CN108490588B - Optical imaging lens - Google Patents

Optical imaging lens Download PDF

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Publication number
CN108490588B
CN108490588B CN201810574159.2A CN201810574159A CN108490588B CN 108490588 B CN108490588 B CN 108490588B CN 201810574159 A CN201810574159 A CN 201810574159A CN 108490588 B CN108490588 B CN 108490588B
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lens
optical imaging
optical
focal length
imaging lens
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CN108490588A (en
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高雪
李明
闻人建科
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Zhejiang Sunny Optics Co Ltd
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Zhejiang Sunny Optics Co Ltd
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Priority to CN201810574159.2A priority Critical patent/CN108490588B/en
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Priority to PCT/CN2019/076961 priority patent/WO2019233142A1/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

Abstract

The application discloses optical imaging lens, this camera lens includes along the optical axis from object side to image side in proper order: a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens. The first lens has optical power, the object side surface of the first lens is a convex surface, and the image side surface of the first lens is a concave surface; the second lens has positive optical power; the third lens has negative focal power; the fourth lens has optical power; the fifth lens has negative focal power, and the image side surface of the fifth lens is a concave surface; the sixth lens has optical power; and the distance TTL between the object side surface of the first lens and the imaging surface of the optical imaging lens on the optical axis and the total effective focal length f of the optical imaging lens meet the condition that TTL/f is smaller than 1.

Description

Optical imaging lens
Technical Field
The present application relates to an optical imaging lens, and more particularly, to a tele lens including six lenses.
Background
With the rapid development of portable electronic products such as smartphones and tablet computers, consumers have increasingly diversified demands for product-side photographing lenses. In addition to the characteristics of miniaturization, high pixels, high resolution, high relative brightness, and the like of an imaging lens, demands are also made for the focal length, resolution, miniaturization, and the like of the imaging lens.
Currently, in order to achieve an image with a high magnification and a good quality in the case of auto-focusing, a combination of a telephoto lens and a wide-angle lens is used. In the application of dual-shot lens, in order to better achieve the purpose of zooming and obtain an image with excellent quality, the long-focus lens has corresponding requirements on the aspects of long focal length, high resolution, high imaging quality and the like.
Disclosure of Invention
The present application provides an optical imaging lens, e.g., a tele lens, applicable to portable electronic products that may at least address or partially address at least one of the above-mentioned drawbacks of the prior art.
In one aspect, the present application provides an optical imaging lens, including, in order from an object side to an image side: a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens. The first lens has optical power, the object side surface of the first lens can be a convex surface, and the image side surface of the first lens can be a concave surface; the second lens may have positive optical power; the third lens may have negative optical power; the fourth lens has optical power; the fifth lens may have negative optical power, and an image side surface thereof may be concave; the sixth lens has 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 the total effective focal length f of the optical imaging lens can meet the condition that TTL/f is smaller than 1.
In one embodiment, the total effective focal length f of the optical imaging lens and the effective focal length f2 of the second lens may satisfy 2 < f/f2 < 3.
In one embodiment, the total effective focal length f of the optical imaging lens and the effective focal length f1 of the first lens may satisfy |f/f1| < 0.2.
In one embodiment, both the object side and the image side of the first lens may be spherical.
In one embodiment, the radius of curvature R1 of the object-side surface of the first lens and the radius of curvature R2 of the image-side surface of the first lens may satisfy 0.5 < R1/R2 < 1.5.
In one embodiment, the total effective focal length f of the optical imaging lens and the radius of curvature R3 of the object side surface of the second lens may satisfy 4 < f/R3 < 5.
In one embodiment, the total effective focal length f of the optical imaging lens and the combined focal length f12 of the first lens and the second lens may satisfy 2 < f/f12 < 3.
In one embodiment, the effective focal length f3 of the third lens and the radius of curvature R6 of the image side of the third lens may satisfy-2.5.ltoreq.f3/R6.ltoreq.1.5.
In one embodiment, the effective focal length f5 of the fifth lens and the radius of curvature R10 of the image side of the fifth lens may satisfy-2 < f5/R10 < -1.
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-2 < f56/f < -1.
In one embodiment, the distance T45 between the fourth lens element and the fifth lens element on the optical axis and the center thickness CT6 of the sixth lens element on the optical axis may satisfy 1 < T45/CT6 < 2.
In one embodiment, the center thickness CT2 of the second lens element and the center thickness CT4 of the fourth lens element may satisfy 2 < CT2/CT4 < 3.
In one embodiment, the central thickness CT1 of the first lens on the optical axis and the distance T12 between the first lens and the second lens on the optical axis may satisfy 2.3 < CT1/T12 < 3.8.
In one embodiment, the half of the effective pixel area diagonal length ImgH on the imaging surface of the optical imaging lens and the total effective focal length f of the optical imaging lens can satisfy ImgH/f < 0.5.
In another aspect, the present application provides an optical imaging lens, including, in order from an object side to an image side: a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens. The first lens has optical power, the object side surface of the first lens can be a convex surface, and the image side surface of the first lens can be a concave surface; the second lens may have positive optical power; the third lens may have negative optical power; the fourth lens has optical power; the fifth lens may have negative optical power, and an image side surface thereof may be concave; the sixth lens has optical power. The half of the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens and the total effective focal length f of the optical imaging lens can meet the requirement that ImgH/f is smaller than 0.5.
In still another aspect, the present application further provides an optical imaging lens, including, in order from an object side to an image side: a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens. The first lens has optical power, the object side surface of the first lens can be a convex surface, and the image side surface of the first lens can be a concave surface; the second lens may have positive optical power; the third lens may have negative optical power; the fourth lens has optical power; the fifth lens may have negative optical power, and an image side surface thereof may be concave; the sixth lens has optical power. The total effective focal length f of the optical imaging lens and the effective focal length f2 of the second lens can meet the requirement that f/f2 is smaller than 2 and smaller than 3.
In still another aspect, the present application further provides an optical imaging lens, including, in order from an object side to an image side: a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens. The first lens has optical power, the object side surface of the first lens can be a convex surface, and the image side surface of the first lens can be a concave surface; the second lens may have positive optical power; the third lens may have negative optical power; the fourth lens has optical power; the fifth lens may have negative optical power, and an image side surface thereof may be concave; the sixth lens has optical power. The effective focal length f3 of the third lens and the curvature radius R6 of the image side surface of the third lens can meet the condition that f3/R6 is less than or equal to-2.5 and less than or equal to-1.5.
In still another aspect, the present application further provides an optical imaging lens, including, in order from an object side to an image side: a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens. The first lens has optical power, the object side surface of the first lens can be a convex surface, and the image side surface of the first lens can be a concave surface; the second lens may have positive optical power; the third lens may have negative optical power; the fourth lens has optical power; the fifth lens may have negative optical power, and an image side surface thereof may be concave; the sixth lens has optical power. The total effective focal length f of the optical imaging lens and the curvature radius R3 of the object side surface of the second lens can meet the condition that f/R3 is more than 4 and less than 5.
In still another aspect, the present application further provides an optical imaging lens, including, in order from an object side to an image side: a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens. The first lens has optical power, the object side surface of the first lens can be a convex surface, and the image side surface of the first lens can be a concave surface; the second lens may have positive optical power; the third lens may have negative optical power; the fourth lens has optical power; the fifth lens may have negative optical power, and an image side surface thereof may be concave; the sixth lens has optical power. The total effective focal length f of the optical imaging lens and the combined focal length f12 of the first lens and the second lens can satisfy 2 < f/f12 < 3.
In still another aspect, the present application further provides an optical imaging lens, including, in order from an object side to an image side: a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens. The first lens has optical power, the object side surface of the first lens can be a convex surface, and the image side surface of the first lens can be a concave surface; the second lens may have positive optical power; the third lens may have negative optical power; the fourth lens has optical power; the fifth lens may have negative optical power, and an image side surface thereof may be concave; the sixth lens has optical power. The distance T45 between the fourth lens and the fifth lens on the optical axis and the center thickness CT6 of the sixth lens on the optical axis can satisfy 1 < T45/CT6 < 2.
In still another aspect, the present application further provides an optical imaging lens, including, in order from an object side to an image side: a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens. The first lens has optical power, the object side surface of the first lens can be a convex surface, and the image side surface of the first lens can be a concave surface; the second lens may have positive optical power; the third lens may have negative optical power; the fourth lens has optical power; the fifth lens may have negative optical power, and an image side surface thereof may be concave; the sixth lens has optical power. The center thickness CT2 of the second lens on the optical axis and the center thickness CT4 of the fourth lens on the optical axis can satisfy the condition that CT2/CT4 is more than 2 and less than 3.
The optical imaging lens has at least one beneficial effect of miniaturization, long focal length, high imaging quality and the like by reasonably distributing the focal power, the surface shape, the center thickness of each lens, the axial spacing between each lens and the like of the lenses.
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 shows a schematic structural view 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 structural 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 structural view 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 shows a schematic structural view 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 shows a schematic structural diagram 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 of the optical imaging lens of embodiment 9, respectively.
Detailed Description
For a better understanding of the present application, various aspects of the present application will be described in more detail with reference to the accompanying drawings. It should be understood that these detailed description are merely illustrative of exemplary embodiments of the application and are 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 near the object side is referred to as the object side of the lens, and the surface of each lens near the image side 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 present application, use of "may" means "one or more embodiments of the present application. Also, the term "exemplary" is intended to refer to an example or illustration.
Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the accompanying drawings in conjunction 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 an exemplary embodiment, the first lens has positive or negative optical power, and its object-side surface may be convex and the image-side surface may be concave; the second lens may have positive optical power; the third lens may have negative optical power; the fourth lens has positive focal power or negative focal power; the fifth lens may have negative optical power, and an image side surface thereof may be concave; the sixth lens has positive optical power or negative optical power.
In an exemplary embodiment, both the object side and the image side of the first lens may be spherical. The object side surface and the image side surface of the first lens are arranged to be spherical surfaces, so that the image quality of the optical system can be effectively balanced, and good processability of the optical system can be guaranteed.
In an exemplary embodiment, the object side surface of the second lens may be convex.
In an exemplary embodiment, the image side surface of the third lens may be concave.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy a condition of TTL/f < 1, 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 0.95 < TTL/f < 1, e.g., 0.96. Ltoreq.TTL/f. Ltoreq.0.98. The imaging lens has long focal length characteristics and meets the miniaturization requirement at the same time by controlling the on-axis distance from the object side surface of the first lens to the imaging surface and the total effective focal length of the optical imaging system.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the condition of 2 < f/f2 < 3, where f is the total effective focal length of the optical imaging lens and f2 is the effective focal length of the second lens. More specifically, f and f2 may further satisfy 2 < f/f2 < 2.5, for example, 2.10.ltoreq.f2.ltoreq.2.25. The ratio of the total effective focal length of the optical system to the effective focal length of the second lens is reasonably controlled, so that the focal power of the system can be effectively distributed, and chromatic aberration can be corrected.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression-2.5+.f3/R6+.1.5, where f3 is the effective focal length of the third lens and R6 is the radius of curvature of the image-side surface of the third lens. More specifically, f3 and R6 may further satisfy-2.19.ltoreq.f3/R6.ltoreq.1.50. The ratio of the effective focal length of the third lens to the curvature radius of the image side surface of the third lens is reasonably controlled, so that astigmatism and distortion of the optical system can be effectively reduced.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the condition that-2 < f5/R10 < -1 >, where f5 is an effective focal length of the fifth lens and R10 is a radius of curvature of an image side surface of the fifth lens. More specifically, f5 and R10 may further satisfy-1.84.ltoreq.f5/R10.ltoreq.1.27. The ratio of the effective focal length of the fifth lens to the curvature radius of the image side surface of the fifth lens is reasonably controlled, so that astigmatism and distortion of the optical system can be effectively reduced.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy a conditional expression ImgH/f < 0.5, where ImgH is half of the diagonal length of an effective pixel region on an imaging surface of the optical imaging lens, and f is the total effective focal length of the optical imaging lens. More specifically, imgH and f may further satisfy 0.4 < ImgH/f < 0.5, for example, 0.42. Ltoreq.ImgH/f. Ltoreq.0.45. The method meets the condition that ImgH/f is less than 0.5, can effectively compress the size of an optical system, and ensures the compact size characteristic of the lens.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 0.5 < R1/R2 < 1.5, 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 0.7 < R1/R2 < 1.2, for example, 0.76.ltoreq.R1/R2.ltoreq.1.09. The ratio of the object side surface curvature radius to the image side surface curvature radius of the first lens is reasonably controlled, so that the optical system can be better matched with the chief ray angle of the chip.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 4 < f/R3 < 5, where f is the total effective focal length of the optical imaging lens, and R3 is the radius of curvature of the object side surface of the second lens. More specifically, f and R3 may further satisfy 4 < f/R3 < 4.5, for example, 4.11.ltoreq.f/R3.ltoreq.4.27. The ratio of the total effective focal length of the optical system to the curvature radius of the object side surface of the second lens is reasonably controlled, so that the spherical aberration and astigmatism of the system can be effectively reduced.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the condition of 2 < f/f12 < 3, where f is the total effective focal length of the optical imaging lens, and f12 is the combined focal length of the first lens and the second lens. More specifically, f and f12 may further satisfy 2 < f/f12 < 2.5, for example, 2.05.ltoreq.f12.ltoreq.2.24. The ratio of the total effective focal length of the optical system to the combined focal length of the first lens and the second lens is reasonably distributed, so that the sensitivity of the system can be effectively improved.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the condition-2 < 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-1.79.ltoreq.f56/f.ltoreq.1.31. The ratio of the combined focal length of the fifth lens and the sixth lens to the total effective focal length of the optical system is reasonably distributed, so that the light deflection angle is reduced, the sensitivity of the optical system is reduced, and the image quality of the optical system is improved.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the condition that 1 < T45/CT6 < 2, where T45 is a distance between the fourth lens element and the fifth lens element on the optical axis, and CT6 is a center thickness of the sixth lens element on the optical axis. More specifically, T45 and CT6 may further satisfy 1.28.ltoreq.T45/CT 6.ltoreq.1.76. Satisfying the condition 1 < T45/CT6 < 2 can improve astigmatism and distortion of the optical system, and simultaneously reduce the rear end size of the optical system.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the condition of 2 < CT2/CT4 < 3, where CT2 is the center thickness of the second lens element on the optical axis, and CT4 is the center thickness of the fourth lens element on the optical axis. More specifically, CT2 and CT4 may further satisfy 2.25.ltoreq.CT2/CT 4.ltoreq.2.95. The center thickness of the second lens and the center thickness of the fourth lens are reasonably arranged, so that miniaturization of the lens can be ensured, light deflection tends to be relaxed, sensitivity of the system is reduced, and coma and astigmatism of the system are reduced.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression |f/f1| < 0.2, where f is the total effective focal length of the optical imaging lens and f1 is the effective focal length of the first lens. More specifically, f and f1 may further satisfy 0 < |f/f1| < 0.1, for example, 0.01.ltoreq.|f/f1|.ltoreq.0.08. The ratio of the total effective focal length of the optical system to the effective focal length of the first lens is reasonably controlled, so that the chromatic aberration of the optical system can be effectively balanced.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 2.3 < CT1/T12 < 3.8, where CT1 is the center thickness of the first lens on the optical axis, and T12 is the distance between the first lens and the second lens on the optical axis. More specifically, CT1 and T12 may further satisfy 2.39.ltoreq.CT1/T12.ltoreq.3.67. The ratio of the center thickness of the first lens to the air space between the first lens and the second lens on the optical axis is reasonably controlled, so that the front end size of the optical system can be effectively reduced, and the miniaturization of the optical system is ensured.
In an exemplary embodiment, the optical imaging lens may further include at least one diaphragm to improve the imaging quality of the lens. The diaphragm may be disposed at an arbitrary position as needed, for example, the diaphragm may be disposed between the first lens and the second 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 application provides a six-piece type long-focus lens, which can be matched with other known wide-angle lenses to form a double-shot lens, so that the purpose of zooming is achieved, an ideal magnification and an image with good quality are obtained under the condition of automatic focusing, and the six-piece type long-focus lens is suitable for shooting distant objects. Meanwhile, the focal length lens has the advantages that the focal length lens is effectively reduced in size, the sensitivity of the focal length lens is reduced, and the processability of the focal length lens is improved by reasonably distributing the focal power, the surface shape, the center thickness of each lens, the axial spacing between each lens and the like, so that the focal length lens is more beneficial to production and processing and is applicable to portable electronic products.
In the embodiments of the present application, aspherical mirror surfaces are often used for lenses having optical power other than the first lens. 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.
However, it will be appreciated by those skilled in the art that the number of lenses making up the optical imaging lens may be varied to achieve the various results and advantages described in the specification without departing from the technical solutions claimed herein. 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: a first lens E1, a stop STO, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an imaging surface 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 positive 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 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 negative refractive power, wherein an object-side surface S7 thereof is convex and an image-side surface S8 thereof is concave. The fifth lens element E5 has negative refractive power, wherein an object-side surface S9 thereof is concave, and an image-side surface S10 thereof is concave. The sixth lens element E6 has positive refractive power, wherein an object-side surface S11 thereof is convex, and an image-side surface S12 thereof is convex. 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).
Figure BDA0001686875280000111
TABLE 1
As can be seen from table 1, the object side surface S1 and the image side surface S2 of the first lens element E1 are spherical, and the object side surface and the image side surface of any one of the second lens element E2 to the sixth lens element E6 are aspherical. In the present embodiment, the surface shape x of each aspherical lens can be defined by, but not limited to, the following aspherical formula:
Figure BDA0001686875280000112
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. Table 2 below shows the higher order coefficients A that can be used for each of the aspherical mirrors S3-S12 in example 1 4 、A 6 、A 8 、A 10 、A 12 、A 14 、A 16 、A 18 And A 20 。
Face number A4 A6 A8 A10 A12 A14 A16 A18 A20
S3 9.2960E-03 -2.3620E-02 1.3802E-01 -3.9881E-01 7.0112E-01 -7.3634E-01 4.4024E-01 -1.2915E-01 1.1358E-02
S4 1.4872E-02 3.4942E-02 -5.7930E-02 2.4784E-02 1.9307E-01 -6.0821E-01 8.1732E-01 -5.5599E-01 1.5175E-01
S5 5.4930E-02 2.3013E-01 -4.1617E-01 1.2277E+00 -3.4314E+00 6.3596E+00 -7.1648E+00 4.3385E+00 -1.0800E+00
S6 -9.7150E-02 3.5634E-01 -1.3159E+00 9.1431E+00 -4.0121E+01 1.0753E+02 -1.7016E+02 1.4639E+02 -5.2885E+01
S7 -6.2510E-02 2.3524E-01 -5.2087E-01 2.0720E+00 -4.2372E+00 4.4413E+00 -1.9091E+00 0.0000E+00 0.0000E+00
S8 2.1800E-02 1.1097E-01 3.8131E-01 -2.6792E+00 9.7265E+00 -2.0053E+01 2.3760E+01 -1.5018E+01 3.8779E+00
S9 -1.9696E-01 1.0317E-01 -1.1586E-01 7.7671E-02 5.9499E-02 -1.4177E-01 9.9098E-02 -3.0790E-02 3.6110E-03
S10 -9.5280E-02 1.1284E-01 -1.1130E-01 4.7705E-02 -8.5000E-04 -7.8900E-03 3.2530E-03 -5.4000E-04 3.3900E-05
S11 -1.5383E-01 3.2892E-01 -3.6125E-01 2.3707E-01 -9.8740E-02 2.6372E-02 -4.3800E-03 4.1200E-04 -1.7000E-05
S12 -9.9310E-02 6.8535E-02 -3.1530E-02 8.7280E-03 -7.6000E-04 -2.7000E-04 8.9300E-05 -9.8000E-06 3.6800E-07
TABLE 2
Table 3 shows the effective focal lengths f1 to f6 of the respective lenses in embodiment 1, the total effective focal length f of the optical imaging lens, the distance TTL on the optical axis from the object side surface S1 to the imaging surface S15 of the first lens E1, and the maximum half field angle HFOV.
f1(mm) 1132.39 f6(mm) 8.11
f2(mm) 2.75 f(mm) 5.92
f3(mm) -4.35 TTL(mm) 5.70
f4(mm) -586.58 HFOV(°) 19.2
f5(mm) -4.07
TABLE 3 Table 3
The optical imaging lens in embodiment 1 satisfies:
TTL/f=0.96, where TTL is a distance between the object side surface S1 of the first lens E1 and the imaging surface S15 on the optical axis, and f is a total effective focal length of the optical imaging lens;
ff2=2.15, where f is the total effective focal length of the optical imaging lens and f2 is the effective focal length of the second lens E2;
f3/r6= -2.09, where f3 is the effective focal length of the third lens element E3, and R6 is the radius of curvature of the image-side surface S6 of the third lens element E3;
f5/r10= -1.44, where f5 is the effective focal length of the fifth lens element E5, and R10 is the radius of curvature of the image-side surface S10 of the fifth lens element E5;
ImgH/f=0.44, where ImgH is half the diagonal length of the effective pixel region on the imaging surface S15, and f is the total effective focal length of the optical imaging lens;
r1/r2=0.99, wherein R1 is a radius of curvature of the object-side surface S1 of the first lens element E1, and R2 is a radius of curvature of the image-side surface S2 of the first lens element E1;
fr3=4.25, where f is the total effective focal length of the optical imaging lens, and R3 is the radius of curvature of the object side surface S3 of the second lens E2;
ff12=2.14, where f is the total effective focal length of the optical imaging lens, and f12 is the combined focal length of the first lens E1 and the second lens E2;
f56/f= -1.60, where 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;
t45/ct6=1.57, where T45 is the distance between the fourth lens element E4 and the fifth lens element E5 on the optical axis, and CT6 is the center thickness of the sixth lens element E6 on the optical axis;
CT2/CT4 = 2.85, wherein CT2 is the center thickness of the second lens element E2 on the optical axis, and CT4 is the center thickness of the fourth lens element E4 on the optical axis;
i f/f1 i=0.01, where f is the total effective focal length of the optical imaging lens, and f1 is the effective focal length of the first lens E1;
CT 1/t12=3.64, where CT1 is the center thickness of the first lens E1 on the optical axis, and T12 is the distance between the first lens E1 and the second lens E2 on the optical axis.
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 at different angles of view. 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 structural diagram of an optical imaging lens according to embodiment 2 of the present application.
As shown in fig. 3, the optical imaging lens according to the exemplary embodiment of the present application sequentially includes, from an object side to an image side along an optical axis: a first lens E1, a stop STO, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an imaging surface 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 positive 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 negative refractive power, wherein an object-side surface S5 thereof is concave, 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 convex and an image-side surface S8 thereof is concave. The fifth lens element E5 has negative refractive power, wherein an object-side surface S9 thereof is concave, and an image-side surface S10 thereof is concave. The sixth lens element E6 has positive refractive power, wherein an object-side surface S11 thereof is convex, and an image-side surface S12 thereof is convex. 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).
Figure BDA0001686875280000141
TABLE 4 Table 4
As can be seen from table 4, in embodiment 2, the object side surface S1 and the image side surface S2 of the first lens element E1 are spherical surfaces, and the object side surface and the image side surface of any one of the second lens element E2 to the sixth lens element 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
S3 9.2963E-03 -2.3620E-02 1.3802E-01 -3.9881E-01 7.0112E-01 -7.3634E-01 4.4024E-01 -1.2915E-01 1.1358E-02
S4 1.4872E-02 3.4942E-02 -5.7930E-02 2.4784E-02 1.9307E-01 -6.0821E-01 8.1732E-01 -5.5599E-01 1.5175E-01
S5 -5.4927E-02 2.3013E-01 -4.1617E-01 1.2277E+00 -3.4314E+00 6.3596E+00 -7.1648E+00 4.3385E+00 -1.0800E+00
S6 -9.7155E-02 3.5634E-01 -1.3159E+00 9.1431E+00 -4.0121E+01 1.0753E+02 -1.7016E+02 1.4639E+02 -5.2885E+01
S7 -6.2510E-02 2.3524E-01 -5.2087E-01 2.0720E+00 -4.2372E+00 4.4413E+00 -1.9091E+00 0.0000E+00 0.0000E+00
S8 2.1800E-02 1.1097E-01 3.8131E-01 -2.6792E+00 9.7265E+00 -2.0053E+01 2.3760E+01 -1.5018E+01 3.8779E+00
S9 -1.9696E-01 1.0317E-01 -1.1586E-01 7.7671E-02 5.9499E-02 -1.4177E-01 9.9098E-02 -3.0790E-02 3.6110E-03
S10 -9.5279E-02 1.1284E-01 -1.1130E-01 4.7705E-02 -8.5000E-04 -7.8900E-03 3.2530E-03 -5.4000E-04 3.3900E-05
S11 -1.5383E-01 3.2892E-01 -3.6125E-01 2.3707E-01 -9.8740E-02 2.6372E-02 -4.3800E-03 4.1200E-04 -1.7000E-05
S12 -9.9314E-02 6.8535E-02 -3.1530E-02 8.7280E-03 -7.6000E-04 -2.7000E-04 8.9300E-05 -9.8000E-06 3.6800E-07
TABLE 5
Table 6 shows the effective focal lengths f1 to f6 of the respective lenses in embodiment 2, the total effective focal length f of the optical imaging lens, the distance TTL on the optical axis from the object side surface S1 to the imaging surface S15 of the first lens E1, and the maximum half field angle HFOV.
f1(mm) 567.27 f6(mm) 6.26
f2(mm) 2.63 f(mm) 5.89
f3(mm) -4.04 TTL(mm) 5.69
f4(mm) -66.01 HFOV(°) 19.1
f5(mm) -3.47
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 at different angles of view. 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 structural diagram of an optical imaging lens according to embodiment 3 of the present application.
As shown in fig. 5, the optical imaging lens according to the exemplary embodiment of the present application sequentially includes, from an object side to an image side along an optical axis: a first lens E1, a stop STO, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an imaging surface 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 positive 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 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 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 negative refractive power, wherein an object-side surface S9 thereof is concave, and an image-side surface S10 thereof is concave. The sixth lens element E6 has positive refractive power, wherein an object-side surface S11 thereof is convex, and an image-side surface S12 thereof is convex. 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).
Figure BDA0001686875280000161
Figure BDA0001686875280000171
TABLE 7
As can be seen from table 7, in embodiment 3, the object side surface S1 and the image side surface S2 of the first lens element E1 are spherical surfaces, and the object side surface and the image side surface of any one of the second lens element E2 to the sixth lens element 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
S3 9.2963E-03 -2.3620E-02 1.3802E-01 -3.9881E-01 7.0112E-01 -7.3634E-01 4.4024E-01 -1.2915E-01 1.1358E-02
S4 1.4872E-02 3.4942E-02 -5.7930E-02 2.4784E-02 1.9307E-01 -6.0821E-01 8.1732E-01 -5.5599E-01 1.5175E-01
S5 -5.4927E-02 2.3013E-01 -4.1617E-01 1.2277E+00 -3.4314E+00 6.3596E+00 -7.1648E+00 4.3385E+00 -1.0800E+00
S6 -9.7155E-02 3.5634E-01 -1.3159E+00 9.1431E+00 -4.0121E+01 1.0753E+02 -1.7016E+02 1.4639E+02 -5.2885E+01
S7 -6.2510E-02 2.3524E-01 -5.2087E-01 2.0720E+00 -4.2372E+00 4.4413E+00 -1.9091E+00 0.0000E+00 0.0000E+00
S8 2.1800E-02 1.1097E-01 3.8131E-01 -2.6792E+00 9.7265E+00 -2.0053E+01 2.3760E+01 -1.5018E+01 3.8779E+00
S9 -1.9696E-01 1.0317E-01 -1.1586E-01 7.7671E-02 5.9499E-02 -1.4177E-01 9.9098E-02 -3.0790E-02 3.6110E-03
S10 -9.5279E-02 1.1284E-01 -1.1130E-01 4.7705E-02 -8.5000E-04 -7.8900E-03 3.2530E-03 -5.4000E-04 3.3900E-05
S11 -1.5383E-01 3.2892E-01 -3.6125E-01 2.3707E-01 -9.8740E-02 2.6372E-02 -4.3800E-03 4.1200E-04 -1.7000E-05
S12 -9.9314E-02 6.8535E-02 -3.1530E-02 8.7280E-03 -7.6000E-04 -2.7000E-04 8.9300E-05 -9.8000E-06 3.6800E-07
TABLE 8
Table 9 shows the effective focal lengths f1 to f6 of the respective lenses in embodiment 3, the total effective focal length f of the optical imaging lens, the distance TTL on the optical axis from the object side surface S1 to the imaging surface S15 of the first lens E1, and the maximum half field angle HFOV.
f1(mm) 77.34 f6(mm) 7.13
f2(mm) 2.72 f(mm) 5.89
f3(mm) -4.21 TTL(mm) 5.70
f4(mm) -44.71 HFOV(°) 19.2
f5(mm) -3.76
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 at different angles of view. 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 structural diagram of an optical imaging lens according to embodiment 4 of the present application.
As shown in fig. 7, the optical imaging lens according to the exemplary embodiment of the present application sequentially includes, from an object side to an image side along an optical axis: a first lens E1, a stop STO, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an imaging surface 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 positive 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 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 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 negative refractive power, wherein an object-side surface S9 thereof is concave, and an image-side surface S10 thereof is concave. The sixth lens element E6 has positive refractive power, wherein an object-side surface S11 thereof is convex, and an image-side surface S12 thereof is convex. 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).
Figure BDA0001686875280000181
Figure BDA0001686875280000191
Table 10
As can be seen from table 10, in example 4, the object side surface S1 and the image side surface S2 of the first lens element E1 are spherical surfaces, and the object side surface and the image side surface of any one of the second lens element E2 to the sixth lens element 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
S3 9.2963E-03 -2.3624E-02 1.3802E-01 -3.9881E-01 7.0112E-01 -7.3634E-01 4.4024E-01 -1.2915E-01 1.1358E-02
S4 1.4872E-02 3.4942E-02 -5.7930E-02 2.4784E-02 1.9307E-01 -6.0821E-01 8.1732E-01 -5.5599E-01 1.5175E-01
S5 -5.4927E-02 2.3013E-01 -4.1617E-01 1.2277E+00 -3.4314E+00 6.3596E+00 -7.1648E+00 4.3385E+00 -1.0800E+00
S6 -9.7155E-02 3.5634E-01 -1.3159E+00 9.1431E+00 -4.0121E+01 1.0753E+02 -1.7016E+02 1.4639E+02 -5.2885E+01
S7 -6.2510E-02 2.3524E-01 -5.2087E-01 2.0720E+00 -4.2372E+00 4.4413E+00 -1.9091E+00 0.0000E+00 0.0000E+00
S8 2.1800E-02 1.1097E-01 3.8131E-01 -2.6792E+00 9.7265E+00 -2.0053E+01 2.3760E+01 -1.5018E+01 3.8779E+00
S9 -1.9696E-01 1.0317E-01 -1.1586E-01 7.7671E-02 5.9499E-02 -1.4177E-01 9.9098E-02 -3.0790E-02 3.6110E-03
S10 -9.5279E-02 1.1284E-01 -1.1130E-01 4.7705E-02 -8.5000E-04 -7.8900E-03 3.2530E-03 -5.4000E-04 3.3900E-05
S11 -1.5383E-01 3.2892E-01 -3.6125E-01 2.3707E-01 -9.8740E-02 2.6372E-02 -4.3800E-03 4.1200E-04 -1.7000E-05
S12 -9.9314E-02 6.8535E-02 -3.1530E-02 8.7280E-03 -7.6000E-04 -2.7000E-04 8.9300E-05 -9.8000E-06 3.6800E-07
TABLE 11
Table 12 shows the effective focal lengths f1 to f6 of the respective lenses in embodiment 4, the total effective focal length f of the optical imaging lens, the distance TTL on the optical axis from the object side surface S1 to the imaging surface S15 of the first lens E1, and the maximum half field angle HFOV.
Figure BDA0001686875280000192
Figure BDA0001686875280000201
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 at different angles of view. 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 structural diagram 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: a first lens E1, a stop STO, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an imaging surface 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 positive 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 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 negative refractive power, wherein an object-side surface S7 thereof is convex and an image-side surface S8 thereof is concave. The fifth lens element E5 has negative 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 positive refractive power, wherein an object-side surface S11 thereof is convex 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).
Figure BDA0001686875280000211
TABLE 13
As can be seen from table 13, in example 5, the object side surface S1 and the image side surface S2 of the first lens element E1 are spherical surfaces, and the object side surface and the image side surface of any one of the second lens element E2 to the sixth lens element 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
S3 9.2963E-03 -2.3624E-02 1.3802E-01 -3.9881E-01 7.0112E-01 -7.3634E-01 4.4024E-01 -1.2915E-01 1.1358E-02
S4 1.4872E-02 3.4942E-02 -5.7930E-02 2.4784E-02 1.9307E-01 -6.0821E-01 8.1732E-01 -5.5599E-01 1.5175E-01
S5 -5.4927E-02 2.3013E-01 -4.1617E-01 1.2277E+00 -3.4314E+00 6.3596E+00 -7.1648E+00 4.3385E+00 -1.0800E+00
S6 -9.7155E-02 3.5634E-01 -1.3159E+00 9.1431E+00 -4.0121E+01 1.0753E+02 -1.7016E+02 1.4639E+02 -5.2885E+01
S7 -6.2510E-02 2.3524E-01 -5.2087E-01 2.0720E+00 -4.2372E+00 4.4413E+00 -1.9091E+00 0.0000E+00 0.0000E+00
S8 2.1800E-02 1.1097E-01 3.8131E-01 -2.6792E+00 9.7265E+00 -2.0053E+01 2.3760E+01 -1.5018E+01 3.8779E+00
S9 -1.9696E-01 1.0317E-01 -1.1586E-01 7.7671E-02 5.9499E-02 -1.4177E-01 9.9098E-02 -3.0790E-02 3.6110E-03
S10 -9.5279E-02 1.1284E-01 -1.1130E-01 4.7705E-02 -8.5000E-04 -7.8900E-03 3.2530E-03 -5.4000E-04 3.3900E-05
S11 -1.5383E-01 3.2892E-01 -3.6125E-01 2.3707E-01 -9.8740E-02 2.6372E-02 -4.3800E-03 4.1200E-04 -1.7000E-05
S12 -9.9314E-02 6.8535E-02 -3.1530E-02 8.7280E-03 -7.6000E-04 -2.7000E-04 8.9300E-05 -9.8000E-06 3.6800E-07
TABLE 14
Table 15 shows the effective focal lengths f1 to f6 of the respective lenses in embodiment 5, the total effective focal length f of the optical imaging lens, the distance TTL from the center of the object side surface S1 of the first lens E1 to the imaging surface S15 on the optical axis, and the maximum half field angle HFOV.
f1(mm) 499.32 f6(mm) 6.90
f2(mm) 2.71 f(mm) 5.84
f3(mm) -4.43 TTL(mm) 5.70
f4(mm) -47.72 HFOV(°) 19.6
f5(mm) -3.59
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 at different angles 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: a first lens E1, a stop STO, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an imaging surface 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 positive 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 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 convex, and an image-side surface S8 thereof is concave. The fifth lens element E5 has negative refractive power, wherein an object-side surface S9 thereof is concave, and an image-side surface S10 thereof is concave. The sixth lens element E6 has positive refractive power, wherein an object-side surface S11 thereof is concave and an image-side surface S12 thereof is convex. 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).
Figure BDA0001686875280000231
Table 16
As can be seen from table 16, in example 6, the object side surface S1 and the image side surface S2 of the first lens element E1 are spherical surfaces, and the object side surface and the image side surface of any one of the second lens element E2 to the sixth lens element 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.
Figure BDA0001686875280000232
Figure BDA0001686875280000241
TABLE 17
Table 18 shows the effective focal lengths f1 to f6 of the respective lenses in embodiment 6, the total effective focal length f of the optical imaging lens, the distance TTL on the optical axis from the object side surface S1 to the imaging surface S15 of the first lens E1, and the maximum half field angle HFOV.
f1(mm) 547.87 f6(mm) 8.03
f2(mm) 2.76 f(mm) 5.91
f3(mm) -4.34 TTL(mm) 5.70
f4(mm) 1491.97 HFOV(°) 19.2
f5(mm) -4.20
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 at different angles of view. 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 structural diagram of an optical imaging lens according to embodiment 7 of the present application.
As shown in fig. 13, 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: a first lens E1, a stop STO, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an imaging surface 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 positive refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is convex. 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 negative refractive power, wherein an object-side surface S7 thereof is convex and an image-side surface S8 thereof is concave. The fifth lens element E5 has negative refractive power, wherein an object-side surface S9 thereof is concave, and an image-side surface S10 thereof is concave. The sixth lens element E6 has positive refractive power, wherein an object-side surface S11 thereof is convex, and an image-side surface S12 thereof is convex. 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).
Figure BDA0001686875280000251
TABLE 19
As can be seen from table 19, in example 7, the object side surface S1 and the image side surface S2 of the first lens element E1 are spherical surfaces, and the object side surface and the image side surface of any one of the second lens element E2 to the sixth lens element 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
S3 9.2963E-03 -2.3624E-02 1.3802E-01 -3.9881E-01 7.0112E-01 -7.3634E-01 4.4024E-01 -1.2915E-01 1.1358E-02
S4 1.4872E-02 3.4942E-02 -5.7930E-02 2.4784E-02 1.9307E-01 -6.0821E-01 8.1732E-01 -5.5599E-01 1.5175E-01
S5 -5.4927E-02 2.3013E-01 -4.1617E-01 1.2277E+00 -3.4314E+00 6.3596E+00 -7.1648E+00 4.3385E+00 -1.0800E+00
S6 -9.7155E-02 3.5634E-01 -1.3159E+00 9.1431E+00 -4.0121E+01 1.0753E+02 -1.7016E+02 1.4639E+02 -5.2885E+01
S7 -6.2510E-02 2.3524E-01 -5.2087E-01 2.0720E+00 -4.2372E+00 4.4413E+00 -1.9091E+00 0.0000E+00 0.0000E+00
S8 2.1800E-02 1.1097E-01 3.8131E-01 -2.6792E+00 9.7265E+00 -2.0053E+01 2.3760E+01 -1.5018E+01 3.8779E+00
S9 -1.9696E-01 1.0317E-01 -1.1586E-01 7.7671E-02 5.9499E-02 -1.4177E-01 9.9098E-02 -3.0790E-02 3.6110E-03
S10 -9.5279E-02 1.1284E-01 -1.1130E-01 4.7705E-02 -8.5000E-04 -7.8900E-03 3.2530E-03 -5.4000E-04 3.3900E-05
S11 -1.5383E-01 3.2892E-01 -3.6125E-01 2.3707E-01 -9.8740E-02 2.6372E-02 -4.3800E-03 4.1200E-04 -1.7000E-05
S12 -9.9314E-02 6.8535E-02 -3.1530E-02 8.7280E-03 -7.6000E-04 -2.7000E-04 8.9300E-05 -9.8000E-06 3.6800E-07
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 maximum half field angle HFOV.
f1(mm) 499.92 f6(mm) 6.46
f2(mm) 2.61 f(mm) 5.87
f3(mm) -4.02 TTL(mm) 5.70
f4(mm) -53.81 HFOV(°) 19.2
f5(mm) -3.55
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 in the case of different angles of view. 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, 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: a first lens E1, a stop STO, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an imaging surface S15.
The first lens element E1 has negative 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 positive 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 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 convex, and an image-side surface S8 thereof is concave. The fifth lens element E5 has negative refractive power, wherein an object-side surface S9 thereof is concave, and an image-side surface S10 thereof is concave. The sixth lens element E6 has positive refractive power, wherein an object-side surface S11 thereof is convex, and an image-side surface S12 thereof is convex. 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).
Figure BDA0001686875280000271
Table 22
As can be seen from table 22, in example 8, the object side surface S1 and the image side surface S2 of the first lens element E1 are spherical surfaces, and the object side surface and the image side surface of any one of the second lens element E2 to the sixth lens element 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.
Face number A4 A6 A8 A10 A12 A14 A16 A18 A20
S3 9.2963E-03 -2.3624E-02 1.3802E-01 -3.9881E-01 7.0112E-01 -7.3634E-01 4.4024E-01 -1.2915E-01 1.1358E-02
S4 1.4872E-02 3.4942E-02 -5.7930E-02 2.4784E-02 1.9307E-01 -6.0821E-01 8.1732E-01 -5.5599E-01 1.5175E-01
S5 -5.4927E-02 2.3013E-01 -4.1617E-01 1.2277E+00 -3.4314E+00 6.3596E+00 -7.1648E+00 4.3385E+00 -1.0800E+00
S6 -9.7155E-02 3.5634E-01 -1.3159E+00 9.1431E+00 -4.0121E+01 1.0753E+02 -1.7016E+02 1.4639E+02 -5.2885E+01
S7 -6.2510E-02 2.3524E-01 -5.2087E-01 2.0720E+00 -4.2372E+00 4.4413E+00 -1.9091E+00 0.0000E+00 0.0000E+00
S8 2.1800E-02 1.1097E-01 3.8131E-01 -2.6792E+00 9.7265E+00 -2.0053E+01 2.3760E+01 -1.5018E+01 3.8779E+00
S9 -1.9696E-01 1.0317E-01 -1.1586E-01 7.7671E-02 5.9499E-02 -1.4177E-01 9.9098E-02 -3.0790E-02 3.6110E-03
S10 -9.5279E-02 1.1284E-01 -1.1130E-01 4.7705E-02 -8.5000E-04 -7.8900E-03 3.2530E-03 -5.4000E-04 3.3900E-05
S11 -1.5383E-01 3.2892E-01 -3.6125E-01 2.3707E-01 -9.8740E-02 2.6372E-02 -4.3800E-03 4.1200E-04 -1.7000E-05
S12 -9.9314E-02 6.8535E-02 -3.1530E-02 8.7280E-03 -7.6000E-04 -2.7000E-04 8.9300E-05 -9.8000E-06 3.6800E-07
Table 23
Table 24 shows the effective focal lengths f1 to f6 of the respective lenses in embodiment 8, the total effective focal length f of the optical imaging lens, the distance TTL on the optical axis from the object side surface S1 to the imaging surface S15 of the first lens E1, and the maximum half field angle HFOV.
f1(mm) -893.11 f6(mm) 8.03
f2(mm) 2.73 f(mm) 5.91
f3(mm) -4.33 TTL(mm) 5.70
f4(mm) 626.94 HFOV(°) 19.3
f5(mm) -3.98
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 in the case of different angles of view. 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, 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: a first lens E1, a stop STO, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an imaging surface S15.
The first lens element E1 has negative 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 positive 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 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 convex, and an image-side surface S8 thereof is concave. The fifth lens element E5 has negative refractive power, wherein an object-side surface S9 thereof is concave, 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 convex. 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).
Figure BDA0001686875280000291
Figure BDA0001686875280000301
Table 25
As can be seen from table 25, in example 9, the object side surface S1 and the image side surface S2 of the first lens element E1 are spherical surfaces, and the object side surface and the image side surface of any one of the second lens element E2 to the sixth lens element 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
S3 9.2963E-03 -2.3624E-02 1.3802E-01 -3.9881E-01 7.0112E-01 -7.3634E-01 4.4024E-01 -1.2915E-01 1.1358E-02
S4 1.4872E-02 3.4942E-02 -5.7930E-02 2.4784E-02 1.9307E-01 -6.0821E-01 8.1732E-01 -5.5599E-01 1.5175E-01
S5 -5.4927E-02 2.3013E-01 -4.1617E-01 1.2277E+00 -3.4314E+00 6.3596E+00 -7.1648E+00 4.3385E+00 -1.0800E+00
S6 -9.7155E-02 3.5634E-01 -1.3159E+00 9.1431E+00 -4.0121E+01 1.0753E+02 -1.7016E+02 1.4639E+02 -5.2885E+01
S7 -6.2510E-02 2.3524E-01 -5.2087E-01 2.0720E+00 -4.2372E+00 4.4413E+00 -1.9091E+00 0.0000E+00 0.0000E+00
S8 2.1800E-02 1.1097E-01 3.8131E-01 -2.6792E+00 9.7265E+00 -2.0053E+01 2.3760E+01 -1.5018E+01 3.8779E+00
S9 -1.9696E-01 1.0317E-01 -1.1586E-01 7.7671E-02 5.9499E-02 -1.4177E-01 9.9098E-02 -3.0790E-02 3.6110E-03
S10 -9.5279E-02 1.1284E-01 -1.1130E-01 4.7705E-02 -8.5000E-04 -7.8900E-03 3.2530E-03 -5.4000E-04 3.3900E-05
S11 -1.5383E-01 3.2892E-01 -3.6125E-01 2.3707E-01 -9.8740E-02 2.6372E-02 -4.3800E-03 4.1200E-04 -1.7000E-05
S12 -9.9314E-02 6.8535E-02 -3.1530E-02 8.7280E-03 -7.6000E-04 -2.7000E-04 8.9300E-05 -9.8000E-06 3.6800E-07
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 maximum half field angle HFOV.
f1(mm) -244.27 f6(mm) -1000.32
f2(mm) 2.79 f(mm) 5.87
f3(mm) -4.60 TTL(mm) 5.67
f4(mm) 134.19 HFOV(°) 19.2
f5(mm) -7.55
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 in the case of different angles of view. 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.
In summary, examples 1 to 9 each satisfy the relationship shown in table 28.
Conditional\embodiment 1 2 3 4 5 6 7 8 9
TTL/f 0.96 0.97 0.97 0.97 0.98 0.96 0.97 0.96 0.97
f/f2 2.15 2.24 2.16 2.18 2.15 2.14 2.25 2.16 2.10
f3/R6 -2.09 -1.50 -1.89 -1.88 -2.01 -2.19 -1.65 -2.04 -2.11
f5/R10 -1.44 -1.48 -1.60 -1.58 -1.84 -1.27 -1.53 -1.38 -1.58
ImgH/f 0.44 0.42 0.43 0.42 0.45 0.44 0.45 0.44 0.45
R1/R2 0.99 0.98 0.76 0.77 0.97 0.98 0.97 1.03 1.09
f/R3 4.25 4.12 4.13 4.13 4.19 4.27 4.11 4.23 4.18
f/f12 2.14 2.23 2.22 2.23 2.14 2.13 2.24 2.13 2.05
f56/f -1.60 -1.53 -1.49 -1.48 -1.33 -1.79 -1.53 -1.55 -1.31
T45/CT6 1.57 1.56 1.54 1.57 1.28 1.76 1.53 1.55 1.62
CT2/CT4 2.85 2.88 2.48 2.44 2.85 2.64 2.95 2.82 2.25
|f/f1| 0.01 0.01 0.08 0.07 0.01 0.01 0.01 0.01 0.02
CT1/T12 3.64 2.75 2.68 2.70 2.58 3.67 2.39 3.41 3.21
Table 28
The present application also provides an imaging device, the electron-sensitive element of which may 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 foregoing description is only of the preferred embodiments of the present application and is presented as a description of the principles of the technology being utilized. It will be appreciated by persons skilled in the art that the scope of the invention referred to in this application is not limited to the specific combinations of features described above, but it is intended to cover other embodiments in which any combination of features described above or equivalents thereof is possible without departing from the spirit of the invention. Such as the above-described features and technical features having similar functions (but not limited to) disclosed in the present application are replaced with each other.

Claims (37)

1. The optical imaging lens sequentially comprises, from an object side to an image side along an optical axis: a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens, characterized in that,
The first lens has optical power, the object side surface of the first lens is a convex surface, and the image side surface of the first lens is a concave surface;
the second lens has positive optical power;
the third lens has negative focal power;
the fourth lens has optical power;
the fifth lens has negative focal power, and the image side surface of the fifth lens is a concave surface;
the sixth lens has optical power; and
the distance TTL between the object side surface of the first lens and the imaging surface of the optical imaging lens on the optical axis and the total effective focal length f of the optical imaging lens meet the condition that TTL/f is smaller than 1;
the central thickness CT2 of the second lens on the optical axis and the central thickness CT4 of the fourth lens on the optical axis meet the conditions of 2 < CT2/CT4 < 3;
the number of lenses having optical power in the optical imaging lens is six.
2. The optical imaging lens of claim 1, wherein the total effective focal length f of the optical imaging lens and the effective focal length f2 of the second lens satisfy 2 < f/f2 < 3.
3. The optical imaging lens of claim 1, wherein the total effective focal length f of the optical imaging lens and the effective focal length f1 of the first lens satisfy |f/f1| < 0.2.
4. The optical imaging lens of claim 1, wherein the object side surface and the image side surface of the first lens are spherical.
5. The optical imaging lens of claim 4, 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 0.5 < R1/R2 < 1.5.
6. The optical imaging lens as claimed in claim 1, wherein the total effective focal length f of the optical imaging lens and the radius of curvature R3 of the object side surface of the second lens satisfy 4 < f/R3 < 5.
7. The optical imaging lens of any of claims 1 to 6, wherein a total effective focal length f of the optical imaging lens and a combined focal length f12 of the first lens and the second lens satisfy 2 < f/f12 < 3.
8. The optical imaging lens as claimed in claim 1, wherein an effective focal length f3 of the third lens and a radius of curvature R6 of an image side surface of the third lens satisfy-2.5.ltoreq.f3/r6.ltoreq.1.5.
9. The optical imaging lens as claimed in claim 1, wherein an effective focal length f5 of the fifth lens and a radius of curvature R10 of an image side surface of the fifth lens satisfy-2 < f5/R10 < -1.
10. The optical imaging lens according to claim 1 or 9, wherein a combined focal length f56 of the fifth lens and the sixth lens and a total effective focal length f of the optical imaging lens satisfy-2 < f56/f < -1.
11. The optical imaging lens as claimed in claim 1, wherein a separation distance T45 between the fourth lens element and the fifth lens element on the optical axis and a center thickness CT6 of the sixth lens element on the optical axis satisfy 1 < T45/CT6 < 2.
12. The optical imaging lens as claimed in claim 1, wherein a center thickness CT1 of the first lens on the optical axis and a separation distance T12 of the first lens and the second lens on the optical axis satisfy 2.3 < CT1/T12 < 3.8.
13. The optical imaging lens according to any one of claims 11 to 12, wherein half of the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens ImgH and the total effective focal length f of the optical imaging lens satisfy ImgH/f < 0.5.
14. The optical imaging lens sequentially comprises, from an object side to an image side along an optical axis: a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens, characterized in that,
the first lens has optical power, the object side surface of the first lens is a convex surface, and the image side surface of the first lens is a concave surface;
the second lens has positive optical power;
the third lens has negative focal power;
The fourth lens has optical power;
the fifth lens has negative focal power, and the image side surface of the fifth lens is a concave surface;
the sixth lens has optical power; and
half of the diagonal length of an effective pixel area on an imaging surface of the optical imaging lens and the total effective focal length f of the optical imaging lens meet the requirement that ImgH/f is smaller than 0.5;
the central thickness CT2 of the second lens on the optical axis and the central thickness CT4 of the fourth lens on the optical axis meet the conditions of 2 < CT2/CT4 < 3;
the number of lenses having optical power in the optical imaging lens is six.
15. The optical imaging lens of claim 14, 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 0.5 < R1/R2 < 1.5.
16. The optical imaging lens of claim 15, wherein the total effective focal length f of the optical imaging lens and the effective focal length f1 of the first lens satisfy |f/f1| < 0.2.
17. The optical imaging lens of claim 15, wherein the object side surface and the image side surface of the first lens are spherical.
18. The optical imaging lens of claim 14, wherein the total effective focal length f of the optical imaging lens and the effective focal length f2 of the second lens satisfy 2 < f/f2 < 3.
19. The optical imaging lens of claim 14, wherein the total effective focal length f of the optical imaging lens and the radius of curvature R3 of the object side of the second lens satisfy 4 < f/R3 < 5.
20. The optical imaging lens as claimed in claim 14, wherein an effective focal length f3 of the third lens and a radius of curvature R6 of an image side surface of the third lens satisfy-2.5.ltoreq.f3/r6.ltoreq.1.5.
21. The optical imaging lens of claim 14, wherein an effective focal length f5 of the fifth lens and a radius of curvature R10 of an image side surface of the fifth lens satisfy-2 < f5/R10 < -1.
22. The optical imaging lens of any of claims 14 to 21, wherein a total effective focal length f of the optical imaging lens and a combined focal length f12 of the first lens and the second lens satisfy 2 < f/f12 < 3.
23. The optical imaging lens of claim 22, wherein a combined focal length f56 of the fifth lens and the sixth lens and a total effective focal length f of the optical imaging lens satisfy-2 < f56/f < -1.
24. The optical imaging lens of any of claims 14 to 21, wherein a distance TTL on an optical axis from an object side surface of the first lens to an imaging surface of the optical imaging lens and a total effective focal length f of the optical imaging lens satisfy TTL/f < 1.
25. The optical imaging lens as claimed in claim 14, wherein a separation distance T45 between the fourth lens element and the fifth lens element on the optical axis and a center thickness CT6 of the sixth lens element on the optical axis satisfy 1 < T45/CT6 < 2.
26. The optical imaging lens of claim 14, wherein a center thickness CT1 of the first lens on the optical axis and a separation distance T12 of the first lens and the second lens on the optical axis satisfy 2.3 < CT1/T12 < 3.8.
27. The optical imaging lens sequentially comprises, from an object side to an image side along an optical axis: a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens, characterized in that,
the first lens has optical power, the object side surface of the first lens is a convex surface, and the image side surface of the first lens is a concave surface;
the second lens has positive optical power;
the third lens has negative focal power;
the fourth lens has optical power;
the fifth lens has negative focal power, and the image side surface of the fifth lens is a concave surface;
the sixth lens has optical power; and
the total effective focal length f of the optical imaging lens and the effective focal length f2 of the second lens meet the conditions of 2 < f/f2 < 3;
The central thickness CT2 of the second lens on the optical axis and the central thickness CT4 of the fourth lens on the optical axis meet the conditions of 2 < CT2/CT4 < 3;
the number of lenses having optical power in the optical imaging lens is six.
28. The optical imaging lens of claim 27, wherein the total effective focal length f of the optical imaging lens and the effective focal length f1 of the first lens satisfy |f/f1| < 0.2.
29. The optical imaging lens of claim 28, wherein the object-side surface and the image-side surface of the first lens are spherical.
30. The optical imaging lens of claim 29, 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 0.5 < R1/R2 < 1.5.
31. The optical imaging lens of claim 27, wherein the total effective focal length f of the optical imaging lens and the radius of curvature R3 of the object side of the second lens satisfy 4 < f/R3 < 5.
32. The optical imaging lens of claim 27, wherein the total effective focal length f of the optical imaging lens and the combined focal length f12 of the first lens and the second lens satisfy 2 < f/f12 < 3.
33. The optical imaging lens of claim 27, wherein an effective focal length f3 of the third lens and a radius of curvature R6 of an image side surface of the third lens satisfy-2.5+.f3/r6+.1.5.
34. The optical imaging lens of claim 27, wherein an effective focal length f5 of the fifth lens and a radius of curvature R10 of an image side surface of the fifth lens satisfy-2 < f5/R10 < -1.
35. The optical imaging lens of claim 27, wherein a combined focal length f56 of the fifth lens and the sixth lens and a total effective focal length f of the optical imaging lens satisfy-2 < f56/f < -1.
36. The optical imaging lens of any of claims 27 to 35, wherein a separation distance T45 of the fourth lens and the fifth lens on the optical axis and a center thickness CT6 of the sixth lens on the optical axis satisfy 1 < T45/CT6 < 2.
37. The optical imaging lens of any of claims 27 to 35, wherein a center thickness CT1 of the first lens on the optical axis and a separation distance T12 of the first lens and the second lens on the optical axis satisfy 2.3 < CT1/T12 < 3.8.
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