to the image side: A first lens with positive refractive power, and its object-side surface is convex; a second lens with negative refractive power; a third lens; a fourth lens; and A fifth lens, at least one of the object-side surface and the image-side surface is provided with at least one inflection point, which is made of plastic, and the image-side surface is concave; Wherein, the focal length of the optical imaging lens group is f, the focal length of the first lens is f1, and the optical imaging lens group includes an aperture and an electronic photosensitive component, and the distance between the aperture and an imaging surface on the optical axis is SL, the distance from the object-side surface of the first lens to the imaging surface on the optical axis is TTL, and when the light incident angle relative to the optical axis angle θ1 is 36.5 degrees and passes through the center of the aperture, the light and the fifth lens The distance of the vertical optical axis of the intersection point of the image side surface is Yc1, and the electronic photosensitive assembly is arranged on the imaging surface, and half of the diagonal length of the effective pixel area of the electronic photosensitive assembly is ImgH, which satisfies the following relational formula: 0.7<f/f1<2.0; 0.7<SL/TTL<1.2; and 0.3<Yc1/ImgH<0.9. 2. The optical imaging lens group according to claim 1, wherein the fourth lens is made of plastic material, its object-side surface is concave, and its image-side surface is convex, and its object-side surface and image-side surface are both is aspherical. 3. The optical imaging lens group according to claim 2, wherein the focal length of the optical imaging lens group is f, the focal length of the first lens is f1, and the focal length of the fourth lens is f4, and Satisfy the following relation: 0.0<f/f4-f/f1<1.5. 4. The optical imaging lens group according to claim 3, wherein the fifth lens has a radius of curvature of the object-side surface of R9 and a radius of curvature of the image-side surface of R10, which satisfy the following relationship: -5<R10/R9<5. 5. The optical imaging lens group according to claim 4, wherein the fifth lens has a radius of curvature of the object-side surface of R9 and a radius of curvature of the image-side surface of R10, which satisfy the following relationship: -1.2<R10/R9<0. 6. The optical imaging lens group according to claim 5, wherein the focal length of the optical imaging lens group is f, and the focal length of the fifth lens is f5, which satisfies the following relationship: -3.2<f/f5<-1.6. 7. The optical imaging lens group according to claim 4, wherein the focal length of the optical imaging lens group is f, and the focal length of the first lens is f1, which satisfies the following relationship: 1.0<f/f1<1.8. 8. The optical imaging lens group according to claim 7, wherein the first lens has a radius of curvature of the object-side surface of R1 and a radius of curvature of the image-side surface of R2, which satisfy the following relationship: |R1/R2|<0.3. 9. The optical imaging lens group according to claim 2, wherein the dispersion coefficient of the second lens is V2, and the dispersion coefficient of the third lens is V3, which satisfy the following relationship: |V2-V3|<10. 10. The optical imaging lens group according to claim 7, wherein the focal length of the optical imaging lens group is f, and the focal length of the fourth lens is f4, which satisfies the following relationship: 1.3<f/f4<2.5. 11. The optical imaging lens group according to claim 10, characterized in that, when the light incident angle relative to the optical axis angle θ2 is 37.2 degrees and passes through the center of the aperture, the intersection of the light and the image-side surface of the fifth lens is perpendicular The distance of the optical axis is Yc2, half of the diagonal length of the effective pixel area of the electronic photosensitive component is ImgH, which satisfies the following relational formula: 0.5<Yc2/ImgH<0.9. 12. The optical imaging lens group according to claim 3, wherein the dispersion coefficient of the first lens is V1, and the dispersion coefficient of the second lens is V2, which satisfy the following relationship: 28<V1-V2<45. 13. The optical imaging lens group according to claim 12, wherein the fifth lens has a radius of curvature of the object-side surface of R9 and a radius of curvature of the image-side surface of R10, which satisfy the following relationship: 0.0<(R9+R10)/(R9-R10)<1.0. 14. The optical imaging lens group according to claim 3, wherein the second lens has a radius of curvature of the object-side surface of R3 and a radius of curvature of the image-side surface of R4, which satisfy the following relationship: -1<R4/R3<0. 15. The optical imaging lens group according to claim 1, wherein the distance from the object-side surface of the first lens to the imaging surface on the optical axis is TTL, and the diagonal of the effective pixel area of the electronic photosensitive component is The long half is ImgH, which satisfies the following relationship: TTL/ImgH<1.75. 16. An optical imaging lens group, characterized in that it includes sequentially from the object side to the image side: A first lens with positive refractive power, and its object-side surface is convex; a second lens with negative refractive power; a third lens; A fourth lens has positive refractive power and has at least one aspheric surface; A fifth lens having negative refractive power and having at least one aspheric surface whose image-side surface is concave; and Wherein, the curvature radius of the object side surface of the fifth lens is R9, and the curvature radius of the image side surface is R10, and the optical imaging lens group includes an aperture and an electronic photosensitive component, and the aperture reaches an imaging surface on the optical axis. The distance is SL, the distance from the object-side surface of the first lens to the imaging surface on the optical axis is TTL, and when the incident angle of light relative to the optical axis angle θ1 is 36.5 degrees and passes through the center of the aperture, the light and the fifth The distance of the vertical optical axis of the intersection point of the image side surface of the lens is Yc1, and the electronic photosensitive component is arranged on the imaging surface, and half of the diagonal length of the effective pixel area of the electronic photosensitive component is ImgH, which satisfies the following relational formula: -5<R10/R9<5; 0.7<SL/TTL<1.2; and 0.3<Yc1/ImgH<0.9. 17. The optical imaging lens group according to claim 16, wherein the object-side surface of the fourth lens is concave, the image-side surface is convex, and the object-side surface of the fifth lens is concave, and its At least one of the object-side surface and the image-side surface is provided with at least one inflection point. 18. The optical imaging lens group according to claim 17, characterized in that, the object-side surface radius of curvature of the first lens is R1, the image-side surface curvature radius is R2, and the focal length of the optical imaging lens group is f , the focal length of the fifth lens is f5, which satisfies the following relationship: |R1/R2|<0.3; and -3.2<f/f5<-1.6. 19. The optical imaging lens group according to claim 17, wherein the focal length of the optical imaging lens group is f, the focal length of the first lens is f1, and the focal length of the fourth lens is f4, which satisfies The following relation: 0.0<f/f4-f/f1<1.5. 20. The optical imaging lens group according to claim 16, wherein the second lens has a radius of curvature of the object-side surface of R3 and a radius of curvature of the image-side surface of R4, which satisfy the following relationship: -1<R4/R3<0. 21. The optical imaging lens group according to claim 17, wherein the focal length of the optical imaging lens group is f, and the focal length of the fourth lens is f4, which satisfies the following relationship: 1.3<f/f4<2.5. 22. An optical imaging lens group, characterized in that it includes sequentially from the object side to the image side: A first lens with positive refractive power, and its object-side surface is convex; a second lens; a third lens; A fourth lens has positive refractive power, its object side surface is concave, its image side surface is convex, and it has at least one aspheric surface; and A fifth lens with negative refractive power, at least one of the object-side surface and the image-side surface is provided with at least one inflection point, and the image-side surface is concave; Wherein, FOV is the maximum viewing angle of the optical imaging lens group, the object-side surface curvature radius of the fifth lens is R9, and the image-side surface curvature radius is R10, which satisfy the following relationship: FOV > 72; and 0<(R9+R10)/(R9-R10)<1.7. 23. The optical imaging lens group according to claim 22, wherein the material of the fifth lens is plastic, the radius of curvature of the object-side surface is R9, the radius of curvature of the image-side surface is R10, and satisfies the following relationship : -1<R10/R9<0. 24. The optical imaging lens group according to claim 23, wherein the focal length of the optical imaging lens group is f, the focal length of the fourth lens is f4, and the focal length of the fifth lens is f5, which satisfies The following relation: -2.8<f/f5<-1.6; and 1.3<f/f4<2.5. 25. The optical imaging lens group according to claim 23, characterized in that the optical imaging lens group comprises an aperture and an electronic photosensitive element, when the light incident angle relative to the optical axis angle θ2 is 37.2 degrees and passes through the aperture The distance of the vertical optical axis of the intersection point of the light and the image side surface of the fifth lens is Yc2, half of the diagonal length of the effective pixel area of the electronic photosensitive component is ImgH, which satisfies the following relationship: 0.5<Yc2/ImgH<0.9. 26. The optical imaging lens group according to claim 22, wherein the dispersion coefficient of the first lens is V1, and the dispersion coefficient of the second lens is V2, which satisfy the following relationship: 28<V1-V2<42.

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