CN111552059A - Optical imaging lens - Google Patents

Optical imaging lens Download PDF

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Publication number
CN111552059A
CN111552059A CN202010557413.5A CN202010557413A CN111552059A CN 111552059 A CN111552059 A CN 111552059A CN 202010557413 A CN202010557413 A CN 202010557413A CN 111552059 A CN111552059 A CN 111552059A
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Prior art keywords
lens
optical imaging
imaging lens
image
satisfy
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谢检来
戴付建
赵烈烽
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Zhejiang Sunny Optics Co Ltd
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Zhejiang Sunny Optics Co Ltd
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Priority to CN202010557413.5A priority Critical patent/CN111552059A/en
Publication of CN111552059A publication Critical patent/CN111552059A/en
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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
    • G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
    • G02B13/002—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
    • G02B13/0045—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface having five or more lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/06—Panoramic objectives; So-called "sky lenses" including panoramic objectives having reflecting surfaces
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/18—Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration

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  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lenses (AREA)

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, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, and an eighth lens having a refractive power; the third lens has positive focal power, and the image side surface of the third lens is a convex surface; the object side surface of the fourth lens is a concave surface; the maximum half field angle Semi-FOV of the optical imaging lens meets the following requirements: Semi-FOV >45 °; and the total effective focal length f of the optical imaging lens, the curvature radius R3 of the object side surface of the second lens and the curvature radius R4 of the image side surface of the second lens satisfy: f/R3-f/R4 is more than 0.4 and less than 1.4.

Description

Optical imaging lens
Technical Field
The application relates to the field of optical elements, in particular to an optical imaging lens.
Background
With the development and popularization of portable electronic devices such as smart phones, users have higher and higher requirements for high-definition imaging lenses applied to the portable electronic devices such as smart phones. Especially, in the function of taking pictures, users increasingly demand high-definition imaging lenses with large imaging surfaces, miniaturization and wide shooting ranges. Meanwhile, higher requirements are also put forward on the imaging quality of the imaging lens in the market.
How to realize the light inlet quantity of camera lens more sufficient to still need to satisfy portable electronic equipment such as smart mobile phone to the requirement of camera length, simultaneously, make the camera lens have less distortion, can guarantee that the formation of image distortion is less when satisfying the shooting of big field of vision, be one of the difficult problem that present a lot of camera lens designers need a diligent solution.
Disclosure of Invention
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, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, and an eighth lens having a refractive power; the third lens has positive focal power, and the image side surface of the third lens is a convex surface; the object side surface of the fourth lens is a concave surface; the maximum half field angle Semi-FOV of the optical imaging lens can satisfy the following conditions: Semi-FOV >45 °; and the total effective focal length f of the optical imaging lens, the radius of curvature R3 of the object-side surface of the second lens, and the radius of curvature R4 of the image-side surface of the second lens may satisfy: f/R3-f/R4 is more than 0.4 and less than 1.4.
In one embodiment, the object-side surface of the first lens element to the image-side surface of the eighth lens element has at least one aspherical mirror surface.
In one embodiment, the total effective focal length f of the optical imaging lens and the effective focal length f3 of the third lens satisfy: f/f3 is more than 0.4 and less than 1.2.
In one embodiment, the effective focal length f7 of the seventh lens and the effective focal length f8 of the eighth lens may satisfy: -1.5 < f7/f8 < -0.7.
In one embodiment, the radius of curvature R6 of the image-side surface of the third lens and the radius of curvature R5 of the object-side surface of the third lens may satisfy: -0.8 < R6/R5 < -0.2.
In one embodiment, the radius of curvature R7 of the object-side surface of the fourth lens and the total effective focal length f of the optical imaging lens satisfy: -1.85 < R7/f < 0.
In one embodiment, the total effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens may satisfy: f/EPD < 1.8.
In one embodiment, a distance TTL on the optical axis from the object side surface of the first lens to the imaging surface of the optical imaging lens and a combined focal length f12 of the first lens and the second lens may satisfy: TTL/f12 is more than 0.5 and less than 1.1.
In one embodiment, the abbe number V6 of the sixth lens may satisfy: 15 < V6 < 30.
In one embodiment, a center thickness CT4 of the fourth lens on the optical axis, a separation distance T34 of the third lens and the fourth lens on the optical axis, and a separation distance T45 of the fourth lens and the fifth lens on the optical axis may satisfy: 0.2 < CT4/(T34+ T45) < 1.4.
In one embodiment, the central thickness CT5 of the fifth lens on the optical axis and the central thickness CT6 of the sixth lens on the optical axis may satisfy: 0.3 < CT5/CT6 < 1.2.
In one embodiment, the central thickness CT8 of the eighth lens on the optical axis and the edge thickness ET8 of the eighth lens may satisfy: 0.2 < CT8/ET8 < 1.0.
In one embodiment, a sum Σ AT of a spacing distance T67 on the optical axis of the sixth lens and the seventh lens, a spacing distance T78 on the optical axis of the seventh lens and the eighth lens, and a spacing distance on the optical axis of any adjacent two lenses of the first lens to the eighth lens may satisfy: 0.2 < (T67+ T78)/. SIGMA AT < 0.8.
In one embodiment, the effective half aperture DT31 of the object-side surface of the third lens and the effective half aperture DT61 of the object-side surface of the sixth lens satisfy: 0.3 < DT31/DT61 < 1.0.
In one embodiment, a distance SAG72 on the optical axis from the intersection point of the image-side surface of the seventh lens and the optical axis to the effective radius vertex of the image-side surface of the seventh lens and a distance SAG71 on the optical axis from the intersection point of the object-side surface of the seventh lens and the optical axis to the effective radius vertex of the object-side surface of the seventh lens may satisfy: i SAG72/SAG71| < 1.0.
Another 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, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, and an eighth lens having a refractive power; the third lens has positive focal power, and the image side surface of the third lens is a convex surface; the object side surface of the fourth lens is a concave surface; the object side surface of the fourth lens is a concave surface; the maximum half field angle Semi-FOV of the optical imaging lens can satisfy the following conditions: Semi-FOV >45 °; and the distance TTL from the object side surface of the first lens to the imaging surface of the optical imaging lens on the optical axis and the combined focal length f12 of the first lens and the second lens can satisfy the following conditions: TTL/f12 is more than 0.5 and less than 1.1.
The optical imaging lens is applicable to portable electronic products, and has at least one of large field angle, large image plane, miniaturization, good imaging quality and the like.
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;
fig. 14A to 14D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of an optical imaging lens of embodiment 7;
fig. 15 is a schematic structural view showing an optical imaging lens according to embodiment 8 of the present application;
fig. 16A to 16D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of an optical imaging lens of embodiment 8;
fig. 17 is a schematic structural view showing an optical imaging lens according to embodiment 9 of the present application;
fig. 18A to 18D show an on-axis chromatic aberration curve, an astigmatic curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of an optical imaging lens of embodiment 9;
fig. 19 is a schematic structural view showing an optical imaging lens according to embodiment 10 of the present application; and
fig. 20A to 20D 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 10.
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 a spacing distance therebetween.
In an exemplary embodiment, the first lens has a positive or negative power; the second lens has positive focal power or negative focal power; the third lens can have positive focal power, and the image side surface of the third lens can be a convex surface; the fourth lens has positive focal power or negative focal power, and the object side surface of the fourth lens can be a concave surface; the fifth lens has positive focal power or negative focal power; the sixth lens has positive focal power or negative focal power; the seventh lens has positive focal power or negative focal power; and the eighth lens has positive power or negative power.
The third lens with positive focal power is combined with other lenses with focal power, so that the aberration can be favorably counteracted, and the total aberration of the lens is controlled within a small range. The third lens element with a convex image-side surface is matched with the fourth lens element with a concave object-side surface, which is favorable for correcting aberrations such as astigmatism, distortion, spherical aberration and the like.
In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: Semi-FOV >45 deg., wherein Semi-FOV is the maximum half field angle of the optical imaging lens. More specifically, the Semi-FOV further satisfies: Semi-FOV > 49.9. The Semi-FOV is more than 45 degrees, so that the lens has a larger visual field and accommodates more scenes while maintaining a large image plane. The larger field angle is beneficial to reducing the total effective focal length of the optical imaging lens, so that the depth of field of the shot scenery is larger, and the imaging definition of far and near objects is better.
In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 1.85 < R7/f < 0, where R7 is the radius of curvature of the object-side surface of the fourth lens and f is the total effective focal length of the optical imaging lens. More specifically, R7 and f further satisfy: -1.7 < R7/f < -0.9. The condition that R7/f is more than-1.85 and less than 0 is satisfied, which is beneficial to making the mirror surface smoother.
In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 0.4 < f/f3 < 1.2, wherein f is the total effective focal length of the optical imaging lens, and f3 is the effective focal length of the third lens. More specifically, f and f3 further satisfy: f/f3 is more than 0.7 and less than 0.9. The requirement that f/f3 is more than 0.4 and less than 1.2 is favorable for converging and refracting the light rays by the third lens.
In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: -1.5 < f7/f8 < -0.7, wherein f7 is the effective focal length of the seventh lens and f8 is the effective focal length of the eighth lens. More specifically, f7 and f8 may further satisfy: -1.3 < f7/f8 < -0.9. Satisfies-1.5 < f7/f8 < -0.7, and is beneficial to eliminating partial aberration.
In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: -0.8 < R6/R5 < -0.2, wherein R6 is the radius of curvature of the image-side surface of the third lens and R5 is the radius of curvature of the object-side surface of the third lens. More specifically, R6 and R5 may further satisfy: -0.6 < R6/R5 < -0.4. Satisfy-0.8 < R6/R5 < -0.2, be favorable to making the third lens smoother, reduce spherical aberration and coma.
In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 0.4 < f/R3-f/R4 < 1.4, wherein f is the total effective focal length of the optical imaging lens, R3 is the radius of curvature of the object-side surface of the second lens, and R4 is the radius of curvature of the image-side surface of the second lens. More specifically, f, R3, and R4 may further satisfy: f/R3-f/R4 is more than 0.6 and less than 1.2. The requirement that f/R3-f/R4 is more than 0.4 and less than 1.4 is met, the second lens can bear partial positive focal power of the lens, and the second lens is matched with the third lens to realize the compensation of spherical aberration of the lens.
In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: f/EPD < 1.8, where 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 1.8, which is beneficial to ensuring the light inlet quantity of the lens to be more sufficient.
In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 0.5 < TTL/f12 < 1.1, wherein TTL is the distance on the optical axis from the object side surface of the first lens to the imaging surface of the optical imaging lens, and f12 is the combined focal length of the first lens and the second lens. More specifically, TTL and f12 further satisfy: TTL/f12 is more than 0.6 and less than 0.9. The optical imaging lens meets the condition that TTL/f12 is more than 0.5 and less than 1.1, is favorable for reasonably distributing the focal power of the optical imaging lens, and avoids the over concentration of the focal power of the lens, thereby being favorable for reducing aberration.
In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 15 < V6 < 30, wherein V6 is the Abbe number of the sixth lens. More specifically, V6 further satisfies: 19 < V6 < 27. Satisfying 15 < V6 < 30 is advantageous for making the sixth lens have a smaller thickness and for correcting aberrations.
In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 0.2 < CT4/(T34+ T45) < 1.4, where CT4 is the center thickness of the fourth lens on the optical axis, T34 is the separation distance of the third lens and the fourth lens on the optical axis, and T45 is the separation distance of the fourth lens and the fifth lens on the optical axis. More specifically, CT4, T34, and T45 may further satisfy: 0.5 < CT4/(T34+ T45) < 1.2. Satisfying 0.2 < CT4/(T34+ T45) < 1.4 is advantageous in making a local space more compact and in facilitating the assembly of the fourth lens.
In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 0.3 < CT5/CT6 < 1.2, wherein CT5 is the central thickness of the fifth lens on the optical axis, and CT6 is the central thickness of the sixth lens on the optical axis. More specifically, CT5 and CT6 further satisfy: 0.6 < CT5/CT6 < 1.0. The requirement that CT5/CT6 is more than 0.3 and less than 1.2 is met, and the space distribution of the lens is more reasonable.
In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 0.2 < CT8/ET8 < 1.0, wherein CT8 is the central thickness of the eighth lens on the optical axis, and ET8 is the edge thickness of the eighth lens. More specifically, CT8 and ET8 further satisfy: 0.5 < CT8/ET8 < 0.9. The requirement of 0.2 < CT8/ET8 < 1.0 is favorable for molding and manufacturing the eighth lens serving as a large lens and reinforcing the structural strength at the assembly position of the lens.
In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 0.2 < (T67+ T78)/[ sigma ] AT < 0.8, wherein T67 is the spacing distance between the sixth lens and the seventh lens on the optical axis, T78 is the spacing distance between the seventh lens and the eighth lens on the optical axis, and [ sigma ] AT is the sum of the spacing distances between any two adjacent lenses of the first lens to the eighth lens on the optical axis. More specifically, T67, T78, and Σ AT may further satisfy: 0.4 < (T67+ T78)/. SIGMA AT < 0.6. Satisfying 0.2 < (T67+ T78)/[ sigma ] AT < 0.8 is beneficial to making the lens arrangement more compact so as to shorten the optical total length of the lens.
In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 0.3 < DT31/DT61 < 1.0, wherein DT31 is the effective half aperture of the object side surface of the third lens and DT61 is the effective half aperture of the object side surface of the sixth lens. More specifically, DT31 and DT61 further satisfy: 0.6 < DT31/DT61 < 0.8. The requirement that DT31/DT61 is more than 0.3 and less than 1.0 is met, the section difference of the effective half caliber between the lenses is favorably reduced, and the stress distribution of the assembled lenses is more reasonable.
In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: the lens is characterized in that | < 1.0 of SAG72/SAG71|, wherein SAG72 is a distance on the optical axis from the intersection point of the image side surface of the seventh lens and the optical axis to the effective radius vertex of the image side surface of the seventh lens, and SAG71 is a distance on the optical axis from the intersection point of the object side surface of the seventh lens and the optical axis to the effective radius vertex of the object side surface of the seventh lens. More specifically, SAG72 and SAG71 further may satisfy: i SAG72/SAG 71I < 0.8. The requirement that the absolute value of SAG72/SAG71 is less than 1.0 is met, the processing and the forming of the lens are facilitated, and the influence of the stressed lens on the surface shape in the assembling process is reduced.
In an exemplary embodiment, an optical imaging lens according to the present application further includes a stop disposed between the second lens and the third 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 the characteristics of miniaturization, large image surface, small distortion, large field angle, high imaging quality and the like. The optical imaging lens according to the above-described embodiment of the present application may employ a plurality of lenses, for example, eight lenses as described above. 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 in imaging can be eliminated as much as possible, and the imaging quality is further improved. 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 first lens E1, a second lens E2, a stop STO, 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 plane S19.
The first lens element E1 has positive power, and has a concave object-side surface S1 and a convex 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 positive power, and has a convex object-side surface S5 and a convex 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 negative power, and has a convex object-side surface S9 and a concave 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 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).
Figure BDA0002544862980000071
Figure BDA0002544862980000081
TABLE 1
In the present example, the total effective focal length f of the optical imaging lens is 4.09mm, 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 6.10mm, the half ImgH of the diagonal length of the effective pixel region on the imaging surface S19 of the optical imaging lens is 4.70mm, the maximum half field angle Semi-FOV of the optical imaging lens is 50.0 °, and the aperture value Fno of the optical imaging lens is 1.70.
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:
Figure BDA0002544862980000082
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。
Flour mark A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 2.7002E-03 1.5696E-02 -1.3468E-02 1.0583E-02 -6.5700E-03 2.7601E-03 -7.2370E-04 1.0632E-04 -6.6796E-06
S2 1.0366E-01 -1.7642E-01 3.6825E-01 -5.0206E-01 4.5264E-01 -2.6573E-01 9.7438E-02 -2.0192E-02 1.7949E-03
S3 6.9705E-02 4.0023E-02 -1.3865E+00 7.6337E+00 -2.4080E+01 5.0424E+01 -7.3947E+01 7.7679E+01 -5.8765E+01
S4 3.4070E-02 -7.9399E-01 7.5547E+00 -4.5579E+01 1.8056E+02 -4.9082E+02 9.4230E+02 -1.2975E+03 1.2857E+03
S5 -3.6466E-02 -2.1562E-02 8.5698E-02 -2.0811E-01 2.9950E-01 -2.5536E-01 1.2849E-01 -3.5493E-02 4.2237E-03
S6 -3.7023E-02 -7.8109E-01 5.9237E+00 -2.5031E+01 7.1462E+01 -1.4603E+02 2.1835E+02 -2.4038E+02 1.9410E+02
S7 -3.4765E-02 -4.2271E-01 3.0403E+00 -1.1153E+01 2.6375E+01 -4.3368E+01 5.1012E+01 -4.3142E+01 2.5916E+01
S8 2.3020E-02 -9.4497E-02 3.9888E-01 -1.1144E+00 2.1434E+00 -3.1030E+00 3.5176E+00 -3.1251E+00 2.1319E+00
S9 -3.9888E-02 -1.1844E-01 2.6203E-01 -3.1578E-01 2.4443E-01 -1.2753E-01 4.4196E-02 -9.2336E-03 8.7307E-04
S10 -2.1087E-02 -1.4484E-01 2.2988E-01 -2.3455E-01 1.6283E-01 -8.0431E-02 2.7427E-02 -5.6936E-03 5.3171E-04
S11 2.3716E-02 -1.2620E-02 -4.7603E-03 8.9718E-03 -3.8617E-03 -2.1084E-03 2.1769E-03 -6.3479E-04 6.3925E-05
S12 -1.8557E-01 2.1399E-01 -1.8944E-01 1.3512E-01 -6.9176E-02 2.2973E-02 -4.6373E-03 5.1677E-04 -2.4441E-05
S13 -9.6505E-02 9.3639E-02 -1.0163E-01 6.4985E-02 -2.7038E-02 7.1639E-03 -1.1491E-03 1.0201E-04 -3.8753E-06
S14 1.1477E-01 -1.1078E-01 4.9558E-02 -1.5045E-02 3.1605E-03 -4.3862E-04 3.7785E-05 -1.8200E-06 3.7413E-08
S15 -1.3603E-01 4.3698E-02 -4.8922E-03 -1.5412E-04 1.0279E-04 -1.2182E-05 7.1770E-07 -2.1832E-08 2.7374E-10
S16 -1.4970E-01 5.6736E-02 -1.5576E-02 2.8993E-03 -3.5475E-04 2.7848E-05 -1.3435E-06 3.6170E-08 -4.1542E-10
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 first lens E1, a second lens E2, a stop STO, 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 plane S19.
The first lens element E1 has positive power, and has a concave object-side surface S1 and a convex 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 positive power, and has a convex object-side surface S5 and a convex 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 negative power, and has a convex object-side surface S9 and a concave 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 concave image-side surface S14. The eighth lens element E8 has negative power, and has a convex 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 4.09mm, the total length TTL of the optical imaging lens is 6.10mm, the half ImgH of the diagonal length of the effective pixel area on the imaging surface S19 of the optical imaging lens is 4.70mm, the maximum half field angle Semi-FOV of the optical imaging lens is 50.0 °, and the aperture value Fno of the optical imaging lens is 1.70.
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.
Figure BDA0002544862980000091
Figure BDA0002544862980000101
TABLE 3
Flour mark A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 1.1621E-03 1.7914E-02 -1.3678E-02 1.0186E-02 -6.6589E-03 3.0154E-03 -8.4325E-04 1.3016E-04 -8.4635E-06
S2 9.0533E-02 -1.3435E-01 2.9933E-01 -4.2893E-01 4.0205E-01 -2.4406E-01 9.2251E-02 -1.9691E-02 1.8076E-03
S3 5.4521E-02 1.3198E-01 -1.9956E+00 1.0868E+01 -3.5584E+01 7.7972E+01 -1.1967E+02 1.3132E+02 -1.0359E+02
S4 2.4842E-02 -6.7676E-01 6.0758E+00 -3.4593E+01 1.2958E+02 -3.3357E+02 6.0715E+02 -7.9345E+02 7.4699E+02
S5 -3.9610E-02 -2.5542E-02 1.1865E-01 -2.9979E-01 4.5062E-01 -4.0652E-01 2.1689E-01 -6.3121E-02 7.7714E-03
S6 -7.2708E-02 -3.1419E-01 2.6323E+00 -1.0162E+01 2.5802E+01 -4.7638E+01 6.6514E+01 -7.0772E+01 5.6764E+01
S7 -5.2701E-02 -1.9148E-01 1.8491E+00 -7.5502E+00 1.9956E+01 -3.8503E+01 5.6518E+01 -6.3371E+01 5.3492E+01
S8 2.8389E-02 -1.9256E-01 1.2109E+00 -4.7125E+00 1.2212E+01 -2.2319E+01 2.9505E+01 -2.8474E+01 2.0031E+01
S9 -5.2084E-02 -1.0652E-01 2.7030E-01 -3.5507E-01 2.9608E-01 -1.6170E-01 5.6106E-02 -1.1235E-02 9.8836E-04
S10 -1.3141E-02 -1.8437E-01 3.2267E-01 -3.6272E-01 2.7100E-01 -1.3600E-01 4.4365E-02 -8.5102E-03 7.2831E-04
S11 3.9747E-02 -6.2250E-02 8.6347E-02 -9.5373E-02 6.9827E-02 -3.4615E-02 1.0988E-02 -1.9873E-03 1.5444E-04
S12 -1.8048E-01 1.9375E-01 -1.5350E-01 1.0064E-01 -5.0185E-02 1.6665E-02 -3.3780E-03 3.7625E-04 -1.7637E-05
S13 -8.8384E-02 7.5232E-02 -7.5579E-02 4.2792E-02 -1.5267E-02 3.4042E-03 -4.4977E-04 3.2029E-05 -9.4985E-07
S14 1.2318E-01 -1.1388E-01 4.8945E-02 -1.3830E-02 2.6792E-03 -3.4668E-04 2.8329E-05 -1.3148E-06 2.6362E-08
S15 -1.1679E-01 3.0008E-02 -6.7567E-04 -9.1608E-04 1.9047E-04 -1.8681E-05 1.0167E-06 -2.9536E-08 3.5761E-10
S16 -1.3726E-01 4.8376E-02 -1.2604E-02 2.2578E-03 -2.6885E-04 2.0741E-05 -9.9123E-07 2.6600E-08 -3.0609E-10
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 first lens E1, a second lens E2, a stop STO, 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 plane S19.
The first lens element E1 has positive power, and has a concave object-side surface S1 and a convex 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 positive power, and has a convex object-side surface S5 and a convex 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 negative power, and has a convex object-side surface S9 and a concave image-side surface S10. The sixth lens element E6 has negative power, and has a concave 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 convex 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 4.09mm, the total length TTL of the optical imaging lens is 6.10mm, the half ImgH of the diagonal length of the effective pixel area on the imaging surface S19 of the optical imaging lens is 4.70mm, the maximum half field angle Semi-FOV of the optical imaging lens is 50.0 °, and the aperture value Fno of the optical imaging lens is 1.70.
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.
Figure BDA0002544862980000111
TABLE 5
Flour mark A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 8.7616E-04 1.8321E-02 -1.3443E-02 9.3327E-03 -5.8139E-03 2.5794E-03 -7.1727E-04 1.1084E-04 -7.2391E-06
S2 8.8998E-02 -1.2684E-01 2.7760E-01 -3.9139E-01 3.6127E-01 -2.1608E-01 8.0536E-02 -1.6970E-02 1.5398E-03
S3 5.2369E-02 1.5945E-01 -2.1862E+00 1.1733E+01 -3.8259E+01 8.3762E+01 -1.2860E+02 1.4126E+02 -1.1157E+02
S4 2.1252E-02 -6.0361E-01 5.3627E+00 -3.0362E+01 1.1312E+02 -2.8963E+02 5.2437E+02 -6.8172E+02 6.3858E+02
S5 -3.8852E-02 -2.7186E-02 1.1931E-01 -2.9584E-01 4.4094E-01 -3.9614E-01 2.1104E-01 -6.1424E-02 7.5690E-03
S6 -7.5251E-02 -2.7542E-01 2.4466E+00 -9.7708E+00 2.5628E+01 -4.8786E+01 6.9988E+01 -7.6196E+01 6.2279E+01
S7 -5.7557E-02 -1.2149E-01 1.4175E+00 -5.9304E+00 1.5703E+01 -3.0223E+01 4.4404E+01 -5.0114E+01 4.2768E+01
S8 2.6838E-02 -1.8249E-01 1.1868E+00 -4.7356E+00 1.2480E+01 -2.3070E+01 3.0743E+01 -2.9849E+01 2.1102E+01
S9 -6.2274E-02 -6.2300E-02 1.7726E-01 -2.3761E-01 1.9625E-01 -1.0407E-01 3.4724E-02 -6.6926E-03 5.7149E-04
S10 -2.6417E-02 -1.3961E-01 2.5076E-01 -2.8611E-01 2.1381E-01 -1.0751E-01 3.5619E-02 -7.0441E-03 6.2764E-04
S11 4.7272E-02 -7.9749E-02 1.1114E-01 -1.1470E-01 7.8601E-02 -3.7326E-02 1.1722E-02 -2.1505E-03 1.7181E-04
S12 -1.6099E-01 1.5601E-01 -1.2122E-01 8.6525E-02 -4.7816E-02 1.7198E-02 -3.7086E-03 4.3556E-04 -2.1470E-05
S13 -8.3573E-02 6.3487E-02 -6.3269E-02 3.5594E-02 -1.2527E-02 2.7075E-03 -3.3727E-04 2.1748E-05 -5.4865E-07
S14 1.2243E-01 -1.1194E-01 4.8554E-02 -1.3889E-02 2.7144E-03 -3.5273E-04 2.8856E-05 -1.3384E-06 2.6793E-08
S15 -1.1775E-01 3.0153E-02 -6.0215E-04 -9.5298E-04 1.9798E-04 -1.9527E-05 1.0717E-06 -3.1461E-08 3.8567E-10
S16 -1.3633E-01 4.7544E-02 -1.2263E-02 2.1810E-03 -2.5805E-04 1.9778E-05 -9.3894E-07 2.5033E-08 -2.8629E-10
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 first lens E1, a second lens E2, a stop STO, 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 plane S19.
The first lens element E1 has positive power, and has a concave object-side surface S1 and a convex 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 positive power, and has a convex object-side surface S5 and a convex 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 negative power, and has a convex object-side surface S9 and a concave image-side surface S10. The sixth lens element E6 has negative power, and has a concave 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 4.09mm, the total length TTL of the optical imaging lens is 6.10mm, the half ImgH of the diagonal length of the effective pixel area on the imaging surface S19 of the optical imaging lens is 4.70mm, the maximum half field angle Semi-FOV of the optical imaging lens is 50.0 °, and the aperture value Fno of the optical imaging lens is 1.70.
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.
Figure BDA0002544862980000131
TABLE 7
Figure BDA0002544862980000132
Figure BDA0002544862980000141
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 first lens E1, a second lens E2, a stop STO, 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 plane S19.
The first lens element E1 has positive power, and has a convex object-side surface S1 and a convex 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 positive power, and has a convex object-side surface S5 and a convex 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 negative power, and has a convex object-side surface S9 and a concave image-side surface S10. The sixth lens element E6 has negative power, and has a concave 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 4.09mm, the total length TTL of the optical imaging lens is 6.03mm, the half ImgH of the diagonal length of the effective pixel area on the imaging surface S19 of the optical imaging lens is 4.70mm, the maximum half field angle Semi-FOV of the optical imaging lens is 50.0 °, and the aperture value Fno of the optical imaging lens is 1.70.
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.
Figure BDA0002544862980000142
Figure BDA0002544862980000151
TABLE 9
Flour mark A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 8.3432E-04 1.0810E-02 -1.5619E-03 -2.6245E-03 2.5329E-03 -1.2127E-03 3.4071E-04 -5.3760E-05 3.6793E-06
S2 7.9565E-02 -1.0270E-01 2.2897E-01 -3.3128E-01 3.2211E-01 -2.0663E-01 8.3866E-02 -1.9482E-02 1.9634E-03
S3 4.2063E-02 2.3629E-01 -2.5221E+00 1.3257E+01 -4.4681E+01 1.0373E+02 -1.7147E+02 2.0489E+02 -1.7741E+02
S4 1.0953E-02 -2.0958E-01 1.4471E+00 -8.0775E+00 3.1724E+01 -8.8256E+01 1.7648E+02 -2.5579E+02 2.6867E+02
S5 -3.6849E-02 -1.7689E-02 5.3344E-02 -1.3709E-01 2.1017E-01 -1.8622E-01 9.4879E-02 -2.5422E-02 2.7715E-03
S6 -6.2086E-02 -4.9541E-01 3.8537E+00 -1.4431E+01 3.2680E+01 -4.4840E+01 2.9701E+01 1.1751E+01 -4.7391E+01
S7 -6.5667E-02 -8.4731E-02 7.6458E-01 -3.3000E-01 -1.0656E+01 4.8261E+01 -1.1335E+02 1.7086E+02 -1.7571E+02
S8 1.0977E-02 -4.4877E-02 4.6083E-01 -2.1787E+00 6.3241E+00 -1.2636E+01 1.8049E+01 -1.8667E+01 1.3978E+01
S9 -8.3182E-02 1.3281E-02 2.2093E-03 3.0963E-02 -7.6320E-02 7.6777E-02 -4.1106E-02 1.1623E-02 -1.3697E-03
S10 -4.9241E-02 -6.8399E-02 1.1087E-01 -1.0988E-01 6.7311E-02 -2.7713E-02 8.1031E-03 -1.5941E-03 1.5899E-04
S11 4.7012E-02 -5.8174E-02 6.3669E-02 -6.1022E-02 4.0838E-02 -2.0447E-02 7.0846E-03 -1.4411E-03 1.2605E-04
S12 -1.5028E-01 1.3581E-01 -9.8889E-02 6.9707E-02 -4.0011E-02 1.5131E-02 -3.4106E-03 4.1467E-04 -2.0980E-05
S13 -8.1111E-02 5.7794E-02 -5.9465E-02 3.6074E-02 -1.4373E-02 3.6287E-03 -5.4396E-04 4.4063E-05 -1.4913E-06
S14 1.1902E-01 -1.1146E-01 5.0465E-02 -1.5636E-02 3.3493E-03 -4.7332E-04 4.1562E-05 -2.0470E-06 4.3258E-08
S15 -1.0637E-01 1.6827E-02 5.5243E-03 -2.4072E-03 4.0320E-04 -3.7456E-05 2.0250E-06 -5.9776E-08 7.4657E-10
S16 -1.2268E-01 4.1410E-02 -1.0721E-02 1.9629E-03 -2.4042E-04 1.8944E-05 -9.1412E-07 2.4481E-08 -2.7828E-10
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 first lens E1, a second lens E2, a stop STO, 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 plane S19.
The first lens element E1 has positive power, and has a convex object-side surface S1 and a convex 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 positive power, and has a convex object-side surface S5 and a convex image-side surface S6. The fourth lens element E4 has negative 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 convex object-side surface S9 and a concave image-side surface S10. The sixth lens element E6 has negative power, and has a concave 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 4.09mm, the total length TTL of the optical imaging lens is 6.04mm, the half ImgH of the diagonal length of the effective pixel area on the imaging surface S19 of the optical imaging lens is 4.70mm, the maximum half field angle Semi-FOV of the optical imaging lens is 49.9 °, and the aperture value Fno of the optical imaging lens is 1.70.
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.
Figure BDA0002544862980000161
TABLE 11
Flour mark A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 3.5714E-03 1.1491E-02 -5.6617E-03 3.2319E-03 -2.3806E-03 1.2913E-03 -4.2368E-04 7.4877E-05 -5.4840E-06
S2 8.2294E-02 -1.1056E-01 2.5420E-01 -3.7425E-01 3.6830E-01 -2.3895E-01 9.8205E-02 -2.3163E-02 2.3776E-03
S3 4.8187E-02 1.7410E-01 -2.1403E+00 1.1646E+01 -3.9856E+01 9.3307E+01 -1.5508E+02 1.8611E+02 -1.6180E+02
S4 5.2163E-03 -2.1185E-01 1.6168E+00 -9.4659E+00 3.8377E+01 -1.0949E+02 2.2392E+02 -3.3164E+02 3.5592E+02
S5 -3.9796E-02 -4.9017E-04 -1.3388E-02 3.2002E-02 -4.8271E-02 5.3524E-02 -3.9717E-02 1.6817E-02 -2.9226E-03
S6 -1.0026E-01 -1.2650E-01 2.4954E+00 -1.3260E+01 4.2062E+01 -8.9792E+01 1.3454E+02 -1.4375E+02 1.0946E+02
S7 -9.0481E-02 1.8025E-01 -9.4912E-02 -5.9555E-01 7.6345E-01 3.9995E+00 -1.7498E+01 3.4397E+01 -4.1641E+01
S8 3.0323E-02 -1.5381E-01 1.1595E+00 -5.3745E+00 1.6045E+01 -3.2997E+01 4.8323E+01 -5.1172E+01 3.9284E+01
S9 -7.5590E-02 -3.4201E-05 -6.9167E-03 5.7470E-02 -9.1031E-02 7.4237E-02 -3.5648E-02 9.6461E-03 -1.1305E-03
S10 -4.4393E-02 -6.4886E-02 8.5204E-02 -7.9455E-02 5.0329E-02 -2.2340E-02 6.9885E-03 -1.4134E-03 1.4079E-04
S11 4.4042E-02 -5.1735E-02 7.6375E-02 -1.0201E-01 8.5196E-02 -4.6217E-02 1.5729E-02 -3.0298E-03 2.5062E-04
S12 -1.6321E-01 1.4201E-01 -8.4896E-02 4.6842E-02 -2.4799E-02 9.4186E-03 -2.1575E-03 2.6631E-04 -1.3747E-05
S13 -8.4706E-02 6.1013E-02 -5.9201E-02 3.5392E-02 -1.4034E-02 3.4876E-03 -5.0583E-04 3.8862E-05 -1.2189E-06
S14 1.2449E-01 -1.2048E-01 5.8236E-02 -1.9419E-02 4.4279E-03 -6.5823E-04 6.0415E-05 -3.1028E-06 6.8289E-08
S15 -1.0792E-01 1.7069E-02 5.8262E-03 -2.5265E-03 4.2415E-04 -3.9561E-05 2.1482E-06 -6.3605E-08 7.9339E-10
S16 -1.2272E-01 4.0333E-02 -9.9100E-03 1.7307E-03 -2.0504E-04 1.5849E-05 -7.5922E-07 2.0388E-08 -2.3438E-10
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 first lens E1, a second lens E2, a stop STO, 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 plane S19.
The first lens element E1 has negative power, and has a concave 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 positive power, and has a convex object-side surface S5 and a convex image-side surface S6. The fourth lens element E4 has negative 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 convex object-side surface S9 and a concave 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 concave image-side surface S14. The eighth lens element E8 has negative power, and has a convex 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 3.93mm, the total length TTL of the optical imaging lens is 6.09mm, the half ImgH of the diagonal length of the effective pixel area on the imaging surface S19 of the optical imaging lens is 4.70mm, the maximum half field angle Semi-FOV of the optical imaging lens is 51.2 °, and the aperture value Fno of the optical imaging lens is 1.70.
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.
Figure BDA0002544862980000181
Watch 13
Figure BDA0002544862980000182
Figure BDA0002544862980000191
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.
Example 8
An optical imaging lens according to embodiment 8 of the present application is described below with reference to fig. 15 to 16D. Fig. 15 shows a schematic structural diagram of an optical imaging lens according to embodiment 8 of the present application.
As shown in fig. 15, the optical imaging lens includes, in order from an object side to an image side: a first lens E1, a second lens E2, a stop STO, 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 plane S19.
The first lens element E1 has negative power, and has a concave 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 positive power, and has a convex object-side surface S5 and a convex image-side surface S6. The fourth lens element E4 has negative 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 convex object-side surface S9 and a concave image-side surface S10. The sixth lens element E6 has negative power, and has a concave 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 3.92mm, the total length TTL of the optical imaging lens is 6.10mm, the half ImgH of the diagonal length of the effective pixel area on the imaging surface S19 of the optical imaging lens is 4.70mm, the maximum half field angle Semi-FOV of the optical imaging lens is 51.2 °, and the aperture value Fno of the optical imaging lens is 1.70.
Table 15 shows a basic parameter table of the optical imaging lens of embodiment 8, in which the units of the radius of curvature, the thickness/distance, and the focal length are all millimeters (mm). Table 16 shows high-order term coefficients that can be used for each aspherical mirror surface in example 8, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above.
Figure BDA0002544862980000192
Figure BDA0002544862980000201
Watch 15
Flour mark A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 1.7855E-02 4.3343E-04 7.3242E-04 -1.4638E-03 8.1029E-04 -2.2455E-04 2.9490E-05 -9.5244E-07 -9.1063E-08
S2 2.4118E-02 8.6429E-02 -1.6257E-01 2.0932E-01 -1.7304E-01 8.8693E-02 -2.5520E-02 3.2116E-03 -3.7769E-05
S3 4.7921E-03 2.0306E-01 -1.1500E+00 5.1219E+00 -1.6700E+01 3.8534E+01 -6.2925E+01 7.3031E+01 -6.0138E+01
S4 1.1638E-02 -3.3532E-01 3.0971E+00 -2.0523E+01 9.1493E+01 -2.8204E+02 6.1606E+02 -9.6679E+02 1.0932E+03
S5 -4.0475E-02 -1.3772E-02 3.8997E-02 -1.4005E-01 2.8043E-01 -3.2066E-01 2.1083E-01 -7.3922E-02 1.0756E-02
S6 -1.3956E-01 5.8299E-01 -4.0655E+00 2.1789E+01 -7.9450E+01 2.0104E+02 -3.6192E+02 4.7018E+02 -4.4205E+02
S7 -1.3453E-01 8.4432E-01 -6.0372E+00 3.0520E+01 -1.0542E+02 2.5509E+02 -4.4246E+02 5.5706E+02 -5.0990E+02
S8 1.6526E-02 -5.5914E-02 4.5638E-01 -2.3435E+00 7.4531E+00 -1.6006E+01 2.4081E+01 -2.5812E+01 1.9781E+01
S9 -9.6762E-02 9.6884E-02 -2.0744E-01 3.1586E-01 -3.0952E-01 1.9154E-01 -7.4142E-02 1.6872E-02 -1.7560E-03
S10 -1.1802E-01 7.2404E-02 -7.6283E-02 -1.7327E-02 1.0914E-01 -1.0412E-01 4.7807E-02 -1.0964E-02 1.0024E-03
S11 4.2127E-02 -1.5758E-02 4.9704E-02 -1.1985E-01 1.1644E-01 -6.2539E-02 1.9530E-02 -3.3300E-03 2.4047E-04
S12 -1.5273E-01 1.4619E-01 -7.7148E-03 -8.3155E-02 6.8060E-02 -2.7074E-02 6.0661E-03 -7.3246E-04 3.7124E-05
S13 -1.1614E-01 1.1012E-01 -1.0976E-01 7.4482E-02 -3.3204E-02 9.3314E-03 -1.5875E-03 1.4952E-04 -5.9807E-06
S14 1.6753E-01 -1.9331E-01 1.1397E-01 -4.3146E-02 1.0602E-02 -1.6582E-03 1.5823E-04 -8.3760E-06 1.8834E-07
S15 -1.0369E-01 -5.3144E-03 2.1339E-02 -7.2752E-03 1.2233E-03 -1.1931E-04 6.8791E-06 -2.1843E-07 2.9534E-09
S16 -1.4019E-01 4.4058E-02 -1.0056E-02 1.6911E-03 -2.0211E-04 1.6216E-05 -8.1648E-07 2.3147E-08 -2.8123E-10
TABLE 16
Fig. 16A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 8, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 16B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 8. Fig. 16C shows a distortion curve of the optical imaging lens of embodiment 8, which represents distortion magnitude values corresponding to different image heights. Fig. 16D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 8, which represents a deviation of different image heights on the imaging surface after light passes through the lens. As can be seen from fig. 16A to 16D, the optical imaging lens according to embodiment 8 can achieve good imaging quality.
Example 9
An optical imaging lens according to embodiment 9 of the present application is described below with reference to fig. 17 to 18D. Fig. 17 is a schematic structural view showing an optical imaging lens according to embodiment 9 of the present application.
As shown in fig. 17, the optical imaging lens includes, in order from an object side to an image side: a first lens E1, a second lens E2, a stop STO, 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 plane S19.
The first lens element E1 has negative power, and has a concave 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 positive power, and has a convex object-side surface S5 and a convex image-side surface S6. The fourth lens element E4 has negative 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 convex object-side surface S9 and a concave 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 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 3.92mm, the total length TTL of the optical imaging lens is 6.10mm, the half ImgH of the diagonal length of the effective pixel area on the imaging surface S19 of the optical imaging lens is 4.70mm, the maximum half field angle Semi-FOV of the optical imaging lens is 51.2 °, and the aperture value Fno of the optical imaging lens is 1.70.
Table 17 shows a basic parameter table of the optical imaging lens of example 9, in which the units of the radius of curvature, the thickness/distance, and the focal length are all millimeters (mm). Table 18 shows high-order term coefficients that can be used for each aspherical mirror surface in example 9, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above.
Figure BDA0002544862980000211
Figure BDA0002544862980000221
TABLE 17
Flour mark A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 1.7263E-02 2.8263E-04 1.6131E-03 -2.5244E-03 1.5299E-03 -5.2142E-04 1.0223E-04 -1.0607E-05 4.4226E-07
S2 2.4470E-02 8.9935E-02 -1.8148E-01 2.5152E-01 -2.2736E-01 1.3145E-01 -4.5715E-02 8.4041E-03 -5.8621E-04
S3 5.0284E-03 2.0369E-01 -1.1306E+00 4.9172E+00 -1.5817E+01 3.6343E+01 -5.9531E+01 6.9761E+01 -5.8403E+01
S4 1.0447E-02 -3.4696E-01 3.2787E+00 -2.1767E+01 9.6815E+01 -2.9749E+02 6.4753E+02 -1.0126E+03 1.1408E+03
S5 -4.1728E-02 1.1204E-02 -7.9666E-02 1.9458E-01 -2.9412E-01 2.8717E-01 -1.7555E-01 6.1000E-02 -9.0925E-03
S6 -1.2564E-01 2.2835E-01 -1.1138E+00 7.9954E+00 -3.7517E+01 1.1260E+02 -2.2841E+02 3.2405E+02 -3.2611E+02
S7 -1.1486E-01 4.9184E-01 -3.1812E+00 1.7139E+01 -6.3961E+01 1.6452E+02 -2.9841E+02 3.8794E+02 -3.6328E+02
S8 1.3530E-02 -6.4358E-02 5.5734E-01 -2.8381E+00 9.0867E+00 -1.9993E+01 3.1287E+01 -3.5314E+01 2.8798E+01
S9 -9.5279E-02 5.4047E-02 -8.9688E-02 1.6332E-01 -1.9242E-01 1.3585E-01 -5.7913E-02 1.4172E-02 -1.5543E-03
S10 -7.0740E-02 -1.0080E-01 2.1082E-01 -2.9309E-01 2.7326E-01 -1.6477E-01 6.1039E-02 -1.2454E-02 1.0611E-03
S11 6.5026E-02 -1.1639E-01 1.8189E-01 -2.0747E-01 1.4617E-01 -6.5174E-02 1.7943E-02 -2.7780E-03 1.8474E-04
S12 -1.6452E-01 1.5176E-01 -2.0235E-02 -6.1970E-02 5.1296E-02 -1.9797E-02 4.2652E-03 -4.9361E-04 2.3942E-05
S13 -9.7102E-02 7.7161E-02 -7.7418E-02 5.1072E-02 -2.2445E-02 6.3094E-03 -1.0855E-03 1.0450E-04 -4.3097E-06
S14 1.6276E-01 -1.8802E-01 1.0800E-01 -4.0631E-02 1.0059E-02 -1.5920E-03 1.5370E-04 -8.2178E-06 1.8626E-07
S15 -1.2138E-01 1.2098E-02 1.4198E-02 -5.6699E-03 1.0028E-03 -1.0008E-04 5.8292E-06 -1.8549E-07 2.4985E-09
S16 -1.5366E-01 5.4757E-02 -1.4895E-02 2.9686E-03 -4.0633E-04 3.6162E-05 -1.9768E-06 6.0023E-08 -7.7400E-10
Watch 18
Fig. 18A shows an on-axis chromatic aberration curve of an optical imaging lens of embodiment 9, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 18B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 9. Fig. 18C shows a distortion curve of the optical imaging lens of embodiment 9, which represents distortion magnitude values corresponding to different image heights. Fig. 18D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 9, which represents a deviation of different image heights on the imaging surface after light passes through the lens. As can be seen from fig. 18A to 18D, the optical imaging lens according to embodiment 9 can achieve good imaging quality.
Example 10
An optical imaging lens according to embodiment 10 of the present application is described below with reference to fig. 19 to 20D. Fig. 19 shows a schematic structural diagram of an optical imaging lens according to embodiment 10 of the present application.
As shown in fig. 19, the optical imaging lens includes, in order from an object side to an image side: a first lens E1, a second lens E2, a stop STO, 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 plane S19.
The first lens element E1 has negative power, and has a concave 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 positive power, and has a convex object-side surface S5 and a convex 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 negative power, and has a convex object-side surface S9 and a concave 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 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 3.92mm, the total length TTL of the optical imaging lens is 6.10mm, the half ImgH of the diagonal length of the effective pixel area on the imaging surface S19 of the optical imaging lens is 4.70mm, the maximum half field angle Semi-FOV of the optical imaging lens is 51.2 °, and the aperture value Fno of the optical imaging lens is 1.70.
Table 19 shows a basic parameter table of the optical imaging lens of example 10, in which the units of the radius of curvature, thickness/distance, and focal length are all millimeters (mm). Table 20 shows high-order term coefficients that can be used for each aspherical mirror surface in example 10, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above.
Figure BDA0002544862980000231
Watch 19
Figure BDA0002544862980000232
Figure BDA0002544862980000241
Watch 20
Fig. 20A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 10, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 20B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 10. Fig. 20C shows a distortion curve of the optical imaging lens of embodiment 10, which represents distortion magnitude values corresponding to different image heights. Fig. 20D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 10, which represents a deviation of different image heights on the imaging surface after light passes through the lens. As can be seen from fig. 20A to 20D, the optical imaging lens according to embodiment 10 can achieve good imaging quality.
In summary, examples 1 to 10 each satisfy the relationship shown in table 21.
Conditional expression (A) example 1 2 3 4 5 6 7 8 9 10
R7/f -1.29 -1.38 -1.42 -1.41 -1.21 -1.13 -1.01 -1.03 -1.19 -1.65
f/f3 0.78 0.78 0.78 0.77 0.78 0.78 0.84 0.83 0.83 0.83
f7/f8 -1.26 -1.19 -1.21 -1.20 -1.18 -1.16 -0.96 -0.96 -0.98 -0.98
R6/R5 -0.50 -0.53 -0.55 -0.55 -0.47 -0.43 -0.45 -0.48 -0.49 -0.52
f/R3-f/R4 0.73 0.71 0.71 0.72 0.64 0.74 1.04 1.11 1.10 1.16
f/EPD 1.70 1.70 1.70 1.70 1.70 1.70 1.70 1.70 1.70 1.70
TTL/f12 0.81 0.80 0.80 0.81 0.79 0.79 0.72 0.71 0.73 0.73
V6 25.90 25.90 25.90 25.90 25.90 25.90 19.20 25.90 19.20 19.20
CT4/(T34+T45) 1.05 1.00 0.97 0.96 1.17 1.02 0.58 0.55 0.61 0.62
CT5/CT6 0.62 0.62 0.63 0.65 0.66 0.63 0.76 0.91 0.73 0.72
CT8/ET8 0.59 0.63 0.61 0.58 0.67 0.53 0.65 0.61 0.76 0.80
(T67+T78)/∑AT 0.55 0.55 0.54 0.54 0.56 0.55 0.49 0.46 0.49 0.48
DT31/DT61 0.71 0.73 0.74 0.74 0.73 0.72 0.64 0.66 0.65 0.64
|SAG72/SAG71| 0.48 0.12 0.06 0.26 0.72 0.47 0.40 0.59 0.55 0.54
TABLE 21
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 a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned 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 (10)

1. The optical imaging lens assembly, in order from an object side to an image side along an optical axis, comprises: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, and an eighth lens having a refractive power;
the third lens has positive focal power, and the image side surface of the third lens is a convex surface;
the object side surface of the fourth lens is a concave surface;
the maximum half field angle Semi-FOV of the optical imaging lens meets the following requirements: Semi-FOV >45 °; and
the total effective focal length f of the optical imaging lens, the curvature radius R3 of the object side surface of the second lens and the curvature radius R4 of the image side surface of the second lens satisfy: f/R3-f/R4 is more than 0.4 and less than 1.4.
2. The optical imaging lens of claim 1, wherein the total effective focal length f of the optical imaging lens and the effective focal length f3 of the third lens satisfy: f/f3 is more than 0.4 and less than 1.2.
3. The optical imaging lens of claim 1, wherein the effective focal length f7 of the seventh lens and the effective focal length f8 of the eighth lens satisfy: -1.5 < f7/f8 < -0.7.
4. The optical imaging lens of claim 1, wherein the radius of curvature R6 of the image-side surface of the third lens and the radius of curvature R5 of the object-side surface of the third lens satisfy: -0.8 < R6/R5 < -0.2.
5. The optical imaging lens of claim 1, wherein the radius of curvature R7 of the object side surface of the fourth lens and the total effective focal length f of the optical imaging lens satisfy: -1.85 < R7/f < 0.
6. The optical imaging lens of claim 1, wherein 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 < 1.8.
7. The optical imaging lens according to claim 1, wherein abbe number V6 of the sixth lens satisfies: 15 < V6 < 30.
8. The optical imaging lens according to claim 1, wherein a center thickness CT4 of the fourth lens on the optical axis, a separation distance T34 of the third lens and the fourth lens on the optical axis, and a separation distance T45 of the fourth lens and the fifth lens on the optical axis satisfy: 0.2 < CT4/(T34+ T45) < 1.4.
9. The optical imaging lens of claim 1, wherein a central thickness CT5 of the fifth lens on the optical axis and a central thickness CT6 of the sixth lens on the optical axis satisfy: 0.3 < CT5/CT6 < 1.2.
10. The optical imaging lens assembly, in order from an object side to an image side along an optical axis, comprises: 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 having a refractive power;
the third lens has positive focal power, and the image side surface of the third lens is a convex surface;
the object side surface of the fourth lens is a concave surface;
the maximum half field angle Semi-FOV of the optical imaging lens meets the following requirements: Semi-FOV >45 °; and
the distance TTL between the object side surface of the first lens and the imaging surface of the optical imaging lens on the optical axis and the combined focal length f12 of the first lens and the second lens meet the following conditions: TTL/f12 is more than 0.5 and less than 1.1.
CN202010557413.5A 2020-06-18 2020-06-18 Optical imaging lens Pending CN111552059A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112698488A (en) * 2020-12-30 2021-04-23 诚瑞光学(苏州)有限公司 Image pickup optical lens
WO2022021453A1 (en) * 2020-07-27 2022-02-03 常州市瑞泰光电有限公司 Camera optical lens
CN114488470A (en) * 2020-11-11 2022-05-13 大立光电股份有限公司 Optical image lens, image capturing device and electronic device
US12025777B2 (en) 2020-11-11 2024-07-02 Largan Precision Co., Ltd. Optical imaging lens system, image capturing unit and electronic device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022021453A1 (en) * 2020-07-27 2022-02-03 常州市瑞泰光电有限公司 Camera optical lens
CN114488470A (en) * 2020-11-11 2022-05-13 大立光电股份有限公司 Optical image lens, image capturing device and electronic device
US12025777B2 (en) 2020-11-11 2024-07-02 Largan Precision Co., Ltd. Optical imaging lens system, image capturing unit and electronic device
CN112698488A (en) * 2020-12-30 2021-04-23 诚瑞光学(苏州)有限公司 Image pickup optical lens
US20220206256A1 (en) * 2020-12-30 2022-06-30 Aac Optics (Suzhou) Co., Ltd. Camera Optical Lens
CN112698488B (en) * 2020-12-30 2022-08-05 诚瑞光学(苏州)有限公司 Image pickup optical lens

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