CN215219298U

CN215219298U - Optical imaging lens

Info

Publication number: CN215219298U
Application number: CN202121731067.4U
Authority: CN
Inventors: 肖海东; 戴付建; 赵烈烽
Original assignee: Zhejiang Sunny Optics Co Ltd
Current assignee: Zhejiang Sunny Optics Co Ltd
Priority date: 2021-07-28
Filing date: 2021-07-28
Publication date: 2021-12-17
Anticipated expiration: 2031-07-28

Abstract

The application discloses an optical imaging lens, which sequentially comprises from an object side to an image side along an optical axis: a first lens having an optical power; a second lens having a positive optical power; a third lens having a negative optical power; a fourth lens having an optical power; a fifth lens having optical power; a sixth lens having a refractive power, an object-side surface of which is convex; a seventh lens having optical power; and an eighth lens having optical power. The total effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens meet the following conditions: f/EPD is less than or equal to 1.6; and the half of the diagonal length ImgH of the effective pixel area on the imaging surface of the optical imaging lens satisfies: ImgH > 4.6 mm; and the maximum half field angle Semi-FOV of the optical imaging lens and the effective focal length f8 of the eighth lens meet the following conditions: -4.5 < tan (Semi-FOV). times.f 8 < -3.0.

Description

Optical imaging lens

Technical Field

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

Background

In recent years, with the development of imaging technologies for portable electronic products such as smartphones, mobile phone lenses with high imaging quality are becoming more popular with consumers. However, due to natural limitation of a narrow space of the smart phone, difficulty of obtaining a high-quality image by a mobile phone lens in a complex light environment is increased. Therefore, how to improve the shooting quality of the mobile phone lens in a complex light environment under the condition of meeting the space requirement of the existing mobile phone becomes one of the problems that many lens designers need to solve at present.

SUMMERY OF THE UTILITY MODEL

An aspect of the present application provides an optical imaging lens, in order from an object side to an image side along an optical axis, comprising: a first lens having an optical power; a second lens having a positive optical power; a third lens having optical power; a fourth lens having an optical power; a fifth lens having optical power; a sixth lens having a refractive power, an object-side surface of which is convex; a seventh lens having optical power; and an eighth lens having optical power; the total effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens can satisfy the following conditions: f/EPD is less than or equal to 1.6; the half ImgH of the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens can satisfy: ImgH > 4.6 mm; and the maximum half field angle Semi-FOV of the optical imaging lens and the effective focal length f8 of the eighth lens can satisfy: -4.5 < tan (Semi-FOV). times.f 8 < -3.0.

In one embodiment, at least one of the object-side surface of the first lens element to the image-side surface of the eighth lens element has an aspherical mirror surface.

In one embodiment, the combined focal length f12 of the first and second lenses and the effective focal length f2 of the second lens may satisfy: f12/f2 is more than 0.4 and less than 1.2.

In one embodiment, the radius of curvature R1 of the object-side surface of the first lens and the radius of curvature R2 of the image-side surface of the first lens may satisfy: 0.4 < R1/R2 < 1.2.

In one embodiment, the radius of curvature R11 of the object-side surface of the sixth lens and the radius of curvature R13 of the object-side surface of the seventh lens may satisfy: i (R11-R13) |/(R11+ R13) < 0.8.

In one embodiment, the central thickness CT8 of the eighth lens on the optical axis and the central thickness CT7 of the seventh lens on the optical axis may satisfy: CT8/CT7 < 1.4.

In one embodiment, the central thickness CT5 of the fifth lens on the optical axis, the air interval T56 of the fifth lens and the sixth lens on the optical axis, and the central thickness CT6 of the sixth lens on the optical axis may satisfy: 0.2 < CT5/(T56+ CT6) < 1.4.

In one embodiment, the air interval T23 of the second lens and the third lens on the optical axis and the air interval T12 of the first lens and the second lens on the optical axis may satisfy: T23/T12 < 0.8.

In one embodiment, a distance SAG62 on the optical axis from the intersection point of the image-side surface of the sixth lens and the optical axis to the effective radius vertex of the image-side surface of the sixth lens and a distance SAG61 on the optical axis from the intersection point of the object-side surface of the sixth lens and the optical axis to the effective radius vertex of the object-side surface of the sixth lens may satisfy: 0.2 < SAG62/SAG61 < 1.4.

In one embodiment, a distance SAG21 on the optical axis from the intersection point of the object-side surface of the second lens and the optical axis to the effective radius vertex of the object-side surface of the second lens and a distance SAG22 on the optical axis from the intersection point of the image-side surface of the second lens and the optical axis to the effective radius vertex of the image-side surface of the second lens may satisfy: 0.3 < (SAG21+ SAG22)/(SAG21-SAG22) < 1.5.

In one embodiment, the maximum effective radius DT71 of the object-side surface of the seventh lens and the maximum effective radius DT81 of the object-side surface of the eighth lens may satisfy: 0.5 < DT71/DT81 < 1.1.

In one embodiment, the edge thickness ET7 of the seventh lens and the edge thickness ET8 of the eighth lens may satisfy: ET7/ET8 is less than 1.2.

Another aspect of the present disclosure provides an optical imaging lens, in order from an object side to an image side along an optical axis, comprising: a first lens having an optical power; a second lens having a positive optical power; a third lens having optical power; a fourth lens having an optical power; a fifth lens having optical power; a sixth lens having a refractive power, an object-side surface of which is convex; a seventh lens having optical power; and an eighth lens having optical power. The total effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens can satisfy the following conditions: f/EPD is less than or equal to 1.6; and a distance SAG21 on the optical axis from the intersection point of the object-side surface of the second lens and the optical axis to the effective radius vertex of the object-side surface of the second lens, and a distance SAG22 on the optical axis from the intersection point of the image-side surface of the second lens and the optical axis to the effective radius vertex of the image-side surface of the second lens may satisfy: 0.3 < (SAG21+ SAG22)/(SAG21-SAG22) < 1.5.

In one embodiment, ImgH, which is half the diagonal length of the effective pixel area on the imaging plane of the optical imaging lens, may satisfy: ImgH > 4.6 mm.

In one embodiment, the maximum half field angle Semi-FOV of the optical imaging lens and the effective focal length f8 of the eighth lens may satisfy: -4.5 < tan (Semi-FOV). times.f 8 < -3.0.

The optical imaging lens is applicable to portable electronic products, and has the advantages of large aperture, large image plane, miniaturization and good imaging quality.

Drawings

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

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

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

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

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

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

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

fig. 7 is a schematic structural view showing an optical imaging lens according to embodiment 4 of the present application;

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

fig. 9 is a schematic structural view showing an optical imaging lens according to embodiment 5 of the present application;

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

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

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

fig. 13 is a schematic structural view showing an optical imaging lens according to embodiment 7 of the present application; and

fig. 14A to 14D show an axial chromatic aberration curve, an astigmatism curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of the optical imaging lens of embodiment 7.

Detailed Description

For a better understanding of the present application, various aspects of the present application will be described in more detail with reference to the accompanying drawings. It should be understood that the detailed description is merely illustrative of exemplary embodiments of the present application and does not limit the scope of the present application in any way. Like reference numerals refer to like elements throughout the specification. The expression "and/or" includes any and all combinations of one or more of the associated listed items.

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

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

Herein, the paraxial region refers to a region near the optical axis. If the lens surface is convex and the convex position is not defined, it means that the lens surface is convex at least in the paraxial region; if the lens surface is concave and the concave position is not defined, it means that the lens surface is concave at least in the paraxial region. The surface of each lens closest to the object is called the object side surface of the lens, and the surface of each lens closest to the imaging surface is called the image side surface of the lens.

It will be further understood that the terms "comprises," "comprising," "has," "having," "includes" and/or "including," when used in this specification, specify the presence of stated features, elements, and/or components, but do not preclude the presence or addition of one or more other features, elements, components, and/or groups thereof. Moreover, when a statement such as "at least one of" appears after a list of listed features, the entirety of the listed features is modified rather than modifying individual elements in the list. Furthermore, when describing embodiments of the present application, the use of "may" 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 and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

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

The features, principles, and other aspects of the present application are described in detail below.

An optical imaging lens according to an exemplary embodiment of the present application may include eight lenses having optical powers, which are a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, and an eighth lens, respectively. The eight lenses are arranged in order from the object side to the image side along the optical axis. Any adjacent two lenses of the first lens to the eighth lens may have an air space therebetween.

In an exemplary embodiment, the first lens may have a positive power or a negative power; the second lens may have a positive optical power; the third lens may have a positive optical power or a negative optical power; the fourth lens may have a positive power or a negative power; the fifth lens may have a positive power or a negative power; the sixth lens can have positive focal power or negative focal power, and the object side surface of the sixth lens can be a convex surface; the seventh lens may have positive or negative optical power; and the eighth lens may have a positive power or a negative power.

In an exemplary embodiment, by reasonably setting the optical powers and the surface types of the first lens to the eighth lens, the imaging quality of the optical imaging lens can be improved. Illustratively, by setting the second lens to have positive power, light incident to the second lens can be rapidly converged to converge the clear aperture; by reasonably constraining the object side surface type of the sixth lens, the external field light can be converged and the external field aberration can be corrected.

In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: f/EPD is less than or equal to 1.6, wherein f is the total effective focal length of the optical imaging lens, and EPD is the entrance pupil diameter of the optical imaging lens. The f/EPD is less than or equal to 1.6, the aperture range and the focal length range can be enlarged, and the imaging quality and yield maximization is realized.

In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: ImgH > 4.6mm, wherein ImgH is half the length of the diagonal line of the effective pixel area on the imaging surface of the optical imaging lens. The ImgH is larger than 4.6mm, the minimum image surface can be restricted, and the matching of an oversized chip is realized.

In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: -4.5 < tan (Semi-FOV). times.f 8 < -3.0, wherein the Semi-FOV is the maximum half field angle of the optical imaging lens, and f8 is the effective focal length of the eighth lens. More specifically, the Semi-FOV and f8 further satisfy: -4.4 < tan (Semi-FOV). times.f 8 < -3.3. The optical lens can satisfy the condition that tan (Semi-FOV) multiplied by f8 is more than-4.5 and less than-3.0, effectively correct the aberration of the external field of view and improve the relative illumination.

In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 0.4 < f12/f2 < 1.2, wherein f12 is the combined focal length of the first lens and the second lens, and f2 is the effective focal length of the second lens. More specifically, f12 and f2 may further satisfy: f12/f2 is more than 0.5 and less than 1.1. The requirement that f12/f2 is more than 0.4 and less than 1.2 is met, the deflection angle of light rays can be reduced, and the imaging quality of the optical imaging lens is improved.

In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 0.4 < R1/R2 < 1.2, wherein R1 is the radius of curvature of the object-side surface of the first lens and R2 is the radius of curvature of the image-side surface of the first lens. More specifically, R1 and R2 may further satisfy: 0.5 < R1/R2 < 1.1. The requirement that R1/R2 is more than 0.4 and less than 1.2 is satisfied, the surface shape of the first lens is smooth, and the first lens with larger caliber is favorably molded and manufactured.

In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: | (R11-R13) |/(R11+ R13) < 0.8, where R11 is the radius of curvature of the object-side surface of the sixth lens and R13 is the radius of curvature of the object-side surface of the seventh lens. More specifically, R11 and R13 may further satisfy: i (R11-R13) |/(R11+ R13) < 0.7. Satisfy | (R11-R13) |/(R11+ R13) < 0.8, be favorable to rationally distributing the focal power of sixth lens, and then control the aberration correction of sixth lens effectively.

In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: CT8/CT7 < 1.4, where CT8 is the central thickness of the eighth lens on the optical axis, and CT7 is the central thickness of the seventh lens on the optical axis. More specifically, CT8 and CT7 further satisfy: CT8/CT7 < 1.3. The requirement that CT8/CT7 is less than 1.4 is met, the field curvature of the optical imaging lens can be effectively controlled, and the optical imaging lens has reasonable field curvature.

In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 0.2 < CT5/(T56+ CT6) < 1.4, where CT5 is the center thickness of the fifth lens on the optical axis, T56 is the air space between the fifth lens and the sixth lens on the optical axis, and CT6 is the center thickness of the sixth lens on the optical axis. More specifically, CT5, T56, and CT6 may further satisfy: 0.4 < CT5/(T56+ CT6) < 1.3. Satisfying 0.2 < CT5/(T56+ CT6) < 1.4 facilitates molding of the fifth lens and the sixth lens.

In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: T23/T12 < 0.8, where T23 is the air space on the optical axis of the second lens and the third lens, and T12 is the air space on the optical axis of the first lens and the second lens. More specifically, T23 and T12 may further satisfy: T23/T12 < 0.6. The requirement that T23/T12 is less than 0.8 is met, the field curvature of the optical imaging lens can be effectively controlled, and the optical imaging lens has reasonable field curvature.

In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 0.2 < SAG62/SAG61 < 1.4, wherein SAG62 is a distance on the optical axis from the intersection point of the image side surface of the sixth lens and the optical axis to the effective radius vertex of the image side surface of the sixth lens, and SAG61 is a distance on the optical axis from the intersection point of the object side surface of the sixth lens and the optical axis to the effective radius vertex of the object side surface of the sixth lens. More specifically, SAG62 and SAG61 further may satisfy: 0.4 < SAG62/SAG61 < 1.3. Satisfies 0.2 < SAG62/SAG61 < 1.4, and is favorable for reducing the structural sensitivity of the sixth lens and improving the forming and demolding of the sixth lens.

In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 0.3 < (SAG21+ SAG22)/(SAG21-SAG22) < 1.5, wherein SAG21 is a distance on the optical axis from the intersection point of the object side surface of the second lens and the optical axis to the effective radius vertex of the object side surface of the second lens, and SAG22 is a distance on the optical axis from the intersection point of the image side surface of the second lens and the optical axis to the effective radius vertex of the image side surface of the second lens. More specifically, SAG21 and SAG22 further may satisfy: 0.5 < (SAG21+ SAG22)/(SAG21-SAG22) < 1.5. Satisfies 0.3 < (SAG21+ SAG22)/(SAG21-SAG22) < 1.5, is favorable for reducing the structural sensitivity of the second lens and improving the molding and demolding of the second lens.

In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 0.5 < DT71/DT81 < 1.1, where DT71 is the maximum effective radius of the object-side surface of the seventh lens and DT81 is the maximum effective radius of the object-side surface of the eighth lens. More specifically, DT71 and DT81 further satisfy: 0.7 < DT71/DT81 < 1.0. The requirement that DT71/DT81 is more than 0.5 and less than 1.1 is met, the aperture of the marginal field of view can be effectively restrained, vignetting is increased, and the aberration of the marginal field of view is reduced.

In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: ET7/ET8 < 1.2, wherein ET7 is the edge thickness of the seventh lens and ET8 is the edge thickness of the eighth lens. The structural strength of the seventh lens and the eighth lens can be restrained and the volumes of the seventh lens and the eighth lens can be reasonably distributed when ET7/ET8 is less than 1.2.

In an exemplary embodiment, an optical imaging lens according to the present application further includes a stop disposed between the object side and the first lens. Optionally, the optical imaging lens may further include a filter for correcting color deviation and/or a protective glass for protecting a photosensitive element on the imaging surface. The application provides an optical imaging lens with characteristics of large aperture, large image plane, miniaturization, high imaging quality and the like. The optical imaging lens has the characteristics of large aperture, large image plane and the like, and can improve the light incoming quantity of the imaging lens in a dark environment and enhance the image quality. The optical imaging lens according to the above-described embodiment of the present application may employ a plurality of lenses, for example, the above eight lenses. By reasonably distributing the focal power and the surface shape of each lens, the central thickness of each lens, the on-axis distance between each lens and the like, incident light can be effectively converged, the optical total length of the imaging lens is reduced, the machinability of the imaging lens is improved, and the optical imaging lens is more beneficial to production and processing.

In the embodiment of the present application, at least one of the mirror surfaces of each lens is an aspherical mirror surface, that is, at least one of the object-side surface of the first lens to the image-side surface of the eighth lens is an aspherical mirror surface. The aspheric lens is characterized in that: the curvature varies continuously from the center of the lens to the periphery of the lens. Unlike a spherical lens having a constant curvature from the center of the lens to the periphery of the lens, an aspherical lens has better curvature radius characteristics, and has advantages of improving distortion aberration and improving astigmatic aberration. After the aspheric lens is adopted, the aberration generated during imaging can be eliminated as much as possible, thereby improving the imaging quality. Optionally, at least one of an object-side surface and an image-side surface of each of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens, and the eighth lens is an aspherical mirror surface. Optionally, each of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens, and the eighth lens has an object-side surface and an image-side surface which are aspheric mirror surfaces.

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

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

Example 1

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

As shown in fig. 1, the optical imaging lens includes, in order from an object side to an image side: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter E9, and an image forming surface S19.

The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has positive power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has negative power, and has a convex object-side surface S5 and a concave image-side surface S6. The fourth lens element E4 has positive power, and has a convex object-side surface S7 and a concave image-side surface S8. The fifth lens element E5 has negative power, and has a convex object-side surface S9 and a concave image-side surface S10. The sixth lens element E6 has positive power, and has a convex object-side surface S11 and a concave image-side surface S12. The seventh lens element E7 has positive power, and has a convex object-side surface S13 and a concave image-side surface S14. The eighth lens element E8 has negative power, and has a concave object-side surface S15 and a concave image-side surface S16. Filter E9 has an object side S17 and an image side S18. The light from the object sequentially passes through the respective surfaces S1 to S18 and is finally imaged on the imaging surface S19.

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

TABLE 1

In the present example, the total effective focal length f of the optical imaging lens is 6.04mm, the total length TTL of the optical imaging lens (i.e., the distance on the optical axis from the object-side surface S1 of the first lens E1 to the imaging surface S19 of the optical imaging lens) is 7.64mm, the half ImgH of the diagonal length of the effective pixel region on the imaging surface S19 of the optical imaging lens is 5.38mm, the half Semi-FOV of the maximum field angle of the optical imaging lens is 41.3 °, and the aperture value Fno of the optical imaging lens is 1.45.

In embodiment 1, the object-side surface and the image-side surface of any one of the first lens E1 through the eighth lens E8 are aspheric surfaces, and the surface shape x of each aspheric lens can be defined by, but is not limited to, the following aspheric surface formula:

wherein x is the rise of the distance from the aspheric surface vertex to the aspheric surface vertex when the aspheric surface is at the position with the height of h along the optical axis direction; c is the paraxial curvature of the aspheric surface, c being 1/R (i.e., paraxial curvature c is the inverse of radius of curvature R in table 1 above); k is a conic coefficient; ai is the correction coefficient of the i-th order of the aspherical surface. Table 2 below shows the high-order coefficient A of each of the aspherical mirror surfaces S1 to S16 used in example 1₄、A₆、A₈、A₁₀、A₁₂、A₁₄、A₁₆、A₁₈And A₂₀。

TABLE 2

Fig. 2A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 1, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 2B shows an astigmatism curve representing a meridional field curvature and a sagittal field curvature of the optical imaging lens of embodiment 1. Fig. 2C shows a distortion curve of the optical imaging lens of embodiment 1, which represents distortion magnitude values corresponding to different image heights. Fig. 2D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 1, which represents a deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 2A to 2D, the optical imaging lens according to embodiment 1 can achieve good imaging quality.

Example 2

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

As shown in fig. 3, the optical imaging lens includes, in order from an object side to an image side: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter E9, and an image forming surface S19.

The first lens element E1 has negative power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has positive power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has negative power, and has a convex object-side surface S5 and a concave image-side surface S6. The fourth lens element E4 has negative power, and has a convex object-side surface S7 and a concave image-side surface S8. The fifth lens element E5 has negative power, and has a concave object-side surface S9 and a convex image-side surface S10. The sixth lens element E6 has positive power, and has a convex object-side surface S11 and a concave image-side surface S12. The seventh lens element E7 has positive power, and has a convex object-side surface S13 and a convex image-side surface S14. The eighth lens element E8 has negative power, and has a concave object-side surface S15 and a concave image-side surface S16. Filter E9 has an object side S17 and an image side S18. The light from the object sequentially passes through the respective surfaces S1 to S18 and is finally imaged on the imaging surface S19.

In this example, the total effective focal length f of the optical imaging lens is 5.75mm, the total length TTL of the optical imaging lens is 7.51mm, the half ImgH of the diagonal length of the effective pixel area on the imaging plane S19 of the optical imaging lens is 5.38mm, the half Semi-FOV of the maximum field angle of the optical imaging lens is 42.8 °, and the aperture value Fno of the optical imaging lens is 1.45.

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

TABLE 3

TABLE 4

Fig. 4A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 2, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 4B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 2. Fig. 4C shows a distortion curve of the optical imaging lens of embodiment 2, which represents distortion magnitude values corresponding to different image heights. Fig. 4D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 2, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 4A to 4D, the optical imaging lens according to embodiment 2 can achieve good imaging quality.

Example 3

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

As shown in fig. 5, the optical imaging lens includes, in order from an object side to an image side: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter E9, and an image forming surface S19.

The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has positive power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has negative power, and has a convex object-side surface S5 and a concave image-side surface S6. The fourth lens element E4 has negative power, and has a concave object-side surface S7 and a concave image-side surface S8. The fifth lens element E5 has positive power, and has a convex object-side surface S9 and a convex image-side surface S10. The sixth lens element E6 has positive power, and has a convex object-side surface S11 and a concave image-side surface S12. The seventh lens element E7 has positive power, and has a convex object-side surface S13 and a concave image-side surface S14. The eighth lens element E8 has negative power, and has a concave object-side surface S15 and a concave image-side surface S16. Filter E9 has an object side S17 and an image side S18. The light from the object sequentially passes through the respective surfaces S1 to S18 and is finally imaged on the imaging surface S19.

In this example, the total effective focal length f of the optical imaging lens is 5.75mm, the total length TTL of the optical imaging lens is 7.51mm, the half ImgH of the diagonal length of the effective pixel area on the imaging plane S19 of the optical imaging lens is 5.38mm, the half Semi-FOV of the maximum field angle of the optical imaging lens is 42.9 °, and the aperture value Fno of the optical imaging lens is 1.45.

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

TABLE 5

Flour mark

A4

A6

A8

A10

A12

A14

A16

A18

A20

S1

-4.7726E-03

-5.4559E-04

-2.4772E-04

-4.6775E-04

6.6757E-04

-4.3865E-04

1.4789E-04

-2.4695E-05

1.6227E-06

S2

-2.0452E-02

-9.2772E-03

1.1213E-02

-1.1153E-02

8.1299E-03

-3.6862E-03

9.9980E-04

-1.4873E-04

9.2985E-06

S3

-1.5010E-02

-6.9224E-03

7.2350E-03

-8.0260E-03

7.0527E-03

-3.4595E-03

9.5016E-04

-1.3778E-04

8.1832E-06

S4

-1.2219E-02

-2.4522E-02

2.6107E-02

-1.9096E-02

1.2660E-02

-6.4920E-03

2.0973E-03

-3.6403E-04

2.5611E-05

S5

-1.5406E-02

-1.6515E-02

4.9847E-03

1.2344E-02

-1.2838E-02

5.7394E-03

-1.3889E-03

1.8919E-04

-1.2476E-05

S6

-7.3800E-04

-6.8708E-03

-1.5606E-04

1.0415E-02

-1.1129E-02

6.1577E-03

-2.0541E-03

4.0034E-04

-3.4655E-05

S7

-8.9135E-03

-1.6763E-02

1.3019E-02

-1.6370E-02

1.5905E-02

-1.0311E-02

4.0667E-03

-8.8691E-04

8.2489E-05

S8

-4.5647E-03

-1.9470E-02

2.3831E-02

-2.0144E-02

1.1199E-02

-4.0796E-03

9.4060E-04

-1.2456E-04

7.2340E-06

S9

-2.4343E-02

2.9779E-03

6.4376E-03

-5.8557E-03

2.6258E-03

-6.8965E-04

1.0828E-04

-9.4701E-06

3.5491E-07

S10

-5.0132E-02

-7.0751E-04

1.1022E-02

-9.3239E-03

4.5439E-03

-1.3683E-03

2.4920E-04

-2.4726E-05

1.0135E-06

S11

-2.0054E-02

-5.7338E-03

3.1581E-03

-1.1640E-03

2.3530E-04

-1.9576E-05

-8.7317E-07

2.6255E-07

-1.2576E-08

S12

-1.5594E-02

-2.2295E-03

1.9235E-03

-8.7029E-04

2.1289E-04

-2.7496E-05

1.8915E-06

-6.4478E-08

8.1971E-10

S13

-2.6919E-02

-3.6537E-03

2.6123E-03

-9.3528E-04

1.9820E-04

-2.3598E-05

1.5679E-06

-5.4542E-08

7.7490E-10

S14

2.4492E-02

-1.2902E-02

3.1552E-03

-5.4929E-04

6.9576E-05

-5.9953E-06

3.2202E-07

-9.5241E-09

1.1690E-10

S15

-4.2366E-02

9.6243E-03

-9.7721E-04

6.6319E-05

-4.4559E-06

3.0868E-07

-1.5304E-08

4.2098E-10

-4.8019E-12

S16

-6.3387E-02

1.4465E-02

-2.6220E-03

3.2948E-04

-2.7691E-05

1.5268E-06

-5.3124E-08

1.0601E-09

-9.2706E-12

TABLE 6

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

Example 4

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

As shown in fig. 7, the optical imaging lens includes, in order from an object side to an image side: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter E9, and an image forming surface S19.

The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has positive power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has negative power, and has a convex object-side surface S5 and a concave image-side surface S6. The fourth lens element E4 has negative power, and has a convex object-side surface S7 and a concave image-side surface S8. The fifth lens element E5 has positive power, and has a concave object-side surface S9 and a convex image-side surface S10. The sixth lens element E6 has negative power, and has a convex object-side surface S11 and a concave image-side surface S12. The seventh lens element E7 has positive power, and has a convex object-side surface S13 and a convex image-side surface S14. The eighth lens element E8 has negative power, and has a concave object-side surface S15 and a concave image-side surface S16. Filter E9 has an object side S17 and an image side S18. The light from the object sequentially passes through the respective surfaces S1 to S18 and is finally imaged on the imaging surface S19.

In this example, the total effective focal length f of the optical imaging lens is 5.76mm, the total length TTL of the optical imaging lens is 7.49mm, the half ImgH of the diagonal length of the effective pixel area on the imaging plane S19 of the optical imaging lens is 5.38mm, the half Semi-FOV of the maximum field angle of the optical imaging lens is 42.6 °, and the aperture value Fno of the optical imaging lens is 1.45.

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

TABLE 7

Flour mark

A4

A6

A8

A10

A12

A14

A16

A18

A20

S1

-4.8591E-03

7.4421E-04

-3.0946E-03

2.0634E-03

-7.5052E-04

9.9982E-05

8.0622E-06

-2.4428E-06

5.3483E-08

S2

-1.5049E-02

-1.1988E-02

1.0990E-02

-9.1009E-03

6.1121E-03

-2.6451E-03

6.8458E-04

-9.5182E-05

5.3988E-06

S3

-1.2013E-02

-8.2435E-03

4.6211E-03

-4.1885E-03

4.6667E-03

-2.6782E-03

8.1403E-04

-1.2684E-04

7.9818E-06

S4

2.5383E-03

-2.0598E-02

2.1853E-02

-1.7755E-02

1.0177E-02

-4.0288E-03

1.0459E-03

-1.5636E-04

1.0006E-05

S5

-1.4974E-02

-4.4593E-04

2.1908E-03

1.0132E-03

-3.3125E-03

2.2414E-03

-6.6210E-04

9.1212E-05

-4.7932E-06

S6

-1.4907E-02

5.7883E-03

3.9485E-03

-8.2050E-03

6.2098E-03

-2.5862E-03

6.3386E-04

-7.8594E-05

3.1108E-06

S7

-1.4549E-02

-1.0474E-02

6.2265E-03

-7.8213E-04

-2.7983E-03

1.9792E-03

-6.1752E-04

9.2739E-05

-4.9170E-06

S8

1.2585E-02

-6.3273E-02

6.5200E-02

-4.5182E-02

2.1582E-02

-7.1032E-03

1.5495E-03

-2.0155E-04

1.1741E-05

S9

1.7124E-02

-5.8789E-02

5.2539E-02

-3.0335E-02

1.2118E-02

-3.1439E-03

4.9365E-04

-4.2229E-05

1.5039E-06

S10

-1.2236E-02

-1.9289E-02

1.5624E-02

-8.3465E-03

3.2004E-03

-8.2900E-04

1.3498E-04

-1.2200E-05

4.5997E-07

S11

-2.0713E-03

-8.4622E-03

-2.0164E-03

1.8075E-03

-4.7942E-04

7.6846E-05

-9.3104E-06

7.6033E-07

-2.7500E-08

S12

-2.7470E-02

1.5032E-02

-1.3093E-02

4.7991E-03

-9.0926E-04

9.9071E-05

-6.2892E-06

2.1602E-07

-3.0858E-09

S13

-3.2649E-02

1.2983E-02

-7.3047E-03

1.9929E-03

-2.9244E-04

2.5132E-05

-1.2749E-06

3.5467E-08

-4.1781E-10

S14

2.6764E-02

-1.1951E-02

1.7754E-03

-6.9422E-06

-3.1048E-05

4.2401E-06

-2.6368E-07

8.1200E-09

-1.0011E-10

S15

-3.5297E-02

2.2289E-04

3.0288E-03

-7.7032E-04

9.7669E-05

-7.3651E-06

3.3571E-07

-8.5766E-09

9.4494E-11

S16

-6.3847E-02

1.4517E-02

-2.2839E-03

2.4837E-04

-1.9286E-05

1.0516E-06

-3.7847E-08

7.9857E-10

-7.4340E-12

TABLE 8

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

Example 5

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

As shown in fig. 9, the optical imaging lens includes, in order from an object side to an image side: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter E9, and an image forming surface S19.

The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has positive power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has negative power, and has a convex object-side surface S5 and a concave image-side surface S6. The fourth lens element E4 has positive power, and has a concave object-side surface S7 and a convex image-side surface S8. The fifth lens element E5 has negative power, and has a concave object-side surface S9 and a convex image-side surface S10. The sixth lens element E6 has positive power, and has a convex object-side surface S11 and a convex image-side surface S12. The seventh lens element E7 has negative power, and has a convex object-side surface S13 and a concave image-side surface S14. The eighth lens element E8 has negative power, and has a concave object-side surface S15 and a concave image-side surface S16. Filter E9 has an object side S17 and an image side S18. The light from the object sequentially passes through the respective surfaces S1 to S18 and is finally imaged on the imaging surface S19.

In this example, the total effective focal length f of the optical imaging lens is 5.76mm, the total length TTL of the optical imaging lens is 7.42mm, the half ImgH of the diagonal length of the effective pixel area on the imaging plane S19 of the optical imaging lens is 5.38mm, the half Semi-FOV of the maximum field angle of the optical imaging lens is 42.6 °, and the aperture value Fno of the optical imaging lens is 1.45.

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

TABLE 9

Watch 10

Fig. 10A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 5, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 10B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 5. Fig. 10C shows a distortion curve of the optical imaging lens of embodiment 5, which represents distortion magnitude values corresponding to different image heights. Fig. 10D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 5, which represents a deviation of different image heights on the imaging surface after light passes through the lens. As can be seen from fig. 10A to 10D, the optical imaging lens according to embodiment 5 can achieve good imaging quality.

Example 6

An optical imaging lens according to embodiment 6 of the present application is described below with reference to fig. 11 to 12D. Fig. 11 shows a schematic structural view 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 an object side to an image side: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter E9, and an image forming surface S19.

In this example, the total effective focal length f of the optical imaging lens is 6.04mm, the total length TTL of the optical imaging lens is 7.64mm, the half ImgH of the diagonal length of the effective pixel area on the imaging plane S19 of the optical imaging lens is 5.38mm, the half Semi-FOV of the maximum field angle of the optical imaging lens is 41.3 °, and the aperture value Fno of the optical imaging lens is 1.60.

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

TABLE 11

Flour mark

A4

A6

A8

A10

A12

A14

A16

A18

A20

S1

-3.4547E-03

-2.3907E-03

2.6278E-03

-3.1475E-03

2.0931E-03

-8.5301E-04

2.0339E-04

-2.5675E-05

1.3186E-06

S2

-1.8457E-02

-5.9077E-03

3.7543E-03

-2.3752E-03

1.9542E-03

-1.0057E-03

2.8916E-04

-4.2919E-05

2.5514E-06

S3

-1.6199E-02

-6.7022E-03

3.3738E-03

-1.3542E-03

1.7473E-03

-1.0798E-03

3.2796E-04

-4.9483E-05

2.9570E-06

S4

-1.4294E-03

-2.1897E-02

2.4406E-02

-1.6137E-02

7.0966E-03

-2.1974E-03

4.7391E-04

-6.2439E-05

3.6331E-06

S5

-1.0117E-02

-1.4552E-02

2.2953E-02

-1.6186E-02

6.2036E-03

-1.3461E-03

1.8622E-04

-1.9331E-05

1.1993E-06

S6

-1.0533E-02

2.9265E-03

-1.6188E-04

3.2021E-03

-5.2296E-03

3.6233E-03

-1.3066E-03

2.4703E-04

-1.9339E-05

S7

-7.2731E-03

2.9007E-04

-2.0871E-02

2.7176E-02

-1.9409E-02

8.1849E-03

-2.0592E-03

2.8352E-04

-1.5785E-05

S8

-1.9316E-03

2.3434E-03

-2.8914E-02

3.0174E-02

-1.6670E-02

5.6368E-03

-1.1772E-03

1.3988E-04

-7.1978E-06

S9

-2.3493E-02

1.7624E-02

-2.7020E-02

1.9638E-02

-7.3579E-03

1.5920E-03

-2.0218E-04

1.4016E-05

-4.0943E-07

S10

-6.0862E-02

2.1397E-02

-1.1340E-02

4.9885E-03

-1.4055E-03

2.5964E-04

-2.9900E-05

1.8878E-06

-4.8833E-08

S11

-3.6576E-02

8.5637E-03

-3.6998E-03

3.7935E-04

1.5204E-04

-5.6576E-05

7.9773E-06

-5.2059E-07

1.2769E-08

S12

-2.6138E-02

8.9063E-03

-3.6219E-03

5.0762E-04

4.1328E-05

-1.8990E-05

2.1204E-06

-1.0517E-07

2.0059E-09

S13

-2.1234E-02

-4.2095E-03

3.7964E-04

2.0790E-04

-4.4458E-05

3.8191E-06

-1.6540E-07

3.4339E-09

-2.4536E-11

S14

2.9093E-02

-1.8840E-02

5.2592E-03

-9.1420E-04

1.0447E-04

-7.7801E-06

3.6108E-07

-9.4408E-09

1.0592E-10

S15

-3.2554E-02

5.4538E-03

4.9452E-06

-9.8536E-05

1.4339E-05

-1.0644E-06

4.5548E-08

-1.0647E-09

1.0526E-11

S16

-5.3808E-02

1.1580E-02

-2.1385E-03

2.8188E-04

-2.4917E-05

1.4324E-06

-5.1294E-08

1.0392E-09

-9.0978E-12

TABLE 12

Fig. 12A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 6, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 12B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 6. Fig. 12C shows a distortion curve of the optical imaging lens of embodiment 6, which represents distortion magnitude values corresponding to different image heights. Fig. 12D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 6, which represents a deviation of different image heights on the imaging surface after light passes through the lens. As can be seen from fig. 12A to 12D, the optical imaging lens according to embodiment 6 can achieve good imaging quality.

Example 7

An optical imaging lens according to embodiment 7 of the present application is described below with reference to fig. 13 to 14D. Fig. 13 is a schematic structural view showing 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 an object side to an image side: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter E9, and an image forming surface S19.

In this example, the total effective focal length f of the optical imaging lens is 6.04mm, the total length TTL of the optical imaging lens is 7.64mm, the half ImgH of the diagonal length of the effective pixel area on the imaging plane S19 of the optical imaging lens is 4.78mm, the half Semi-FOV of the maximum field angle of the optical imaging lens is 37.9 °, and the aperture value Fno of the optical imaging lens is 1.45.

Table 13 shows a basic parameter table of the optical imaging lens of embodiment 7, in which the units of the radius of curvature, the thickness/distance, and the focal length are all millimeters (mm). Table 14 shows high-order term coefficients that can be used for each aspherical mirror surface in example 7, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above.

Watch 13

Flour mark

A4

A6

A8

A10

A12

A14

A16

A18

A20

S1

-3.4547E-03

-2.3907E-03

2.6278E-03

-3.1475E-03

2.0931E-03

-8.5301E-04

2.0339E-04

-2.5675E-05

1.3186E-06

S2

-1.8457E-02

-5.9077E-03

3.7543E-03

-2.3752E-03

1.9542E-03

-1.0057E-03

2.8916E-04

-4.2919E-05

2.5514E-06

S3

-1.6199E-02

-6.7022E-03

3.3738E-03

-1.3542E-03

1.7473E-03

-1.0798E-03

3.2796E-04

-4.9483E-05

2.9570E-06

S4

-1.4294E-03

-2.1897E-02

2.4406E-02

-1.6137E-02

7.0966E-03

-2.1974E-03

4.7391E-04

-6.2439E-05

3.6331E-06

S5

-1.0117E-02

-1.4552E-02

2.2953E-02

-1.6186E-02

6.2036E-03

-1.3461E-03

1.8622E-04

-1.9331E-05

1.1993E-06

S6

-1.0533E-02

2.9265E-03

-1.6188E-04

3.2021E-03

-5.2296E-03

3.6233E-03

-1.3066E-03

2.4703E-04

-1.9339E-05

S7

-7.2731E-03

2.9007E-04

-2.0871E-02

2.7176E-02

-1.9409E-02

8.1849E-03

-2.0592E-03

2.8352E-04

-1.5785E-05

S8

-1.9316E-03

2.3434E-03

-2.8914E-02

3.0174E-02

-1.6670E-02

5.6368E-03

-1.1772E-03

1.3988E-04

-7.1978E-06

S9

-2.3493E-02

1.7624E-02

-2.7020E-02

1.9638E-02

-7.3579E-03

1.5920E-03

-2.0218E-04

1.4016E-05

-4.0943E-07

S10

-6.0862E-02

2.1397E-02

-1.1340E-02

4.9885E-03

-1.4055E-03

2.5964E-04

-2.9900E-05

1.8878E-06

-4.8833E-08

S11

-3.6576E-02

8.5637E-03

-3.6998E-03

3.7935E-04

1.5204E-04

-5.6576E-05

7.9773E-06

-5.2059E-07

1.2769E-08

S12

-2.6138E-02

8.9063E-03

-3.6219E-03

5.0762E-04

4.1328E-05

-1.8990E-05

2.1204E-06

-1.0517E-07

2.0059E-09

S13

-2.1234E-02

-4.2095E-03

3.7964E-04

2.0790E-04

-4.4458E-05

3.8191E-06

-1.6540E-07

3.4339E-09

-2.4536E-11

S14

2.9093E-02

-1.8840E-02

5.2592E-03

-9.1420E-04

1.0447E-04

-7.7801E-06

3.6108E-07

-9.4408E-09

1.0592E-10

S15

-3.2554E-02

5.4538E-03

4.9452E-06

-9.8536E-05

1.4339E-05

-1.0644E-06

4.5548E-08

-1.0647E-09

1.0526E-11

S16

-5.3808E-02

1.1580E-02

-2.1385E-03

2.8188E-04

-2.4917E-05

1.4324E-06

-5.1294E-08

1.0392E-09

-9.0978E-12

TABLE 14

Fig. 14A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 7, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 14B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 7. Fig. 14C shows a distortion curve of the optical imaging lens of embodiment 7, which represents distortion magnitude values corresponding to different image heights. Fig. 14D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 7, which represents a deviation of different image heights on the imaging surface after light passes through the lens. As can be seen from fig. 14A to 14D, the optical imaging lens according to embodiment 7 can achieve good imaging quality.

In summary, examples 1 to 7 each satisfy the relationship shown in table 15.

Watch 15

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

The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by those skilled in the art that the scope of the invention herein disclosed is not limited to the particular combination of features described above, but also encompasses other arrangements formed by any combination of the above features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Claims

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

a first lens having an optical power;

a second lens having a positive optical power;

a third lens having optical power;

a fourth lens having an optical power;

a fifth lens having optical power;

a sixth lens having a refractive power, an object-side surface of which is convex;

a seventh lens having optical power; and

an eighth lens having optical power;

the total effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens satisfy: f/EPD is less than or equal to 1.6;

the half of the diagonal length ImgH of the effective pixel area on the imaging surface of the optical imaging lens satisfies: ImgH > 4.6 mm; and

the maximum half field angle Semi-FOV of the optical imaging lens and the effective focal length f8 of the eighth lens meet the following conditions: -4.5 < tan (Semi-FOV). times.f 8 < -3.0.

2. The optical imaging lens of claim 1, wherein the combined focal length f12 of the first and second lenses and the effective focal length f2 of the second lens satisfy: f12/f2 is more than 0.4 and less than 1.2.

3. The optical imaging lens of claim 1, wherein the radius of curvature R1 of the object-side surface of the first lens and the radius of curvature R2 of the image-side surface of the first lens satisfy: 0.4 < R1/R2 < 1.2.

4. The optical imaging lens of claim 1, wherein the radius of curvature R11 of the object-side surface of the sixth lens and the radius of curvature R13 of the object-side surface of the seventh lens satisfy: i (R11-R13) |/(R11+ R13) < 0.8.

5. The optical imaging lens of claim 1, wherein a central thickness CT8 of the eighth lens on the optical axis and a central thickness CT7 of the seventh lens on the optical axis satisfy: CT8/CT7 < 1.4.

6. The optical imaging lens according to claim 1, wherein a center thickness CT5 of the fifth lens on the optical axis, an air interval T56 of the fifth lens and the sixth lens on the optical axis, and a center thickness CT6 of the sixth lens on the optical axis satisfy: 0.2 < CT5/(T56+ CT6) < 1.4.

7. The optical imaging lens of claim 1, wherein an air interval T23 of the second lens and the third lens on the optical axis and an air interval T12 of the first lens and the second lens on the optical axis satisfy: T23/T12 < 0.8.

8. The optical imaging lens of claim 1, wherein a distance SAG62 on the optical axis from an intersection point of an image-side surface of the sixth lens and the optical axis to an effective radius vertex of the image-side surface of the sixth lens to a distance SAG61 on the optical axis from an intersection point of an object-side surface of the sixth lens and the optical axis to an effective radius vertex of the object-side surface of the sixth lens to the optical axis satisfies: 0.2 < SAG62/SAG61 < 1.4.

9. The optical imaging lens according to claim 1, wherein a distance SAG21 on the optical axis from an intersection point of an object-side surface of the second lens and the optical axis to an effective radius vertex of the object-side surface of the second lens to a distance SAG22 on the optical axis from an intersection point of an image-side surface of the second lens and the optical axis to an effective radius vertex of the image-side surface of the second lens satisfies: 0.3 < (SAG21+ SAG22)/(SAG21-SAG22) < 1.5.

10. The optical imaging lens of claim 1, wherein the maximum effective radius DT71 of the object side surface of the seventh lens and the maximum effective radius DT81 of the object side surface of the eighth lens satisfy: 0.5 < DT71/DT81 < 1.1.

11. The optical imaging lens according to claim 1, wherein the edge thickness ET7 of the seventh lens and the edge thickness ET8 of the eighth lens satisfy: ET7/ET8 is less than 1.2.

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

a first lens having an optical power;

a second lens having a positive optical power;

a third lens having optical power;

a fourth lens having an optical power;

a fifth lens having optical power;

a seventh lens having optical power; and

an eighth lens having optical power;

the total effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens satisfy: f/EPD is less than or equal to 1.6; and

the distance SAG21 from the intersection point of the object side surface of the second lens and the optical axis to the effective radius vertex of the object side surface of the second lens on the optical axis to the distance SAG22 from the intersection point of the image side surface of the second lens and the optical axis to the effective radius vertex of the image side surface of the second lens on the optical axis satisfies: 0.3 < (SAG21+ SAG22)/(SAG21-SAG22) < 1.5.

13. The optical imaging lens of claim 12, wherein the combined focal length f12 of the first and second lenses and the effective focal length f2 of the second lens satisfy: f12/f2 is more than 0.4 and less than 1.2.

14. The optical imaging lens of claim 12, wherein the radius of curvature R1 of the object-side surface of the first lens and the radius of curvature R2 of the image-side surface of the first lens satisfy: 0.4 < R1/R2 < 1.2.

15. The optical imaging lens of claim 12, wherein the radius of curvature R11 of the object-side surface of the sixth lens and the radius of curvature R13 of the object-side surface of the seventh lens satisfy: i (R11-R13) |/(R11+ R13) < 0.8.

16. The optical imaging lens of claim 12, wherein a central thickness CT8 of the eighth lens on the optical axis and a central thickness CT7 of the seventh lens on the optical axis satisfy: CT8/CT7 < 1.4.

17. The optical imaging lens of claim 12, wherein a center thickness CT5 of the fifth lens on the optical axis, an air interval T56 of the fifth lens and the sixth lens on the optical axis, and a center thickness CT6 of the sixth lens on the optical axis satisfy: 0.2 < CT5/(T56+ CT6) < 1.4.

18. The optical imaging lens of claim 12, wherein an air interval T23 of the second lens and the third lens on the optical axis and an air interval T12 of the first lens and the second lens on the optical axis satisfy: T23/T12 < 0.8.

19. The optical imaging lens of claim 12, wherein a distance SAG62 on the optical axis from an intersection point of an image-side surface of the sixth lens and the optical axis to an effective radius vertex of the image-side surface of the sixth lens to a distance SAG61 on the optical axis from an intersection point of an object-side surface of the sixth lens and the optical axis to an effective radius vertex of the object-side surface of the sixth lens to the optical axis satisfies: 0.2 < SAG62/SAG61 < 1.4.

20. The optical imaging lens of claim 12, wherein the maximum effective radius DT71 of the object side surface of the seventh lens and the maximum effective radius DT81 of the object side surface of the eighth lens satisfy: 0.5 < DT71/DT81 < 1.1.

21. The optical imaging lens of claim 12, wherein the edge thickness ET7 of the seventh lens and the edge thickness ET8 of the eighth lens satisfy: ET7/ET8 is less than 1.2.

22. The optical imaging lens of claim 21, wherein ImgH, which is half the diagonal length of an effective pixel area on an imaging plane of the optical imaging lens, satisfies: ImgH > 4.6 mm.

23. The optical imaging lens of claim 21, wherein the maximum half field angle Semi-FOV of the optical imaging lens and the effective focal length f8 of the eighth lens satisfy: -4.5 < tan (Semi-FOV). times.f 8 < -3.0.