CN109491048B - Optical imaging lens - Google Patents

Optical imaging lens Download PDF

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Publication number
CN109491048B
CN109491048B CN201811600338.5A CN201811600338A CN109491048B CN 109491048 B CN109491048 B CN 109491048B CN 201811600338 A CN201811600338 A CN 201811600338A CN 109491048 B CN109491048 B CN 109491048B
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lens
optical imaging
optical
imaging lens
image
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CN109491048A (en
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徐标
张凯元
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Zhejiang Sunny Optics Co Ltd
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Zhejiang Sunny Optics Co Ltd
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Priority to CN202010162087.8A priority Critical patent/CN111308655B/en
Priority to CN201811600338.5A priority patent/CN109491048B/en
Priority to CN202010162074.0A priority patent/CN111221107B/en
Priority to CN202010162694.4A priority patent/CN111221108B/en
Publication of CN109491048A publication Critical patent/CN109491048A/en
Priority to PCT/CN2019/099418 priority patent/WO2020134093A1/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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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lenses (AREA)

Abstract

The application discloses an optical imaging lens, which sequentially comprises the following components from an object side to an image side along an optical axis: a first lens having positive optical power; a second lens having optical power; a third lens having optical power; a fourth lens having optical power; a fifth lens element with positive refractive power having a convex object-side surface and a concave image-side surface; a sixth lens having negative optical power. 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 half of the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens meet the condition that TTL/ImgH is less than 1.4; and 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 < 1.90.

Description

Optical imaging lens
Technical Field
The present application relates to an optical imaging lens, and more particularly, to an optical imaging lens including six lenses.
Background
With the development of science and technology, portable electronic products are gradually rising, and portable electronic products with a camera shooting function are more favored by people, so that the market demand for imaging lenses suitable for the portable electronic products is gradually increasing. On the one hand, since portable electronic products such as smartphones tend to be miniaturized, the total length of the lens is limited, thereby increasing the difficulty in designing the lens. On the other hand, with the improvement of the performance of common photosensitive elements such as photosensitive coupling elements (CCDs) or complementary metal oxide semiconductor elements (CMOS), the number of pixels of the photosensitive elements is continuously increased, so that the image plane size is continuously increased, and the requirement on the imaging performance of the matched imaging lens is higher.
Disclosure of Invention
The present application provides an optical imaging lens applicable to portable electronic products, which at least solves or partially solves at least one of the above-mentioned drawbacks of the prior art.
In one aspect, the present application provides an optical imaging lens, which may include, in order from an object side to an image side along an optical axis: a first lens having positive optical power; a second lens having optical power; a third lens having optical power; a fourth lens having optical power; a fifth lens element with positive refractive power having a convex object-side surface and a concave image-side surface; a sixth lens having negative optical power. 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 half of the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens can meet the condition that TTL/ImgH is less than 1.4; and the total effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens can meet f/EPD < 1.90.
In one embodiment, the distance BFL between the image side surface of the sixth lens element and the imaging surface of the optical imaging lens element on the optical axis and the distance TTL between the object side surface of the first lens element and the imaging surface of the optical imaging lens element on the optical axis may satisfy 0.11+.bfl/TTL.
In one embodiment, the effective focal length f1 of the first lens and the effective focal length f6 of the sixth lens may satisfy 0.8+|f6|/|f1| < 1.2.
In one embodiment, the effective focal length f2 of the second lens and the total effective focal length f of the optical imaging lens can satisfy-2.5 < f 2/f.ltoreq.1.6.
In one embodiment, the combined focal length f234 of the second lens, the third lens, and the fourth lens and the total effective focal length f of the optical imaging lens may satisfy-3.5.ltoreq.f234/f.ltoreq.1.8.
In one embodiment, the combined focal length f56 of the fifth lens and the sixth lens and the total effective focal length f of the optical imaging lens may satisfy-1.7 < f56/f < -1.
In one embodiment, the radius of curvature R1 of the object-side surface of the first lens and the radius of curvature R2 of the image-side surface of the first lens may satisfy-2 < (R1+R2)/(R1-R2) < -1.6.
In one embodiment, the center thickness CT1 of the first lens on the optical axis, the spacing distance T12 of the first lens and the second lens on the optical axis, the center thickness CT2 of the second lens on the optical axis, and the spacing distance T23 of the second lens and the third lens on the optical axis may satisfy 1.35.ltoreq.CT1/(T12+CT2+T23) < 1.6.
In one embodiment, the sum Σct of the center thicknesses of the first lens element to the sixth lens element on the optical axis and the sum Σt of the distances between any two adjacent lens elements of the first lens element to the sixth lens element on the optical axis may satisfy 1.1 < Σct/Σt.ltoreq.1.5.
In one embodiment, the distance T45 between the fourth lens element and the fifth lens element on the optical axis, the center thickness CT5 of the fifth lens element on the optical axis, the distance T56 between the fifth lens element and the sixth lens element on the optical axis, and the distance TTL between the object side surface of the first lens element and the imaging surface of the optical imaging lens element on the optical axis may satisfy 0.3 < (t45+ct5+t56)/TTL being less than or equal to 0.4.
In one embodiment, the on-axis distance SAG11 from the intersection of the object side surface of the sixth lens and the optical axis to the vertex of the effective radius of the object side surface of the sixth lens and the center thickness CT6 of the sixth lens on the optical axis may satisfy-5.3 < SAG11/CT 6. Ltoreq.2.4.
In one embodiment, the maximum effective diameter SD12 of the image side of the sixth lens and the maximum effective diameter SD4 of the image side of the second lens may satisfy 3 < SD12/SD4 < 3.6.
In one embodiment, the on-axis distance SAG1 from the intersection of the maximum effective diameter SD1 of the object-side surface of the first lens and the object-side surface and the optical axis of the first lens to the vertex of the effective radius of the object-side surface of the first lens may satisfy 2.ltoreq.SD 1/SAG1 < 2.2.
In another aspect, the present application further provides an optical imaging lens, which may include, in order from an object side to an image side along an optical axis: a first lens having positive optical power; the object side surface of the second lens is a concave surface; a third lens having optical power, an image side surface of which is a concave surface; a fourth lens having optical power; a fifth lens element with positive refractive power having a convex object-side surface and a concave image-side surface; a sixth lens having optical power. The total effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens can meet the requirement that f/EPD is less than 1.90.
In still another aspect, the present application further provides an optical imaging lens, which may include, in order from an object side to an image side along an optical axis: a first lens having optical power; a second lens having negative optical power; the object side surface of the third lens is a convex surface, and the image side surface of the third lens is a concave surface; a fourth lens having optical power; a fifth lens element with positive refractive power having a convex object-side surface and a concave image-side surface; the object side surface and the image side surface of the sixth lens with optical power are concave. The distance TTL from the object side surface of the first lens element to the imaging surface of the optical imaging lens element on the optical axis, the aperture value Fno of the optical imaging lens element, and half of the diagonal length ImgH of the effective pixel area on the imaging surface of the optical imaging lens element can satisfy ttl×fno/ImgH < 2.5.
The application adopts six lenses, and the optical lens group has at least one beneficial effect of miniaturization, ultra-thin, large image surface, large aperture, high imaging quality and the like by reasonably distributing the focal power, the surface shape, the center thickness of each lens, the axial spacing among the lenses and the like.
Drawings
Other features, objects and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments, taken in conjunction with the accompanying drawings. In the drawings:
fig. 1 shows a schematic configuration diagram 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 astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 1;
fig. 3 is a schematic diagram showing the structure of an optical imaging lens according to embodiment 2 of the present application;
Fig. 4A to 4D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 2;
fig. 5 shows a schematic structural view of an optical imaging lens according to embodiment 3 of the present application;
fig. 6A to 6D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 3;
fig. 7 shows a schematic configuration diagram of 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 magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 4;
fig. 9 shows a schematic configuration diagram of 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 magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 5;
Fig. 11 shows a schematic structural view of 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 magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 6;
fig. 13 is a schematic diagram showing the structure of 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 magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 7;
fig. 15 shows a schematic structural view of 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 magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 8;
fig. 17 is a schematic diagram showing the structure of an optical imaging lens according to embodiment 9 of the present application;
fig. 18A to 18D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 9;
Fig. 19 is a schematic diagram showing the structure of an optical imaging lens according to embodiment 10 of the present application;
Fig. 20A to 20D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 10;
fig. 21 shows a schematic configuration diagram of an optical imaging lens according to embodiment 11 of the present application;
Fig. 22A to 22D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 11.
Detailed Description
For a better understanding of the application, various aspects of the 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 application and is not intended to limit the scope of the 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 the present specification, the expressions of first, second, third, etc. are only used to distinguish one feature from another feature, and do not represent any limitation on the feature. Accordingly, a first lens discussed below may also be referred to as a second lens or a third lens without departing from the teachings of the present application.
In the drawings, the thickness, size, and shape of the lenses have been slightly exaggerated for convenience of explanation. In particular, the spherical or aspherical shape shown in the drawings is shown by way of example. That is, the shape of the spherical or aspherical surface is not limited to the shape of the spherical or aspherical surface shown in the drawings. The figures are merely examples and are 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, then 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 referred to as the object side of the lens, and the surface of each lens closest to the imaging plane is referred to as the image side of the lens.
It will be further understood that the terms "comprises," "comprising," "includes," "including," "having," "containing," 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. Furthermore, when a statement such as "at least one of the following" appears after a list of features that are listed, the entire listed feature is modified instead of modifying a separate element in the list. Furthermore, when describing embodiments of the application, use of "may" means "one or more embodiments of the 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, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.
The features, principles, and other aspects of the present application are described in detail below.
The optical imaging lens according to the exemplary embodiment of the present application may include, for example, six lenses having optical power, i.e., a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens. The six lenses are sequentially arranged from the object side to the image side along the optical axis. In the first lens to the sixth lens, any adjacent two lenses may have an air space therebetween.
In an exemplary embodiment, the first lens may have positive optical power, an object-side surface thereof may be convex, and an image-side surface thereof may be concave; the second lens may have negative optical power, and an image side surface thereof may be concave; the third lens has positive focal power or negative focal power, the object side surface of the third lens can be a convex surface, and the image side surface of the third lens can be a concave surface; the fourth lens has positive focal power or negative focal power, and the object side surface of the fourth lens can be concave; the fifth lens element may have positive refractive power, wherein an object-side surface thereof may be convex and an image-side surface thereof may be concave; the sixth lens element may have negative refractive power, wherein the object-side surface thereof may be concave and the image-side surface thereof may be concave.
The focal power of the first lens is reasonably controlled, so that aberration of an on-axis view field is reduced, and the system on-axis has good imaging performance. The optical power and the surface shape of the second lens, the third lens and the fifth lens are reasonably controlled, which is favorable for balancing the advanced aberration generated by the lenses and ensures that the system has smaller aberration. The focal power of the second lens and the surface shape of the third lens are reasonably controlled, so that the aberration of the on-axis view field is reduced, and the system on-axis has good imaging performance. The optical power and the surface shape of the fifth lens and the optical power and the surface shape of the sixth lens are reasonably controlled, so that the higher-order aberration generated by the lens is balanced, and the system has smaller aberration.
In an exemplary embodiment, the optical imaging lens according to the present application may satisfy the condition that TTL/ImgH < 1.4, where TTL is a distance between an object side surface of the first lens and an imaging surface of the optical imaging lens on an optical axis, and ImgH is a half of a diagonal length of an effective pixel region on the imaging surface of the optical imaging lens. More specifically, TTL and ImgH can further satisfy 1.26.ltoreq.TTL/ImgH.ltoreq.1.28. By constraining the ratio of the total length to the image height of the system, the ultra-thin characteristic of the system can be realized.
In an exemplary embodiment, the optical imaging lens according to the present application may satisfy the condition that f/EPD < 1.90, 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. More specifically, f and EPD may further satisfy 1.88.ltoreq.f/EPD.ltoreq.1.90. The F number of the imaging system with a large image plane is not more than 1.90 by restraining the focal length of the system and the diameter of the entrance pupil of the system, so that the system can be ensured to have a large-aperture imaging effect, and good imaging quality is achieved in a dark environment.
In an exemplary embodiment, the optical imaging lens according to the present application may satisfy the condition that TTL is a distance between an object side surface of the first lens and an imaging surface of the optical imaging lens on an optical axis, fno is an aperture value of the optical imaging lens, and ImgH is a half of a diagonal length of an effective pixel region on the imaging surface of the optical imaging lens. More specifically, TTL, fno, and ImgH may further satisfy 2.37.ltoreq.ttl.fno/imgh.ltoreq.2.41. The ratio of the product of the total length of the system and the relative aperture to the image height is restrained, so that the optical system has the characteristics of ultra-thin and large aperture.
In an exemplary embodiment, the optical imaging lens according to the present application may satisfy the conditional expression 0.11+.bfl/TTL, where BFL is a distance on the optical axis from the image side surface of the sixth lens element to the imaging surface of the optical imaging lens, and TTL is a distance on the optical axis from the object side surface of the first lens element to the imaging surface of the optical imaging lens element. More specifically, BFL and TTL may further satisfy 0.11. Ltoreq.BFL/TTL.ltoreq.0.14. The combination characteristic of the system structure is facilitated by controlling the ratio of the on-axis distance from the sixth lens image side to the imaging side of the optical imaging lens to the total length of the system.
In an exemplary embodiment, the optical imaging lens according to the present application may satisfy the conditional expression 0.8+|f6|/|f1| < 1.2, where f1 is the effective focal length of the first lens and f6 is the effective focal length of the sixth lens. More specifically, f1 and f6 further satisfy 0.80.ltoreq.f6|/|f1|.ltoreq.1.13. By reasonably controlling the ratio of the effective focal lengths of the first lens and the sixth lens, the focal power of the system can be reasonably distributed, so that the positive spherical aberration and the negative spherical aberration of the front group lens and the rear group lens are counteracted.
In an exemplary embodiment, the optical imaging lens according to the present application may satisfy the conditional expression-2.5 < f 2/f.ltoreq.1.6, where f2 is an effective focal length of the second lens and f is a total effective focal length of the optical imaging lens. More specifically, f2 and f may further satisfy-2.41.ltoreq.f2/f.ltoreq.1.60. The off-axis aberration of the optical system is balanced by reasonably adjusting the focal power ratio of the second lens to the system within a certain range.
In an exemplary embodiment, the optical imaging lens according to the present application may satisfy the conditional expression-3.5.ltoreq.f234/f.ltoreq.1.8, where f234 is a combined focal length of the second lens, the third lens, and the fourth lens, and f is a total effective focal length of the optical imaging lens. More specifically, f234 and f can further satisfy-3.50.ltoreq.f234/f.ltoreq.1.80. By restricting the effective focal length of the optical imaging lens and the combined focal length of the second lens, the third lens and the fourth lens within a certain range, the focal power of the system can be reasonably distributed, so that the system has good imaging quality and the sensitivity of the system is effectively reduced.
In an exemplary embodiment, the optical imaging lens according to the present application may satisfy the condition-1.7 < f56/f < -1, where f56 is a combined focal length of the fifth lens and the sixth lens, and f is a total effective focal length of the optical imaging lens. More specifically, f56 and f may further satisfy-1.64.ltoreq.f56/f.ltoreq.1.06. The off-axis aberration of the optical system can be balanced by reasonably adjusting the ratio of the combined focal length of the fifth lens to the focal length of the sixth lens to the focal power of the system within a certain range.
In an exemplary embodiment, the optical imaging lens according to the present application may satisfy the condition that-2 < (r1+r2)/(r1—r2) < -1.6, where R1 is a radius of curvature of an object side surface of the first lens and R2 is a radius of curvature of an image side surface of the first lens. More specifically, R1 and R2 may further satisfy-1.98.ltoreq.R1+R2)/(R1-R2). Ltoreq.1.66. By restricting the ratio of the sum of the curvature radiuses of the object side surface and the image side surface of the first lens to be in a certain range, the curvature of field of each view field can be balanced in a reasonable range, so that the imaging system has good imaging quality.
In an exemplary embodiment, the optical imaging lens according to the present application may satisfy the condition that 1.35+.CT1/(T12+CT2+T23) < 1.6, where CT1 is the center thickness of the first lens on the optical axis, T12 is the distance between the first lens and the second lens on the optical axis, CT2 is the center thickness of the second lens on the optical axis, and T23 is the distance between the second lens and the third lens on the optical axis. More specifically, CT1, T12, CT2 and T23 may further satisfy 1.35.ltoreq.CT1/(T12+CT2+T23). Ltoreq.1.58. By restricting the ratio of the center thickness of the first lens to the sum of the air spaces of the first lens and the second lens on the optical axis, the center thickness of the second lens, and the air gaps of the second lens and the third lens on the optical axis within a certain range, it is possible to ensure that the optical element has good machinability characteristics.
In an exemplary embodiment, the optical imaging lens according to the present application may satisfy the condition that Σct/Σt is less than or equal to 1.5, where Σct is a sum of center thicknesses of the first lens element to the sixth lens element on the optical axis, respectively, and Σt is a sum of spacing distances of any adjacent two lens elements of the first lens element to the sixth lens element on the optical axis. More specifically, sigma CT and Sigma T can further satisfy Sigma CT/Sigma T of 1.12.ltoreq.Sigma CT/Sigma T.ltoreq.1.50. By controlling the ratio of the sum of the center thicknesses of the first lens to the sixth lens on the axis to the sum of the axial intervals of any two adjacent lenses in the first lens to the sixth lens, the total length TTL of the system can be ensured to be within a certain range.
In an exemplary embodiment, the optical imaging lens according to the present application may satisfy the conditional expression 0.3 < (t45+ct5+t56)/ttl+.0.4, where T45 is the distance between the fourth lens and the fifth lens on the optical axis, CT5 is the center thickness of the fifth lens on the optical axis, T56 is the distance between the fifth lens and the sixth lens on the optical axis, and TTL is the distance between the object side surface of the first lens and the imaging surface of the optical imaging lens on the optical axis. More specifically, T45, CT5, T56 and TTL further can satisfy 0.33.ltoreq.T45+CT5+T56)/TTL.ltoreq.0.40. By controlling the ratio of the sum of the air space of the fourth fifth lens, the center thickness of the fifth lens and the air space of the fifth sixth lens to the total length of the system, the system can have ultra-thin characteristics.
In an exemplary embodiment, the optical imaging lens according to the present application may satisfy the condition-5.3 < SAG11/CT 6. Ltoreq.2.4, wherein SAG11 is an on-axis distance from an intersection point of an object side surface of the sixth lens and an optical axis to an effective radius vertex of the object side surface of the sixth lens, and CT6 is a center thickness of the sixth lens on the optical axis. More specifically, SAG11 and CT6 can further satisfy-5.27.ltoreq.SAG 11/CT 6.ltoreq.2.40. By controlling SAG11 and CT6 to meet the requirements, the incidence angle of the chief ray on the object side surface of the sixth lens can be effectively reduced, and the matching degree of the lens and the chip can be improved.
In an exemplary embodiment, the optical imaging lens according to the present application may satisfy the conditional expression 3 < SD12/SD4 < 3.6, wherein SD12 is the maximum effective diameter of the image side of the sixth lens, and SD4 is the maximum effective diameter of the image side of the second lens. More specifically, SD12 and SD4 may further satisfy 3.04.ltoreq.SD 12/SD 4.ltoreq.3.58. By controlling the ratio of the maximum effective diameters of the sixth lens image-side surface and the second lens image-side surface, the performance of the system fringe field of view is advantageously improved.
In an exemplary embodiment, the optical imaging lens according to the present application may satisfy the condition that SD1/SAG1 < 2.2, where SD1 is the maximum effective diameter of the object side surface of the first lens, and SAG1 is the on-axis distance from the intersection point of the object side surface of the first lens and the optical axis to the vertex of the effective radius of the object side surface of the first lens. More specifically, SD1 and SAG1 may further satisfy 2.00.ltoreq.SD 1/SAG 1.ltoreq.2.19. By controlling SD1 and SAG1 to meet the above requirements, it is possible to ensure that the optical lens has good processing characteristics.
In an exemplary embodiment, the optical imaging lens according to the present application may satisfy a condition of TTL/f < 1.2, where TTL is a distance between an object side surface of the first lens and an imaging surface of the optical imaging lens on an optical axis, and f is a total effective focal length of the optical imaging lens. More specifically, TTL and f can further satisfy 1.05.ltoreq.TTL/f.ltoreq.1.11. By controlling TTL and f, the system is miniaturized.
In an exemplary embodiment, the optical imaging lens may further include a diaphragm to improve imaging quality of the lens group. The diaphragm may be disposed between the object side and the first lens.
Optionally, the optical imaging lens may further include a filter for correcting color deviation and/or a protective glass for protecting a photosensitive element located on the imaging surface.
The optical imaging lens according to the above embodiment of the present application may employ a plurality of lenses, for example, six lenses as described above. By reasonably distributing the focal power, the surface shape, the center thickness of each lens, the axial spacing between each lens and the like, the volume of the lens can be effectively reduced, the sensitivity of the lens can be reduced, and the processability of the lens can be improved, so that the optical imaging lens is more beneficial to production and processing and is applicable to portable electronic products. The optical lens group with the configuration can also have the beneficial effects of ultra-thin, large image plane, large aperture, high imaging quality and the like.
In an embodiment of the present application, at least one of the mirrors of each lens is an aspherical mirror, i.e., at least one of the object side surface and the image side surface of each of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, and the sixth lens is an aspherical mirror. The aspherical 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 a better radius of curvature characteristic, and has advantages of improving distortion aberration and improving astigmatic aberration. By adopting the aspherical lens, aberration occurring at the time of imaging can be eliminated as much as possible, thereby improving imaging quality. Optionally, the object side surface and the image side surface of each of the first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens are aspherical mirror surfaces.
However, it will be appreciated by those skilled in the art that the number of lenses making up the optical imaging lens can be varied to achieve the various results and advantages described in this specification without departing from the technical solution claimed in the present application. For example, although six lenses are described as an example in the embodiment, the optical imaging lens is not limited to include six lenses. The optical imaging lens may also include other numbers of lenses, if desired.
Specific examples of the optical imaging lens applicable to the above-described embodiments are further described below with reference to the accompanying 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 configuration diagram of an optical imaging lens according to embodiment 1 of the present application.
As shown in fig. 1, an optical imaging lens according to an exemplary embodiment of the present application sequentially includes, along an optical axis from an object side to an image side: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, filter E7, and imaging plane S15.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is concave, and an image-side surface S4 thereof is concave. The third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has positive refractive power, wherein an object-side surface S7 thereof is concave and an image-side surface S8 thereof is convex. The fifth lens element E5 has positive refractive power, wherein an object-side surface S9 thereof is convex, and an image-side surface S10 thereof is concave. The sixth lens element E6 has negative refractive power, wherein an object-side surface S11 thereof is concave, and an image-side surface S12 thereof is concave. The filter E7 has an object side surface S13 and an image side surface S14. Light from the object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.
Table 1 shows the surface types, the radii of curvature, the thicknesses, the materials, and the cone coefficients of the respective lenses of the optical imaging lens of example 1, in which the units of the radii of curvature and the thicknesses are millimeters (mm).
TABLE 1
In embodiment 1, the object side surface and the image side surface of any one of the first lens E1 to the sixth lens E6 are aspherical, and the surface profile x of each aspherical lens can be defined by, but not limited to, the following aspherical formula:
Wherein x is the distance vector height from the vertex of the aspheric surface when the aspheric surface is at the position with the height h along the optical axis direction; c is the paraxial curvature of the aspheric surface, c=1/R (i.e., paraxial curvature c is the inverse of radius of curvature R in table 1 above); k is the conic coefficient (given in table 1); ai is the correction coefficient of the aspherical i-th order. The following Table 2 shows the higher order coefficients A 4、A6、A8、A10、A12、A14、A16、A18 and A 20 that can be used for each of the aspherical mirrors S1-S12 in example 1.
Face number A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 2.196E-03 -3.261E-02 1.467E-01 -3.843E-01 6.074E-01 -5.925E-01 3.473E-01 -1.123E-01 1.513E-02
S2 -4.728E-02 4.898E-02 -1.272E-01 3.862E-01 -8.106E-01 1.026E+00 -7.730E-01 3.205E-01 -5.621E-02
S3 -5.011E-02 1.611E-01 -1.095E-01 1.329E-01 -5.042E-01 1.016E+00 -1.034E+00 5.359E-01 -1.122E-01
S4 -5.246E-02 3.161E-01 -7.501E-01 2.096E+00 -4.034E+00 4.513E+00 -2.359E+00 7.722E-02 3.060E-01
S5 -1.245E-01 -1.635E-01 1.653E+00 -7.295E+00 1.889E+01 -3.041E+01 2.982E+01 -1.633E+01 3.840E+00
S6 -9.724E-02 -3.858E-02 3.059E-01 -1.109E+00 2.203E+00 -2.754E+00 2.132E+00 -9.385E-01 1.823E-01
S7 -1.156E-01 -8.524E-02 6.175E-01 -1.745E+00 2.861E+00 -2.877E+00 1.705E+00 -5.108E-01 3.047E-02
S8 -1.325E-01 4.776E-02 7.220E-02 -1.997E-01 2.562E-01 -1.758E-01 6.482E-02 -1.185E-02 7.198E-04
S9 -7.758E-02 -7.087E-03 -2.787E-03 4.271E-03 1.944E-04 -8.723E-04 3.077E-04 -4.940E-05 3.494E-06
S10 -1.294E-02 -3.205E-02 1.993E-02 -1.042E-02 4.004E-03 -9.692E-04 1.295E-04 -5.654E-06 -7.064E-07
S11 -7.858E-02 8.612E-02 -5.365E-02 1.886E-02 -3.874E-03 4.814E-04 -3.590E-05 1.481E-06 -1.928E-08
S12 -1.417E-01 1.060E-01 -6.590E-02 2.710E-02 -7.195E-03 1.234E-03 -1.330E-04 8.026E-06 -1.314E-07
TABLE 2
Table 3 shows effective focal lengths f1 to f6 of the respective lenses in embodiment 1, a total effective focal length f of the optical imaging lens, a distance TTL on the optical axis from the object side surface S1 to the imaging surface S15 of the first lens E1, and a half of the diagonal length ImgH of the effective pixel region on the imaging surface S15.
TABLE 3 Table 3
The optical imaging lens in embodiment 1 satisfies:
TTL/imgh=1.27, where TTL is the distance between the object side surface S1 of the first lens E1 and the imaging surface S15 on the optical axis, and ImgH is half of the diagonal length of the effective pixel area on the imaging surface S15;
f/EPD = 1.88, where f is the total effective focal length of the optical imaging lens, EPD is the entrance pupil diameter of the optical imaging lens;
Ttl=fno/imgh=2.40, where TTL is the distance between the object side surface S1 of the first lens E1 and the imaging surface S15 on the optical axis, the aperture value of the Fno optical imaging lens, and ImgH is half of the diagonal length of the effective pixel area on the imaging surface S15;
BFL/ttl=0.11, where BFL is the distance between the image side surface S12 of the sixth lens element E6 and the imaging surface S15 on the optical axis, and TTL is the distance between the object side surface S1 of the first lens element E1 and the imaging surface S15 on the optical axis;
f6/f1=1.07, where f1 is the effective focal length of the first lens E1 and f6 is the effective focal length of the sixth lens E6;
f2/f= -1.73, wherein f2 is the effective focal length of the second lens E2, and f is the total effective focal length of the optical imaging lens;
f234/f= -2.60, wherein f234 is the combined focal length of the second lens E2, the third lens E3 and the fourth lens E4, and f is the total effective focal length of the optical imaging lens;
f56/f= -1.07, wherein f56 is the combined focal length of the fifth lens E5 and the sixth lens E6, and f is the total effective focal length of the optical imaging lens;
(r1+r2)/(r1—r2) = -1.66, wherein R1 is the radius of curvature of the object-side surface S1 of the first lens element E1, and R2 is the radius of curvature of the image-side surface S2 of the first lens element E1;
CT 1/(t12+ct2+t23) =1.48, where CT1 is the center thickness of the first lens E1 on the optical axis, T12 is the distance between the first lens E1 and the second lens E2 on the optical axis, CT2 is the center thickness of the second lens E2 on the optical axis, and T23 is the distance between the second lens E2 and the third lens E3 on the optical axis;
Σct/Σt=1.43, wherein Σct is the sum of the thicknesses of the centers of the first lens element E1 to the sixth lens element E6 on the optical axis, respectively, Σt is the sum of the distances between any two adjacent lens elements of the first lens element E1 to the sixth lens element E6 on the optical axis;
(t45+ct5+t56)/ttl=0.35, where T45 is the distance between the fourth lens element E4 and the fifth lens element E5 on the optical axis, CT5 is the center thickness of the fifth lens element E5 on the optical axis, T56 is the distance between the fifth lens element E5 and the sixth lens element E6 on the optical axis, and TTL is the distance between the object side surface S1 of the first lens element E1 and the imaging surface S15 on the optical axis;
SAG11/CT6 = -3.33, where SAG11 is the on-axis distance from the intersection point of the object side surface S11 of the sixth lens E6 and the optical axis to the vertex of the effective radius of the object side surface S11 of the sixth lens E6, and CT6 is the center thickness of the sixth lens E6 on the optical axis;
SD12/SD 4=3.21, wherein SD12 is the maximum effective diameter of the image side surface S12 of the sixth lens E6, SD4 is the maximum effective diameter of the image side surface S4 of the second lens E2;
SD 1/sag1=2.07, where SD1 is the maximum effective diameter of the object side surface S1 of the first lens E1, and SAG1 is the axial distance from the intersection point of the object side surface S1 of the first lens E1 and the optical axis to the vertex of the effective radius of the object side surface S1 of the first lens E1.
Fig. 2A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 1, which indicates the deviation of the converging focus after light rays of different wavelengths pass through the lens. Fig. 2B shows an astigmatism curve of the optical imaging lens of embodiment 1, which represents meridional image plane curvature and sagittal image plane curvature. 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 magnification chromatic aberration curve of the optical imaging lens of embodiment 1, which represents the 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 provided in 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 portions similar to embodiment 1 will be omitted for brevity. Fig. 3 shows a schematic configuration of an optical imaging lens according to embodiment 2 of the present application.
As shown in fig. 3, the optical imaging lens according to the exemplary embodiment of the present application sequentially includes, from an object side to an image side along an optical axis: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, filter E7, and imaging plane S15.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is concave, and an image-side surface S4 thereof is concave. The third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has positive refractive power, wherein an object-side surface S7 thereof is concave and an image-side surface S8 thereof is convex. The fifth lens element E5 has positive refractive power, wherein an object-side surface S9 thereof is convex, and an image-side surface S10 thereof is concave. The sixth lens element E6 has negative refractive power, wherein an object-side surface S11 thereof is concave, and an image-side surface S12 thereof is concave. The filter E7 has an object side surface S13 and an image side surface S14. Light from the object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.
Table 4 shows the surface types, the radii of curvature, the thicknesses, the materials, and the cone coefficients of the respective lenses of the optical imaging lens of example 2, in which the units of the radii of curvature and the thicknesses are millimeters (mm).
TABLE 4 Table 4
In embodiment 2, the object side surface and the image side surface of any one of the first to sixth lenses E1 to E6 are aspherical surfaces.
Table 5 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 2, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
Face number A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 3.761E-03 -4.615E-02 2.084E-01 -5.389E-01 8.415E-01 -8.126E-01 4.731E-01 -1.524E-01 2.061E-02
S2 -6.677E-02 8.206E-03 3.091E-01 -1.064E+00 1.923E+00 -2.099E+00 1.358E+00 -4.747E-01 6.859E-02
S3 -8.502E-02 1.719E-01 1.467E-01 -9.518E-01 1.785E+00 -1.841E+00 1.085E+00 -3.256E-01 3.569E-02
S4 -5.710E-02 2.932E-01 -4.216E-01 5.893E-01 -1.688E-01 -1.644E+00 3.655E+00 -3.208E+00 1.073E+00
S5 -1.154E-01 -1.818E-01 1.775E+00 -7.775E+00 1.996E+01 -3.179E+01 3.082E+01 -1.669E+01 3.884E+00
S6 -9.141E-02 -3.012E-02 2.634E-01 -9.942E-01 2.038E+00 -2.659E+00 2.170E+00 -1.014E+00 2.095E-01
S7 -1.116E-01 -8.675E-02 6.524E-01 -1.904E+00 3.249E+00 -3.417E+00 2.131E+00 -6.826E-01 5.091E-02
S8 -1.258E-01 4.465E-02 8.368E-02 -2.320E-01 3.058E-01 -2.169E-01 8.297E-02 -1.577E-02 1.016E-03
S9 -7.287E-02 1.635E-03 -1.566E-02 1.200E-02 -3.084E-03 1.541E-04 1.051E-04 -2.897E-05 2.897E-06
S10 -1.334E-02 -2.468E-02 1.472E-02 -1.003E-02 5.029E-03 -1.492E-03 2.410E-04 -1.540E-05 -8.596E-07
S11 -1.033E-01 1.102E-01 -6.024E-02 1.538E-02 8.879E-04 -2.164E-03 8.828E-04 -2.150E-04 3.516E-05
S12 -1.677E-01 1.291E-01 -7.828E-02 3.129E-02 -8.096E-03 1.354E-03 -1.427E-04 8.593E-06 -1.789E-07
TABLE 5
Table 6 shows effective focal lengths f1 to f6 of the respective lenses in embodiment 2, a total effective focal length f of the optical imaging lens, a distance TTL on the optical axis from the object side surface S1 to the imaging surface S15 of the first lens E1, and a half of the diagonal length ImgH of the effective pixel region on the imaging surface S15.
f1(mm) 3.53 f6(mm) -3.68
f2(mm) -8.02 f(mm) 4.72
f3(mm) 32.35 TTL(mm) 5.00
f4(mm) 101.71 ImgH(mm) 3.93
f5(mm) 17.71
TABLE 6
Fig. 4A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 2, which indicates the deviation of the converging focus after light rays of different wavelengths pass through the lens. Fig. 4B shows an astigmatism curve of the optical imaging lens of embodiment 2, which represents meridional image plane curvature and sagittal image plane curvature. 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 magnification chromatic aberration 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 provided in 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 configuration 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 the exemplary embodiment of the present application sequentially includes, from an object side to an image side along an optical axis: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, filter E7, and imaging plane S15.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is concave, and an image-side surface S4 thereof is concave. The third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has positive refractive power, wherein an object-side surface S7 thereof is concave and an image-side surface S8 thereof is convex. The fifth lens element E5 has positive refractive power, wherein an object-side surface S9 thereof is convex, and an image-side surface S10 thereof is concave. The sixth lens element E6 has negative refractive power, wherein an object-side surface S11 thereof is concave, and an image-side surface S12 thereof is concave. The filter E7 has an object side surface S13 and an image side surface S14. Light from the object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.
Table 7 shows the surface types, the radii of curvature, the thicknesses, the materials, and the cone coefficients of the respective lenses of the optical imaging lens of example 3, in which the units of the radii of curvature and the thicknesses are millimeters (mm).
TABLE 7
In embodiment 3, the object side surface and the image side surface of any one of the first to sixth lenses E1 to E6 are aspherical surfaces.
Table 8 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 3, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
Face number A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 1.658E-03 -2.965E-02 1.390E-01 -3.750E-01 6.068E-01 -6.042E-01 3.607E-01 -1.086E-01 1.624E-02
S2 -4.099E-02 4.794E-02 -1.565E-01 4.713E-01 -9.610E-01 1.196E+00 -8.931E-01 3.687E-01 -6.459E-02
S3 -4.056E-02 1.734E-01 -2.196E-01 4.304E-01 -1.011E+00 1.585E+00 -1.439E+00 7.007E-01 -1.414E-01
S4 -5.252E-02 3.357E-01 -7.469E-01 1.793E+00 -2.870E+00 2.237E+00 1.825E-01 -1.462E+00 6.995E-01
S5 -1.460E-01 -8.720E-02 1.286E+00 -5.962E+00 1.566E+01 -2.544E+01 2.517E+01 -1.394E+01 3.326E+00
S6 -9.704E-02 -3.900E-02 2.907E-01 -1.046E+00 2.084E+00 -2.649E+00 2.112E+00 -9.689E-01 1.977E-01
S7 -1.076E-01 -1.080E-01 7.449E-01 -2.170E+00 3.715E+00 -3.900E+00 2.407E+00 -7.500E-01 4.694E-02
S8 -1.292E-01 4.798E-02 7.594E-02 -2.168E-01 2.925E-01 -2.112E-01 8.179E-02 -1.567E-02 9.934E-04
S9 -8.288E-02 4.412E-04 -1.216E-02 9.847E-03 -6.078E-04 -1.362E-03 5.438E-04 -8.989E-05 6.175E-06
S10 -1.854E-02 -2.926E-02 1.954E-02 -1.133E-02 4.716E-03 -1.173E-03 1.530E-04 -5.948E-06 -8.326E-07
S11 -8.081E-02 8.062E-02 -4.706E-02 1.586E-02 -3.141E-03 3.769E-04 -2.725E-05 1.098E-06 -1.147E-08
S12 -1.434E-01 1.068E-01 -6.739E-02 2.853E-02 -7.772E-03 1.352E-03 -1.461E-04 8.766E-06 -1.477E-07
TABLE 8
Table 9 shows effective focal lengths f1 to f6 of the respective lenses in embodiment 3, a total effective focal length f of the optical imaging lens, a distance TTL on the optical axis from the object side surface S1 to the imaging surface S15 of the first lens E1, and a half of the diagonal length ImgH of the effective pixel region on the imaging surface S15.
f1(mm) 3.50 f6(mm) -3.80
f2(mm) -7.91 f(mm) 4.72
f3(mm) 25.43 TTL(mm) 5.00
f4(mm) 149.18 ImgH(mm) 3.93
f5(mm) 21.75
TABLE 9
Fig. 6A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 3, which indicates a convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 6B shows an astigmatism curve of the optical imaging lens of embodiment 3, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 6C shows a distortion curve of the optical imaging lens of embodiment 3, which represents distortion magnitude values in different image heights. Fig. 6D shows a magnification chromatic aberration curve of the optical imaging lens of embodiment 3, which represents the 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 provided in 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, an optical imaging lens according to an exemplary embodiment of the present application sequentially includes, along an optical axis from an object side to an image side: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, filter E7, and imaging plane S15.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is concave, and an image-side surface S4 thereof is concave. The third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has positive refractive power, wherein an object-side surface S7 thereof is concave and an image-side surface S8 thereof is convex. The fifth lens element E5 has positive refractive power, wherein an object-side surface S9 thereof is convex, and an image-side surface S10 thereof is concave. The sixth lens element E6 has negative refractive power, wherein an object-side surface S11 thereof is concave, and an image-side surface S12 thereof is concave. The filter E7 has an object side surface S13 and an image side surface S14. Light from the object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.
Table 10 shows the surface types, the radii of curvature, the thicknesses, the materials, and the cone coefficients of the respective lenses of the optical imaging lens of example 4, in which the units of the radii of curvature and the thicknesses are millimeters (mm).
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Table 10
In embodiment 4, the object side surface and the image side surface of any one of the first to sixth lenses E1 to E6 are aspherical surfaces.
Table 11 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 4, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
Face number A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 2.169E-03 -3.353E-02 1.510E-01 -3.947E-01 6.219E-01 -6.048E-01 3.534E-01 -1.139E-01 1.532E-02
S2 -4.376E-02 5.324E-02 -1.342E-01 3.681E-01 -7.387E-01 9.137E-01 -6.791E-01 2.794E-01 -4.883E-02
S3 -5.417E-02 1.962E-01 -2.514E-01 4.238E-01 -8.798E-01 1.318E+00 -1.172E+00 5.640E-01 -1.128E-01
S4 -6.475E-02 3.915E-01 -1.127E+00 3.479E+00 -7.554E+00 1.033E+01 -8.250E+00 3.404E+00 -4.971E-01
S5 -1.265E-01 -1.589E-01 1.630E+00 -7.022E+00 1.769E+01 -2.774E+01 2.657E+01 -1.426E+01 3.299E+00
S6 -7.945E-02 -7.472E-02 3.896E-01 -1.220E+00 2.244E+00 -2.664E+00 1.995E+00 -8.635E-01 1.674E-01
S7 -9.867E-02 -1.427E-01 7.808E-01 -2.032E+00 3.168E+00 -3.073E+00 1.778E+00 -5.287E-01 3.323E-02
S8 -1.197E-01 5.703E-03 1.749E-01 -3.619E-01 4.127E-01 -2.669E-01 9.590E-02 -1.744E-02 1.080E-03
S9 -7.113E-02 -9.402E-03 -2.711E-05 1.780E-04 2.859E-03 -1.768E-03 4.734E-04 -6.552E-05 4.156E-06
S10 -8.821E-03 -3.218E-02 2.046E-02 -1.169E-02 4.875E-03 -1.259E-03 1.797E-04 -9.534E-06 -7.268E-07
S11 -8.391E-02 9.007E-02 -5.495E-02 1.912E-02 -3.909E-03 4.842E-04 -3.598E-05 1.478E-06 -2.001E-08
S12 -1.462E-01 1.089E-01 -6.627E-02 2.662E-02 -6.916E-03 1.162E-03 -1.226E-04 7.273E-06 -1.252E-07
TABLE 11
Table 12 shows effective focal lengths f1 to f6 of the respective lenses in embodiment 4, a total effective focal length f of the optical imaging lens, a distance TTL on the optical axis from the object side surface S1 to the imaging surface S15 of the first lens E1, and a half of the diagonal length ImgH of the effective pixel region on the imaging surface S15.
f1(mm) 3.53 f6(mm) -3.69
f2(mm) -7.55 f(mm) 4.72
f3(mm) 21.86 TTL(mm) 5.00
f4(mm) 181.72 ImgH(mm) 3.93
f5(mm) 18.38
Table 12
Fig. 8A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 4, which indicates a convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 8B shows an astigmatism curve of the optical imaging lens of embodiment 4, which represents meridional image plane curvature and sagittal image plane curvature. 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 magnification chromatic aberration 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 provided in 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 configuration of an optical imaging lens according to embodiment 5 of the present application.
As shown in fig. 9, an optical imaging lens according to an exemplary embodiment of the present application sequentially includes, along an optical axis from an object side to an image side: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, filter E7, and imaging plane S15.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is concave, and an image-side surface S4 thereof is concave. The third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has positive refractive power, wherein an object-side surface S7 thereof is concave and an image-side surface S8 thereof is convex. The fifth lens element E5 has positive refractive power, wherein an object-side surface S9 thereof is convex, and an image-side surface S10 thereof is concave. The sixth lens element E6 has negative refractive power, wherein an object-side surface S11 thereof is concave, and an image-side surface S12 thereof is concave. The filter E7 has an object side surface S13 and an image side surface S14. Light from the object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.
Table 13 shows the surface types, the radii of curvature, the thicknesses, the materials, and the cone coefficients of the respective lenses of the optical imaging lens of example 5, in which the units of the radii of curvature and the thicknesses are millimeters (mm).
TABLE 13
In embodiment 5, the object side surface and the image side surface of any one of the first to sixth lenses E1 to E6 are aspherical surfaces.
Table 14 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 5, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
Face number A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 1.173E-03 -1.823E-02 9.987E-02 -2.978E-01 5.218E-01 -5.526E-01 3.456E-01 -1.174E-01 1.640E-02
S2 -2.553E-02 -1.099E-03 -9.144E-03 3.833E-01 -1.655E-01 3.090E-01 -2.944E-01 1.423E-01 -2.775E-02
S3 -1.384E-02 7.876E-02 -1.192E-01 2.889E-01 -6.523E-01 9.698E-01 -8.485E-01 4.027E-01 -7.966E-02
S4 -1.991E-02 2.975E-01 -1.182E+00 4.322E+00 -1.033E+01 1.555E+01 -1.409E+01 6.985E+00 -1.429E+00
S5 -1.110E-01 -6.259E-02 8.572E-01 -3.942E+00 1.013E+01 -1.598E+01 1.529E+01 -8.172E+00 1.881E+00
S6 -7.739E-02 -5.806E-03 1.239E-01 -5.001E-01 9.868E-01 -1.221E+00 9.439E-01 -4.233E-01 8.597E-02
S7 -9.351E-02 -1.335E-01 8.008E-01 -2.163E+00 3.532E+00 -3.592E+00 2.210E+00 -7.397E-01 8.884E-02
S8 -1.202E-01 -1.765E-02 2.348E-01 -4.691E-01 5.329E-01 -3.413E-01 1.189E-01 -2.016E-02 1.066E-03
S9 -4.830E-02 -5.534E-02 6.384E-02 -6.102E-02 3.693E-02 -1.267E-02 2.458E-03 -2.555E-04 1.142E-05
S10 4.465E-03 -5.071E-02 3.099E-02 -1.568E-02 6.051E-03 -1.497E-03 2.162E-04 -1.521E-05 9.986E-08
S11 -1.439E-01 1.118E-01 -5.512E-02 1.790E-02 -3.703E-03 4.844E-04 -3.883E-05 1.739E-06 -3.271E-08
S12 -2.004E-01 1.373E-01 -7.578E-02 2.804E-02 -6.759E-03 1.059E-03 -1.057E-04 6.250E-06 -1.682E-07
TABLE 14
Table 15 shows effective focal lengths f1 to f6 of the respective lenses in embodiment 5, a total effective focal length f of the optical imaging lens, a distance TTL on the optical axis from the object side surface S1 to the imaging surface S15 of the first lens E1, and a half of the diagonal length ImgH of the effective pixel region on the imaging surface S15.
f1(mm) 3.87 f6(mm) -3.78
f2(mm) -9.59 f(mm) 4.73
f3(mm) 63.20 TTL(mm) 5.00
f4(mm) 52.80 ImgH(mm) 3.93
f5(mm) 13.35
TABLE 15
Fig. 10A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 5, which indicates a convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 10B shows an astigmatism curve of the optical imaging lens of embodiment 5, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 10C shows a distortion curve of the optical imaging lens of embodiment 5, which represents distortion magnitude values corresponding to different fields of view. Fig. 10D shows a magnification chromatic aberration curve of the optical imaging lens of embodiment 5, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 10A to 10D, the optical imaging lens provided in 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 diagram of an optical imaging lens according to embodiment 6 of the present application.
As shown in fig. 11, an optical imaging lens according to an exemplary embodiment of the present application sequentially includes, along an optical axis from an object side to an image side: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, filter E7, and imaging plane S15.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is concave, and an image-side surface S4 thereof is concave. The third lens element E3 has negative refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has positive refractive power, wherein an object-side surface S7 thereof is concave and an image-side surface S8 thereof is convex. The fifth lens element E5 has positive refractive power, wherein an object-side surface S9 thereof is convex, and an image-side surface S10 thereof is concave. The sixth lens element E6 has negative refractive power, wherein an object-side surface S11 thereof is concave, and an image-side surface S12 thereof is concave. The filter E7 has an object side surface S13 and an image side surface S14. Light from the object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.
Table 16 shows the surface types, the radii of curvature, the thicknesses, the materials, and the cone coefficients of the respective lenses of the optical imaging lens of example 6, in which the units of the radii of curvature and the thicknesses are millimeters (mm).
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Table 16
In embodiment 6, the object side surface and the image side surface of any one of the first to sixth lenses E1 to E6 are aspherical surfaces.
Table 17 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 6, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
Face number A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 -2.579E-04 -1.360E-02 8.933E-02 -2.725E-01 4.680E-01 -4.782E-01 2.868E-01 -9.307E-02 1.233E-02
S2 -3.575E-02 9.209E-03 -8.816E-03 1.168E-01 -3.755E-01 5.688E-01 -4.755E-01 2.105E-01 -3.853E-02
S3 -4.114E-02 7.889E-02 3.900E-02 -3.525E-02 -3.433E-01 8.500E-01 -8.838E-01 4.528E-01 -9.298E-02
S4 -2.765E-02 2.734E-01 -9.165E-01 3.132E+00 -6.587E+00 8.055E+00 -5.165E+00 1.224E+00 1.355E-01
S5 -1.004E-01 -2.037E-01 1.775E+00 -7.677E+00 1.977E+01 -3.167E+01 3.088E+01 -1.681E+01 3.927E+00
S6 -9.661E-02 3.589E-02 -6.898E-02 7.798E-02 -9.683E-02 2.716E-02 8.396E-02 -9.758E-02 3.358E-02
S7 -8.522E-02 -2.118E-01 1.040E+00 -2.655E+00 4.141E+00 -4.030E+00 2.340E+00 -6.993E-01 4.621E-02
S8 -1.028E-01 -6.461E-02 3.384E-01 -6.186E-01 6.809E-01 -4.433E-01 1.637E-01 -3.058E-02 1.778E-03
S9 -5.376E-02 -5.968E-02 6.335E-02 -5.129E-02 2.863E-02 -9.513E-03 1.827E-03 -1.901E-04 8.517E-06
S10 1.321E-02 -6.177E-02 3.988E-02 -1.777E-02 5.321E-03 -9.938E-04 9.890E-05 -1.600E-06 -7.206E-07
S11 -4.410E-02 3.827E-02 -1.615E-02 4.135E-03 -6.321E-04 5.356E-05 -1.040E-06 -3.504E-07 5.426E-08
S12 -1.179E-01 6.608E-02 -3.242E-02 1.107E-02 -2.472E-03 3.574E-04 -3.286E-05 1.815E-06 -5.106E-08
TABLE 17
Table 18 shows effective focal lengths f1 to f6 of the respective lenses in embodiment 6, a total effective focal length f of the optical imaging lens, a distance TTL on the optical axis from the object side surface S1 to the imaging surface S15 of the first lens E1, and a half of the diagonal length ImgH of the effective pixel region on the imaging surface S15.
f1(mm) 3.54 f6(mm) -3.88
f2(mm) -9.54 f(mm) 4.72
f3(mm) -4575.97 TTL(mm) 5.00
f4(mm) 41.10 ImgH(mm) 3.93
f5(mm) 19.14
TABLE 18
Fig. 12A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 6, which indicates a convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 12B shows an astigmatism curve of the optical imaging lens of embodiment 6, which represents meridional image plane curvature and sagittal image plane curvature. 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 magnification chromatic aberration curve of the optical imaging lens of embodiment 6, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 12A to 12D, the optical imaging lens provided in 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 shows a schematic configuration diagram of an optical imaging lens according to embodiment 7 of the present application.
As shown in fig. 13, an optical imaging lens according to an exemplary embodiment of the present application sequentially includes, along an optical axis from an object side to an image side: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, filter E7, and imaging plane S15.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has negative refractive power, wherein an object-side surface S7 thereof is concave, and an image-side surface S8 thereof is concave. The fifth lens element E5 has positive refractive power, wherein an object-side surface S9 thereof is convex, and an image-side surface S10 thereof is concave. The sixth lens element E6 has negative refractive power, wherein an object-side surface S11 thereof is concave, and an image-side surface S12 thereof is concave. The filter E7 has an object side surface S13 and an image side surface S14. Light from the object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.
Table 19 shows the surface types, the radii of curvature, the thicknesses, the materials, and the cone coefficients of the respective lenses of the optical imaging lens of example 7, in which the units of the radii of curvature and the thicknesses are millimeters (mm).
TABLE 19
In embodiment 7, the object side surface and the image side surface of any one of the first to sixth lenses E1 to E6 are aspherical surfaces.
Table 20 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 7, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
Face number A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 2.204E-04 1.683E-03 8.446E-03 -4.335E-02 9.555E-02 -1.139E-01 7.478E-02 -2.531E-02 3.148E-03
S2 -2.857E-02 1.387E-02 -6.447E-02 2.195E-01 -5.177E-01 7.454E-01 -6.384E-01 2.979E-01 -5.819E-02
S3 -4.074E-02 4.442E-02 1.251E-01 -4.604E-01 8.112E-01 -8.372E-01 4.940E-01 -1.418E-01 1.238E-02
S4 -3.430E-02 2.337E-01 -9.093E-01 3.410E+00 -8.103E+00 1.198E+01 -1.064E+01 5.187E+00 -1.050E+00
S5 -6.085E-02 -1.311E-01 1.005E+00 -4.159E+00 1.019E+01 -1.553E+01 1.442E+01 -7.487E+00 1.678E+00
S6 -5.224E-02 -5.068E-03 2.812E-02 -2.094E-01 5.002E-01 -7.429E-01 6.712E-01 -3.397E-01 7.487E-02
S7 -1.034E-01 -1.429E-01 5.611E-01 -1.116E+00 1.325E+00 -9.694E-01 4.156E-01 -8.934E-02 1.959E-03
S8 -1.130E-01 -6.393E-02 2.364E-01 -3.358E-01 2.868E-01 -1.422E-01 3.883E-02 -5.110E-03 1.870E-04
S9 -1.066E-02 -6.155E-02 5.388E-02 -4.584E-02 2.786E-02 -1.004E-02 2.046E-03 -2.170E-04 9.083E-06
S10 4.443E-02 -4.674E-02 1.341E-02 -1.931E-03 3.341E-05 7.719E-05 -2.410E-05 3.187E-06 -1.692E-07
S11 -7.604E-02 7.610E-02 -3.981E-02 1.197E-02 -2.160E-03 2.413E-04 -1.652E-05 6.418E-07 -1.071E-08
S12 -1.459E-01 9.431E-02 -4.745E-02 1.558E-02 -3.290E-03 4.436E-04 -3.714E-05 1.788E-06 -3.910E-08
Table 20
Table 21 shows effective focal lengths f1 to f6 of the respective lenses in embodiment 7, a total effective focal length f of the optical imaging lens, a distance TTL on the optical axis from the object side surface S1 to the imaging surface S15 of the first lens E1, and a half of the diagonal length ImgH of the effective pixel region on the imaging surface S15.
f1(mm) 3.97 f6(mm) -3.17
f2(mm) -10.71 f(mm) 4.56
f3(mm) 22.98 TTL(mm) 5.00
f4(mm) -71.20 ImgH(mm) 3.93
f5(mm) 9.15
Table 21
Fig. 14A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 7, which indicates a convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 14B shows an astigmatism curve of the optical imaging lens of embodiment 7, which represents meridional image plane curvature and sagittal image plane curvature. 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 magnification chromatic aberration curve of the optical imaging lens of embodiment 7, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 14A to 14D, the optical imaging lens provided in 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, an optical imaging lens according to an exemplary embodiment of the present application sequentially includes, along an optical axis from an object side to an image side: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, filter E7, and imaging plane S15.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has negative refractive power, wherein an object-side surface S7 thereof is concave and an image-side surface S8 thereof is convex. The fifth lens element E5 has positive refractive power, wherein an object-side surface S9 thereof is convex, and an image-side surface S10 thereof is concave. The sixth lens element E6 has negative refractive power, wherein an object-side surface S11 thereof is concave, and an image-side surface S12 thereof is concave. The filter E7 has an object side surface S13 and an image side surface S14. Light from the object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.
Table 22 shows the surface types, the radii of curvature, the thicknesses, the materials, and the cone coefficients of the respective lenses of the optical imaging lens of example 8, in which the units of the radii of curvature and the thicknesses are millimeters (mm).
Table 22
In embodiment 8, the object side surface and the image side surface of any one of the first to sixth lenses E1 to E6 are aspherical surfaces.
Table 23 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 8, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
Table 23
Table 24 shows effective focal lengths f1 to f6 of the respective lenses in embodiment 8, a total effective focal length f of the optical imaging lens, a distance TTL on the optical axis from the object side surface S1 to the imaging surface S15 of the first lens E1, and a half of the diagonal length ImgH of the effective pixel region on the imaging surface S15.
f1(mm) 3.97 f6(mm) -3.19
f2(mm) -10.97 f(mm) 4.56
f3(mm) 24.15 TTL(mm) 5.00
f4(mm) -80.92 ImgH(mm) 3.93
f5(mm) 9.42
Table 24
Fig. 16A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 8, which indicates a convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 16B shows an astigmatism curve of the optical imaging lens of embodiment 8, which represents meridional image plane curvature and sagittal image plane curvature. 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 magnification chromatic aberration curve of the optical imaging lens of embodiment 8, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 16A to 16D, the optical imaging lens provided in 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 shows a schematic configuration diagram of an optical imaging lens according to embodiment 9 of the present application.
As shown in fig. 17, an optical imaging lens according to an exemplary embodiment of the present application sequentially includes, along an optical axis from an object side to an image side: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, filter E7, and imaging plane S15.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is concave, and an image-side surface S4 thereof is concave. The third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has negative refractive power, wherein an object-side surface S7 thereof is concave, and an image-side surface S8 thereof is concave. The fifth lens element E5 has positive refractive power, wherein an object-side surface S9 thereof is convex, and an image-side surface S10 thereof is concave. The sixth lens element E6 has negative refractive power, wherein an object-side surface S11 thereof is concave, and an image-side surface S12 thereof is concave. The filter E7 has an object side surface S13 and an image side surface S14. Light from the object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.
Table 25 shows the surface types, the radii of curvature, the thicknesses, the materials, and the cone coefficients of the respective lenses of the optical imaging lens of example 9, in which the units of the radii of curvature and the thicknesses are millimeters (mm).
Table 25
In embodiment 9, the object side surface and the image side surface of any one of the first to sixth lenses E1 to E6 are aspherical surfaces.
Table 26 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 9, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
Face number A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 -1.895E-04 7.460E-03 -1.976E-02 3.352E-02 -2.928E-02 9.687E-03 1.676E-03 -1.594E-03 -9.583E-05
S2 -2.902E-02 1.326E-02 -6.673E-02 2.393E-01 -5.713E-01 8.224E-01 -7.005E-01 3.247E-01 -6.297E-02
S3 -4.335E-02 6.453E-02 3.038E-02 -1.904E-01 3.386E-01 -3.240E-01 1.564E-01 -1.847E-02 -6.851E-03
S4 -3.096E-02 1.903E-01 -6.188E-01 2.291E+00 -5.458E+00 8.087E+00 -7.166E+00 3.462E+00 -6.848E-01
S5 -6.730E-02 -6.165E-02 6.130E-01 -2.846E+00 7.461E+00 -1.196E+01 1.157E+01 -6.220E+00 1.437E+00
S6 -4.942E-02 -3.754E-02 1.901E-01 -6.710E-01 1.304E+00 -1.610E+00 1.238E+00 -5.452E-01 1.065E-01
S7 -1.103E-01 -1.235E-01 5.137E-01 -1.034E+00 1.231E+00 -9.020E-01 3.887E-01 -8.431E-02 1.611E-03
S8 -1.177E-01 -5.812E-02 2.403E-01 -3.546E-01 3.100E-01 -1.574E-01 4.446E-02 -6.170E-03 2.521E-04
S9 -1.770E-02 -5.535E-02 5.081E-02 -4.337E-02 2.604E-02 -9.287E-03 1.880E-03 -1.983E-04 8.284E-06
S10 3.474E-02 -4.228E-02 1.388E-02 -3.282E-03 6.813E-04 -8.610E-05 -3.817E-07 1.301E-06 -9.729E-08
S11 -7.879E-02 7.422E-02 -3.861E-02 1.165E-02 -2.112E-03 2.366E-04 -1.622E-05 6.295E-07 -1.045E-08
S12 -1.467E-01 9.723E-02 -4.867E-02 1.578E-02 -3.293E-03 4.393E-04 -3.645E-05 1.741E-06 -3.757E-08
Table 26
Table 27 shows effective focal lengths f1 to f6 of the respective lenses in embodiment 9, a total effective focal length f of the optical imaging lens, a distance TTL on the optical axis from the object side surface S1 to the imaging surface S15 of the first lens E1, and a half of the diagonal length ImgH of the effective pixel region on the imaging surface S15.
f1(mm) 3.97 f6(mm) -3.32
f2(mm) -10.52 f(mm) 4.56
f3(mm) 22.26 TTL(mm) 5.04
f4(mm) -62.27 ImgH(mm) 3.93
f5(mm) 9.38
Table 27
Fig. 18A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 9, which indicates a convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 18B shows an astigmatism curve of the optical imaging lens of embodiment 9, which represents meridional image plane curvature and sagittal image plane curvature. 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 magnification chromatic aberration curve of the optical imaging lens of embodiment 9, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 18A to 18D, the optical imaging lens provided in 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, an optical imaging lens according to an exemplary embodiment of the present application sequentially includes, along an optical axis from an object side to an image side: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, filter E7, and imaging plane S15.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is concave, and an image-side surface S4 thereof is concave. The third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has positive refractive power, wherein an object-side surface S7 thereof is concave and an image-side surface S8 thereof is convex. The fifth lens element E5 has positive refractive power, wherein an object-side surface S9 thereof is convex, and an image-side surface S10 thereof is concave. The sixth lens element E6 has negative refractive power, wherein an object-side surface S11 thereof is concave, and an image-side surface S12 thereof is concave. The filter E7 has an object side surface S13 and an image side surface S14. Light from the object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.
Table 28 shows the surface types, radii of curvature, thicknesses, materials, and cone coefficients of the respective lenses of the optical imaging lens of example 10, wherein the radii of curvature and thicknesses are each in millimeters (mm).
Table 28
In embodiment 10, the object side surface and the image side surface of any one of the first to sixth lenses E1 to E6 are aspherical surfaces.
Table 29 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 10, where each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
Face number A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 -1.259E-03 -9.794E-03 6.800E-02 -2.266E-01 4.168E-01 -4.534E-01 2.884E-01 -9.951E-02 1.412E-02
S2 -3.757E-02 1.836E-02 -1.093E-02 4.209E-02 -1.627E-01 2.767E-01 -2.573E-01 1.270E-01 -2.580E-02
S3 -3.844E-02 1.010E-01 6.980E-02 -3.708E-01 5.537E-01 -4.207E-01 1.406E-01 1.295E-02 -1.505E-02
S4 -3.920E-02 3.231E-01 -9.927E-01 3.013E+00 -5.747E+00 6.183E+00 -3.019E+00 -3.427E-02 4.302E-01
S5 -1.093E-01 -2.361E-01 2.195E+00 -9.785E+00 2.559E+01 -4.129E+01 4.032E+01 -2.189E+01 5.087E+00
S6 -9.569E-02 1.326E-02 4.738E-02 -3.121E-01 6.449E-01 -8.487E-01 7.258E-01 -3.654E-01 8.284E-02
S7 -1.048E-01 -1.819E-01 1.064E+00 -2.889E+00 4.658E+00 -4.622E+00 2.702E+00 -8.028E-01 5.396E-02
S8 -1.332E-01 3.569E-02 1.052E-01 -2.346E-01 2.744E-01 -1.807E-01 6.554E-02 -1.192E-02 7.245E-04
S9 -7.116E-02 -2.041E-02 1.204E-02 -6.130E-03 4.940E-03 -2.241E-03 5.440E-04 -7.134E-05 4.333E-06
S10 -1.648E-03 -4.278E-02 2.599E-02 -1.189E-02 3.875E-03 -8.034E-04 9.123E-05 -2.622E-06 -5.673E-07
S11 -8.417E-02 9.471E-02 -5.948E-02 2.109E-02 -4.388E-03 5.527E-04 -4.150E-05 1.673E-06 -1.555E-08
S12 -1.525E-01 1.159E-01 -7.160E-02 2.898E-02 -7.563E-03 1.273E-03 -1.335E-04 7.504E-06 -3.582E-08
Table 29
Table 30 shows effective focal lengths f1 to f6 of the respective lenses in embodiment 10, a total effective focal length f of the optical imaging lens, a distance TTL on the optical axis from an object side surface S1 to an imaging surface S15 of the first lens E1, and a half of a diagonal length ImgH of an effective pixel region on the imaging surface S15.
f1(mm) 3.52 f6(mm) -3.57
f2(mm) -8.56 f(mm) 4.70
f3(mm) 39.20 TTL(mm) 4.95
f4(mm) 89.70 ImgH(mm) 3.93
f5(mm) 17.81
Table 30
Fig. 20A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 10, which indicates the deviation of the converging focus after light rays of different wavelengths pass through the lens. Fig. 20B shows an astigmatism curve of the optical imaging lens of embodiment 10, which represents meridional image plane curvature and sagittal image plane curvature. 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 magnification chromatic aberration curve of the optical imaging lens of embodiment 10, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 20A to 20D, the optical imaging lens provided in 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 shows a schematic configuration diagram of an optical imaging lens according to embodiment 11 of the present application.
As shown in fig. 21, an optical imaging lens according to an exemplary embodiment of the present application sequentially includes, along an optical axis from an object side to an image side: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, filter E7, and imaging plane S15.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is concave, and an image-side surface S4 thereof is concave. The third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has negative refractive power, wherein an object-side surface S7 thereof is concave, and an image-side surface S8 thereof is concave. The fifth lens element E5 has positive refractive power, wherein an object-side surface S9 thereof is convex, and an image-side surface S10 thereof is concave. The sixth lens element E6 has negative refractive power, wherein an object-side surface S11 thereof is concave, and an image-side surface S12 thereof is concave. The filter E7 has an object side surface S13 and an image side surface S14. Light from the object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.
Table 31 shows the surface types, the radii of curvature, the thicknesses, the materials, and the cone coefficients of the respective lenses of the optical imaging lens of example 11, in which the units of the radii of curvature and the thicknesses are millimeters (mm).
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Table 31
In embodiment 11, the object side surface and the image side surface of any one of the first to sixth lenses E1 to E6 are aspherical surfaces.
Table 32 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 11, where each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
Face number A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 3.775E-04 -1.672E-02 8.987E-02 -2.617E-01 4.449E-01 -4.607E-01 2.844E-01 -9.652E-02 1.359E-02
S2 -3.428E-02 9.022E-03 -3.129E-02 1.650E-01 -4.586E-01 6.821E-01 -5.794E-01 2.649E-01 -5.044E-02
S3 -3.063E-02 9.393E-02 -6.970E-02 2.491E-01 -8.081E-01 1.363E+00 -1.260E+00 6.204E-01 -1.268E-01
S4 -1.823E-02 2.381E-01 -7.420E-01 2.476E+00 -5.181E+00 6.349E+00 -4.104E+00 9.969E-01 9.990E-02
S5 -8.883E-02 -2.108E-01 1.814E+00 -8.019E+00 2.079E+01 -3.323E+01 3.217E+01 -1.734E+01 4.015E+00
S6 -1.052E-01 1.486E-01 -4.771E-01 9.330E-01 -1.264E+00 1.033E+00 -4.276E-01 3.564E-02 2.188E-02
S7 -2.166E-01 1.432E-01 5.499E-01 -2.421E+00 4.418E+00 -4.504E+00 2.571E+00 -7.001E-01 2.010E-02
S8 -2.965E-01 4.500E-01 -5.864E-01 5.498E-01 -3.277E-01 1.221E-01 -2.811E-02 3.683E-03 -1.831E-04
S9 -1.823E-01 1.677E-01 -1.753E-01 1.089E-01 -4.043E-02 9.265E-03 -1.249E-03 8.070E-05 -4.004E-07
S10 -1.054E-01 1.091E-01 -8.997E-02 4.263E-02 -1.302E-02 2.644E-03 -3.429E-04 2.540E-05 -8.031E-07
S11 -4.256E-01 4.671E-01 -2.734E-01 9.358E-02 -1.967E-02 2.576E-03 -2.042E-04 9.051E-06 -2.325E-07
S12 -3.963E-01 3.438E-01 -1.869E-01 6.449E-02 -1.455E-02 2.158E-03 -2.053E-04 1.144E-05 -2.466E-07
Table 32
Table 33 shows effective focal lengths f1 to f6 of the respective lenses in embodiment 11, a total effective focal length f of the optical imaging lens, a distance TTL on the optical axis from the object side surface S1 to the imaging surface S15 of the first lens E1, and a half of the diagonal length ImgH of the effective pixel region on the imaging surface S15.
f1(mm) 3.55 f6(mm) -4.02
f2(mm) -9.39 f(mm) 4.70
f3(mm) 35.11 TTL(mm) 5.02
f4(mm) -26.69 ImgH(mm) 3.93
f5(mm) 11.54
Table 33
Fig. 22A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 11, which indicates a convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 22B shows an astigmatism curve of the optical imaging lens of embodiment 11, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 22C shows a distortion curve of the optical imaging lens of embodiment 11, which represents distortion magnitude values corresponding to different image heights. Fig. 22D shows a magnification chromatic aberration curve of the optical imaging lens of embodiment 11, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 22A to 22D, the optical imaging lens provided in embodiment 11 can achieve good imaging quality.
In summary, examples 1 to 11 satisfy the relationships shown in table 34, respectively.
Conditional\embodiment 1 2 3 4 5 6 7 8 9 10 11
TTL/ImgH 1.27 1.27 1.27 1.27 1.27 1.27 1.27 1.27 1.28 1.26 1.28
f/EPD 1.88 1.88 1.88 1.88 1.90 1.88 1.88 1.88 1.88 1.88 1.88
TTL/f 1.06 1.06 1.06 1.06 1.06 1.06 1.10 1.10 1.11 1.05 1.07
BFL/TTL 0.11 0.11 0.11 0.11 0.12 0.12 0.11 0.11 0.11 0.12 0.14
TTL*Fno/ImgH 2.40 2.40 2.40 2.40 2.41 2.40 2.39 2.39 2.41 2.37 2.41
|f6|/|f1| 1.07 1.05 1.09 1.05 0.98 1.10 0.80 0.80 0.84 1.01 1.13
f2/f -1.73 -1.70 -1.68 -1.60 -2.03 -2.02 -2.35 -2.41 -2.31 -1.82 -2.00
f234/f -2.60 -2.52 -2.64 -2.60 -2.99 -2.65 -3.39 -3.50 -3.27 -2.66 -1.80
f56/f -1.07 -1.10 -1.07 -1.08 -1.34 -1.14 -1.37 -1.36 -1.46 -1.06 -1.64
(R1+R2)/(R1-R2) -1.66 -1.67 -1.66 -1.67 -1.98 -1.71 -1.96 -1.96 -1.95 -1.67 -1.67
CT1/(T12+CT2+T23) 1.48 1.58 1.52 1.52 1.44 1.37 1.36 1.35 1.35 1.47 1.44
∑CT/∑T 1.43 1.40 1.42 1.42 1.12 1.33 1.19 1.19 1.18 1.37 1.50
(T45+CT5+C56)/TTL 0.35 0.36 0.35 0.35 0.38 0.36 0.40 0.40 0.40 0.36 0.33
SAG11/CT6 -3.33 -3.25 -3.33 -3.32 -3.49 -2.40 -5.21 -4.96 -5.27 -4.83 -4.07
SD12/SD4 3.21 3.18 3.20 3.14 3.22 3.58 3.49 3.44 3.50 3.11 3.04
SD1/SAG1 2.07 2.07 2.06 2.07 2.08 2.00 2.18 2.18 2.19 2.07 2.10
Watch 34
The application also provides an imaging device, wherein the electronic photosensitive element can be a photosensitive coupling element (CCD) or a complementary metal oxide semiconductor element (CMOS). The imaging device may be a stand alone imaging device such as a digital camera or an imaging module integrated on a mobile electronic device such as a cell phone. The imaging device is equipped with the optical imaging lens described above.
The above description is only illustrative of the preferred embodiments of the present application and of the principles of the technology employed. It will be appreciated by persons skilled in the art that the scope of the application referred to in the present application is not limited to the specific combinations of the technical features described above, but also covers other technical features formed by any combination of the technical features described above or their equivalents without departing from the inventive concept. Such as the above-mentioned features and the technical features disclosed in the present application (but not limited to) having similar functions are replaced with each other.

Claims (13)

1. The optical imaging lens is characterized by sequentially comprising, from an object side to an image side along an optical axis:
the first lens with positive focal power has a convex object side surface and a concave image side surface;
A second lens having negative optical power, the image side surface of which is concave;
the object side surface of the third lens is a convex surface, and the image side surface of the third lens is a concave surface;
A fourth lens with optical power, the object side surface of which is a concave surface;
A fifth lens element with positive refractive power having a convex object-side surface and a concave image-side surface;
a sixth lens element with negative refractive power having concave object-side and image-side surfaces; and
The number of lenses with focal power in the optical imaging lens is six;
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, the aperture value FNo of the optical imaging lens and 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 is more than or equal to 2.37 and less than or equal to FNo/ImgH is less than 2.5;
The combined focal length f234 of the second lens, the third lens and the fourth lens and the total effective focal length f of the optical imaging lens meet-3.5-234/f-1.8;
The combined focal length f56 of the fifth lens and the sixth lens and the total effective focal length f of the optical imaging lens satisfy-1.7 < f56/f < -1.
2. The optical imaging lens as claimed in claim 1, wherein a distance BFL between an image side surface of the sixth lens element and an imaging surface of the optical imaging lens element on the optical axis and a distance TTL between an object side surface of the first lens element and the imaging surface of the optical imaging lens element on the optical axis satisfy 0.11-BFL/TTL-0.14.
3. The optical imaging lens as claimed in claim 1, wherein a distance T45 between the fourth lens element and the fifth lens element on the optical axis, a center thickness CT5 of the fifth lens element on the optical axis, a distance T56 between the fifth lens element and the sixth lens element on the optical axis, and a distance TTL between an object side surface of the first lens element and an imaging surface of the optical imaging lens element on the optical axis satisfy 0.3 < (t45+ct5+t56)/TTL being equal to or less than 0.4.
4. The optical imaging lens according to claim 2, wherein a center thickness CT1 of the first lens on the optical axis, a separation distance T12 of the first lens and the second lens on the optical axis, a center thickness CT2 of the second lens on the optical axis, and a separation distance T23 of the second lens and the third lens on the optical axis satisfy 1.35+.ct1/(t12+ct2+t23) < 1.6.
5. The optical imaging lens according to claim 2, wherein a sum Σct of center thicknesses of the first lens to the sixth lens on the optical axis and a sum Σt of distances between any adjacent two lenses of the first lens to the sixth lens on the optical axis satisfy 1.1 < Σct/Σtbeing less than or equal to 1.5, respectively.
6. The optical imaging lens of claim 1, wherein an effective focal length f2 of the second lens and a total effective focal length f of the optical imaging lens satisfy-2.5 < f 2/f-1.6.
7. The optical imaging lens according to claim 1, wherein an effective focal length f1 of the first lens and an effective focal length f6 of the sixth lens satisfy 0.8+|f6|/|f1| < 1.2.
8. The optical imaging lens as claimed in claim 1, wherein a radius of curvature R1 of an object side surface of the first lens and a radius of curvature R2 of an image side surface of the first lens satisfy-2 < (r1+r2)/(R1-R2) < -1.6.
9. The optical imaging lens as claimed in claim 8, wherein an on-axis distance SAG1 from an intersection point of the maximum effective diameter SD1 of the object side surface of the first lens and the optical axis to an effective radius vertex of the object side surface of the first lens satisfies 2+.sd 1/SAG1 < 2.2.
10. The optical imaging lens as claimed in claim 1, wherein a maximum effective diameter SD12 of an image side of the sixth lens and a maximum effective diameter SD4 of an image side of the second lens satisfy 3 < SD12/SD4 < 3.6.
11. The optical imaging lens according to claim 10, wherein an on-axis distance SAG11 from an intersection point of an object side surface of the sixth lens and the optical axis to an apex of an effective radius of the object side surface of the sixth lens and a center thickness CT6 of the sixth lens on the optical axis satisfy-5.3 < SAG11/CT 6. Ltoreq.2.4.
12. The optical imaging lens as claimed in claim 1, wherein a distance TTL from an object side surface of the first lens to an 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 satisfy 1.26 +.ttl/ImgH < 1.4.
13. The optical imaging lens of claim 1, wherein a total effective focal length f of the optical imaging lens and an entrance pupil diameter EPD of the optical imaging lens satisfy 1.88 +.f/EPD < 1.90.
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