CN116203699A - Optical lens and electronic device - Google Patents

Optical lens and electronic device Download PDF

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Publication number
CN116203699A
CN116203699A CN202111450377.3A CN202111450377A CN116203699A CN 116203699 A CN116203699 A CN 116203699A CN 202111450377 A CN202111450377 A CN 202111450377A CN 116203699 A CN116203699 A CN 116203699A
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Prior art keywords
lens
optical
convex
concave
optical power
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姚烨
王东方
金嘉俊
姚波
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Ningbo Sunny Automotive Optech Co Ltd
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Ningbo Sunny Automotive Optech Co Ltd
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Priority to CN202111450377.3A priority Critical patent/CN116203699A/en
Publication of CN116203699A publication Critical patent/CN116203699A/en
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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
    • G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
    • G02B13/002—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
    • G02B13/0045—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface having five or more lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/06—Panoramic objectives; So-called "sky lenses" including panoramic objectives having reflecting surfaces
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/18—Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration

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

The application discloses an optical lens and electronic equipment comprising the same. The optical lens sequentially comprises from a first side to a second side along an optical axis: a first lens with negative focal power, wherein a first side surface of the first lens is a convex surface, and a second side surface of the first lens is a concave surface; a second lens having negative optical power, the second side of which is concave; a third lens with positive focal power, wherein the first side surface of the third lens is a convex surface, and the second side surface of the third lens is a convex surface; a fourth lens having positive optical power, the first side of which is convex; a fifth lens having optical power; a sixth lens having optical power; and a seventh lens with positive focal power, wherein the first side surface is a convex surface, and the second side surface is a convex surface.

Description

Optical lens and electronic device
Technical Field
The present disclosure relates to the field of optical elements, and more particularly, to an optical lens and an electronic device.
Background
At present, the application of the optical lens on the automobile is more and more extensive, and the vehicle manufacturers mostly adopt a hidden mounting mode for the purpose of attractive appearance and convenient mounting, so that the market has higher requirements on the small caliber and the miniaturization of the vehicle-mounted lens.
With the rising of all-around cameras, driving assistance systems and unmanned markets, vehicle-mounted lenses are increasingly applied to automobile driving assistance systems, and the vehicle-mounted lenses are required to cooperate with the development of chips, so that the vehicle-mounted lenses have millions of definition. Meanwhile, the vehicle-mounted lens not only needs to realize high-definition imaging, but also needs to realize low distortion of the full-picture image so as to adapt to a follow-up electronic image correction algorithm to obtain a low-distortion image with better visual experience effect. The current lens in the market cannot meet the requirements of small caliber, miniaturization and high resolution at the front end. Particularly, the lens on the current market cannot meet the requirements of intelligent driving of weak ghost images, the ghost images can generate misjudgment of an automatic driving auxiliary system on real road conditions, and life of personnel in a vehicle can be endangered when the misjudgment is serious, so that the vehicle-mounted lens also needs to meet the requirements of the weak ghost images.
In addition, since the vehicle lens is in a working environment with a large temperature difference, the vehicle lens should have good thermal stability to reduce the influence of temperature on imaging performance. However, in order to achieve the effects of low cost and portability, the current lens in the market has poor thermal stability, and the generated images are not clear under the high and low temperature conditions, so that the resolution is difficult to meet the requirements even after the temperature is restored to the normal temperature from the high and low temperature conditions.
In a word, in 3C electronic product and car field of making a video recording, the consumer has put forward higher requirement to the formation of image quality and the volume size of making a video recording the module.
Disclosure of Invention
The application provides an optical lens, this optical lens includes in order along the optical axis from first side to second side: a first lens with negative focal power, wherein a first side surface of the first lens is a convex surface, and a second side surface of the first lens is a concave surface; a second lens having negative optical power, the second side of which is concave; a third lens with positive focal power, wherein the first side surface of the third lens is a convex surface, and the second side surface of the third lens is a convex surface; a fourth lens having positive optical power, the first side of which is convex; a fifth lens having optical power; a sixth lens having optical power; and a seventh lens with positive focal power, wherein the first side surface is a convex surface, and the second side surface is a convex surface. In one embodiment, the first side of the first lens is convex.
In one embodiment, the first side of the second lens is convex.
In one embodiment, the first side of the second lens is concave.
In one embodiment, the second side of the fourth lens is convex.
In one embodiment, the second side of the fourth lens is concave.
In one embodiment, the fifth lens has positive optical power, the first side of which is convex, and the second side of which is convex.
In one embodiment, the fifth lens has negative optical power, the first side of which is concave, and the second side of which is concave.
In one embodiment, the sixth lens has negative optical power, the first side of which is concave and the second side of which is concave.
In one embodiment, the sixth lens has a negative optical power, the first side of which is concave and the second side of which is convex.
In one embodiment, the sixth lens has positive optical power, the first side of which is convex, and the second side of which is convex.
In one embodiment, the radius of curvature r7 of the first side of the fourth lens and the center thickness d7 of the fourth lens satisfy: r7/d7 is more than or equal to 0 and less than or equal to 100.
In one embodiment, the total effective focal length F of the optical lens, the radius of curvature r7 of the first side of the fourth lens, and the radius of curvature r8 of the second side of the fourth lens satisfy: the ratio of F/r7 to F/r8 is less than or equal to 0.20 and less than or equal to 1.0.
In one embodiment, the fifth lens and the sixth lens are cemented to form a cemented lens, and the sagittal height SAG (11) of the cemented surface between the fifth lens and the sixth lens and the center thickness d11 of the sixth lens satisfy: -3.ltoreq.arctan (SAG (11)/d 11). Ltoreq.0.5.
In one embodiment, the focal length F56 of the cemented lens group consisting of the fifth lens and the sixth lens and the total effective focal length F of the optical lens satisfy: F56/F65.
In one embodiment, the maximum field angle FOV of the optical lens, the maximum light passing aperture D of the first side surface of the first lens corresponding to the maximum field angle of the optical lens, and the image height H corresponding to the maximum field angle of the optical lens satisfy: D/H/FOV is not more than 180 DEG and not more than 9.
In one embodiment, the maximum light passing half diameter D7 of the first side surface of the fourth lens corresponding to the maximum field angle of the optical lens, the radius of curvature r7 of the first side surface of the fourth lens, and the sagittal height SAG (7) of the first side surface of the fourth lens satisfy: 0.ltoreq.arctan (D7/(r 7-SAG (7))).ltoreq.0.8.
In one embodiment, the lens refractive index Nd1 of the first lens satisfies: nd1 is more than or equal to 1.6.
In one embodiment, the total effective focal length F of the optical lens and the focal length F3 of the third lens satisfy: F3/F is more than or equal to 1 and less than or equal to 10.
In one embodiment, the optical lens further includes a stop disposed between the fourth lens and the fifth lens, and the optical total length TTL of the optical lens, the center thickness d7 of the fourth lens, the spacing distance d8 between the fourth lens and the stop, the spacing distance d9 between the stop and the fifth lens, the center thickness d10 of the fifth lens, and the center thickness d11 of the sixth lens satisfy: (d7+d8+d9+d10+d11)/TTL is less than or equal to 1.
In one embodiment, the maximum light passing half diameter D22 of the second side surface of the second lens corresponding to the maximum field angle of the optical lens and the sagittal height SAG (4) of the second side surface of the second lens satisfy: SAG (4)/D22 is more than or equal to 0.4 and less than or equal to 1.5.
In one embodiment, the optical total length TTL of the optical lens and the optical back focal length BFL of the optical lens satisfy: BFL/TTL is not less than 0.01.
In one embodiment, the edge opening angle θ1 at the maximum field angle of the first side of the second lens and the center opening angle θ2 of the first side of the second lens satisfy: -50 DEG is less than or equal to theta 1-theta 2 is less than or equal to-5 deg.
In one embodiment, the radius of curvature r5 of the first side of the third lens and the center thickness d5 of the third lens: r5/d5 is more than or equal to 0.01.
In one embodiment, the focal length F7 of the seventh lens and the total effective focal length F of the optical lens satisfy: F7/F is less than or equal to 3.9.
In one embodiment, the center thickness d3 of the second lens and the air gap d4 between the second lens and the third lens satisfy: d3/d4 is more than or equal to 0.15 and less than or equal to 0.75.
In one embodiment, the radius of curvature r5 of the first side of the third lens and the total effective focal length F of the optical lens satisfy: r5/F is more than or equal to 3 and less than or equal to 10.
In one embodiment, the optical lens further includes a stop disposed between the fourth lens and the fifth lens, and the interval d8 between the fourth lens and the stop and the interval d9 between the stop and the fifth lens satisfy: the (d8+d9)/TTL is more than or equal to 0.01 and less than or equal to 0.1.
In one embodiment, the center thickness d1 of the first lens, the center thickness d3 of the second lens, and the total optical length TTL of the optical lens satisfy: the (d1+d3)/TTL is more than or equal to 0.01 and less than or equal to 0.3.
In one embodiment, the aperture of the first side of the second lens is
Figure BDA0003385665860000031
Time sagittal height->
Figure BDA0003385665860000032
The caliber of the first side surface of the second lens is +.>
Figure BDA0003385665860000033
Time sagittal height->
Figure BDA0003385665860000034
The method meets the following conditions: />
Figure BDA0003385665860000035
And->
Figure BDA0003385665860000036
Figure BDA0003385665860000037
Figure BDA0003385665860000038
Another aspect of the present application provides an optical lens. The optical lens sequentially comprises from a first side to a second side along an optical axis: a first lens having negative optical power; a second lens having negative optical power; a third lens having positive optical power; a fourth lens having positive optical power; a fifth lens having optical power; a sixth lens having optical power; a seventh lens having positive optical power; the total effective focal length F of the optical lens, the radius of curvature r7 of the first side surface of the fourth lens, and the radius of curvature r8 of the second side surface of the fourth lens satisfy: the ratio of F/r7 to F/r8 is less than or equal to 0.20 and less than or equal to 1.0.
In one embodiment, the first side of the first lens is convex and the second side is concave.
In one embodiment, the first side of the second lens is convex and the second side is concave.
In one embodiment, the first side of the second lens is concave and the second side is concave.
In one embodiment, the first side of the third lens is convex and the second side is convex.
In one embodiment, the first side of the fourth lens is convex and the second side is convex.
In one embodiment, the first side of the fourth lens is convex and the second side is concave.
In one embodiment, the fifth lens has positive optical power, the first side of which is convex, and the second side of which is convex.
In one embodiment, the fifth lens has negative optical power, the first side of which is concave, and the second side of which is concave.
In one embodiment, the sixth lens has negative optical power, the first side of which is concave and the second side of which is concave.
In one embodiment, the sixth lens has a negative optical power, the first side of which is concave and the second side of which is convex.
In one embodiment, the sixth lens has positive optical power, the first side of which is convex, and the second side of which is convex.
In one embodiment, the first side of the seventh lens is convex and the second side is convex.
In one embodiment, the radius of curvature r7 of the first side of the fourth lens and the center thickness d7 of the fourth lens satisfy: r7/d7 is more than or equal to 0 and less than or equal to 100.
In one embodiment, the fifth lens and the sixth lens are cemented to form a cemented lens, and the sagittal height SAG (11) of the cemented surface between the fifth lens and the sixth lens and the center thickness d11 of the sixth lens satisfy: -3.ltoreq.arctan (SAG (11)/d 11). Ltoreq.0.5.
In one embodiment, the focal length F56 of the cemented lens group consisting of the fifth lens and the sixth lens and the total effective focal length F of the optical lens satisfy: F56/F65.
In one embodiment, the maximum field angle FOV of the optical lens, the maximum light passing aperture D of the first side surface of the first lens corresponding to the maximum field angle of the optical lens, and the image height H corresponding to the maximum field angle of the optical lens satisfy: D/H/FOV is not more than 180 DEG and not more than 9.
In one embodiment, the maximum light passing half diameter D7 of the first side surface of the fourth lens corresponding to the maximum field angle of the optical lens, the radius of curvature r7 of the first side surface of the fourth lens, and the sagittal height SAG (7) of the first side surface of the fourth lens satisfy: 0.ltoreq.arctan (D7/(r 7-SAG (7))).ltoreq.0.8.
In one embodiment, the lens refractive index Nd1 of the first lens satisfies: nd1 is more than or equal to 1.6.
In one embodiment, the total effective focal length F of the optical lens and the focal length F3 of the third lens satisfy: F3/F is more than or equal to 1 and less than or equal to 10.
In one embodiment, the optical lens further includes a stop disposed between the fourth lens and the fifth lens, and the optical total length TTL of the optical lens, the center thickness d7 of the fourth lens, the spacing distance d8 between the fourth lens and the stop, the spacing distance d9 between the stop and the fifth lens, the center thickness d10 of the fifth lens, and the center thickness d11 of the sixth lens satisfy: (d7+d8+d9+d10+d11)/TTL is less than or equal to 1.
In one embodiment, the maximum light passing half diameter D22 of the second side surface of the second lens corresponding to the maximum field angle of the optical lens and the sagittal height SAG (4) of the second side surface of the second lens satisfy: SAG (4)/D22 is more than or equal to 0.4 and less than or equal to 1.5.
In one embodiment, the optical total length TTL of the optical lens and the optical back focal length BFL of the optical lens satisfy: BFL/TTL is not less than 0.01.
In one embodiment, the edge opening angle θ1 at the maximum field angle of the first side of the second lens and the center opening angle θ2 of the first side of the second lens satisfy: -50 DEG is less than or equal to theta 1-theta 2 is less than or equal to-5 deg.
In one embodiment, the radius of curvature r5 of the first side of the third lens and the center thickness d5 of the third lens: r5/d5 is more than or equal to 0.01.
In one embodiment, the focal length F7 of the seventh lens and the total effective focal length F of the optical lens satisfy: F7/F is less than or equal to 3.9.
In one embodiment, the center thickness d3 of the second lens and the air gap d4 between the second lens and the third lens satisfy: d3/d4 is more than or equal to 0.15 and less than or equal to 0.75.
In one embodiment, the radius of curvature r5 of the first side of the third lens and the total effective focal length F of the optical lens satisfy: r5/F is more than or equal to 3 and less than or equal to 10.
In one embodiment, the optical lens further includes a stop disposed between the fourth lens and the fifth lens, and the interval d8 between the fourth lens and the stop and the interval d9 between the stop and the fifth lens satisfy: the (d8+d9)/TTL is more than or equal to 0.01 and less than or equal to 0.1.
In one embodiment, the center thickness d1 of the first lens, the center thickness d3 of the second lens, and the total optical length TTL of the optical lens satisfy: the (d1+d3)/TTL is more than or equal to 0.01 and less than or equal to 0.3.
In one embodiment, the aperture of the first side of the second lens is
Figure BDA0003385665860000051
Time sagittal height->
Figure BDA0003385665860000052
The caliber of the first side surface of the second lens is +.>
Figure BDA0003385665860000053
Time sagittal height->
Figure BDA0003385665860000054
The method meets the following conditions: />
Figure BDA0003385665860000055
And->
Figure BDA0003385665860000056
Figure BDA0003385665860000057
Figure BDA0003385665860000058
Another aspect of the present application provides an electronic device. The electronic device comprises the optical lens provided by the application and an imaging element for converting an optical image formed by the optical lens into an electric signal.
The seven lenses are adopted, and the shape, the focal power and the like of each lens are optimally arranged, so that the optical lens has at least one beneficial effect of miniaturization, small caliber, high resolution, large field angle, long back focus, weak ghost image, good temperature performance, low assemblage sensitivity and the like.
Drawings
Other features, objects, and advantages of the present application will become more apparent from the following detailed description of the embodiments, taken in conjunction with the accompanying drawings. In the drawings:
fig. 1 is a schematic diagram showing the structure of an optical lens according to embodiment 1 of the present application;
fig. 2 is a schematic diagram showing the structure of an optical lens according to embodiment 2 of the present application;
fig. 3 is a schematic diagram showing the structure of an optical lens according to embodiment 3 of the present application;
fig. 4 is a schematic diagram showing the structure of an optical lens according to embodiment 4 of the present application;
fig. 5 is a schematic view showing the structure of an optical lens according to embodiment 5 of the present application;
fig. 6 is a schematic diagram showing the structure of an optical lens according to embodiment 6 of the present application;
fig. 7 is a schematic view showing the structure of an optical lens according to embodiment 7 of the present application;
fig. 8 is a schematic diagram showing the structure of an optical lens according to embodiment 8 of the present application;
fig. 9 is a schematic diagram showing the structure of an optical lens according to embodiment 9 of the present application;
fig. 10 is a schematic diagram showing the structure of an optical lens according to embodiment 10 of the present application;
fig. 11 is a schematic diagram showing the structure of an optical lens according to embodiment 11 of the present application; and
fig. 12 is a schematic diagram showing the structure of an optical lens according to embodiment 12 of the present application.
Detailed Description
In order to facilitate an understanding of the present application, a more complete description of the present application will now be provided with reference to the relevant figures. 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 closest to the first side is referred to as the first side of the lens, the surface of each lens closest to the second side is referred to as the second side of the lens, and the surface of the optical lens closest to the second side is referred to as the second side of the optical lens. Illustratively, the first side may be an object side and the second side may be an image side; alternatively, the first side may be the imaging side and the second side may be the image source side.
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.
In an exemplary embodiment, the optical lens includes, for example, seven lenses having optical power, i.e., a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens. The seven lenses are arranged in sequence along the optical axis from the first side to the second side.
In an exemplary embodiment, the optical lens provided in the present application may be used as, for example, a vehicle lens, where the first side of the optical lens may be an object side and the second side may be an image side. Light from the object may be imaged at the image side. The second side of the optical lens is an imaging surface of the optical lens.
In an exemplary embodiment, the optical lens provided in the present application may be used as, for example, a projection lens or a laser radar transmitting lens, where the second side of the optical lens may be an image source side and the first side may be an imaging side. Light from the image source side can be imaged on the imaging side. The second side surface of the optical lens is an image source surface of the optical lens.
In an exemplary embodiment, the optical lens may further include a photosensitive element disposed at the second side. Alternatively, the photosensitive element disposed on the second side may be a photosensitive coupling element (CCD) or a complementary metal oxide semiconductor element (CMOS).
In an exemplary embodiment, the first lens may have negative optical power, and the first lens may have a convex-concave shape. The focal power and the surface shape of the first lens are arranged, so that the light of the first side surface can be prevented from being excessively divergent, the caliber of the rear lens can be controlled, and the miniaturized design is realized. Preferably, the first lens can use a material with high refractive index and high hardness, which is beneficial to reducing the front end diameter, and can also select an aspherical lens to further improve the resolution quality. The first side is designed to be convex, so that the sliding of water drops is facilitated in the actual use environment such as rainy and snowy weather, and the influence on imaging is reduced. Preferably, the first lens may be designed in a meniscus shape, which is advantageous for collecting light rays of a large field of view into the rear optical system, and for increasing the luminous flux of the optical lens.
In an exemplary embodiment, the second lens may have negative optical power. The second lens may have a convex-concave shape. The second lens is an aspheric surface, the focal power is negative, when the first side surface of the second lens is reversely curved, the central light and the edge light of each view field are dispersed, the aperture of the diaphragm is enlarged, the illuminance of the system is increased, and meanwhile, the correction of aberration of the edge light and the central light is facilitated to realize high resolution. The first side of the second lens is convex, so that emergent light rays passing through the first lens are almost perpendicularly incident to the first side of the second lens, the light rays are gentle and excessive, the light energy loss can be reduced, and the illumination of a peripheral view field is facilitated. When the first side surface of the second lens is reversely curved, the central part is convex, and the edge part is concave, so that the edge light enters the second lens to be obviously turned, the trend of the large-angle light is changed, the large-angle light can be collected in a limited space, and the front end caliber of the first lens can be reduced under the same angle of view. When the first side surface of the second lens is curved, the method has a great effect on reducing ghost images generated by reflection of the light rays with a large field of view on the edge of the second side surface of the first lens and the edge of the first side surface of the second lens.
In an exemplary embodiment, the second lens may have negative optical power. The second lens may have a biconcave shape. The second lens is an aspheric surface, the focal power is negative, when the first side surface of the second lens is free of inflection, the central light and the edge light of each view field are dispersed, the aperture of the diaphragm is enlarged, the illuminance of the system is increased, and meanwhile, the correction of aberration of the edge light and the central light is facilitated to realize high resolution. The first side of the second lens is a concave surface, so that the optical path difference between the marginal view field light and the central view field light can be rapidly accumulated, the aberration of the marginal view field is corrected, and the resolution is improved.
In an exemplary embodiment, the third lens may have positive optical power. The third lens may have a biconvex shape. The focal power of the third lens is positive, the surface type of the third lens is biconvex, the shape of the third lens is gentle, and the focal power and the surface type of the third lens are arranged, so that the influence of larger temperature change on the focal length of the third lens is smaller, and the whole optical system is favorable for keeping stable performance in a larger temperature change range. The first side of the third lens is a convex surface, and the second lens with negative focal power is matched, so that light can smoothly enter the rear lens, and the resolution is improved.
In an exemplary embodiment, the fourth lens may have positive optical power. The fourth lens may have a biconvex shape.
The fourth lens is an aspheric surface, the fourth lens has positive focal power and gentle lens shape, divergent light smoothly enters the rear lens after converging, further the light trend is stably transited, small aberration is easily obtained, and high resolution is realized. The second side of the fourth lens is convex, and the marginal view field light rays are deflected upwards on the second side of the fourth lens, so that the rear end caliber of the optical system is reduced.
In an exemplary embodiment, the fourth lens may have positive optical power. The fourth lens may have a convex-concave shape.
The fourth lens is an aspheric surface, the fourth lens has positive focal power and the lens shape is gentle, so that light almost perpendicularly enters the second side face of the fourth lens, the light is excessively gentle, aberration is small, high resolution is realized, and the resolving power of the optical system is improved. The bending direction of the first side surface of the fourth lens is consistent with the bending direction of the second side surface of the fifth lens, so that the physical distance between the fourth lens and the fifth lens can be effectively reduced, and the miniaturization is realized by reducing the total length of the system.
In an exemplary embodiment, the fifth lens may have positive optical power. The fifth lens may have a biconvex shape.
The fifth lens is an aspheric surface, the fifth lens has positive focal power and gentle lens shape, the focal power and the surface shape of the fifth lens are arranged, the converging effect is achieved on light rays, meanwhile, the light rays can be converged on the second side face more stably, astigmatism and field curvature of imaging can be improved, and the resolving power of an optical system is improved. The fifth lens is biconvex and the lens shape is gentle, so that divergent light can smoothly enter the rear lens after converging, and further the light trend is smoothly transited.
In an exemplary embodiment, the fifth lens may have negative optical power. The fifth lens may have a biconcave shape. The fifth lens is an aspheric surface, has negative focal power, the lens shape tends to be flat, and the focal power and the surface type of the fifth lens are favorable for smooth transition of the optical path difference between the marginal view field and the central view field. The fifth lens is a biconcave negative focal power lens, the first side surface is a concave surface, so that the light rays enter the lens and are obviously turned, the marginal light rays of each view field are obviously distinguished from the central light rays, the trend of the marginal light rays is changed, aberration correction of the center and the marginal light rays of each view field is facilitated, and high resolution is facilitated.
In an exemplary embodiment, the sixth lens may have negative optical power. The sixth lens may have a biconcave shape. The sixth lens is aspheric, the focal power is negative, and the focal power and the surface type of the sixth lens are favorable for collecting light entering through the fifth lens and smoothing the front light trend. The first side and the second side of the sixth lens are both concave surfaces, and the light rays of the edge view field have larger optical paths than the light rays of the center view field through the sixth lens, so that the light rays of the edge view field are more concentrated when reaching the second side, the aberration of the edge view field is corrected, and high resolution is realized.
In an exemplary embodiment, the sixth lens may have negative optical power. The sixth lens may have a concave-convex type. The sixth lens is an aspherical lens concave to the meniscus shape of the first side, and the focal power and the surface shape of the sixth lens are favorable for collecting light entering through the fifth lens, and the negative focal power of the sixth lens is favorable for properly diffusing the light and enabling the trend of the light to be in smooth transition. The first side surface of the sixth lens is concave and the second side surface of the sixth lens is convex, so that when light reaches the second side surface, the light is almost perpendicularly incident, the deflection of the light is small, the light energy loss is small, and the sensitivity of the lens is reduced.
In an exemplary embodiment, the sixth lens may have positive optical power. The sixth lens may have a biconvex shape. The sixth lens is aspheric, the focal power is positive, and the focal power and the surface form of the sixth lens are arranged, so that light rays are in a converging trend from front to back through the sixth lens, the upward trend of the light rays is slowed down, light energy loss caused by overlarge angles of light rays with a chip main ray when the light rays with a large view field reach the second side surface is avoided, and the illumination of the edge view field is improved.
In an exemplary embodiment, the seventh lens may have positive optical power. The seventh lens may have a biconvex shape. The seventh lens is an aspheric surface, the focal power is positive, the lens shape is gentle, the focal power and the surface shape of the seventh lens are arranged, so that divergent light smoothly enters the rear, further the light trend is smoothly transited, the imaging astigmatism and field curvature can be improved, and the resolving power of the optical system is improved.
In an exemplary embodiment, a stop for limiting the light beam may be provided between the fourth lens and the fifth lens to further improve the imaging quality of the optical lens. The aperture is arranged between the fourth lens and the fifth lens, which is beneficial to increasing aperture of the aperture; the optical system lens aperture is reduced, and the assembly sensitivity of the system can be reduced. In the embodiment of the present application, the diaphragm may be disposed in the vicinity of the first side of the fifth lens. It should be noted, however, that the locations of the diaphragms disclosed herein are merely examples and not limiting; in alternative embodiments, the diaphragm may be arranged in other positions as desired.
In an exemplary embodiment, an optical lens according to the present application may satisfy: 0.ltoreq.r7/d7.ltoreq.100, where r7 is the radius of curvature of the first side of the fourth lens and d7 is the center thickness of the fourth lens. More specifically, r7 and d7 may further satisfy: r7/d7 is more than or equal to 1.5 and less than or equal to 80. Satisfies 0.ltoreq.r7/d7.ltoreq.100, the more the first side surface of the fourth lens is curved, the aberration is corrected favorably, when the ratio of the radius of curvature of the first side surface of the fourth lens to the center thickness is within the control range interval, the imaging device can assist light rays to be smooth in trend, particularly light rays with edge view fields, can correct aberration better, and improves imaging quality to achieve high resolution.
In an exemplary embodiment, an optical lens according to the present application may satisfy: 0.20 +|F/r7 +|F/r8|1.0, where F is the total effective focal length of the optical lens, r7 is the radius of curvature of the first side of the fourth lens, and r8 is the radius of curvature of the second side of the fourth lens. More specifically, F, r and r8 further satisfy: the ratio of F/r7 to F/r8 is less than or equal to 0.3 and less than or equal to 0.7. Satisfies 0.20 and is less than or equal to |F/r7|+|F/r8|andis less than or equal to 1.0, is favorable to reasonably controlling the curvature radius of the fourth lens, can assist incident light to enter the optical system lens group, enables light of the edge view field to be more converged on the second side, and effectively corrects astigmatism so as to improve imaging quality.
In an exemplary embodiment, an optical lens according to the present application may satisfy: more specifically, SAG (11) and d11 further satisfy that-2 is less than or equal to (arctan (SAG (11))/d 11 is less than or equal to 0.2, satisfy that-3 is less than or equal to (arctan (11)/d 11) is less than or equal to 0.5, and are beneficial to controlling the opening angle and the center thickness of the bonding surface, can effectively restrict the light ray trend entering through the diaphragm, thereby being beneficial to improving the light transmission capability and the resolution capability of the whole optical system, and simultaneously can effectively reduce the requirement on the bonding process of the bonding surface.
In an exemplary embodiment, an optical lens according to the present application may satisfy: F56/F65, wherein F56 is the focal length of the cemented lens group consisting of the fifth lens and the sixth lens, and F is the total effective focal length of the optical lens. More specifically, F56 and F further satisfy: 6.5-60% F56/F. Satisfies 5 < F56/F < 65 >, is favorable to controlling the light ray trend between the fourth lens and the seventh lens, reduces the aberration caused by the large-angle light ray entering through the fourth lens, simultaneously makes the lens compact in structure, and is favorable to miniaturization. And meanwhile, the focal length of the bonding surface is reasonably distributed, so that more light rays can smoothly enter the bonding surface, and the illuminance is improved.
In an exemplary embodiment, an optical lens according to the present application may satisfy: D/H/FOV is not more than 180 degrees and is not more than 9, wherein D is the maximum light passing caliber of the first side face of the first lens corresponding to the maximum field angle of the optical lens, FOV is the maximum field angle of the optical lens, and H is the image height corresponding to the maximum field angle of the optical lens. More specifically, D, FOV and H further satisfy: D/H/FOV is not more than 180 DEG and not more than 5.4. The requirement of D/H/FOV multiplied by 180 degrees is less than or equal to 9, which is beneficial to reducing the caliber of the front end and enlarging the angle of view, namely, the miniaturization and the large angle of view can be simultaneously achieved.
In an exemplary embodiment, an optical lens according to the present application may satisfy: 0.ltoreq.arctan (D7/(r 7-SAG (7))). Ltoreq.0.8, wherein D7 is the maximum light passing half-diameter of the first side of the fourth lens corresponding to the maximum field angle of the optical lens, r7 is the radius of curvature of the first side of the fourth lens, SAG (7) is the sagittal height of the first side of the fourth lens. More specifically, D7, r7 and SAG (7) may further satisfy: 0.1.ltoreq.arctan (D7/(r 7-SAG (7))).ltoreq.0.6. Satisfies 0.ltoreq.arctan (D7/(r 7-SAG (7))).ltoreq.0.8, is favorable for reasonably controlling the opening angle of the first side face of the fourth lens within the conditional range, is favorable for changing the reflection paths of the first side face of the fourth lens and the chip protection glass, changes the optical path, is favorable for more divergence of light when the second side face of the fourth lens converges, and weakens ghost images.
In an exemplary embodiment, an optical lens according to the present application may satisfy: nd1 is less than or equal to 1.6, wherein Nd1 is the refractive index of the lens of the first lens. More specifically, nd1 may further satisfy: nd1 is more than or equal to 1.7. Satisfies Nd1 of 1.6, and the first lens is preferably made of high refractive index material, which is favorable for reducing the caliber of the front end and improving the imaging quality.
In an exemplary embodiment, an optical lens according to the present application may satisfy: F3/F is less than or equal to 1 and less than or equal to 10, wherein F is the total effective focal length of the optical lens, and F3 is the focal length of the third lens. More specifically, F and F3 may further satisfy: F3/F is less than or equal to 2 and less than or equal to 8. The requirement that F3/F is less than or equal to 1 and less than or equal to 10 is met, the third lens is preferably a glass lens, the reasonable distribution of focal length is facilitated, the focal length of the third lens is kept stable in a larger temperature range, the temperature performance is good, and the performance of the whole optical lens is kept stable when the temperature changes.
In an exemplary embodiment, an optical lens according to the present application may satisfy: (d7+d8+d9+d10+d11)/TTL is less than or equal to 1, wherein TTL is the optical total length of the optical lens, d7 is the center thickness of the fourth lens, d8 is the spacing distance between the fourth lens and the diaphragm, d9 is the spacing distance between the diaphragm and the fifth lens, d10 is the center thickness of the fifth lens, and d11 is the center thickness of the sixth lens. The optical total length TTL of the optical lens may be a distance on the optical axis from a center of the first side of the first lens to an imaging surface of the optical lens. More specifically, TTL, d7, d8, d9, d10, and d11 can further satisfy: (d7+d8+d9+d10+d11)/TTL is less than or equal to 0.8. Satisfies (d7+d8+d9+d10+d11)/TTL less than or equal to 1, is favorable for the rapid transition of light rays between the fourth lens and the glued lens, has short distance, is favorable for compact system structure and realizes miniaturization.
In an exemplary embodiment, an optical lens according to the present application may satisfy: SAG (4)/D22 is more than or equal to 0.4 and less than or equal to 1.5, wherein D22 is the maximum light transmission half caliber of the second side surface of the second lens corresponding to the maximum field angle of the optical lens, and SAG (4) is the sagittal height of the second side surface of the second lens. More specifically, D22 and SAG (4) may further satisfy: SAG (4)/D22 is more than or equal to 0.6 and less than or equal to 1.2. The SAG (4)/D22 is more than or equal to 0.4 and less than or equal to 1.5, so that the second side opening angle of the second lens is larger and controlled within a certain range, the light rays of each view field are in a divergent trend, the central light rays and the edge light rays of each view field are obviously distinguished, and the aberration of the edge light rays and the central light rays of each view field is corrected and high resolution is realized.
In an exemplary embodiment, an optical lens according to the present application may satisfy: BFL/TTL is 0.01 less than or equal to the total optical length of the optical lens, wherein BFL is the optical back focal length of the optical lens, namely the distance between the center of the second side surface of the seventh lens and the imaging surface of the optical lens on the optical axis. More specifically, BFL and TTL may further satisfy: BFL/TTL is not more than 0.04. The BFL/TTL is not less than 0.01, and on the basis of realizing miniaturization, the back focus is long, which is beneficial to the assembly of a module, and simultaneously, the back focus is prolonged, and the energy of ghost images generated by the central reflection of a lens and a color filter is reduced.
In an exemplary embodiment, an optical lens according to the present application may satisfy: -50 ° or less θ1- θ2 or less-5 °, wherein θ1 is an edge opening angle at a maximum field angle of the first side of the second lens and θ2 is a center opening angle of the first side of the second lens. More specifically, θ1 and θ2 can further satisfy: the angle of theta 1-theta 2 is less than or equal to-45 degrees and less than or equal to-8 degrees. The optical path difference between the edge light and the central light can be reduced by rapidly accumulating the optical path of the edge light when the first side surface of the second lens has larger inflection, thereby being beneficial to correcting the aberration of the edge view field, realizing high resolution and being beneficial to more easily obtaining a large view angle under the same chip size.
In an exemplary embodiment, an optical lens according to the present application may satisfy: r5/d5 is 0.01.ltoreq.r5, where r5 is the radius of curvature of the first side of the third lens and d5 is the center thickness of the third lens. More specifically, r5 and d5 may further satisfy: r5/d5 is less than or equal to 1.5. Satisfying r5/d5 which is less than or equal to 0.01, being beneficial to reasonably controlling the curvature radius and the center thickness of the first side surface of the third lens, reducing the deviation of the incidence angle and the emergence angle of the light rays of different fields of view, and leading the light rays to be in gentle transition, thereby reducing the sensitivity.
In an exemplary embodiment, an optical lens according to the present application may satisfy: F7/F is less than or equal to 3.9, wherein F7 is the focal length of the seventh lens, and F is the total effective focal length of the optical lens. More specifically, F7 and F further satisfy: F7/F is less than or equal to 1.5 and less than or equal to 3.9. The focal length of the seventh lens is controlled within a certain range, so that the rapid focusing of light to an imaging surface is facilitated, the rising of the trend of the light is avoided, the caliber of the rear end is reduced, the light receiving is facilitated, and the light quantity is ensured.
In an exemplary embodiment, an optical lens according to the present application may satisfy: 0.15.ltoreq.d3/d4.ltoreq.0.75, where d3 is the center thickness of the second lens and d4 is the air spacing between the second lens and the third lens. More specifically, d3 and d4 may further satisfy: d3/d4 is more than or equal to 0.25 and less than or equal to 0.65. Satisfies that d3/d4 is less than or equal to 0.15 and less than or equal to 0.75, reasonably controls the center thickness of the second lens and the air interval from the second lens to the third lens, is favorable for small deflection change of light rays of the whole optical lens at high and low temperatures, and has good temperature performance.
In an exemplary embodiment, an optical lens according to the present application may satisfy: 3.ltoreq.r5/F.ltoreq.10, where r5 is a radius of curvature of the first side of the third lens and F is a total effective focal length of the optical lens. More specifically, r5 and F may further satisfy: r5/F is more than or equal to 4 and less than or equal to 9.5. The optical lens has the advantages that the optical lens satisfies that r5/F is more than or equal to 3 and less than or equal to 10, the first side surface of the third lens is a convex surface, the curvature radius is controlled within a certain range, light rays emitted by the second lens almost vertically enter the first side surface of the third lens, the light rays are excessively gentle, the optical energy loss is reduced, meanwhile, the light rays smoothly enter the rear lens, aberration is small, and high resolution is realized.
In an exemplary embodiment, an optical lens according to the present application may satisfy: and (d 8+ d 9)/TTL is more than or equal to 0.01 and less than or equal to 0.1, wherein d8 is the interval between the fourth lens and the diaphragm, and d9 is the interval between the diaphragm and the fifth lens. More specifically, d8 and d9 may further satisfy: (d8+d9)/TTL is more than or equal to 0.018 and less than or equal to 0.08. The optical system satisfies that (d8+d9)/TTL is less than or equal to 0.01 and less than or equal to 0.1, the distance between the front lens and the rear lens of the diaphragm is relatively short and controlled in a certain range, which is favorable for converging light rays on the first side of the fifth lens, so that the light rays entering the optical system are effectively converged, the rear port diameter is reduced, and the miniaturization is realized.
In an exemplary embodiment, an optical lens according to the present application may satisfy: and (d 1+ d 3)/TTL is more than or equal to 0.01 and less than or equal to 0.3, wherein d1 is the center thickness of the first lens, d3 is the center thickness of the second lens, and TTL is the total optical length of the optical lens. More specifically, d1, d3, and TTL further satisfy: the (d1+d3)/TTL is more than or equal to 0.05 and less than or equal to 0.2. The optical lens satisfies the condition that (d1+d3)/TTL is less than or equal to 0.01 and less than or equal to 0.3, the first lens and the third lens are glass lenses, the weight of the whole optical lens is large, the center thicknesses of the first lens and the second lens are reasonably set, the center of gravity of the whole system is centered, and meanwhile, the optical lens is compact in structure and miniaturized.
In an exemplary embodiment, an optical lens according to the present application may satisfy:
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When the first side of the second lens has larger inflection, the optical path of the marginal light can be rapidly accumulated to reduce the optical path difference between the marginal light and the central light, thereby being beneficial to correcting the aberration of the marginal visual field, realizing high resolution and being beneficial to the same chip With size, a large field angle is more easily obtained.
In an exemplary embodiment, the optical lens of the present application may further include a filter and/or a cover glass disposed between the seventh lens and the imaging surface as needed to filter light rays having different wavelengths and prevent an image Fang Yuanjian (e.g., a chip) of the optical lens from being damaged.
In an exemplary embodiment, the first to seventh lenses may be spherical lenses or aspherical lenses. The present application does not specifically limit the specific number of spherical lenses and aspherical lenses, and when focusing on imaging quality, the number of aspherical lenses may be increased, even all lenses use aspherical lenses. In particular, in order to improve the resolution quality of the optical system, the second lens, the fourth lens, the fifth lens, the sixth lens, and the seventh lens may each be an aspherical lens. The aspherical lens is characterized in that: the curvature varies continuously from the center to the periphery of the lens. Unlike a spherical lens having a constant curvature from the center to the periphery of the lens, an aspherical lens has a better radius of curvature characteristic, and has advantages of improving distortion aberration and improving astigmatic aberration. After the aspheric lens is adopted, aberration generated during imaging can be eliminated as much as possible, and therefore imaging quality of the lens is improved. The arrangement of the aspheric lens is helpful for correcting system aberration and improving resolution.
According to the optical lens of the embodiment of the application, through reasonable arrangement of the shapes and the focal powers of the lenses, under the condition that only 7 lenses are used, at least one beneficial effect of miniaturization, small caliber, high resolution, long back focal length, large field angle, weak ghost image, good temperature performance, low assembly sensitivity, good imaging quality and the like is achieved. The fifth lens and the sixth lens of the optical lens are glued pieces, which is favorable for reducing the air interval between the two lenses, so that the optical system is compact as a whole, is favorable for reducing procedures, reducing cost, reducing tolerance sensitivity problems of the lens units due to inclination/eccentric core and the like generated in the assembling process, simultaneously, is favorable for reducing light quantity loss caused by reflection between the lenses, improving illuminance and achromatism, and can also remain partial chromatic aberration to balance the chromatic aberration of the system. On the premise of compact structure, the fifth lens and the sixth lens are glued pieces, which are favorable for improving the optical properties such as resolution, optimized distortion, CRA and the like, and can weaken ghost images to a certain extent; the fifth lens and the sixth lens are glued pieces, so that the whole chromatic aberration correction of the system can be shared, aberration can be effectively corrected, the resolution can be improved, the whole optical system is compact, and the miniaturization requirement is met.
In an exemplary embodiment, the first lens and the third lens may be glass lenses. The optical lens made of glass can inhibit the shift of the back focus of the optical lens along with the change of temperature, so as to improve the stability of the system. Meanwhile, the adoption of the glass material can avoid the influence on the normal use of the lens due to the imaging blurring of the lens caused by the high and low temperature change in the use environment. For example, the temperature range of the optical lens with the full glass design is wider, and the stable optical performance can be kept within the range of-40 ℃ to 105 ℃. In particular, when the importance is attached to annotating image quality and reliability, the first lens to the seventh lens may each be a glass aspherical lens. Of course, in applications with low requirements for temperature stability, the first lens to the seventh lens in the optical lens may be made of plastic. The optical lens is made of plastic, so that the manufacturing cost can be effectively reduced. Of course, the first lens to the seventh lens in the optical lens may also be made of plastic and glass in combination.
However, those skilled in the art will appreciate that the number of lenses making up a lens barrel 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 seven lenses are described as an example in the embodiment, the optical lens is not limited to include seven lenses. The optical lens may also include other numbers of lenses, if desired. Specific examples of the optical lens applicable to the above-described embodiments are further described below with reference to the accompanying drawings.
Example 1
An optical lens according to embodiment 1 of the present application is described below with reference to fig. 1. Fig. 1 shows a schematic configuration of an optical lens according to embodiment 1 of the present application.
As shown in fig. 1, the optical lens includes, in order from a first side to a second side along an optical axis, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, and a seventh lens L7.
The first lens L1 is a convex-concave lens having negative optical power, the first side S1 thereof is a convex surface, and the second side S2 thereof is a concave surface. The second lens L2 is a convex-concave lens having negative optical power, the first side S3 of which is convex, and the second side S4 of which is concave. The third lens L3 is a biconvex lens having positive optical power, and has a convex first side S5 and a convex second side S6. The fourth lens L4 is a convex-concave lens having positive power, the first side S7 thereof is a convex surface, and the second side S8 thereof is a concave surface. The fifth lens L5 is a biconvex lens having positive optical power, and has a convex first side S10 and a convex second side S11. The sixth lens L6 is a biconcave lens having negative optical power, and has a concave first side surface S11 and a concave second side surface S12. The seventh lens L7 is a biconvex lens having positive optical power, and has a convex first side S13 and a convex second side S14. The fifth lens L5 and the sixth lens L6 may be cemented to constitute cemented lenses. The first side of the second lens, the second side of the sixth lens and the first side of the seventh lens have a curvature.
The optical lens may further include a stop STO, which may be disposed between the fourth lens L4 and the fifth lens L5 to improve imaging quality. For example, the stop STO may be disposed between the fourth lens L4 and the fifth lens L5 at a position near the first side surface S10 of the fifth lens L5.
Optionally, the optical lens may further include a filter L8 having a first side S15 and a second side S16 and/or a cover glass L9 having a first side S17 and a second side S18. The filter L8 and/or the cover glass L9 can be used for correcting color deviation, and the filter L8 and/or the cover glass L9 can also be used for protecting the image sensing chip IMA located at the imaging plane. Light from the object sequentially passes through the respective surfaces S1 to S18 and is finally imaged on the imaging plane.
The optical lens provided by the present application can be used as, for example, a vehicle-mounted lens for imaging, at which time light from an object sequentially passes through the respective surfaces S1 to S18 and finally is imaged on an imaging surface provided on the second side, where an image sensing chip IMA is provided. It should be understood that the optical lens provided in the present application may also be used as, for example, a projection lens or a laser radar transmitting lens, where light from an image source surface is sequentially transmitted through the surfaces S18 to S1 and finally projected onto a projection surface (not shown) disposed on the first side, where the image sensing chip IMA is disposed.
Table 1 shows the radius of curvature R, the thickness/distance d of each lens of the optical lens of embodiment 1 (it is understood that the thickness/distance d of the row in which S1 is located is the center thickness d1 of the first lens L1, and the thickness/distance d of the row in which S2 is located is the distance d12 between the second side surface S2 of the first lens L1 and the first side surface S3 of the second lens L2, and so on), the refractive index Nd, and the abbe number Vd.
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TABLE 1
In embodiment 1, the first side S3 and the second side S4 of the second lens L2, the first side S7 and the second side S8 of the fourth lens L4, the first side S10 and the second side S11 of the fifth lens L5, the first side S11 and the second side S12 of the sixth lens L6, and the first side S13 and the second side S14 of the seventh lens L7 may be aspherical, and the surface profile x of each aspherical lens may be defined by, but not limited to, the following aspherical formula:
Figure BDA0003385665860000152
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 a conic coefficient; ai is the correction coefficient of the aspherical i-th order. The cone coefficients k and the higher order coefficients A4, A6, A8, A10, A12, A14 and A16 that can be used for each of the aspherical mirror surfaces S3, S4, S7, S8, S10-S14 in example 1 are given in Table 2 below.
Face number k A4 A6 A8 A10 A12 A14 A16
S3 -16.9872 3.0508E-03 -1.8802E-03 3.0181E-04 -2.6525E-05 1.2415E-06 -2.3807E-08 1.5274E-12
S4 -0.7724 -3.7712E-03 -5.5378E-03 -1.8709E-03 1.7983E-03 -5.7567E-04 8.4780E-05 -4.8676E-06
S7 -0.0044 8.5534E-03 3.3006E-04 -9.8422E-06 -6.8731E-05 1.4167E-06 5.1438E-07 1.8412E-07
S8 -0.0896 3.1614E-02 -4.9408E-03 1.0283E-03 -1.2053E-03 -1.0154E-04 6.2607E-05 8.4398E-06
S10 6.5165 8.6984E-03 1.3593E-01 -4.5485E-01 7.9812E-01 -7.6382E-01 3.7785E-01 -7.8234E-02
S11 -0.9709 -4.3721E-01 2.9555E-01 -2.1783E-01 1.4572E-01 -2.4591E-02 -3.0161E-02 1.1246E-02
S12 58.0000 -6.9137E-02 5.4764E-02 -3.0081E-02 1.4520E-02 -4.5648E-03 8.3481E-04 -7.4048E-05
S13 -0.3319 -2.1981E-02 5.1961E-03 -6.3563E-04 -2.5450E-04 1.0173E-04 -1.3394E-05 5.4949E-07
S14 -8.7337 2.0624E-02 -3.1856E-03 -4.1621E-04 3.2253E-04 -1.1711E-04 1.8434E-05 -1.0371E-06
TABLE 2
Example 2
An optical lens according to embodiment 2 of the present application is described below with reference to fig. 2. In this embodiment and the following embodiments, descriptions of portions similar to embodiment 1 will be omitted for brevity. Fig. 2 shows a schematic structural view of an optical lens according to embodiment 2 of the present application.
As shown in fig. 2, the optical lens includes, in order from a first side to a second side along an optical axis, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, and a seventh lens L7.
The first lens L1 is a convex-concave lens having negative optical power, the first side S1 thereof is a convex surface, and the second side S2 thereof is a concave surface. The second lens L2 is a convex-concave lens having negative optical power, the first side S3 of which is convex, and the second side S4 of which is concave. The third lens L3 is a biconvex lens having positive optical power, and has a convex first side S5 and a convex second side S6. The fourth lens L4 is a convex-concave lens having positive power, the first side S7 thereof is a convex surface, and the second side S8 thereof is a concave surface. The fifth lens L5 is a biconvex lens having positive optical power, and has a convex first side S10 and a convex second side S11. The sixth lens L6 is a biconcave lens having negative optical power, and has a concave first side surface S11 and a concave second side surface S12. The seventh lens L7 is a biconvex lens having positive optical power, and has a convex first side S13 and a convex second side S14. The fifth lens L5 and the sixth lens L6 may be cemented to constitute cemented lenses. The first side of the second lens, the second side of the sixth lens and the first side of the seventh lens have a curvature.
The optical lens may further include a stop STO, which may be disposed between the fourth lens L4 and the fifth lens L5 to improve imaging quality. For example, the stop STO may be disposed between the fourth lens L4 and the fifth lens L5 at a position near the first side surface S10 of the fifth lens L5.
Optionally, the optical lens may further include a filter L8 having a first side S15 and a second side S16 and/or a cover glass L9 having a first side S17 and a second side S18. The filter L8 and/or the cover glass L9 can be used to correct color deviations and/or to protect the image sensor chip IMA located at the imaging plane. Light from the object sequentially passes through the respective surfaces S1 to S18 and is finally imaged on the imaging plane.
Table 3 shows the radius of curvature R, thickness/distance d, refractive index Nd, and abbe number Vd of each lens of the optical lens of example 2. Table 4 shows cone coefficients and higher order coefficients that can be used for each aspherical mirror surface in example 2, wherein each aspherical surface profile can be defined by the formula (1) given in example 1 above.
Figure BDA0003385665860000161
Figure BDA0003385665860000171
TABLE 3 Table 3
Face number k A4 A6 A8 A10 A12 A14 A16
S3 -16.9872 3.0508E-03 -1.8802E-03 3.0181E-04 -2.6525E-05 1.2415E-06 -2.3807E-08 1.5274E-12
S4 -0.7724 -3.7712E-03 -5.5378E-03 -1.8709E-03 1.7983E-03 -5.7567E-04 8.4780E-05 -4.8676E-06
S7 -0.0044 8.5534E-03 3.3006E-04 -9.8422E-06 -6.8731E-05 1.4167E-06 5.1438E-07 1.8412E-07
S8 -0.0896 3.1614E-02 -4.9408E-03 1.0283E-03 -1.2053E-03 -1.0154E-04 6.2607E-05 8.4398E-06
S10 6.5165 8.6984E-03 1.3593E-01 -4.5485E-01 7.9812E-01 -7.6382E-01 3.7785E-01 -7.8234E-02
S11 -0.9709 -4.3721E-01 2.9555E-01 -2.1783E-01 1.4572E-01 -2.4591E-02 -3.0161E-02 1.1246E-02
S12 58.0000 -6.9137E-02 5.4764E-02 -3.0081E-02 1.4520E-02 -4.5648E-03 8.3481E-04 -7.4048E-05
S13 -0.3319 -2.1981E-02 5.1961E-03 -6.3563E-04 -2.5450E-04 1.0173E-04 -1.3394E-05 5.4949E-07
S14 -8.7337 2.0624E-02 -3.1856E-03 -4.1621E-04 3.2253E-04 -1.1711E-04 1.8434E-05 -1.0371E-06
TABLE 4 Table 4
Example 3
An optical lens according to embodiment 3 of the present application is described below with reference to fig. 3. Fig. 3 shows a schematic structural view of an optical lens according to embodiment 3 of the present application.
As shown in fig. 3, the optical lens includes, in order from a first side to a second side along an optical axis, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, and a seventh lens L7.
The first lens L1 is a convex-concave lens having negative optical power, the first side S1 thereof is a convex surface, and the second side S2 thereof is a concave surface. The second lens L2 is a convex-concave lens having negative optical power, the first side S3 of which is convex, and the second side S4 of which is concave. The third lens L3 is a biconvex lens having positive optical power, and has a convex first side S5 and a convex second side S6. The fourth lens L4 is a convex-concave lens having positive power, the first side S7 thereof is a convex surface, and the second side S8 thereof is a concave surface. The fifth lens L5 is a biconvex lens having positive optical power, and has a convex first side S10 and a convex second side S11. The sixth lens L6 is a concave-convex lens having negative optical power, and has a concave first side S11 and a convex second side S12. The seventh lens L7 is a biconvex lens having positive optical power, and has a convex first side S13 and a convex second side S14. The fifth lens L5 and the sixth lens L6 may be cemented to constitute cemented lenses. The first side of the second lens, the second side of the sixth lens and the first side of the seventh lens have a curvature.
The optical lens may further include a stop STO, which may be disposed between the fourth lens L4 and the fifth lens L5 to improve imaging quality. For example, the stop STO may be disposed between the fourth lens L4 and the fifth lens L5 at a position near the first side surface S10 of the fifth lens L5.
Optionally, the optical lens may further include a filter L8 having a first side S15 and a second side S16 and/or a cover glass L9 having a first side S17 and a second side S18. The filter L8 and/or the cover glass L9 can be used to correct color deviations and/or to protect the image sensor chip IMA located at the imaging plane. Light from the object sequentially passes through the respective surfaces S1 to S18 and is finally imaged on the imaging plane.
Table 5 shows the radius of curvature R, thickness/distance d, refractive index Nd, and abbe number Vd of each lens of the optical lens of example 3. Table 6 shows cone coefficients and higher order coefficients that can be used for each aspherical mirror surface in example 3, where each aspherical surface profile can be defined by the formula (1) given in example 1 above.
Figure BDA0003385665860000181
TABLE 5
Face number k A4 A6 A8 A10 A12 A14 A16
S3 -19.3694 3.0482E-03 -1.8768E-03 3.0196E-04 -2.6535E-05 1.2398E-06 -2.3837E-08 4.5052E-12
S4 -0.7750 -9.4897E-04 -5.3547E-03 -2.1309E-03 1.7982E-03 -5.7580E-04 8.4720E-05 -4.8657E-06
S7 0.9032 1.0407E-02 1.8188E-03 8.8379E-05 -6.0166E-05 -3.3473E-06 2.5582E-07 2.7255E-06
S8 -9.5310 4.2524E-02 9.8076E-04 3.0402E-03 -2.3194E-03 -1.3618E-03 -1.1926E-04 1.4223E-03
S10 7.2830 1.0480E-02 1.3689E-01 -4.5611E-01 7.9778E-01 -7.6247E-01 3.8201E-01 -8.2568E-02
S11 -1.1766 -4.2958E-01 2.9765E-01 -2.1537E-01 1.5028E-01 -2.1257E-02 -3.1564E-02 1.0083E-02
S12 -101.1133 -6.5897E-02 5.5798E-02 -2.9955E-02 1.4512E-02 -4.5773E-03 8.4824E-04 -6.6266E-05
S13 -0.1253 -2.2465E-02 5.1866E-03 -6.7231E-04 -2.5922E-04 1.0158E-04 -1.3380E-05 5.5234E-07
S14 -16.3633 2.1533E-02 -2.0511E-03 -3.1502E-04 3.2769E-04 -1.1680E-04 1.8410E-05 -1.0587E-06
TABLE 6
Example 4
An optical lens according to embodiment 4 of the present application is described below with reference to fig. 4. Fig. 4 shows a schematic structural view of an optical lens according to embodiment 4 of the present application.
As shown in fig. 4, the optical lens includes, in order from a first side to a second side along an optical axis, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, and a seventh lens L7.
The first lens L1 is a convex-concave lens having negative optical power, the first side S1 thereof is a convex surface, and the second side S2 thereof is a concave surface. The second lens L2 is a convex-concave lens having negative optical power, the first side S3 of which is convex, and the second side S4 of which is concave. The third lens L3 is a biconvex lens having positive optical power, and has a convex first side S5 and a convex second side S6. The fourth lens L4 is a convex-concave lens having positive power, the first side S7 thereof is a convex surface, and the second side S8 thereof is a concave surface. The fifth lens L5 is a biconvex lens having positive optical power, and has a convex first side S10 and a convex second side S11. The sixth lens L6 is a concave-convex lens having negative optical power, and has a concave first side S11 and a convex second side S12. The seventh lens L7 is a biconvex lens having positive optical power, and has a convex first side S13 and a convex second side S14. The fifth lens L5 and the sixth lens L6 may be cemented to constitute cemented lenses. The first side of the second lens, the second side of the sixth lens and the first side of the seventh lens have a curvature.
The optical lens may further include a stop STO, which may be disposed between the fourth lens L4 and the fifth lens L5 to improve imaging quality. For example, the stop STO may be disposed between the fourth lens L4 and the fifth lens L5 at a position near the first side surface S10 of the fifth lens L5.
Optionally, the optical lens may further include a filter L8 having a first side S15 and a second side S16 and/or a cover glass L9 having a first side S17 and a second side S18. The filter L8 and/or the cover glass L9 can be used to correct color deviations and/or to protect the image sensor chip IMA located at the imaging plane. Light from the object sequentially passes through the respective surfaces S1 to S18 and is finally imaged on the imaging plane.
Table 7 shows the radius of curvature R, thickness/distance d, refractive index Nd, and abbe number Vd of each lens of the optical lens of example 4. Table 8 shows cone coefficients and higher order coefficients that can be used for each aspherical mirror surface in example 4, where each aspherical surface profile can be defined by the formula (1) given in example 1 above.
Figure BDA0003385665860000191
Figure BDA0003385665860000201
TABLE 7
Face number k A4 A6 A8 A10 A12 A14 A16
S3 -19.3694 3.0482E-03 -1.8768E-03 3.0196E-04 -2.6535E-05 1.2398E-06 -2.3837E-08 4.5052E-12
S4 -0.7750 -9.4897E-04 -5.3547E-03 -2.1309E-03 1.7982E-03 -5.7580E-04 8.4720E-05 -4.8657E-06
S7 0.9032 1.0407E-02 1.8188E-03 8.8379E-05 -6.0166E-05 -3.3473E-06 2.5582E-07 2.7255E-06
S8 -9.5310 4.2524E-02 9.8076E-04 3.0402E-03 -2.3194E-03 -1.3618E-03 -1.1926E-04 2.1335E-03
S10 7.2830 1.0480E-02 1.3689E-01 -4.5611E-01 7.9778E-01 -7.6247E-01 3.8201E-01 -8.2568E-02
S11 -1.1766 -4.2958E-01 2.9765E-01 -2.1537E-01 1.5028E-01 -2.1257E-02 -3.1564E-02 1.0083E-02
S12 -101.1133 -6.5897E-02 5.5798E-02 -2.9955E-02 1.4512E-02 -4.5773E-03 8.4824E-04 -6.6266E-05
S13 -0.1253 -2.2465E-02 5.1866E-03 -6.7231E-04 -2.5922E-04 1.0158E-04 -1.3380E-05 5.5234E-07
S14 -16.3633 2.1533E-02 -2.0511E-03 -3.1502E-04 3.2769E-04 -1.1680E-04 1.8410E-05 -1.0587E-06
TABLE 8
Example 5
An optical lens according to embodiment 5 of the present application is described below with reference to fig. 5. Fig. 5 shows a schematic structural view of an optical lens according to embodiment 5 of the present application.
As shown in fig. 5, the optical lens includes, in order from a first side to a second side along an optical axis, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, and a seventh lens L7.
The first lens L1 is a convex-concave lens having negative optical power, the first side S1 thereof is a convex surface, and the second side S2 thereof is a concave surface. The second lens L2 is a biconcave lens having negative optical power, the first side surface S3 thereof is a concave surface, and the second side surface S4 thereof is a concave surface. The third lens L3 is a biconvex lens having positive optical power, and has a convex first side S5 and a convex second side S6. The fourth lens L4 is a biconvex lens having positive optical power, and has a convex first side S7 and a convex second side S8. The fifth lens L5 is a biconvex lens having positive optical power, and has a convex first side S10 and a convex second side S11. The sixth lens L6 is a biconcave lens having negative optical power, and has a concave first side surface S11 and a concave second side surface S12. The seventh lens L7 is a biconvex lens having positive optical power, and has a convex first side S13 and a convex second side S14. The fifth lens L5 and the sixth lens L6 may be cemented to constitute cemented lenses. The second side of the sixth lens and the second side of the seventh lens are curved.
The optical lens may further include a stop STO, which may be disposed between the fourth lens L4 and the fifth lens L5 to improve imaging quality. For example, the stop STO may be disposed between the fourth lens L4 and the fifth lens L5 at a position near the first side surface S10 of the fifth lens L5.
Optionally, the optical lens may further include a filter L8 having a first side S15 and a second side S16 and/or a cover glass L9 having a first side S17 and a second side S18. The filter L8 and/or the cover glass L9 can be used to correct color deviations and/or to protect the image sensor chip IMA located at the imaging plane. Light from the object sequentially passes through the respective surfaces S1 to S18 and is finally imaged on the imaging plane.
Table 9 shows the radius of curvature R, thickness/distance d, refractive index Nd, and abbe number Vd of each lens of the optical lens of example 5. Table 10 shows cone coefficients and higher order coefficients that can be used for each aspherical mirror surface in example 5, where each aspherical surface profile can be defined by the formula (1) given in example 1 above.
Figure BDA0003385665860000211
TABLE 9
Face number k A4 A6 A8 A10 A12 A14 A16
S3 -102.7808 7.8396E-03 -2.9591E-03 4.6168E-04 -4.1837E-05 2.0762E-06 -4.2771E-08 0.0000E+00
S4 -0.7636 8.8772E-03 -6.2896E-03 -2.2176E-03 1.8091E-03 -5.7198E-04 8.5204E-05 -4.8827E-06
S7 -0.2763 4.5673E-03 1.1739E-03 -1.2607E-04 -7.5420E-05 -9.5506E-05 1.7388E-05 0.0000E+00
S8 -0.1239 1.6513E-02 -1.6577E-03 -2.0213E-03 -4.4666E-04 1.5006E-04 5.2984E-05 0.0000E+00
S10 47.4121 -1.8544E-03 1.1817E-01 -4.6090E-01 8.0310E-01 -7.5125E-01 3.4656E-01 -5.4538E-02
S11 -0.6821 -4.5076E-01 4.2321E-01 -2.5318E-01 1.0079E-01 -1.9482E-02 3.1000E-03 -1.6079E-03
S12 20.0000 -7.0339E-02 4.9545E-02 -1.9961E-02 5.2925E-03 -4.7719E-04 -1.8859E-05 0.0000E+00
S13 -0.1991 -1.9702E-02 5.1405E-03 -5.8635E-04 -2.2102E-04 1.0148E-04 -1.3310E-05 5.0359E-07
S14 -0.6027 3.5239E-02 -3.3511E-03 -2.9988E-04 3.3551E-04 -1.1643E-04 1.8633E-05 -1.0401E-06
Table 10
Example 6
An optical lens according to embodiment 6 of the present application is described below with reference to fig. 6. Fig. 6 shows a schematic structural view of an optical lens according to embodiment 6 of the present application.
As shown in fig. 6, the optical lens includes, in order from a first side to a second side along an optical axis, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, and a seventh lens L7.
The first lens L1 is a convex-concave lens having negative optical power, the first side S1 thereof is a convex surface, and the second side S2 thereof is a concave surface. The second lens L2 is a biconcave lens having negative optical power, the first side surface S3 thereof is a concave surface, and the second side surface S4 thereof is a concave surface. The third lens L3 is a biconvex lens having positive optical power, and has a convex first side S5 and a convex second side S6. The fourth lens L4 is a biconvex lens having positive optical power, and has a convex first side S7 and a convex second side S8. The fifth lens L5 is a biconvex lens having positive optical power, and has a convex first side S10 and a convex second side S11. The sixth lens L6 is a biconcave lens having negative optical power, and has a concave first side surface S11 and a concave second side surface S12. The seventh lens L7 is a biconvex lens having positive optical power, and has a convex first side S13 and a convex second side S14. The fifth lens L5 and the sixth lens L6 may be cemented to constitute cemented lenses. The second side of the sixth lens and the second side of the seventh lens are curved.
The optical lens may further include a stop STO, which may be disposed between the fourth lens L4 and the fifth lens L5 to improve imaging quality. For example, the stop STO may be disposed between the fourth lens L4 and the fifth lens L5 at a position near the first side surface S10 of the fifth lens L5.
Optionally, the optical lens may further include a filter L8 having a first side S15 and a second side S16 and/or a cover glass L9 having a first side S17 and a second side S18. The filter L8 and/or the cover glass L9 can be used to correct color deviations and/or to protect the image sensor chip IMA located at the imaging plane. Light from the object sequentially passes through the respective surfaces S1 to S18 and is finally imaged on the imaging plane.
Table 11 shows the radius of curvature R, thickness/distance d, refractive index Nd, and abbe number Vd of each lens of the optical lens of example 6. Table 12 shows cone coefficients and higher order term coefficients that can be used for each aspherical mirror surface in example 6, where each aspherical surface profile can be defined by the formula (1) given in example 1 above.
Figure BDA0003385665860000221
Figure BDA0003385665860000231
TABLE 11
Face number k A4 A6 A8 A10 A12 A14 A16
S3 -102.7808 7.8396E-03 -2.9591E-03 4.6168E-04 -4.1837E-05 2.0762E-06 -4.2771E-08 0.0000E+00
S4 -0.7636 8.8772E-03 -6.2896E-03 -2.2176E-03 1.8091E-03 -5.7198E-04 8.5204E-05 -4.8827E-06
S7 -0.2763 4.5673E-03 1.1739E-03 -1.2607E-04 -7.5420E-05 -9.5506E-05 1.7388E-05 0.0000E+00
S8 -0.1239 1.6513E-02 -1.6577E-03 -2.0213E-03 -4.4666E-04 1.5006E-04 5.2984E-05 0.0000E+00
S10 47.4121 -1.8544E-03 1.1817E-01 -4.6090E-01 8.0310E-01 -7.5125E-01 3.4656E-01 -5.4538E-02
S11 -0.6821 -4.5076E-01 4.2321E-01 -2.5318E-01 1.0079E-01 -1.9482E-02 3.1000E-03 -1.6079E-03
S12 20.0000 -7.0339E-02 4.9545E-02 -1.9961E-02 5.2925E-03 -4.7719E-04 -1.8859E-05 0.0000E+00
S13 -0.1991 -1.9702E-02 5.1405E-03 -5.8635E-04 -2.2102E-04 1.0148E-04 -1.3310E-05 5.0359E-07
S14 -0.6027 3.5239E-02 -3.3511E-03 -2.9988E-04 3.3551E-04 -1.1643E-04 1.8633E-05 -1.0401E-06
Table 12
Example 7
An optical lens according to embodiment 7 of the present application is described below with reference to fig. 7. Fig. 7 shows a schematic structural view of an optical lens according to embodiment 7 of the present application.
As shown in fig. 7, the optical lens includes, in order from a first side to a second side along an optical axis, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, and a seventh lens L7.
The first lens L1 is a convex-concave lens having negative optical power, the first side S1 thereof is a convex surface, and the second side S2 thereof is a concave surface. The second lens L2 is a convex-concave lens having negative optical power, the first side S3 of which is convex, and the second side S4 of which is concave. The third lens L3 is a biconvex lens having positive optical power, and has a convex first side S5 and a convex second side S6. The fourth lens L4 is a biconvex lens having positive optical power, and has a convex first side S7 and a convex second side S8. The fifth lens L5 is a biconvex lens having positive optical power, and has a convex first side S10 and a convex second side S11. The sixth lens L6 is a biconcave lens having negative optical power, and has a concave first side surface S11 and a concave second side surface S12. The seventh lens L7 is a biconvex lens having positive optical power, and has a convex first side S13 and a convex second side S14. The fifth lens L5 and the sixth lens L6 may be cemented to constitute cemented lenses. The first side of the second lens, the second side of the sixth lens and the first side of the seventh lens have a curvature.
The optical lens may further include a stop STO, which may be disposed between the fourth lens L4 and the fifth lens L5 to improve imaging quality. For example, the stop STO may be disposed between the fourth lens L4 and the fifth lens L5 at a position near the first side surface S10 of the fifth lens L5.
Optionally, the optical lens may further include a filter L8 having a first side S15 and a second side S16 and/or a cover glass L9 having a first side S17 and a second side S18. The filter L8 and/or the cover glass L9 can be used to correct color deviations and/or to protect the image sensor chip IMA located at the imaging plane. Light from the object sequentially passes through the respective surfaces S1 to S18 and is finally imaged on the imaging plane.
Table 13 shows the radius of curvature R, thickness/distance d, refractive index Nd, and abbe number Vd of each lens of the optical lens of example 7. Table 14 shows cone coefficients and higher order term coefficients that can be used for each aspherical mirror surface in example 7, where each aspherical surface profile can be defined by the formula (1) given in example 1 above.
Figure BDA0003385665860000241
TABLE 13
Face number k A4 A6 A8 A10 A12 A14 A16
S3 -14.1507 7.6858E-03 -2.9786E-03 4.6048E-04 -4.1922E-05 2.0729E-06 -4.2099E-08 0.0000E+00
S4 -0.7727 7.7028E-03 -6.4294E-03 -2.2508E-03 1.8022E-03 -5.7433E-04 8.4794E-05 -4.8638E-06
S7 -0.2561 5.1128E-03 1.0422E-03 -2.3011E-04 6.9336E-06 -3.5349E-07 -9.1240E-07 0.0000E+00
S8 -0.6962 1.5231E-02 -3.1811E-03 2.5473E-04 -6.3877E-05 -3.4103E-05 8.6787E-06 0.0000E+00
S10 12.6162 4.3333E-03 1.3514E-01 -4.5414E-01 7.9822E-01 -7.6522E-01 3.7679E-01 -7.4418E-02
S11 -0.6982 -4.7406E-01 3.1435E-01 -2.4239E-01 1.6508E-01 -2.6263E-02 -3.0247E-02 1.2001E-02
S12 20.0000 -7.8062E-02 4.8834E-02 -2.0004E-02 4.9699E-03 -3.6816E-04 -6.3730E-05 0.0000E+00
S13 -0.3429 -2.0178E-02 4.8029E-03 -7.7585E-04 -2.2767E-04 1.0176E-04 -1.3420E-05 5.4822E-07
S14 -0.2848 3.4370E-02 -3.3795E-03 -3.2018E-04 3.2969E-04 -1.1768E-04 1.8453E-05 -1.0428E-06
TABLE 14
Example 8
An optical lens according to embodiment 8 of the present application is described below with reference to fig. 8. Fig. 8 shows a schematic structural view of an optical lens according to embodiment 8 of the present application.
As shown in fig. 8, the optical lens includes, in order from a first side to a second side along an optical axis, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, and a seventh lens L7.
The first lens L1 is a convex-concave lens having negative optical power, the first side S1 thereof is a convex surface, and the second side S2 thereof is a concave surface. The second lens L2 is a convex-concave lens having negative optical power, the first side S3 of which is convex, and the second side S4 of which is concave. The third lens L3 is a biconvex lens having positive optical power, and has a convex first side S5 and a convex second side S6. The fourth lens L4 is a biconvex lens having positive optical power, and has a convex first side S7 and a convex second side S8. The fifth lens L5 is a biconvex lens having positive optical power, and has a convex first side S10 and a convex second side S11. The sixth lens L6 is a biconcave lens having negative optical power, and has a concave first side surface S11 and a concave second side surface S12. The seventh lens L7 is a biconvex lens having positive optical power, and has a convex first side S13 and a convex second side S14. The fifth lens L5 and the sixth lens L6 may be cemented to constitute cemented lenses. The first side of the second lens, the second side of the sixth lens and the first side of the seventh lens have a curvature.
The optical lens may further include a stop STO, which may be disposed between the fourth lens L4 and the fifth lens L5 to improve imaging quality. For example, the stop STO may be disposed between the fourth lens L4 and the fifth lens L5 at a position near the first side surface S10 of the fifth lens L5.
Optionally, the optical lens may further include a filter L8 having a first side S15 and a second side S16 and/or a cover glass L9 having a first side S17 and a second side S18. The filter L8 and/or the cover glass L9 can be used to correct color deviations and/or to protect the image sensor chip IMA located at the imaging plane. Light from the object sequentially passes through the respective surfaces S1 to S18 and is finally imaged on the imaging plane.
Table 15 shows the radius of curvature R, thickness/distance d, refractive index Nd, and abbe number Vd of each lens of the optical lens of example 8. Table 16 shows cone coefficients and higher order coefficients that can be used for each aspherical mirror in example 8, where each aspherical mirror type can be defined by the formula (1) given in example 1 above.
Figure BDA0003385665860000251
Figure BDA0003385665860000261
TABLE 15
Face number k A4 A6 A8 A10 A12 A14 A16
S3 -14.1507 7.6858E-03 -2.9786E-03 4.6048E-04 -4.1922E-05 2.0729E-06 -4.2099E-08 0.0000E+00
S4 -0.7727 7.7028E-03 -6.4294E-03 -2.2508E-03 1.8022E-03 -5.7433E-04 8.4794E-05 -4.8638E-06
S7 -0.2561 5.1128E-03 1.0422E-03 -2.3011E-04 6.9336E-06 -3.5349E-07 -9.1240E-07 0.0000E+00
S8 -0.6962 1.5231E-02 -3.1811E-03 2.5473E-04 -6.3877E-05 -3.4103E-05 8.6787E-06 0.0000E+00
S10 12.6162 4.3333E-03 1.3514E-01 -4.5414E-01 7.9822E-01 -7.6522E-01 3.7679E-01 -7.4418E-02
S11 -0.6982 -4.7406E-01 3.1435E-01 -2.4239E-01 1.6508E-01 -2.6263E-02 -3.0247E-02 1.2001E-02
S12 20.0000 -7.8062E-02 4.8834E-02 -2.0004E-02 4.9699E-03 -3.6816E-04 -6.3730E-05 0.0000E+00
S13 -0.3429 -2.0178E-02 4.8029E-03 -7.7585E-04 -2.2767E-04 1.0176E-04 -1.3420E-05 5.4822E-07
S14 -0.2848 3.4370E-02 -3.3795E-03 -3.2018E-04 3.2969E-04 -1.1768E-04 1.8453E-05 -1.0428E-06
Table 16
Example 9
An optical lens according to embodiment 9 of the present application is described below with reference to fig. 9. Fig. 9 shows a schematic structural view of an optical lens according to embodiment 9 of the present application.
As shown in fig. 9, the optical lens includes, in order from a first side to a second side along an optical axis, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, and a seventh lens L7.
The first lens L1 is a convex-concave lens having negative optical power, the first side S1 thereof is a convex surface, and the second side S2 thereof is a concave surface. The second lens L2 is a convex-concave lens having negative optical power, the first side S3 of which is convex, and the second side S4 of which is concave. The third lens L3 is a biconvex lens having positive optical power, and has a convex first side S5 and a convex second side S6. The fourth lens L4 is a biconvex lens having positive optical power, and has a convex first side S7 and a convex second side S8. The fifth lens L5 is a biconvex lens having positive optical power, and has a convex first side S10 and a convex second side S11. The sixth lens L6 is a concave-convex lens having negative optical power, and has a concave first side S11 and a convex second side S12. The seventh lens L7 is a biconvex lens having positive optical power, and has a convex first side S13 and a convex second side S14. The fifth lens L5 and the sixth lens L6 may be cemented to constitute cemented lenses. The first side of the second lens, the second side of the sixth lens and the first side of the seventh lens have a curvature.
The optical lens may further include a stop STO, which may be disposed between the fourth lens L4 and the fifth lens L5 to improve imaging quality. For example, the stop STO may be disposed between the fourth lens L4 and the fifth lens L5 at a position near the first side surface S10 of the fifth lens L5.
Optionally, the optical lens may further include a filter L8 having a first side S15 and a second side S16 and/or a cover glass L9 having a first side S17 and a second side S18. The filter L8 and/or the cover glass L9 can be used to correct color deviations and/or to protect the image sensor chip IMA located at the imaging plane. Light from the object sequentially passes through the respective surfaces S1 to S18 and is finally imaged on the imaging plane.
Table 17 shows the radius of curvature R, thickness/distance d, refractive index Nd, and abbe number Vd of each lens of the optical lens of example 9. Table 18 shows cone coefficients and higher order term coefficients that can be used for each aspherical mirror surface in example 9, where each aspherical surface profile can be defined by the formula (1) given in example 1 above.
Figure BDA0003385665860000271
TABLE 17
Face number k A4 A6 A8 A10 A12 A14 A16
S3 -14.9229 7.6184E-03 -2.9843E-03 4.6019E-04 -4.1915E-05 2.0751E-06 -4.2182E-08 0.0000E+00
S4 -0.7737 8.2955E-03 -6.4791E-03 -2.2627E-03 1.8000E-03 -5.7403E-04 8.4881E-05 -4.8826E-06
S7 1.9095 9.1932E-03 8.9338E-04 5.0461E-04 1.9331E-04 -1.8694E-04 3.9850E-05 0.0000E+00
S8 -42.3450 2.5246E-02 5.9091E-04 6.3463E-03 -8.4924E-03 5.1074E-03 -8.4722E-04 0.0000E+00
S10 31.9459 -9.7484E-03 2.2898E-01 -5.8925E-01 7.6876E-01 -5.1308E-01 1.9297E-01 -5.6019E-02
S11 -1.4065 -4.7369E-01 3.2824E-01 -2.5125E-01 1.8123E-01 -3.2934E-02 -6.4059E-02 3.2900E-02
S12 20.0000 -7.1035E-02 4.8474E-02 -1.9224E-02 5.1537E-03 -9.9087E-04 1.1776E-04 0.0000E+00
S13 0.1110 -1.9184E-02 5.1135E-03 -9.0207E-04 -2.9656E-04 9.3742E-05 -1.0863E-05 4.9286E-07
S14 0.0348 -3.6076E-03 -3.3987E-04 3.2781E-04 -1.1810E-04 1.8374E-05 -1.0370E-06 -1.0428E-06
TABLE 18
Example 10
An optical lens according to embodiment 10 of the present application is described below with reference to fig. 10. Fig. 10 shows a schematic structural diagram of an optical lens according to embodiment 10 of the present application.
As shown in fig. 10, the optical lens includes, in order from a first side to a second side along an optical axis, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, and a seventh lens L7.
The first lens L1 is a convex-concave lens having negative optical power, the first side S1 thereof is a convex surface, and the second side S2 thereof is a concave surface. The second lens L2 is a convex-concave lens having negative optical power, the first side S3 of which is convex, and the second side S4 of which is concave. The third lens L3 is a biconvex lens having positive optical power, and has a convex first side S5 and a convex second side S6. The fourth lens L4 is a biconvex lens having positive optical power, and has a convex first side S7 and a convex second side S8. The fifth lens L5 is a biconvex lens having positive optical power, and has a convex first side S10 and a convex second side S11. The sixth lens L6 is a concave-convex lens having negative optical power, and has a concave first side S11 and a convex second side S12. The seventh lens L7 is a biconvex lens having positive optical power, and has a convex first side S13 and a convex second side S14. The fifth lens L5 and the sixth lens L6 may be cemented to constitute cemented lenses. The first side of the second lens, the second side of the sixth lens and the first side of the seventh lens have a curvature.
The optical lens may further include a stop STO, which may be disposed between the fourth lens L4 and the fifth lens L5 to improve imaging quality. For example, the stop STO may be disposed between the fourth lens L4 and the fifth lens L5 at a position near the first side surface S10 of the fifth lens L5.
Optionally, the optical lens may further include a filter L8 having a first side S15 and a second side S16 and/or a cover glass L9 having a first side S17 and a second side S18. The filter L8 and/or the cover glass L9 can be used to correct color deviations and/or to protect the image sensor chip IMA located at the imaging plane. Light from the object sequentially passes through the respective surfaces S1 to S18 and is finally imaged on the imaging plane.
Table 19 shows the radius of curvature R, thickness/distance d, refractive index Nd, and abbe number Vd of each lens of the optical lens of example 10. Table 20 shows cone coefficients and higher order term coefficients that can be used for each aspherical mirror surface in example 10, where each aspherical surface profile can be defined by equation (1) given in example 1 above.
Figure BDA0003385665860000281
Figure BDA0003385665860000291
TABLE 19
Face number k A4 A6 A8 A10 A12 A14 A16
S3 -14.9229 7.6184E-03 -2.9843E-03 4.6019E-04 -4.1915E-05 2.0751E-06 -4.2182E-08 0.0000E+00
S4 -0.7737 8.2955E-03 -6.4791E-03 -2.2627E-03 1.8000E-03 -5.7403E-04 8.4881E-05 -4.8826E-06
S7 1.9095 9.1932E-03 8.9338E-04 5.0461E-04 1.9331E-04 -1.8694E-04 3.9850E-05 0.0000E+00
S8 -42.3450 2.5246E-02 5.9091E-04 6.3463E-03 -8.4924E-03 5.1074E-03 -8.4722E-04 0.0000E+00
S10 31.9459 -9.7484E-03 2.2898E-01 -5.8925E-01 7.6876E-01 -5.1308E-01 1.9297E-01 -5.6019E-02
S11 -1.4065 -4.7369E-01 3.2824E-01 -2.5125E-01 1.8123E-01 -3.2934E-02 -6.4059E-02 3.2900E-02
S12 20.0000 -7.1035E-02 4.8474E-02 -1.9224E-02 5.1537E-03 -9.9087E-04 1.1776E-04 0.0000E+00
S13 0.1110 -1.9184E-02 5.1135E-03 -9.0207E-04 -2.9656E-04 9.3742E-05 -1.0863E-05 4.9286E-07
S14 0.0348 -3.6076E-03 -3.3987E-04 3.2781E-04 -1.1810E-04 1.8374E-05 -1.0370E-06 -1.0428E-06
Table 20
Example 11
An optical lens according to embodiment 11 of the present application is described below with reference to fig. 11. Fig. 11 shows a schematic structural view of an optical lens according to embodiment 11 of the present application.
As shown in fig. 11, the optical lens includes, in order from a first side to a second side along an optical axis, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, and a seventh lens L7.
The first lens L1 is a convex-concave lens having negative optical power, the first side S1 thereof is a convex surface, and the second side S2 thereof is a concave surface. The second lens L2 is a convex-concave lens having negative optical power, the first side S3 of which is convex, and the second side S4 of which is concave. The third lens L3 is a biconvex lens having positive optical power, and has a convex first side S5 and a convex second side S6. The fourth lens L4 is a biconvex lens having positive optical power, and has a convex first side S7 and a convex second side S8. The fifth lens L5 is a biconcave lens having negative optical power, and has a concave first side surface S10 and a concave second side surface S11. The sixth lens L6 is a biconvex lens having positive optical power, and has a convex first side S11 and a convex second side S12. The seventh lens L7 is a biconvex lens having positive optical power, and has a convex first side S13 and a convex second side S14. The fifth lens L5 and the sixth lens L6 may be cemented to constitute cemented lenses. The first side of the second lens, the second side of the sixth lens and the first side of the seventh lens have a curvature.
The optical lens may further include a stop STO, which may be disposed between the fourth lens L4 and the fifth lens L5 to improve imaging quality. For example, the stop STO may be disposed between the fourth lens L4 and the fifth lens L5 at a position near the first side surface S10 of the fifth lens L5.
Optionally, the optical lens may further include a filter L8 having a first side S15 and a second side S16 and/or a cover glass L9 having a first side S17 and a second side S18. The filter L8 and/or the cover glass L9 can be used to correct color deviations and/or to protect the image sensor chip IMA located at the imaging plane. Light from the object sequentially passes through the respective surfaces S1 to S18 and is finally imaged on the imaging plane.
Table 21 shows the radius of curvature R, thickness/distance d, refractive index Nd, and abbe number Vd of each lens of the optical lens of example 11. Table 22 shows cone coefficients and higher order term coefficients that can be used for each aspherical mirror surface in example 11, where each aspherical surface profile can be defined by the formula (1) given in example 1 above.
Figure BDA0003385665860000301
Table 21
Face number k A4 A6 A8 A10 A12 A14 A16
S3 -63.7129 7.3692E-03 -2.9810E-03 4.6202E-04 -4.1811E-05 2.0752E-06 -4.2533E-08 0.0000E+00
S4 -0.7690 9.0274E-03 -6.4070E-03 -2.2917E-03 1.7895E-03 -5.7605E-04 8.4775E-05 -4.7349E-06
S7 0.7738 6.4151E-03 1.8535E-03 -3.6638E-05 3.9025E-05 -5.2678E-06 2.5788E-06 0.0000E+00
S8 3.9381 1.3415E-02 -2.9962E-03 2.0905E-03 5.9399E-03 1.8232E-03 -3.6177E-03 0.0000E+00
S10 200.0124 1.4789E-02 1.0451E-01 -1.3676E+00 -3.6316E+00 -1.6877E+01 6.7212E+01 0.0000E+00
S11 1.7692 1.0140E-02 3.1587E-02 6.7482E-02 6.1517E-02 -1.0144E+00 1.4959E-01 -3.4014E+00
S12 11.2339 -1.7228E-03 -2.1122E-04 -1.1259E-05 1.0374E-04 7.9219E-05 5.7454E-05 4.8928E-05
S13 0.1761 -1.8555E-02 4.5839E-03 -7.2504E-04 -2.4781E-04 9.2074E-05 -1.8300E-05 -1.2818E-06
S14 0.6713 1.0432E-04 6.3328E-05 1.6613E-05 3.7357E-06 7.9762E-07 1.7804E-07 4.5883E-08
Table 22
Example 12
An optical lens according to embodiment 12 of the present application is described below with reference to fig. 12. Fig. 12 shows a schematic structural diagram of an optical lens according to embodiment 12 of the present application.
As shown in fig. 12, the optical lens includes, in order from a first side to a second side along an optical axis, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, and a seventh lens L7.
The first lens L1 is a convex-concave lens having negative optical power, the first side S1 thereof is a convex surface, and the second side S2 thereof is a concave surface. The second lens L2 is a convex-concave lens having negative optical power, the first side S3 of which is convex, and the second side S4 of which is concave. The third lens L3 is a biconvex lens having positive optical power, and has a convex first side S5 and a convex second side S6. The fourth lens L4 is a biconvex lens having positive optical power, and has a convex first side S7 and a convex second side S8. The fifth lens L5 is a biconcave lens having negative optical power, and has a concave first side surface S10 and a concave second side surface S11. The sixth lens L6 is a biconvex lens having positive optical power, and has a convex first side S11 and a convex second side S12. The seventh lens L7 is a biconvex lens having positive optical power, and has a convex first side S13 and a convex second side S14. The fifth lens L5 and the sixth lens L6 may be cemented to constitute cemented lenses. The first side of the second lens, the second side of the sixth lens and the first side of the seventh lens have a curvature.
The optical lens may further include a stop STO, which may be disposed between the fourth lens L4 and the fifth lens L5 to improve imaging quality. For example, the stop STO may be disposed between the fourth lens L4 and the fifth lens L5 at a position near the first side surface S10 of the fifth lens L5.
Optionally, the optical lens may further include a filter L8 having a first side S15 and a second side S16 and/or a cover glass L9 having a first side S17 and a second side S18. The filter L8 and/or the cover glass L9 can be used to correct color deviations and/or to protect the image sensor chip IMA located at the imaging plane. Light from the object sequentially passes through the respective surfaces S1 to S18 and is finally imaged on the imaging plane.
Table 23 shows the radius of curvature R, thickness/distance d, refractive index Nd, and abbe number Vd of each lens of the optical lens of example 12. Table 24 shows cone coefficients and higher order term coefficients that can be used for each of the aspherical mirror surfaces in example 12, wherein each of the aspherical surface profiles can be defined by the formula (1) given in example 1 above.
Figure BDA0003385665860000311
Figure BDA0003385665860000321
Table 23
Face number k A4 A6 A8 A10 A12 A14 A16
S3 -64.8642 7.3771E-03 -2.9809E-03 4.6203E-04 -4.1805E-05 2.0759E-06 -4.2469E-08 0.0000E+00
S4 -0.7693 9.0602E-03 -6.4104E-03 -2.2934E-03 1.7890E-03 -5.7628E-04 8.4731E-05 -4.7417E-06
S7 0.9256 6.5963E-03 1.9900E-03 3.7404E-05 1.8494E-05 3.5473E-05 -2.5594E-04 0.0000E+00
S8 10.5771 1.1111E-02 -7.3102E-03 -4.5269E-03 -1.9181E-03 8.5753E-03 -5.6043E-03 0.0000E+00
S10 200.0148 3.0447E-03 4.7172E-01 -7.1850E-01 -2.9156E+00 -1.9200E+01 3.6507E+01 0.0000E+00
S11 -5.8273 -2.6258E-02 -2.5616E-01 7.7046E-01 -4.3721E-02 -8.4401E-01 -3.5172E-01 -4.3295E+00
S12 10.2678 -6.2695E-04 1.3571E-04 9.9091E-05 1.3093E-04 7.0157E-05 3.4101E-05 3.3467E-05
S13 -2.5069 -1.9780E-02 4.2404E-03 -8.2739E-04 -2.8055E-04 8.2966E-05 -2.0302E-05 -1.6074E-06
S14 0.4621 7.8279E-04 1.8226E-04 3.7022E-05 7.1201E-06 1.2844E-06 2.3481E-07 5.2265E-08
Table 24
In summary, examples 1 to 12 satisfy the relationships shown in tables 25-1 and 25-2, respectively, below. In tables 25-1 and 25-2, F, F, F2, F3, F4, F5, F6, F7, TTL, r7, D7, r8, SAG (11), D11, F56, D, H, SAG (7), D7, D8, D9, D10, r5, D3, D1, D4, BFL, SAG (4), D22, D5,
Figure BDA0003385665860000323
In millimeters (mm), FOV, θ1, θ2 in degrees (°).
Figure BDA0003385665860000322
/>
Figure BDA0003385665860000331
TABLE 25-1
Figure BDA0003385665860000341
/>
Figure BDA0003385665860000351
TABLE 25-2
The application also provides an electronic device, which can comprise the optical lens and the imaging element for converting an optical image formed by the optical lens into an electric signal. The electronic device may be a stand-alone electronic device such as a detection range camera or may be an imaging module integrated with such a detection range device. The electronic device may also be a stand-alone imaging device, such as an onboard camera, or an imaging module integrated on, for example, a driving assistance system.
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 (10)

1. The optical lens is characterized in that the optical lens sequentially comprises from a first side to a second side along an optical axis:
a first lens with negative focal power, wherein a first side surface of the first lens is a convex surface, and a second side surface of the first lens is a concave surface;
a second lens having negative optical power, the second side of which is concave;
a third lens with positive focal power, wherein the first side surface of the third lens is a convex surface, and the second side surface of the third lens is a convex surface;
a fourth lens having positive optical power, the first side of which is convex;
a fifth lens having optical power;
a sixth lens having optical power; and
the first side surface of the seventh lens with positive focal power is a convex surface, and the second side surface of the seventh lens is a convex surface.
2. The optical lens of claim 1, wherein the first side of the second lens is convex.
3. The optical lens of claim 2, wherein an edge opening angle θ1 at a maximum field angle of the first side of the second lens and a center opening angle θ2 of the first side of the second lens satisfy: -50 DEG is less than or equal to theta 1-theta 2 is less than or equal to-5 deg.
4. The optical lens of claim 2, wherein the first side of the second lens has a caliber of
Figure FDA0003385665850000011
Time sagittal height->
Figure FDA0003385665850000012
The aperture of the first side surface of the second lens is +. >
Figure FDA0003385665850000013
Time sagittal height->
Figure FDA0003385665850000014
The method meets the following conditions:
Figure FDA0003385665850000015
and->
Figure FDA0003385665850000016
5. The optical lens of claim 1, wherein the first side of the second lens is concave.
6. The optical lens of claim 1, wherein the second side of the fourth lens is convex.
7. The optical lens of claim 1, wherein the second side of the fourth lens is concave.
8. The optical lens of claim 1, wherein the fifth lens has positive optical power, and the first side surface is convex and the second side surface is convex.
9. The optical lens is characterized in that the optical lens sequentially comprises from a first side to a second side along an optical axis:
a first lens having negative optical power;
a second lens having negative optical power;
a third lens having positive optical power;
a fourth lens having positive optical power;
a fifth lens having optical power;
a sixth lens having optical power; and
a seventh lens having positive optical power;
the total effective focal length F of the optical lens, the radius of curvature r7 of the first side surface of the fourth lens and the radius of curvature r8 of the second side surface of the fourth lens satisfy: the ratio of F/r7 to F/r8 is less than or equal to 0.20 and less than or equal to 1.0.
10. An electronic device comprising an optical lens according to any one of claims 1 to 9 and an imaging element for converting an optical image formed by the optical lens into an electrical signal.
CN202111450377.3A 2021-12-01 2021-12-01 Optical lens and electronic device Pending CN116203699A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116482842A (en) * 2023-06-19 2023-07-25 协益电子（苏州）有限公司 Optical lens, camera device and driving tool with same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116482842A (en) * 2023-06-19 2023-07-25 协益电子（苏州）有限公司 Optical lens, camera device and driving tool with same
CN116482842B (en) * 2023-06-19 2023-09-22 协益电子（苏州）有限公司 Optical lens, camera device and driving tool with same

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