CN107085285B - Optical imaging lens - Google Patents

Optical imaging lens Download PDF

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CN107085285B
CN107085285B CN201710542434.8A CN201710542434A CN107085285B CN 107085285 B CN107085285 B CN 107085285B CN 201710542434 A CN201710542434 A CN 201710542434A CN 107085285 B CN107085285 B CN 107085285B
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lens
optical imaging
imaging lens
shows
optical
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CN107085285A (en
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闻人建科
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Zhejiang Sunny Optics Co Ltd
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Zhejiang Sunny Optics Co Ltd
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Priority to CN201710542434.8A priority Critical patent/CN107085285B/en
Priority to CN202211037542.7A priority patent/CN115268038A/en
Publication of CN107085285A publication Critical patent/CN107085285A/en
Priority to PCT/CN2018/072776 priority patent/WO2019007030A1/en
Priority to US16/211,696 priority patent/US10976520B2/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

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

The application discloses an optical imaging lens, which sequentially 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 from an object side to an image side along an optical axis. The first lens, the second lens, the fifth lens, the seventh lens and the eighth lens can respectively have positive focal power or negative focal power; the combined focal power of the third lens and the fourth lens is positive focal power; the sixth lens may have a positive optical power; and the effective focal length f of the optical imaging lens and the combined focal length f34 of the third lens and the fourth lens satisfy that: f/f34 is more than or equal to 0.5 and less than 1.0.

Description

Optical imaging lens
Technical Field
The present invention relates to an optical imaging lens, and more particularly, to an optical imaging lens composed of eight lenses.
Background
With the development of science and technology, semiconductor process technology is continuously refined, and therefore, the high-quality imaging lens gradually becomes the mainstream trend of the market. With the increasing development of portable electronic products such as mobile phones and tablet computers, the portable electronic products become thinner and smaller, and particularly, the 360-dimensional vision application in the market which is larger and larger at present puts higher requirements on the performances such as miniaturization, light weight and imaging quality of the optical imaging lens.
In order to meet the requirements of miniaturization and high quality, the development of portable electronic products such as smart phones has increased, and higher requirements are put on imaging lenses, especially for environments with insufficient light, such as rainy days, evening, night scenes, starry sky, and the like, so that F numbers of 2.0 or more than 2.0 cannot meet higher-order imaging requirements, and in order to obtain larger light intake, imaging lenses with smaller F numbers are required. In order to meet higher imaging quality and bring more imaging experience for users, more lenses are needed to be realized, and lenses with multiple lenses become mainstream products in the high-end market field.
Therefore, the invention provides an optical imaging lens which is applicable to portable electronic products, has the optical characteristics of multi-piece type ultrathin large aperture, miniaturization and good imaging quality.
Disclosure of Invention
The technical solution provided by the present application at least partially solves the technical problems described above.
According to an aspect of the present application, an optical imaging lens includes, in order from an object side to an image side along an optical axis, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element, a seventh lens element, and an eighth lens element. The first lens, the second lens, the fifth lens, the seventh lens and the eighth lens can respectively have positive focal power or negative focal power; the combined focal power of the third lens and the fourth lens is positive focal power; the sixth lens may have a positive optical power; and the effective focal length f of the optical imaging lens and the combined focal length f34 of the third lens and the fourth lens satisfy that: 0.5. ltoreq. f/f34<1.0, e.g., 0.53. ltoreq. f/f34< 0.74.
According to another aspect of the present application, there is also provided an optical imaging lens including, in order from an object side to an image side along an optical axis, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element, a seventh lens element, and an eighth lens element. The first lens, the second lens and the fifth lens can respectively have positive focal power or negative focal power; the third lens and the sixth lens may have positive optical power; the fourth lens may have a negative optical power; the combined focal power of the seventh lens and the eighth lens is negative focal power; and the effective focal length f of the optical imaging lens and the combined focal length f78 of the seventh lens and the eighth lens meet the following conditions: -0.5< f/f78 <0.
In one embodiment, the combined optical power of the third lens and the fourth lens is a positive optical power.
In one embodiment, the third lens may have a positive optical power and the fourth lens may have a negative optical power.
In one embodiment, the combined power of the seventh lens and the eighth lens is a negative power.
In one embodiment, at least one of the seventh lens and the eighth lens has a negative optical power.
In one embodiment, the effective focal length f of the optical imaging lens and the combined focal length f34 of the third lens and the fourth lens satisfy that: f/f34 is more than or equal to 0.5 and less than 1.0.
In one embodiment, a distance TTL between the object side surface of the first lens element and the imaging surface of the optical imaging lens on the optical axis and a half ImgH of a diagonal length of an effective pixel area on the imaging surface of the optical imaging lens may satisfy: TTL/ImgH ≦ 1.7, e.g., TTL/ImgH ≦ 1.7.
In one embodiment, the effective focal length f of the optical imaging lens and the effective focal length f6 of the sixth lens satisfy: 0< f/f6<0.5, e.g., 0.31. ltoreq. f/f 6. ltoreq.0.41.
In one embodiment, the effective focal length f of the optical imaging lens and the combined focal length f12 of the first lens and the second lens satisfy: 0< f/f12<0.5, e.g., 0.05. ltoreq. f/f 12. ltoreq.0.23.
In one embodiment, the effective focal length f of the optical imaging lens and the effective focal length f1 of the first lens satisfy that: i f/f1| ≦ 0.1, for example, | f/f1| ≦ 0.05.
In one embodiment, a radius of curvature R3 of the object-side surface of the second lens and a radius of curvature R4 of the image-side surface of the second lens may satisfy: 0.6< R3/R4<1.2, e.g., 0.88 ≦ R3/R4 ≦ 1.07.
In one embodiment, the central thickness CT2 of the second lens on the optical axis and the central thickness CT3 of the third lens on the optical axis may satisfy: 0.5< CT2/CT3<0.8, e.g., 0.66. ltoreq. CT2/CT 3. ltoreq.0.69.
In one embodiment, a radius of curvature R7 of the object-side surface of the fourth lens and a radius of curvature R8 of the image-side surface of the fourth lens may satisfy: 0< (R7-R8)/(R7+ R8) <1.0, for example, 0.46. ltoreq. (R7-R8)/(R7+ R8). ltoreq.0.54.
In one embodiment, the effective focal length f of the optical imaging lens and the effective focal length f5 of the fifth lens satisfy: i f/f5| ≦ 0.1, for example, | f/f5| ≦ 0.06.
In one embodiment, the effective focal length f of the optical imaging lens and the curvature radius R11 of the object side surface of the sixth lens satisfy: 0.5< f/R11<1.0, e.g., 0.65 ≦ f/R11 ≦ 0.85.
In one embodiment, a central thickness CT6 of the sixth lens on the optical axis and a central thickness CT7 of the seventh lens on the optical axis may satisfy: 0.7< CT6/CT7<1.2, e.g., 0.82 ≦ CT6/CT7 ≦ 1.03.
In one embodiment, the effective focal length f of the optical imaging lens and the combined focal length f78 of the seventh lens and the eighth lens can satisfy the following condition: 0.5< f/f78<0, for example-0.38. ltoreq. f/f 78. ltoreq.0.25.
In one embodiment, a radius of curvature R13 of the object-side surface of the seventh lens and a radius of curvature R14 of the image-side surface of the seventh lens may satisfy: i (R13-R14)/(R13+ R14) | or less 0.5, for example, | (R13-R14)/(R13+ R14) | or less 0.43.
In one embodiment, a radius of curvature R15 of the object-side surface of the eighth lens element and a radius of curvature R16 of the image-side surface of the eighth lens element may satisfy: 1. ltoreq.R 15/R16<1.5, for example 1.08. ltoreq.R 15/R16. ltoreq.1.4.
In one embodiment, the effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens may satisfy: f/EPD is less than or equal to 1.8, for example, f/EPD is less than or equal to 1.73.
The optical imaging lens with the configuration can further have at least one beneficial effect of multi-piece type, ultra-thinness, miniaturization, high imaging quality, low sensitivity, balanced aberration and the like.
Drawings
The above and other advantages of embodiments of the present application will become apparent from the detailed description made with reference to the following drawings, which are intended to illustrate exemplary embodiments of the present application and not to limit the same. In the drawings:
fig. 1 is a schematic structural view showing an optical imaging lens according to embodiment 1 of the present application;
fig. 2A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 1;
fig. 2B shows an astigmatism curve of the optical imaging lens of embodiment 1;
fig. 2C shows a distortion curve of the optical imaging lens of embodiment 1;
fig. 2D shows a chromatic aberration of magnification curve 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 shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 2;
fig. 4B shows an astigmatism curve of the optical imaging lens of embodiment 2;
fig. 4C shows a distortion curve of the optical imaging lens of embodiment 2;
fig. 4D shows a chromatic aberration of magnification curve 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 shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 3;
fig. 6B shows an astigmatism curve of the optical imaging lens of embodiment 3;
fig. 6C shows a distortion curve of the optical imaging lens of embodiment 3;
fig. 6D shows a chromatic aberration of magnification curve 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 shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 4;
fig. 8B shows an astigmatism curve of the optical imaging lens of embodiment 4;
fig. 8C shows a distortion curve of the optical imaging lens of embodiment 4;
fig. 8D shows a chromatic aberration of magnification curve 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 shows on-axis chromatic aberration curves of the optical imaging lens of embodiment 5;
fig. 10B shows an astigmatism curve of the optical imaging lens of embodiment 5;
fig. 10C shows a distortion curve of the optical imaging lens of embodiment 5;
fig. 10D shows a chromatic aberration of magnification curve 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 shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 6;
fig. 12B shows an astigmatism curve of the optical imaging lens of embodiment 6;
fig. 12C shows a distortion curve of the optical imaging lens of embodiment 6;
fig. 12D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 6;
fig. 13 is a schematic view showing a structure of an optical imaging lens according to embodiment 7 of the present application;
fig. 14A shows on-axis chromatic aberration curves of the optical imaging lens of embodiment 7;
fig. 14B shows an astigmatism curve of the optical imaging lens of embodiment 7;
fig. 14C shows a distortion curve of the optical imaging lens of embodiment 7;
fig. 14D shows a chromatic aberration of magnification curve of the 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 shows on-axis chromatic aberration curves of an optical imaging lens of embodiment 8;
fig. 16B shows an astigmatism curve of the optical imaging lens of embodiment 8;
fig. 16C shows a distortion curve of the optical imaging lens of embodiment 8;
fig. 16D shows a chromatic aberration of magnification curve of the 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 shows on-axis chromatic aberration curves of an optical imaging lens of embodiment 9;
fig. 18B shows an astigmatism curve of the optical imaging lens of embodiment 9;
fig. 18C shows a distortion curve of the optical imaging lens of embodiment 9;
fig. 18D shows a chromatic aberration of magnification curve 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;
fig. 20A shows on-axis chromatic aberration curves of the optical imaging lens of embodiment 10;
fig. 20B shows an astigmatism curve of the optical imaging lens of embodiment 10;
fig. 20C shows a distortion curve of the optical imaging lens of embodiment 10;
fig. 20D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 10;
fig. 21 is a schematic structural view showing an optical imaging lens according to embodiment 11 of the present application;
fig. 22A shows on-axis aberration curves of an optical imaging lens of embodiment 11;
fig. 22B shows an astigmatism curve of an optical imaging lens of embodiment 11;
fig. 22C shows a distortion curve of the optical imaging lens of embodiment 11;
fig. 22D shows a chromatic aberration of magnification curve of an optical imaging lens of embodiment 11;
fig. 23 is a schematic structural view showing an optical imaging lens according to embodiment 12 of the present application;
fig. 24A shows on-axis aberration curves of an optical imaging lens of embodiment 12;
fig. 24B shows an astigmatism curve of the optical imaging lens of embodiment 12;
fig. 24C shows a distortion curve of the optical imaging lens of embodiment 12;
fig. 24D shows a chromatic aberration of magnification curve of an optical imaging lens of embodiment 12;
fig. 25 is a schematic view showing a structure of an optical imaging lens according to embodiment 13 of the present application;
fig. 26A shows on-axis chromatic aberration curves of the optical imaging lens of embodiment 13;
fig. 26B shows an astigmatism curve of an optical imaging lens of embodiment 13;
fig. 26C shows a distortion curve of the optical imaging lens of embodiment 13;
fig. 26D shows a chromatic aberration of magnification curve of an optical imaging lens of embodiment 13.
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 the expressions first, second, etc. in this specification are used only to distinguish one feature from another feature, and do not indicate any limitation on the features. Thus, the first lens discussed below may also be referred to as the second 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.
It will be further understood that the terms "comprises," "comprising," "includes," "including" and/or "including," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, 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 examples or illustrations.
As used herein, the terms "substantially," "about," and the like are used as terms of table approximation and not as terms of table degree, and are intended to account for inherent deviations in measured or calculated values that will be recognized by those of ordinary skill in the art.
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.
The paraxial region refers to a region near the optical axis. The first lens is the lens closest to the object and the eighth lens is the lens closest to the light sensing element. Herein, a surface closest to the object in each lens is referred to as an object side surface, and a surface closest to the imaging surface in each lens is referred to as an image side surface.
It should be noted that, in the present application, the embodiments and features of the embodiments may be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
The present application is further described below with reference to specific examples.
An optical imaging lens according to an exemplary embodiment of the present application has, for example, eight lenses, i.e., 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. The eight lenses are arranged in order from an object side to an image side along an optical axis.
In exemplary embodiments, the first lens, the second lens, the fifth lens, the seventh lens, and the eighth lens may have positive power or negative power, respectively; the third lens and the sixth lens may have positive optical power; the fourth lens may have a negative optical power; through the positive and negative distribution of the focal power of each lens, the low-order aberration of a control system can be effectively balanced, so that the optical imaging lens obtains better imaging quality, and the characteristic of ultrathin large aperture can be realized.
In an exemplary embodiment, an effective focal length f of the optical imaging lens and a combined focal length f34 of the third lens and the fourth lens may satisfy: 0.5. ltoreq. f/f34<1.0, and more specifically, 0.53. ltoreq. f/f34<0.74 can be further satisfied. By reasonably configuring the combined focal length of the third lens and the fourth lens, the total length of the optical imaging lens system can be shortened, and astigmatism can be effectively corrected.
In an exemplary embodiment, a 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 a half ImgH of a diagonal length of an effective pixel area on the imaging surface of the optical imaging lens may satisfy: TTL/ImgH ≦ 1.7, and more specifically, TTL/ImgH ≦ 1.7 may be further satisfied. By the configuration, the aberration of the marginal field of view can be reduced, the size of the optical imaging lens system is effectively reduced, and the ultrathin characteristic and the miniaturization requirement of the lens are ensured.
In an exemplary embodiment, the effective focal length f of the optical imaging lens and the effective focal length f6 of the sixth lens may satisfy: 0< f/f6<0.5, more specifically, 0.31. ltoreq. f/f 6. ltoreq.0.41 can be further satisfied. Through the configuration, the sixth lens bears smaller positive focal power, the volume of the lens can be controlled, the space utilization rate of the lens is improved, and the requirement of system miniaturization is met.
In an exemplary embodiment, an effective focal length f of the optical imaging lens and a combined focal length f12 of the first lens and the second lens may satisfy: 0< f/f12<0.5, and more specifically, 0.05. ltoreq. f/f 12. ltoreq.0.23 can be further satisfied. By reasonably configuring the combined focal length of the first lens and the second lens, the field curvature of the optical imaging lens system can be shortened, and the on-axis spherical aberration can be reduced.
In an exemplary embodiment, the effective focal length f of the optical imaging lens and the effective focal length f1 of the first lens may satisfy: | f/f1| ≦ 0.1, and more specifically, | f/f1| ≦ 0.05 may be further satisfied. With this arrangement, the first lens assumes a relatively small power, and thus, by taking advantage mainly of the aspheric characteristics thereof, it is possible to facilitate an increase in aperture and correction of peripheral field aberrations.
In an exemplary embodiment, a radius of curvature R3 of the object-side surface of the second lens and a radius of curvature R4 of the image-side surface of the second lens may satisfy: 0.6< R3/R4<1.2, and more specifically, 0.88. ltoreq. R3/R4. ltoreq.1.07 can be further satisfied. By reasonably controlling the curvature radius of the second lens, the object side light rays can be better converged, and the vertical axis chromatic aberration of the optical imaging lens system is reduced.
In an exemplary embodiment, a center thickness CT2 of the second lens on the optical axis and a center thickness CT3 of the third lens on the optical axis may satisfy: 0.5< CT2/CT3<0.8, and more specifically, 0.66. ltoreq. CT2/CT 3. ltoreq.0.69 can be further satisfied. Through the configuration, the lens group has more reasonable space utilization rate, the requirement of an assembly process is met, and the assembly sensitivity of the second lens is reduced.
In an exemplary embodiment, a radius of curvature R7 of the object-side surface of the fourth lens and a radius of curvature R8 of the image-side surface of the fourth lens may satisfy: 0< (R7-R8)/(R7+ R8) <1.0, more specifically, 0.46. ltoreq. of (R7-R8)/(R7+ R8) or less than 0.54 can be further satisfied. On the premise that the imaging surface meets the specification, the effective radius of the object side surface and the image side surface of the fourth lens is reasonably selected, so that the light ray incidence angle can be reasonably reduced, the system sensitivity is reduced, and the assembly stability is ensured.
In an exemplary embodiment, an effective focal length f5 between the effective focal length f of the optical imaging lens and the effective focal length f of the fifth lens may satisfy: the | f/f5| ≦ 0.1, more specifically, may further satisfy | f/f5| ≦ 0.06. Through the configuration, the fifth lens bears smaller focal power, so that the deflection angle of light rays can be effectively reduced by mainly utilizing the aspheric surface characteristic of the fifth lens, and the sensitivity of the optical imaging lens is reduced.
In an exemplary embodiment, the effective focal length f of the optical imaging lens and the curvature radius R11 of the object side surface of the sixth lens satisfy: 0.5< f/R11<1.0, more specifically, 0.65. ltoreq. f/R11. ltoreq.0.85 can be further satisfied. By restricting the curvature radius of the sixth lens within a reasonable range, the field curvature and astigmatism of the imaging edge can be adjusted, and the imaging quality of the periphery is met.
In an exemplary embodiment, a center thickness CT6 of the sixth lens on the optical axis and a center thickness CT7 of the seventh lens on the optical axis may satisfy: 0.7< CT6/CT7<1.2, and more specifically, 0.82. ltoreq. CT6/CT 7. ltoreq.1.03 can be further satisfied. Through the configuration, the lens group has more reasonable space utilization rate, the assembly process requirement is met, and the assembly sensitivity of the sixth lens and the seventh lens is reduced.
In an exemplary embodiment, an effective focal length f of the optical imaging lens and a combined focal length f78 of the seventh lens and the eighth lens may satisfy: -0.5< f/f78<0, more specifically, can further satisfy-0.38. ltoreq. f/f 78. ltoreq. 0.25. Through reasonable configuration of the combined focal length of the seventh lens and the eighth lens, the combined focal length bears smaller negative focal power, the refractive power change of the lens group can be balanced, and the imaging quality is improved.
In an exemplary embodiment, a radius of curvature R13 of the object-side surface of the seventh lens and a radius of curvature R14 of the image-side surface of the seventh lens may satisfy: i (R13-R14)/(R13+ R14) | is 0.5 or less, more specifically, it can further satisfy (R13-R14)/(R13+ R14) | is 0.43 or less. On the premise that the imaging surface meets the specification, the effective radiuses of the object side surface and the image side surface of the seventh lens are well selected reasonably, the light ray emergence angle can be adjusted reasonably, and the sensor is matched well.
In an exemplary embodiment, a radius of curvature R15 of the object-side surface of the eighth lens and a radius of curvature R16 of the image-side surface of the eighth lens may satisfy: 1. ltoreq. R15/R16<1.5, and more specifically, 1.08. ltoreq. R15/R16. ltoreq.1.4 can be further satisfied. By properly distributing the radius of curvature of the eighth lens, the system can obtain smaller on-axis chromatic aberration.
In an exemplary embodiment, the effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens may satisfy: f/EPD is less than or equal to 1.8, and more specifically, f/EPD is less than or equal to 1.73. Through such configuration, can satisfy optical imaging lens system and possess more sufficient light inlet quantity, and then promote the formation of image quality.
In an exemplary embodiment, the optical imaging lens may further include a stop STO for limiting a light beam, and the amount of light entering is adjusted to improve the imaging quality. 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, the surface type, the central thickness of each lens, the axial distance between each lens and the like, the aperture of the optical imaging lens can be effectively enlarged, the system sensitivity is reduced, the miniaturization of the lens is ensured, and the imaging quality is improved, so that the optical imaging lens is more favorable for production and processing and is suitable for portable electronic products. In the embodiment of the present application, at least one of the mirror surfaces of each lens is an aspherical mirror surface. The aspheric lens is characterized in that: the curvature varies continuously from the center to the periphery of the lens. Unlike a spherical lens having a constant curvature from the center to the periphery of the lens, an aspherical lens has a better curvature radius characteristic, has the advantages of improving distortion aberration and astigmatic aberration, and can make the field of view larger and more realistic. After the aspheric lens is adopted, the aberration generated during imaging can be eliminated as much as possible, thereby improving the imaging quality. In addition, the use of the aspherical lens can also effectively reduce the number of lenses in the optical system.
However, it will be appreciated by those skilled in the art that the number of lenses constituting the lens barrel 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 eight lenses E1-E8 arranged in order from the object side to the imaging side along the optical axis. The first lens E1 has an object-side surface S1 and an image-side surface S2; the second lens E2 has an object-side surface S3 and an image-side surface S4; the third lens E3 has an object-side surface S5 and an image-side surface S6; the fourth lens E4 has an object-side surface S7 and an image-side surface S8; the fifth lens E5 has an object-side surface S9 and an image-side surface S10; the sixth lens E6 has an object-side surface S11 and an image-side surface S12, the seventh lens E7 has an object-side surface S13 and an image-side surface S14, and the eighth lens E8 has an object-side surface S15 and an image-side surface S16.
In this embodiment, the first lens, the second lens, the third lens, the fifth lens, and the sixth lens each have positive optical power; the fourth lens, the seventh lens and the eighth lens all have negative focal power.
In the optical imaging lens of the present embodiment, an aperture STO for limiting a light beam is further included. The optical imaging lens according to embodiment 1 may include a filter E9 having an object side S17 and an image side S18, and the filter E9 may be used to correct color deviation. 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 the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens of example 1.
TABLE 1
Figure BDA0001342159680000111
Figure BDA0001342159680000121
As can be seen from table 1, the radius of curvature R3 of the object-side surface S3 of the second lens E2 and the radius of curvature R4 of the image-side surface S4 of the second lens E2 satisfy R3/R4 of 0.89; the central thickness CT2 of the second lens E2 on the optical axis and the central thickness CT3 of the third lens E3 on the optical axis satisfy CT2/CT3 ═ 0.66; the radius of curvature R7 of the object-side surface S7 of the fourth lens E4 and the radius of curvature R8 of the image-side surface S8 of the fourth lens E4 satisfy (R7-R8)/(R7+ R8) 0.53; the central thickness CT6 of the sixth lens E6 on the optical axis and the central thickness CT7 of the seventh lens E7 on the optical axis satisfy CT6/CT7 ═ 0.94; the radius of curvature R13 of the object-side surface S13 of the seventh lens E7 and the radius of curvature R14 of the image-side surface S14 of the seventh lens E7 satisfy | (R13-R14)/(R13+ R14) | 0.22; and the radius of curvature R15 of the object side S15 of the eighth lens E8 and the radius of curvature R16 of the image side S16 of the eighth lens E8 satisfy that R15/R16 is 1.26.
In the embodiment, eight lenses are taken as an example, and the focal length and the surface type of each lens are reasonably distributed, so that the aperture of the lens is effectively enlarged, the total length of the lens is shortened, and the large aperture and the miniaturization of the lens are ensured; meanwhile, various aberrations are corrected, and the resolution and the imaging quality of the lens are improved. Each aspherical surface type x is defined by the following formula:
Figure BDA0001342159680000122
wherein x is the distance rise from the vertex of the aspheric surface 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, and c is 1/R (i.e., paraxial curvature c is the reciprocal of radius of curvature R in table 1 above); k is the conic coefficient (given in table 1 above); ai is the correction coefficient of the i-th order of the aspheric surface. Table 2 below shows the coefficients A of the higher-order terms that can be used for the respective mirrors S1-S16 in example 1 4 、A 6 、A 8 、A 10 、A 12 、A 14 、A 16 、A 18 And A 20 。
TABLE 2
Flour mark A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 1.6544E-02 -1.8273E-02 -1.0185E-01 3.2971E-01 -4.6198E-01 3.6847E-01 -1.7207E-01 4.3737E-02 -4.6680E-03
S2 4.7143E-02 -1.8248E-01 2.2519E-01 4.8389E-02 -4.7633E-01 6.1917E-01 -3.9380E-01 1.2789E-01 -1.6922E-02
S3 2.6035E-01 -6.0092E-01 9.9496E-01 -1.1345E+00 8.0539E-01 -3.4969E-01 9.0578E-02 -1.2872E-02 7.7300E-04
S4 5.2480E-02 -3.1857E-01 5.1288E-01 -6.6276E-01 6.2381E-01 -3.5919E-01 1.1872E-01 -2.0768E-02 1.4931E-03
S5 1.8194E-02 -1.8904E-01 3.0565E-01 -4.9328E-01 6.5985E-01 -4.8956E-01 1.8504E-01 -3.2236E-02 1.8178E-03
S6 -9.5318E-02 2.7730E-01 -8.3348E-01 1.3347E+00 -1.2095E+00 6.4252E-01 -1.9785E-01 3.2679E-02 -2.2402E-03
S7 -7.7286E-02 2.2631E-01 -4.8940E-01 2.0659E-01 7.3584E-01 -1.3269E+00 9.7920E-01 -3.4779E-01 4.8603E-02
S8 6.7695E-02 -5.9921E-02 2.5621E-01 -8.5846E-01 1.4562E+00 -1.3647E+00 7.2452E-01 -2.0169E-01 2.2671E-02
S9 -6.6859E-02 7.4114E-02 -1.4553E-01 2.8475E-01 -3.7173E-01 2.9133E-01 -1.3033E-01 3.0519E-02 -2.8974E-03
S10 -9.6113E-02 2.0071E-02 -3.3310E-02 2.8657E-02 1.9385E-02 -5.0447E-02 3.6123E-02 -1.1211E-02 1.2885E-03
S11 1.0949E-02 9.1659E-02 -2.8265E-01 3.4490E-01 -2.8517E-01 1.5988E-01 -5.7875E-02 1.2090E-02 -1.0883E-03
S12 3.6830E-02 -3.2221E-03 -4.1848E-02 8.0258E-03 1.0963E-02 -6.3453E-03 1.4316E-03 -1.5162E-04 6.2634E-06
S13 1.9386E-01 -4.0640E-01 4.4838E-01 -3.9587E-01 2.3226E-01 -8.4347E-02 1.8427E-02 -2.2330E-03 1.1564E-04
S14 9.5593E-02 -1.0860E-01 1.7447E-02 1.4693E-02 -9.1221E-03 2.4379E-03 -3.5726E-04 2.7758E-05 -8.9215E-07
S15 -2.2838E-01 7.1654E-02 5.8030E-04 -5.4569E-03 1.5220E-03 -2.0784E-04 1.5452E-05 -5.8039E-07 8.1372E-09
S16 -1.6490E-01 8.5549E-02 -3.1552E-02 8.3826E-03 -1.5611E-03 1.9384E-04 -1.5028E-05 6.5001E-07 -1.1868E-08
Table 3 shown below gives the effective focal lengths f1 to f8 of the respective lenses, the effective focal length f of the imaging lens of the optical imaging lens, half the maximum angle of field of the optical imaging lens HFOV, and the distance TTL 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 of embodiment 1.
TABLE 3
f1(mm) 419.80 f7(mm) -22.06
f2(mm) 19.79 f8(mm) -27.35
f3(mm) 3.62 f(mm 3.86
f4(mm) -6.24 TTL(mm) 5.26
f5(mm) 113.69 HFOV(°) 40.4
f6(mm) 10.69
According to table 3, | f/f1| -0.01 is satisfied between the effective focal length f of the optical imaging lens and the effective focal length f1 of the first lens E1; the effective focal length f of the optical imaging lens and the effective focal length f5 of the fifth lens E5 satisfy | f/f5| ═ 0.03; and f/f6 between the effective focal length f of the optical imaging lens and the effective focal length f6 of the sixth lens E6 is 0.36.
In this embodiment, f/f12 ═ 0.2 is satisfied between the effective focal length f of the optical imaging lens and the combined focal length f12 of the first lens E1 and the second lens E2; f/f34 is equal to 0.54 between the effective focal length f of the optical imaging lens and the combined focal length f34 of the third lens E3 and the fourth lens E4; f/R11 is 0.65 between the effective focal length f of the optical imaging lens and the curvature radius R11 of the object side surface S11 of the sixth lens E6; an effective focal length f of the optical imaging lens and a combined focal length f78 of the seventh lens E7 and the eighth lens E8 satisfy that f/f78 is-0.34; f/EPD is 1.67 between the effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens; 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 half of the diagonal length ImgH of the effective pixel area on the imaging surface of the optical imaging lens meet the condition that TTL/ImgH is 1.59.
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 optical imaging 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 the distortion magnitude values in the case of different angles of view. 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 an imaging surface of light rays after passing through the optical imaging 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. The optical imaging lenses described in embodiment 2 and the following embodiments are the same in arrangement structure as the optical imaging lens described in embodiment 1 except for parameters of the respective lenses of the optical imaging lens, such as a radius of curvature, a thickness, a conic coefficient, an effective focal length, an on-axis pitch, a high-order term coefficient of the respective mirror surfaces, and the like of the respective lenses. For the sake of brevity, descriptions similar to those of embodiment 1 will be omitted.
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 according to embodiment 2 includes first to eighth lenses E1-E8 having an object side surface and an image side surface, respectively.
In this embodiment, the first lens, the second lens, the third lens, the fifth lens, and the sixth lens each have positive optical power; the fourth lens, the seventh lens and the eighth lens all have negative focal power.
Table 4 below shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens of example 2. Table 5 shows the high-order coefficient of each aspherical mirror surface in example 2. Table 6 shows the effective focal lengths f1 to f8 of the respective lenses, the effective focal length f of the imaging lens of the optical imaging lens, half of the maximum angle of view HFOV of the optical imaging lens, and the distance TTL on the optical axis from the object side surface S1 of the first lens L1 to the imaging surface S19 of the optical imaging lens of embodiment 2. Wherein each aspherical surface type can be defined by the formula (1) given in the above-described embodiment 1.
TABLE 4
Figure BDA0001342159680000151
TABLE 5
Flour mark A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 1.8300E-02 -2.5888E-02 -7.9868E-02 2.8215E-01 -3.9487E-01 3.1033E-01 -1.4234E-01 3.5516E-02 -3.7207E-03
S2 5.1242E-02 -2.0409E-01 2.8079E-01 -5.8822E-02 -3.2140E-01 4.6865E-01 -3.0403E-01 9.8483E-02 -1.2886E-02
S3 2.6033E-01 -6.0465E-01 9.9339E-01 -1.1148E+00 7.8101E-01 -3.3597E-01 8.6468E-02 -1.2230E-02 7.3171E-04
S4 4.9951E-02 -3.0317E-01 4.6128E-01 -5.6186E-01 5.1424E-01 -2.9235E-01 9.5839E-02 -1.6658E-02 1.1911E-03
S5 1.5209E-02 -1.7425E-01 2.4925E-01 -3.6240E-01 4.8655E-01 -3.5944E-01 1.3068E-01 -2.0548E-02 8.1950E-04
S6 -1.0520E-01 3.1080E-01 -8.7298E-01 1.3465E+00 -1.1900E+00 6.1977E-01 -1.8763E-01 3.0523E-02 -2.0633E-03
S7 -8.5516E-02 2.5363E-01 -5.2549E-01 2.5802E-01 6.2919E-01 -1.1726E+00 8.5757E-01 -2.9990E-01 4.1209E-02
S8 6.4465E-02 -3.2827E-02 1.2733E-01 -5.0498E-01 8.7832E-01 -7.9343E-01 3.9165E-01 -9.7230E-02 9.1233E-03
S9 -6.5972E-02 7.4116E-02 -1.5307E-01 3.0262E-01 -3.9479E-01 3.0807E-01 -1.3684E-01 3.1758E-02 -2.9854E-03
S10 -8.9412E-02 -3.3205E-03 3.3797E-02 -8.4890E-02 1.3622E-01 -1.2479E-01 6.4333E-02 -1.7013E-02 1.7842E-03
S11 1.2588E-02 7.2812E-02 -2.3776E-01 2.9179E-01 -2.4574E-01 1.4155E-01 -5.2895E-02 1.1384E-02 -1.0490E-03
S12 4.1499E-02 -1.2942E-02 -3.4339E-02 7.4838E-03 8.8427E-03 -5.1674E-03 1.1542E-03 -1.2037E-04 4.8832E-06
S13 1.9201E-01 -4.0124E-01 4.4107E-01 -3.8966E-01 2.2942E-01 -8.3675E-02 1.8353E-02 -2.2311E-03 1.1580E-04
S14 9.0589E-02 -1.0264E-01 1.4450E-02 1.5557E-02 -9.2215E-03 2.4166E-03 -3.4831E-04 2.6631E-05 -8.4260E-07
S15 -2.2964E-01 7.1032E-02 2.2913E-04 -4.7544E-03 1.2136E-03 -1.4220E-04 7.8402E-06 -1.1729E-07 -3.4554E-09
S16 -1.6785E-01 8.7785E-02 -3.2789E-02 8.8755E-03 -1.6897E-03 2.1503E-04 -1.7106E-05 7.5890E-07 -1.4197E-08
TABLE 6
f1(mm) 293.99 f7(mm) -21.68
f2(mm) 19.45 f8(mm) -25.50
f3(mm) 3.65 f(mm) 3.89
f4(mm) -6.20 TTL(mm) 5.30
f5(mm) 128.63 HFOV(°) 40.1
f6(mm) 10.43
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 optical imaging 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 the distortion magnitude values in the case of different angles of view. Fig. 4D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 2, which represents a deviation of different image heights on the imaging plane after light passes through the optical imaging 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 according to embodiment 3 includes first to eighth lenses E1-E8 having an object side surface and an image side surface, respectively.
In this embodiment, the first lens, the second lens, the third lens, the fifth lens, the sixth lens, and the eighth lens each have positive optical power; the fourth lens and the seventh lens both have negative optical power.
Table 7 below shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens of example 3. Table 8 shows the high-order coefficient of each aspherical mirror surface in example 3. Table 9 shows the effective focal lengths f1 to f8 of the respective lenses, the effective focal length f of the imaging lens of the optical imaging lens, half of the maximum field angle HFOV of the optical imaging lens, and the distance TTL on the optical axis from the object side surface S1 of the first lens L1 to the imaging surface S19 of the optical imaging lens of embodiment 3. Wherein each aspherical surface type can be defined by formula (1) given in embodiment 1 above.
TABLE 7
Figure BDA0001342159680000171
Figure BDA0001342159680000181
TABLE 8
Flour mark A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 1.9336E-02 -3.1201E-02 -5.7429E-02 2.2347E-01 -3.0713E-01 2.3366E-01 -1.0348E-01 2.4928E-02 -2.5220E-03
S2 5.1110E-02 -2.0614E-01 2.9430E-01 -1.1557E-01 -1.9910E-01 3.2604E-01 -2.1160E-01 6.7069E-02 -8.5181E-03
S3 2.5482E-01 -5.8544E-01 9.4425E-01 -1.0354E+00 7.1106E-01 -3.0112E-01 7.6522E-02 -1.0707E-02 6.3430E-04
S4 4.6132E-02 -2.7631E-01 3.8108E-01 -4.2231E-01 3.7294E-01 -2.0970E-01 6.8344E-02 -1.1824E-02 8.4223E-04
S5 1.3104E-02 -1.5971E-01 2.0283E-01 -2.6928E-01 3.7272E-01 -2.8112E-01 1.0231E-01 -1.5845E-02 5.9333E-04
S6 -1.0760E-01 3.1023E-01 -8.2753E-01 1.2370E+00 -1.0665E+00 5.4288E-01 -1.6079E-01 2.5606E-02 -1.6956E-03
S7 -8.8603E-02 2.5218E-01 -5.0298E-01 2.6932E-01 4.9109E-01 -9.4198E-01 6.7995E-01 -2.3311E-01 3.1346E-02
S8 6.2704E-02 -1.4998E-02 2.3099E-02 -1.9239E-01 3.5441E-01 -2.7665E-01 9.4312E-02 -5.4135E-03 -2.5824E-03
S9 -6.3786E-02 7.1626E-02 -1.5292E-01 3.0005E-01 -3.8564E-01 2.9633E-01 -1.2951E-01 2.9555E-02 -2.7309E-03
S10 -8.4667E-02 -1.5971E-02 6.8408E-02 -1.3859E-01 1.8547E-01 -1.5179E-01 7.2673E-02 -1.8284E-02 1.8506E-03
S11 1.3497E-02 6.7121E-02 -2.3444E-01 3.0644E-01 -2.6963E-01 1.5868E-01 -5.9520E-02 1.2700E-02 -1.1524E-03
S12 6.2265E-02 -6.1782E-02 1.6058E-02 -1.9614E-02 1.6635E-02 -6.2776E-03 1.1978E-03 -1.1428E-04 4.3507E-06
S13 1.9647E-01 -4.0935E-01 4.4367E-01 -3.8332E-01 2.2279E-01 -8.0874E-02 1.7735E-02 -2.1599E-03 1.1239E-04
S14 7.5709E-02 -8.9808E-02 9.8010E-03 1.6184E-02 -9.0853E-03 2.3341E-03 -3.3129E-04 2.4963E-05 -7.7861E-07
S15 -2.0415E-01 4.4857E-02 1.3165E-02 -8.5048E-03 1.8974E-03 -2.2196E-04 1.3641E-05 -3.5795E-07 9.1772E-10
S16 -1.6916E-01 8.7763E-02 -3.3253E-02 9.2151E-03 -1.7940E-03 2.3248E-04 -1.8754E-05 8.4109E-07 -1.5873E-08
TABLE 9
f1(mm) 207.81 f7(mm) -12.97
f2(mm) 18.74 f8(mm) 281.29
f3(mm) 3.69 f(mm) 3.94
f4(mm) -6.16 TTL(mm) 5.35
f5(mm) 151.57 HFOV(°) 39.7
f6(mm) 11.07
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 optical imaging 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 the distortion magnitude values in the case of different angles of view. 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 optical imaging lens. As can be seen from fig. 6A to 6D, the optical imaging lens system 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 configuration diagram of an optical imaging lens according to embodiment 4 of the present application. As shown in fig. 7, the optical imaging lens according to embodiment 4 includes first to eighth lenses E1-E8 having an object side surface and an image side surface, respectively.
In this embodiment, the first lens, the second lens, the third lens, the sixth lens, and the eighth lens each have positive optical power; the fourth lens, the fifth lens and the seventh lens all have negative focal power.
Table 10 below shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens of example 4. Table 11 shows the high-order coefficient of each aspherical mirror surface in example 4. Table 12 shows the effective focal lengths f1 to f8 of the respective lenses, the effective focal length f of the imaging lens of the optical imaging lens, half of the maximum field angle HFOV of the optical imaging lens, and the distance TTL on the optical axis from the object side surface S1 of the first lens L1 to the imaging surface S19 of the optical imaging lens of example 4. Wherein each aspherical surface type can be defined by the formula (1) given in the above-described embodiment 1.
Watch 10
Figure BDA0001342159680000191
Figure BDA0001342159680000201
TABLE 11
Flour mark A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 1.1831E-02 -2.4531E-02 -4.2902E-02 1.6664E-01 -2.2075E-01 1.6133E-01 -6.8883E-02 1.6092E-02 -1.5889E-03
S2 6.6925E-02 -2.5085E-01 4.1083E-01 -3.5810E-01 1.4917E-01 9.4079E-03 -3.9129E-02 1.5889E-02 -2.1672E-03
S3 2.4449E-01 -5.5151E-01 8.4199E-01 -8.7585E-01 5.7469E-01 -2.3295E-01 5.6632E-02 -7.5735E-03 4.2869E-04
S4 5.1225E-02 -2.3457E-01 2.0072E-01 -1.4196E-01 1.5474E-01 -1.1666E-01 4.6614E-02 -9.2927E-03 7.3468E-04
S5 1.0290E-02 -1.1658E-01 6.3851E-02 -8.3207E-02 2.5259E-01 -2.5696E-01 1.1532E-01 -2.3639E-02 1.7551E-03
S6 -1.0737E-01 1.6516E-01 -2.9449E-01 3.7231E-01 -2.9087E-01 1.3638E-01 -3.7253E-02 5.4626E-03 -3.3280E-04
S7 -1.0323E-01 1.5921E-01 -2.3953E-01 2.1279E-01 -6.1339E-02 -7.1783E-02 8.6799E-02 -3.7005E-02 5.7623E-03
S8 4.5794E-02 5.1733E-03 -9.1739E-02 2.4047E-01 -4.0301E-01 4.3977E-01 -2.8534E-01 9.9860E-02 -1.4373E-02
S9 -5.8318E-02 9.2929E-02 -2.1623E-01 3.5547E-01 -3.7517E-01 2.4292E-01 -9.1708E-02 1.8405E-02 -1.5139E-03
S10 -1.0926E-01 1.1848E-01 -2.2035E-01 2.5554E-01 -1.7132E-01 5.9550E-02 -5.8662E-03 -1.8045E-03 3.7446E-04
S11 -3.1611E-02 1.7486E-01 -3.5440E-01 3.6707E-01 -2.5064E-01 1.1574E-01 -3.5419E-02 6.4820E-03 -5.2632E-04
S12 2.5543E-02 1.8013E-02 -1.0077E-01 8.8172E-02 -4.1290E-02 1.1775E-02 -2.0218E-03 1.9079E-04 -7.5647E-06
S13 1.9604E-01 -3.5758E-01 3.4727E-01 -2.7071E-01 1.4393E-01 -4.8080E-02 9.6945E-03 -1.0818E-03 5.1402E-05
S14 8.4834E-02 -1.0223E-01 3.4104E-02 -4.2292E-03 -2.5566E-04 1.5345E-04 -2.1283E-05 1.3993E-06 -3.7699E-08
S15 -1.6140E-01 2.0188E-02 1.6084E-02 -6.9677E-03 1.2238E-03 -1.0239E-04 2.4540E-06 1.7964E-07 -9.4393E-09
S16 -1.4815E-01 6.7781E-02 -2.3101E-02 6.0271E-03 -1.1403E-03 1.4517E-04 -1.1509E-05 5.0565E-07 -9.3109E-09
TABLE 12
f1(mm) 92.59 f7(mm) -9.61
f2(mm) 39.72 f8(mm) 25.46
f3(mm) 3.77 f(mm) 4.11
f4(mm) -7.41 TTL(mm) 5.53
f5(mm) -652.32 HFOV(°) 38.9
f6(mm) 11.91
Fig. 8A shows on-axis chromatic aberration curves of the optical imaging lens of embodiment 4, which represent deviation of the convergence focus of light rays of different wavelengths after passing through the optical imaging 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 the distortion magnitude values in the case of different angles of view. Fig. 8D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 4, which represents a deviation of different image heights on the imaging surface of light rays after passing through the optical imaging 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 according to embodiment 5 includes first to eighth lenses E1 to E8 having an object side surface and an image side surface, respectively.
In this embodiment, the first lens, the second lens, the third lens, the sixth lens, and the seventh lens each have positive optical power; the fourth lens, the fifth lens and the eighth lens all have negative focal power.
Table 13 below shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens of example 5. Table 14 shows the high-order coefficient of each aspherical mirror surface in example 5. Table 15 shows the effective focal lengths f1 to f8 of the respective lenses, the effective focal length f of the imaging lens of the optical imaging lens, half of the maximum field angle HFOV of the optical imaging lens, and the distance TTL on the optical axis from the object side surface S1 of the first lens L1 to the imaging surface S19 of the optical imaging lens of example 5. Wherein each aspherical surface type can be defined by formula (1) given in embodiment 1 above.
Watch 13
Figure BDA0001342159680000211
Figure BDA0001342159680000221
TABLE 14
Flour mark A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 1.5905E-02 -3.8154E-02 -3.2506E-02 1.9625E-01 -2.9503E-01 2.3460E-01 -1.0698E-01 2.6428E-02 -2.7452E-03
S2 7.2785E-02 -3.0145E-01 5.5459E-01 -5.5965E-01 3.0162E-01 -4.7517E-02 -3.5843E-02 2.0332E-02 -3.2042E-03
S3 2.4722E-01 -6.0521E-01 1.0015E+00 -1.1019E+00 7.5323E-01 -3.1571E-01 7.9033E-02 -1.0854E-02 6.2968E-04
S4 8.4937E-02 -3.7337E-01 4.3955E-01 -3.7703E-01 3.0285E-01 -1.7795E-01 6.2715E-02 -1.1715E-02 8.9268E-04
S5 2.6568E-02 -1.6171E-01 8.1893E-02 -1.8719E-02 1.6417E-01 -2.1179E-01 1.0559E-01 -2.3164E-02 1.8231E-03
S6 -1.1895E-01 2.2023E-01 -4.3880E-01 5.9609E-01 -5.0186E-01 2.5476E-01 -7.5513E-02 1.2021E-02 -7.9453E-04
S7 -1.0653E-01 1.9760E-01 -3.2580E-01 2.6992E-01 1.8474E-02 -2.5959E-01 2.3987E-01 -9.4912E-02 1.4219E-02
S8 4.4553E-02 1.1975E-02 -9.3798E-02 2.0072E-01 -3.0349E-01 3.2530E-01 -2.1397E-01 7.6702E-02 -1.1320E-02
S9 -6.2612E-02 9.7560E-02 -2.3491E-01 4.0744E-01 -4.5176E-01 3.0674E-01 -1.2146E-01 2.5574E-02 -2.2073E-03
S10 -1.0104E-01 8.3646E-02 -1.5243E-01 1.6955E-01 -9.9552E-02 2.0465E-02 7.5529E-03 -4.4315E-03 5.9633E-04
S11 -1.1823E-02 9.1324E-02 -2.0684E-01 2.0499E-01 -1.3897E-01 6.6955E-02 -2.2458E-02 4.6324E-03 -4.2320E-04
S12 -8.2278E-03 4.4702E-02 -9.2580E-02 6.1770E-02 -2.3092E-02 5.5585E-03 -8.6524E-04 7.8700E-05 -3.1275E-06
S13 1.5853E-01 -2.7508E-01 2.4197E-01 -1.8442E-01 9.8714E-02 -3.3101E-02 6.6768E-03 -7.4593E-04 3.5615E-05
S14 1.1264E-01 -1.3410E-01 4.8345E-02 -6.5159E-03 -7.1234E-04 4.3841E-04 -7.6366E-05 6.3279E-06 -2.0919E-07
S15 -1.9049E-01 4.5272E-02 3.1217E-03 -2.3355E-03 1.0529E-04 7.3348E-05 -1.4600E-05 1.1025E-06 -3.0651E-08
S16 -1.4297E-01 6.5908E-02 -2.0948E-02 4.8272E-03 -8.0119E-04 9.1557E-05 -6.6993E-06 2.7737E-07 -4.8739E-09
Watch 15
f1(mm) 82.43 f7(mm) 255.86
f2(mm) 175.42 f8(mm) -11.32
f3(mm) 3.57 f(mm) 4.07
f4(mm) -7.65 TTL(mm) 5.52
f5(mm) -104.91 HFOV(°) 39.1
f6(mm) 10.49
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 optical imaging 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 the distortion magnitude values in the case of different angles of view. 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 plane after light passes through the optical imaging lens. As can be seen from fig. 10A to 10D, the optical imaging lens system 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 according to embodiment 6 includes first to eighth lenses E1 to E8 having an object side surface and an image side surface, respectively.
In this embodiment, the first lens, the second lens, the third lens, the fifth lens, and the sixth lens each have positive optical power; the fourth lens, the seventh lens and the eighth lens all have negative focal power.
Table 16 below shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens of example 6. Table 17 shows the high-order coefficient of each aspherical mirror surface in example 6. Table 18 shows the effective focal lengths f1 to f8 of the respective lenses, the effective focal length f of the imaging lens of the optical imaging lens, half of the maximum field angle HFOV of the optical imaging lens, and the distance TTL on the optical axis from the object side surface S1 of the first lens L1 to the imaging surface S19 of the optical imaging lens of example 6. Wherein each aspherical surface type can be defined by the formula (1) given in the above-described embodiment 1.
TABLE 16
Figure BDA0001342159680000231
Figure BDA0001342159680000241
TABLE 17
Flour mark A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 -1.4315E-05 4.3414E-05 8.8702E-06 7.3556E-05 -5.2208E-05 3.6653E-05 -1.3273E-05 3.0258E-06 -1.8212E-07
S2 -8.3651E-05 -4.6587E-05 4.5647E-05 -1.3876E-04 1.9039E-04 -1.4564E-04 7.4008E-05 -1.5966E-05 1.9826E-06
S3 2.3351E-01 -4.4367E-01 6.4491E-01 -7.4023E-01 5.4436E-01 -2.4299E-01 6.4044E-02 -9.1931E-03 5.5528E-04
S4 1.0760E-01 -4.7144E-01 6.9649E-01 -8.2470E-01 7.6223E-01 -4.4899E-01 1.5347E-01 -2.7779E-02 2.0615E-03
S5 4.9437E-02 -1.8191E-01 2.4211E-02 7.5848E-02 1.6479E-01 -2.8622E-01 1.5647E-01 -3.6462E-02 3.0331E-03
S6 -4.8348E-02 6.0300E-02 -3.7793E-01 7.9430E-01 -8.3196E-01 4.8548E-01 -1.5991E-01 2.7811E-02 -1.9876E-03
S7 -7.2673E-02 3.3108E-01 -1.2231E+00 2.3396E+00 -2.6285E+00 1.7291E+00 -6.1343E-01 9.4570E-02 -2.1634E-03
S8 7.4585E-02 -1.0074E-01 5.7027E-01 -1.9219E+00 3.4017E+00 -3.4681E+00 2.0519E+00 -6.4860E-01 8.4285E-02
S9 -8.0998E-02 1.3904E-01 -3.4997E-01 6.8943E-01 -8.3819E-01 6.0703E-01 -2.5539E-01 5.7495E-02 -5.3488E-03
S10 -1.2764E-01 1.0513E-01 -3.0212E-01 5.4144E-01 -5.5551E-01 3.4223E-01 -1.2335E-01 2.3925E-02 -1.9318E-03
S11 1.6904E-02 1.6715E-01 -5.7016E-01 8.1311E-01 -7.3014E-01 4.1825E-01 -1.4717E-01 2.8897E-02 -2.4131E-03
S12 7.0872E-02 -9.9267E-02 9.2306E-02 -1.0060E-01 6.3445E-02 -2.1691E-02 4.0899E-03 -4.0229E-04 1.6167E-05
S13 2.3838E-01 -5.1715E-01 5.1432E-01 -3.5456E-01 1.5879E-01 -4.3783E-02 7.1777E-03 -6.4872E-04 2.5431E-05
S14 1.5805E-01 -2.6180E-01 1.7629E-01 -7.6645E-02 2.2396E-02 -4.2112E-03 4.7976E-04 -2.9853E-05 7.7317E-07
S15 -2.4498E-01 1.2960E-01 -4.8551E-02 1.4960E-02 -3.3754E-03 5.0338E-04 -4.6250E-05 2.3602E-06 -5.1039E-08
S16 -1.6426E-01 9.4435E-02 -3.7604E-02 1.0043E-02 -1.7708E-03 2.0060E-04 -1.3958E-05 5.4045E-07 -8.8752E-09
Watch 18
Figure BDA0001342159680000242
Figure BDA0001342159680000251
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 optical imaging 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 the distortion magnitude values in the case of different angles of view. 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 of light rays after passing through the optical imaging 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 according to embodiment 7 includes first to eighth lenses E1 to E8 having an object side surface and an image side surface, respectively.
In this embodiment, the second lens, the third lens, the fifth lens, and the sixth lens each have positive optical power; the first lens, the fourth lens, the seventh lens and the eighth lens all have negative focal power.
Table 19 below shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens of example 7. Table 20 shows the high-order coefficient of each aspherical mirror surface in example 7. Table 21 shows the effective focal lengths f1 to f8 of the respective lenses, the effective focal length f of the imaging lens of the optical imaging lens, half of the maximum field angle HFOV of the optical imaging lens, and the distance TTL on the optical axis from the object side surface S1 of the first lens L1 to the imaging surface S19 of the optical imaging lens of example 7. Wherein each aspherical surface type can be defined by the formula (1) given in the above-described embodiment 1.
Watch 19
Figure BDA0001342159680000261
Watch 20
Flour mark A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 1.8679E-03 -2.7328E-03 7.3471E-03 -2.5475E-02 3.7929E-02 -2.7071E-02 9.7317E-03 -1.6082E-03 8.2029E-05
S2 9.2908E-03 -7.9700E-02 3.1895E-01 -7.1719E-01 9.5674E-01 -7.7349E-01 3.7268E-01 -9.8619E-02 1.1052E-02
S3 2.3500E-01 -4.6649E-01 7.1655E-01 -8.3982E-01 6.2008E-01 -2.7685E-01 7.2950E-02 -1.0470E-02 6.3243E-04
S4 1.0964E-01 -4.9746E-01 7.8106E-01 -9.4730E-01 8.5788E-01 -4.9199E-01 1.6460E-01 -2.9314E-02 2.1484E-03
S5 5.7574E-02 -2.4028E-01 2.0219E-01 -2.2672E-01 4.7538E-01 -4.8194E-01 2.3025E-01 -5.1694E-02 4.3551E-03
S6 -4.2826E-02 3.4033E-02 -3.3277E-01 7.5525E-01 -8.1264E-01 4.7972E-01 -1.5885E-01 2.7697E-02 -1.9816E-03
S7 -6.6061E-02 2.8224E-01 -1.0576E+00 2.0063E+00 -2.2026E+00 1.3841E+00 -4.4338E-01 4.8315E-02 3.1408E-03
S8 7.1167E-02 -8.2417E-02 5.1164E-01 -1.7987E+00 3.2405E+00 -3.3399E+00 1.9916E+00 -6.3314E-01 8.2616E-02
S9 -8.1739E-02 1.3562E-01 -3.3073E-01 6.4942E-01 -7.9406E-01 5.7937E-01 -2.4556E-01 5.5655E-02 -5.2089E-03
S10 -1.2678E-01 9.7383E-02 -2.7256E-01 4.8491E-01 -4.9417E-01 3.0244E-01 -1.0807E-01 2.0727E-02 -1.6509E-03
S11 1.5810E-02 1.7913E-01 -6.0971E-01 8.7888E-01 -7.9236E-01 4.5304E-01 -1.5856E-01 3.0919E-02 -2.5639E-03
S12 7.7993E-02 -1.1463E-01 1.0827E-01 -1.1064E-01 6.7440E-02 -2.2701E-02 4.2467E-03 -4.1589E-04 1.6671E-05
S13 2.4546E-01 -5.4265E-01 5.6100E-01 -4.0484E-01 1.9104E-01 -5.6199E-02 9.9906E-03 -9.9430E-04 4.3188E-05
S14 1.5630E-01 -2.5781E-01 1.7334E-01 -7.5674E-02 2.2257E-02 -4.2094E-03 4.8160E-04 -3.0051E-05 7.7968E-07
S15 -2.4625E-01 1.3189E-01 -5.0898E-02 1.6168E-02 -3.7202E-03 5.6126E-04 -5.1966E-05 2.6676E-06 -5.7985E-08
S16 -1.6300E-01 9.2717E-02 -3.6850E-02 9.8549E-03 -1.7366E-03 1.9617E-04 -1.3592E-05 5.2374E-07 -8.5593E-09
TABLE 21
f1(mm) -1338.65 f7(mm) -19.20
f2(mm) 26.90 f8(mm) -45.33
f3(mm) 3.40 f(mm) 3.80
f4(mm) -6.01 TTL(mm) 5.24
f5(mm) 62.17 HFOV(°) 38.2
f6(mm) 12.13
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 optical imaging 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 the distortion magnitude values in the case of different angles of view. 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 of light rays after passing through the optical imaging 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 according to embodiment 8 includes first to eighth lenses E1 to E8 having an object side surface and an image side surface, respectively.
In this embodiment, the second lens, the third lens, the fifth lens, and the sixth lens each have positive optical power; the first lens, the fourth lens, the seventh lens and the eighth lens all have negative focal power.
Table 22 below shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens of example 8. Table 23 shows the high-order coefficient of each aspherical mirror surface in example 8. Table 24 shows the effective focal lengths f1 to f8 of the respective lenses, the effective focal length f of the imaging lens of the optical imaging lens, half of the maximum field angle HFOV of the optical imaging lens, and the distance TTL on the optical axis from the object side surface S1 of the first lens L1 to the imaging surface S19 of the optical imaging lens of embodiment 8. Wherein each aspherical surface type can be defined by the formula (1) given in the above-described embodiment 1.
TABLE 22
Figure BDA0001342159680000281
TABLE 23
Figure BDA0001342159680000282
Figure BDA0001342159680000291
TABLE 24
f1(mm) -1369.05 f7(mm) -26.94
f2(mm) 27.14 f8(mm) -40.52
f3(mm) 3.40 f(mm) 3.71
f4(mm) -6.03 TTL(mm) 5.21
f5(mm) 63.59 HFOV(°) 38.8
f6(mm) 12.11
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 optical imaging 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 the distortion magnitude values in the case of different angles of view. 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 plane after light passes through the optical imaging 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 according to embodiment 9 includes first to eighth lenses E1 to E8 having an object side surface and an image side surface, respectively.
In this embodiment, the first lens, the second lens, the third lens, and the sixth lens each have positive optical power; the fourth lens, the fifth lens, the seventh lens and the eighth lens all have negative focal power.
Table 25 below shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens of example 9. Table 26 shows the high-order coefficient of each aspherical mirror surface in example 9. Table 27 shows the effective focal lengths f1 to f8 of the respective lenses, the effective focal length f of the imaging lens of the optical imaging lens, half of the maximum angle of view HFOV of the optical imaging lens, and the distance TTL on the optical axis from the object side surface S1 of the first lens L1 to the imaging surface S19 of the optical imaging lens of embodiment 9. Wherein each aspherical surface type can be defined by the formula (1) given in the above-described embodiment 1.
TABLE 25
Figure BDA0001342159680000301
Watch 26
Figure BDA0001342159680000302
Figure BDA0001342159680000311
Watch 27
f1(mm) 83.45 f7(mm) -23.92
f2(mm) 162.03 f8(mm) -23.65
f3(mm) 3.50 f(mm) 4.07
f4(mm) -7.26 TTL(mm) 5.50
f5(mm) -127.78 HFOV(°) 39.2
f6(mm) 9.88
Fig. 18A shows an on-axis chromatic aberration curve of the 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 optical imaging 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 the distortion magnitude values in the case of different angles of view. Fig. 18D shows a chromatic aberration of magnification curve of the optical imaging lens of example 9, which represents a deviation of different image heights on the imaging plane after light passes through the optical imaging 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 according to embodiment 10 includes first to eighth lenses E1 to E8 having an object side surface and an image side surface, respectively.
In this embodiment, the first lens, the second lens, the third lens, and the sixth lens each have positive optical power; the fourth lens, the fifth lens, the seventh lens and the eighth lens all have negative focal power.
Table 28 below shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens of example 10. Table 29 shows the high-order coefficient of each aspherical mirror surface in example 10. Table 30 shows the effective focal lengths f1 to f8 of the respective lenses, the effective focal length f of the imaging lens of the optical imaging lens, half of the maximum field angle HFOV of the optical imaging lens, and the distance TTL on the optical axis from the object side surface S1 of the first lens L1 to the imaging surface S19 of the optical imaging lens of example 10. Wherein each aspherical surface type can be defined by the formula (1) given in the above-described embodiment 1.
Watch 28
Figure BDA0001342159680000321
TABLE 29
Figure BDA0001342159680000322
Figure BDA0001342159680000331
Watch 30
f1(mm) 86.81 f7(mm) -151.56
f2(mm) 92.89 f8(mm) -11.40
f3(mm) 3.61 f(mm) 4.07
f4(mm) -7.78 TTL(mm) 5.50
f5(mm) -111.57 HFOV(°) 39.1
f6(mm) 10.16
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 optical imaging 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 the distortion magnitude values in the case of different angles of view. Fig. 20D shows a chromatic aberration of magnification curve of the optical imaging lens of example 10, which represents a deviation of different image heights on the imaging plane after light passes through the optical imaging lens. As can be seen from fig. 20A to 20D, the optical imaging lens system according to embodiment 10 can achieve good imaging quality.
Example 11
An optical imaging lens according to embodiment 11 of the present application is described below with reference to fig. 21 to 22D.
Fig. 21 is a schematic structural view showing an optical imaging lens according to embodiment 11 of the present application. As shown in fig. 21, the optical imaging lens according to embodiment 11 includes first to eighth lenses E1 to E8 having an object side surface and an image side surface, respectively.
In this embodiment, the first lens, the third lens, and the sixth lens each have positive optical power; the second lens, the fourth lens, the fifth lens, the seventh lens and the eighth lens all have negative focal power.
Table 31 below shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens of example 11. Table 32 shows the high-order coefficient of each aspherical mirror surface in example 11. Table 33 shows the effective focal lengths f1 to f8 of the respective lenses, the effective focal length f of the imaging lens of the optical imaging lens, half of the maximum field angle HFOV of the optical imaging lens, and the distance TTL on the optical axis from the object side surface S1 of the first lens L1 to the imaging surface S19 of the optical imaging lens of example 11. Wherein each aspherical surface type can be defined by the formula (1) given in the above-described embodiment 1.
Watch 31
Figure BDA0001342159680000341
Watch 32
Figure BDA0001342159680000342
Figure BDA0001342159680000351
Watch 33
f1(mm) 81.03 f7(mm) -34.35
f2(mm) -662.87 f8(mm) -16.73
f3(mm) 3.48 f(mm) 4.10
f4(mm) -7.59 TTL(mm) 5.53
f5(mm) -132.63 HFOV(°) 39.0
f6(mm) 10.02
Fig. 22A shows on-axis chromatic aberration curves of the optical imaging lens of embodiment 11, which represent deviation of convergence focuses of light rays of different wavelengths after passing through the optical imaging lens. Fig. 22B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 11. Fig. 22C shows a distortion curve of the optical imaging lens of embodiment 11, which represents the distortion magnitude values in the case of different angles of view. Fig. 22D shows a chromatic aberration of magnification curve of the optical imaging lens of example 11, which represents a deviation of different image heights on the imaging plane after light passes through the optical imaging lens. As can be seen from fig. 22A to 22D, the optical imaging lens according to embodiment 11 can achieve good imaging quality.
Example 12
An optical imaging lens according to embodiment 12 of the present application is described below with reference to fig. 23 to 24D.
Fig. 23 is a schematic structural view showing an optical imaging lens according to embodiment 12 of the present application. As shown in fig. 23, the optical imaging lens according to embodiment 12 includes first to eighth lenses E1 to E8 having an object side surface and an image side surface, respectively.
In this embodiment, the first lens, the second lens, the third lens, the fifth lens, and the sixth lens each have positive optical power; the fourth lens, the seventh lens and the eighth lens all have negative focal power.
Table 34 below shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens of example 12. Table 35 shows the high-order coefficient of each aspherical mirror surface in example 12. Table 36 shows the effective focal lengths f1 to f8 of the respective lenses, the effective focal length f of the imaging lens of the optical imaging lens, half of the maximum field angle HFOV of the optical imaging lens, and the distance TTL on the optical axis from the object side surface S1 of the first lens L1 to the imaging surface S19 of the optical imaging lens of example 12. Wherein each aspherical surface type can be defined by formula (1) given in embodiment 1 above.
Watch 34
Figure BDA0001342159680000361
Figure BDA0001342159680000371
Watch 35
Flour mark A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 9.6173E-03 -1.2341E-02 -4.2005E-02 1.4639E-01 -2.1037E-01 1.7172E-01 -8.1696E-02 2.0986E-02 -2.2438E-03
S2 2.5280E-02 -1.1530E-01 2.3148E-01 -2.7087E-01 1.8363E-01 -5.5768E-02 -6.4195E-03 8.7647E-03 -1.6330E-03
S3 2.5128E-01 -5.5100E-01 9.1058E-01 -1.0730E+00 7.8328E-01 -3.4599E-01 9.0453E-02 -1.2908E-02 7.7610E-04
S4 8.1715E-02 -4.3102E-01 7.4698E-01 -9.9291E-01 9.2853E-01 -5.3239E-01 1.7641E-01 -3.1064E-02 2.2522E-03
S5 4.4977E-02 -2.6938E-01 4.4957E-01 -7.3056E-01 9.8246E-01 -7.6929E-01 3.2315E-01 -6.7587E-02 5.4595E-03
S6 -4.2475E-02 2.4577E-02 -2.8406E-01 6.6206E-01 -7.2189E-01 4.2996E-01 -1.4328E-01 2.5096E-02 -1.8017E-03
S7 -4.7652E-02 1.2301E-01 -4.5845E-01 6.6313E-01 -3.3003E-01 -2.2789E-01 3.8537E-01 -1.8448E-01 3.0599E-02
S8 7.5556E-02 -1.3351E-01 6.5809E-01 -2.0012E+00 3.3563E+00 -3.2832E+00 1.8721E+00 -5.7217E-01 7.2110E-02
S9 -8.0236E-02 1.0891E-01 -1.9873E-01 3.4228E-01 -3.9964E-01 2.8831E-01 -1.2252E-01 2.7934E-02 -2.6264E-03
S10 -1.2662E-01 9.0640E-02 -2.0689E-01 3.1876E-01 -2.8241E-01 1.4724E-01 -4.2346E-02 5.8503E-03 -2.6090E-04
S11 2.0994E-02 1.0337E-01 -3.6713E-01 4.8651E-01 -4.1840E-01 2.3542E-01 -8.3063E-02 1.6643E-02 -1.4344E-03
S12 5.6591E-02 -5.8177E-02 3.0218E-02 -4.9463E-02 3.9259E-02 -1.4889E-02 2.9630E-03 -3.0060E-04 1.2309E-05
S13 2.1561E-01 -4.5414E-01 4.7082E-01 -3.7664E-01 2.0498E-01 -7.0610E-02 1.4851E-02 -1.7524E-03 8.9204E-05
S14 1.3052E-01 -1.7802E-01 8.0673E-02 -1.9010E-02 1.9391E-03 2.0227E-04 -8.8230E-05 1.0184E-05 -4.1489E-07
S15 -2.2970E-01 9.7637E-02 -2.3515E-02 4.6698E-03 -8.9438E-04 1.4024E-04 -1.4518E-05 8.3810E-07 -2.0209E-08
S16 -1.5188E-01 7.5246E-02 -2.6052E-02 6.4012E-03 -1.1046E-03 1.2761E-04 -9.2305E-06 3.7327E-07 -6.3835E-09
Watch 36
f1(mm) 1705.58 f7(mm) -30.39
f2(mm) 21.44 f8(mm) -23.61
f3(mm) 3.53 f(m) 3.80
f4(mm) -6.18 TTL(mm) 5.19
f5(mm) 82.30 HFOV(°) 40.8
f6(mm) 11.53
Fig. 24A shows an on-axis chromatic aberration curve of the optical imaging lens of example 12, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the optical imaging lens. Fig. 24B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 12. Fig. 24C shows a distortion curve of the optical imaging lens of embodiment 12, which represents the distortion magnitude values in the case of different angles of view. Fig. 24D shows a chromatic aberration of magnification curve of the optical imaging lens of example 12, which represents a deviation of different image heights on the imaging surface of light rays after passing through the optical imaging lens. As can be seen from fig. 24A to 24D, the optical imaging lens according to embodiment 12 can achieve good imaging quality.
Example 13
An optical imaging lens according to embodiment 13 of the present application is described below with reference to fig. 25 to 26D.
Fig. 25 shows a schematic structural diagram of an optical imaging lens according to embodiment 13 of the present application. As shown in fig. 25, the optical imaging lens according to embodiment 13 includes first to eighth lenses E1 to E8 having an object side surface and an image side surface, respectively.
In this embodiment, the first lens, the second lens, the third lens, the fifth lens, and the sixth lens each have positive optical power; the fourth lens, the seventh lens and the eighth lens all have negative focal power.
Table 37 below shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens of example 13. Table 38 shows the high-order coefficient of each aspherical mirror surface in example 13. Table 39 shows the effective focal lengths f1 to f8 of the respective lenses, the effective focal length f of the imaging lens of the optical imaging lens, half of the maximum field angle HFOV of the optical imaging lens, and the distance TTL on the optical axis from the object side surface S1 of the first lens L1 to the imaging surface S19 of the optical imaging lens of example 13. Wherein each aspherical surface type can be defined by the formula (1) given in the above-described embodiment 1.
Watch 37
Figure BDA0001342159680000381
Figure BDA0001342159680000391
Watch 38
Flour mark A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 1.9155E-02 -3.0281E-02 -6.2878E-02 2.3954E-01 -3.3188E-01 2.5534E-01 -1.1440E-01 2.7876E-02 -2.8524E-03
S2 5.2242E-02 -2.1047E-01 3.0123E-01 -1.1372E-01 -2.2163E-01 3.5965E-01 -2.3530E-01 7.5409E-02 -9.6940E-03
S3 2.5856E-01 -5.9925E-01 9.7569E-01 -1.0807E+00 7.4872E-01 -3.1934E-01 8.1641E-02 -1.1484E-02 6.8371E-04
S4 4.7956E-02 -2.8853E-01 4.1652E-01 -4.8263E-01 4.3311E-01 -2.4452E-01 7.9831E-02 -1.3829E-02 9.8599E-04
S5 1.3837E-02 -1.6720E-01 2.2831E-01 -3.1904E-01 4.3110E-01 -3.2020E-01 1.1633E-01 -1.8203E-02 7.1709E-04
S6 -1.0815E-01 3.1744E-01 -8.6226E-01 1.3033E+00 -1.1341E+00 5.8255E-01 -1.7408E-01 2.7969E-02 -1.8683E-03
S7 -8.7997E-02 2.5637E-01 -5.1679E-01 2.5530E-01 5.8093E-01 -1.0765E+00 7.7702E-01 -2.6795E-01 3.6312E-02
S8 6.3815E-02 -2.1740E-02 6.4124E-02 -3.2217E-01 5.7648E-01 -4.9615E-01 2.1965E-01 -4.3639E-02 2.2187E-03
S9 -6.5665E-02 7.7273E-02 -1.6052E-01 3.0877E-01 -3.9477E-01 3.0352E-01 -1.3305E-01 3.0492E-02 -2.8311E-03
S10 -8.7564E-02 -1.2716E-02 6.5301E-02 -1.3739E-01 1.8767E-01 -1.5576E-01 7.5414E-02 -1.9151E-02 1.9542E-03
S11 1.7679E-02 5.2170E-02 -2.0525E-01 2.6700E-01 -2.3510E-01 1.3937E-01 -5.2957E-02 1.1488E-02 -1.0605E-03
S12 6.5439E-02 -7.2445E-02 3.2449E-02 -3.3709E-02 2.3808E-02 -8.4522E-03 1.5819E-03 -1.5072E-04 5.7844E-06
S13 1.9592E-01 -4.0604E-01 4.2815E-01 -3.5988E-01 2.0495E-01 -7.3264E-02 1.5898E-02 -1.9257E-03 1.0014E-04
S14 8.6989E-02 -1.1058E-01 2.8620E-02 6.3480E-03 -5.9882E-03 1.7428E-03 -2.6466E-04 2.0906E-05 -6.7619E-07
S15 -2.0609E-01 4.7439E-02 1.1876E-02 -8.1997E-03 1.8684E-03 -2.2369E-04 1.4318E-05 -4.1772E-07 2.7481E-09
S16 -1.6889E-01 8.8233E-02 -3.3530E-02 9.2292E-03 -1.7715E-03 2.2574E-04 -1.7918E-05 7.9209E-07 -1.4763E-08
Watch 39
f1(mm) 238.25 f7(mm) -15.99
f2(mm) 19.08 f8(mm) -64.71
f3(mm) 3.67 f(mm) 3.92
f4(mm) -6.15 TTL(mm) 5.33
f5(mm) 131.18 HFOV(°) 39.9
f6(mm) 10.79
Fig. 26A shows an on-axis chromatic aberration curve of the optical imaging lens of example 13, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the optical imaging lens. Fig. 26B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of example 13. Fig. 26C shows a distortion curve of the optical imaging lens of embodiment 13, which represents the distortion magnitude values in the case of different angles of view. Fig. 26D shows a chromatic aberration of magnification curve of the optical imaging lens of example 13, which represents a deviation of different image heights on an imaging surface of light rays after passing through the optical imaging lens. As can be seen from fig. 26A to 26D, the optical imaging lens according to embodiment 13 can achieve good imaging quality.
In summary, examples 1 to 13 each satisfy the relationship shown in table 40 below.
Watch 40
Figure BDA0001342159680000401
The foregoing description is only exemplary of the preferred embodiments 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 (14)

1. The optical imaging lens assembly includes, in order from an object side to an image side along an optical axis, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element, a seventh lens element and an eighth lens element,
it is characterized in that the preparation method is characterized in that,
the first lens, the second lens and the fifth lens respectively have positive focal power or negative focal power;
the third lens and the sixth lens each have positive optical power;
the fourth lens has a negative optical power;
the combined focal power of the seventh lens and the eighth lens is negative focal power;
the number of the lenses of the optical imaging lens with focal power is eight; and
the effective focal length f of the optical imaging lens and the combined focal length f78 of the seventh lens and the eighth lens satisfy that: -0.5< f/f78< 0;
the combined focal length f12 of the first lens and the second lens satisfies: 0< f/f12< 0.5.
2. The optical imaging lens of claim 1, wherein the effective focal length f6 of the sixth lens satisfies: 0< f/f6< 0.5.
3. The optical imaging lens according to claim 1, wherein a combined focal length f34 of the third lens and the fourth lens satisfies: f/f34 is more than or equal to 0.5 and less than 1.0.
4. The optical imaging lens of claim 1, wherein a radius of curvature R7 of the object-side surface of the fourth lens and a radius of curvature R8 of the image-side surface of the fourth lens satisfy: 0< (R7-R8)/(R7+ R8) < 1.0.
5. The optical imaging lens of claim 1, wherein a distance TTL between the object-side surface of the first lens element and an imaging surface of the optical imaging lens along the optical axis and a half ImgH of a diagonal length of an effective pixel area on the imaging surface of the optical imaging lens satisfy: TTL/ImgH is less than or equal to 1.7.
6. The optical imaging lens of any one of claims 1 to 5, wherein the effective focal length f1 of the first lens satisfies: the | f/f1| is less than or equal to 0.1.
7. An optical imaging lens according to any one of claims 1 to 5, wherein a radius of curvature R3 of the object side surface of the second lens and a radius of curvature R4 of the image side surface of the second lens satisfy: 0.6< R3/R4< 1.2.
8. The optical imaging lens according to any one of claims 1 to 5, characterized in that a center thickness CT2 of the second lens on the optical axis and a center thickness CT3 of the third lens on the optical axis satisfy: 0.5< CT2/CT3< 0.8.
9. The optical imaging lens according to any one of claims 1 to 5, characterized in that the effective focal length f5 of the fifth lens satisfies: the | f/f5| is less than or equal to 0.1.
10. An optical imaging lens according to any one of claims 1 to 5, wherein the radius of curvature R11 of the object side surface of the sixth lens satisfies: 0.5< f/R11< 1.0.
11. The optical imaging lens according to any one of claims 1 to 5, characterized in that a center thickness CT6 of the sixth lens on the optical axis and a center thickness CT7 of the seventh lens on the optical axis satisfy: 0.7< CT6/CT7< 1.2.
12. The optical imaging lens of any one of claims 1-5, wherein a radius of curvature R13 of the object-side surface of the seventh lens and a radius of curvature R14 of the image-side surface of the seventh lens satisfy: l (R13-R14)/(R13+ R14) l is less than or equal to 0.5.
13. Optical imaging lens according to any one of claims 1 to 5, characterized in that between the radius of curvature of the object-side surface of the eighth lens R15 and the radius of curvature of the image-side surface of the eighth lens R16: 1 is less than or equal to R15/R16 and less than 1.5.
14. The optical imaging lens of claim 1, wherein the optical imaging lens has an entrance pupil diameter EPD that satisfies: f/EPD is less than or equal to 1.8.
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