CN116974042A - Ultra-wide-angle high-definition optical system for monitoring personnel in vehicle - Google Patents
Ultra-wide-angle high-definition optical system for monitoring personnel in vehicle Download PDFInfo
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- CN116974042A CN116974042A CN202310554371.3A CN202310554371A CN116974042A CN 116974042 A CN116974042 A CN 116974042A CN 202310554371 A CN202310554371 A CN 202310554371A CN 116974042 A CN116974042 A CN 116974042A
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- 230000003287 optical effect Effects 0.000 title claims abstract description 36
- 238000012544 monitoring process Methods 0.000 title claims abstract description 13
- 230000005499 meniscus Effects 0.000 claims abstract description 23
- 230000009286 beneficial effect Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 2
- 238000003384 imaging method Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000005457 optimization Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004297 night vision Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004313 glare Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 102100034112 Alkyldihydroxyacetonephosphate synthase, peroxisomal Human genes 0.000 description 1
- 101000799143 Homo sapiens Alkyldihydroxyacetonephosphate synthase, peroxisomal Proteins 0.000 description 1
- 206010070834 Sensitisation Diseases 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000000848 angular dependent Auger electron spectroscopy Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000008313 sensitization Effects 0.000 description 1
Classifications
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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
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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
- G02B13/06—Panoramic objectives; So-called "sky lenses" including panoramic objectives having reflecting surfaces
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- Optics & Photonics (AREA)
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Abstract
The invention relates to the technical field of vehicle lenses for traveling, in particular to an optical system for monitoring personnel in a vehicle with ultra-wide angle and high definition. The optical lens comprises a first lens L1, a second lens L2, a diaphragm STOP, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6 and a seventh lens L7 which are sequentially arranged at intervals along a light incident light path from left to right; the first lens element L1 is a negative meniscus lens element, and has a convex object-side surface and a concave image-side surface. The beneficial effects of the invention are as follows: the optical lens has good optical performances such as large aperture, ultra-wide angle, high pixels and the like by adopting the mutual combination of seven different lenses, and is applicable to personnel monitoring in automobiles, and can provide higher definition pictures and wider observation fields for intelligent automobiles, and has better observation effects.
Description
Technical Field
The invention relates to the technical field of vehicle lenses for traveling, in particular to an optical system for monitoring personnel in a vehicle with ultra-wide angle and high definition.
Background
In order to ensure driving safety, the ADAS function of the automobile needs to realize all-weather operation as much as possible. The camera senses the surrounding environment through sensitization and an algorithm, so that the night vision capability of the camera needs to be enhanced under the scene of insufficient light such as night driving, tunnel passing and the like. The system can assist in knowing the forward situation without having to turn on the high beam all the way to affect the oncoming and forward vehicles. When the vehicle is in a meeting, if the light of the opposite vehicle is too bright to cause glare, the night vision system can assist the driver to see the front situation clearly. The distinguishing capability of the vehicle in fog is also stronger, and the system can monitor the front situation through infrared rays, so that potential hazards can be avoided in advance.
The solutions to the above problems in the prior art are few, and the thought is often focused on the structural design of the optical lens holder or base, which is separated from the optical lens design itself; but also causes the problems of high cost of actual products, complex structure, troublesome operation, durability, easy damage and the like. The design solution thought for the internal lens structure of the lens is lacking.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: under the current night driving environment or under the scene such as crossing tunnel, the night vision ability of on-vehicle camera lens is not enough, needs the cooperation far-reaching headlamp just can see the place ahead condition clearly, runs into head-on glare and heavy fog weather, and the identification ability of current optical system camera lens is also very poor.
In order to solve the problems, the invention adopts the following technical scheme: an ultra-wide-angle high-definition optical system for monitoring personnel in a vehicle comprises a first lens L1, a second lens L2, a diaphragm STOP, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6 and a seventh lens L7 which are sequentially arranged at intervals from left to right along a light incident light path; the first lens L1 is a meniscus negative lens, the object side surface of the first lens L1 is a convex surface, and the image side surface of the first lens L1 is a concave surface; the second lens L2 is a meniscus negative lens, the object side surface of the second lens L2 is a convex surface, and the image side surface of the second lens L2 is a concave surface; the third lens L3 is a biconvex positive lens, and both the object side surface and the image side surface of the third lens L3 are convex surfaces; the third lens element L4 is a negative meniscus lens element, and has a convex object-side surface and a concave image-side surface; the fifth lens element L5 is a meniscus positive lens element, with a concave object-side surface and a convex image-side surface; the sixth lens L6 is a biconvex positive lens, and both the object side surface and the image side surface thereof are convex surfaces; the seventh lens element L7 has a concave object-side surface and a convex image-side surface.
The beneficial effects of the invention are as follows: the optical lens has good optical performances such as large aperture, ultra-wide angle, high pixels and the like by adopting the mutual combination of seven different lenses, is applicable to the monitoring of personnel in automobiles, can provide higher definition pictures and wider observation fields for intelligent automobiles, and has better observation effect. The meniscus lens with the convex surface facing the outer side can collect light rays with a large view field as much as possible to enable the light rays to enter the optical system; the second lens has negative focal power, so that the incidence angle of the light rays with large field of view can be further reduced, and the control of the chief ray angle CRA is facilitated.
As a further improvement of the present invention, the technical problem to be solved is: the better imaging quality of the overall optical system requires optimization of the lens optical coefficients.
In order to solve the technical problems, the invention further adopts the following technical scheme: the first lens satisfies the relation: nd is more than or equal to 1.77, vd is less than or equal to 49.6; the second lens satisfies the relation: nd is more than or equal to 1.62, vd is more than or equal to 36.3; the third lens satisfies the relation: nd is more than or equal to 1.96, vd is less than or equal to 55.5; the fourth lens satisfies the relation: nd is more than or equal to 1.62, vd is less than or equal to 36.3; the fifth lens satisfies the relation: nd is more than or equal to 1.96, vd is more than or equal to 55; the sixth lens satisfies the relation: nd is more than or equal to 1.5, vd is more than or equal to 81.6, and the seventh lens satisfies the relation: nd is more than or equal to 1.95, vd is more than or equal to 17.9, wherein the refractive index of Nd is higher than or equal to Vd, and the Abbe number is higher than or equal to Vd.
The improved beneficial effects are as follows: the optical system formed by the lenses has short total length of the light path, small volume of the lens and large back focus, and can be matched with cameras with various interfaces for use; meanwhile, the system has larger aperture and good imaging quality.
As a further improvement of the present invention, the technical problem to be solved is: how the cap and the lens barrel structure of the optical system can be stably assembled.
In order to solve the technical problems, the invention further adopts the following technical scheme: the outer side of the optical system is provided with a cap and a lens cone which are matched with each other; the cap is connected with the lens cone through threads.
The improved beneficial effects are as follows: by means of threaded connection, the lens structure of the optical system can be stably fixed in the lens barrel.
Drawings
Fig. 1 is a schematic view of the internal structure of a lens in an imaging plane according to the present invention.
Fig. 2 is a graph of MTF for an optical system in accordance with the present invention.
Fig. 3 is a graph of the relative illuminance ri of the optical system according to the present invention.
Fig. 4 is a spotdiagram of aberrations of the optical system of the present invention.
FIG. 5 shows the radius of curvature R, thickness d, and refractive index N of each lens in the optical system of the present invention d Abbe number V d And (5) forming a table data diagram.
FIG. 6 is a diagram showing the light paths of different angles in the lens of the optical system according to the present invention.
The text labels in the figures are represented as L1 and a first lens; l2, a second lens; l3, a third lens; l4, a fourth lens; l5, a fifth lens; l6, sixth lens; l7, seventh lens; STOP and STOP; 9. capping; 10. lens barrel.
Detailed Description
In order that those skilled in the art may better understand the technical solutions of the present invention, the following detailed description of the present invention with reference to the accompanying drawings is provided for exemplary and explanatory purposes only and should not be construed as limiting the scope of the present invention.
Example 1:
an ultra-wide-angle high-definition optical system for monitoring personnel in a vehicle comprises a first lens L1, a second lens L2, a diaphragm STOP, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6 and a seventh lens L7 which are sequentially arranged at intervals from left to right along a light incident light path; the first lens L1 is a meniscus negative lens, the object side surface of the first lens L1 is a convex surface, and the image side surface of the first lens L1 is a concave surface; the second lens L2 is a meniscus negative lens, the object side surface of the second lens L2 is a convex surface, and the image side surface of the second lens L2 is a concave surface; the third lens L3 is a biconvex positive lens, and both the object side surface and the image side surface of the third lens L3 are convex surfaces; the third lens element L4 is a negative meniscus lens element, and has a convex object-side surface and a concave image-side surface; the fifth lens element L5 is a meniscus positive lens element, with a concave object-side surface and a convex image-side surface; the sixth lens L6 is a biconvex positive lens, and both the object side surface and the image side surface thereof are convex surfaces; the seventh lens element L7 has a concave object-side surface and a convex image-side surface.
Example 2:
as a further optimization of the above embodiment: an ultra-wide-angle high-definition optical system for monitoring personnel in a vehicle comprises a first lens L1, a second lens L2, a diaphragm STOP, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6 and a seventh lens L7 which are sequentially arranged at intervals from left to right along a light incident light path; the first lens L1 is a meniscus negative lens, the object side surface of the first lens L1 is a convex surface, and the image side surface of the first lens L1 is a concave surface; the second lens L2 is a meniscus negative lens, the object side surface of the second lens L2 is a convex surface, and the image side surface of the second lens L2 is a concave surface; the third lens L3 is a biconvex positive lens, and both the object side surface and the image side surface of the third lens L3 are convex surfaces; the third lens element L4 is a negative meniscus lens element, and has a convex object-side surface and a concave image-side surface; the fifth lens element L5 is a meniscus positive lens element, with a concave object-side surface and a convex image-side surface; the sixth lens L6 is a biconvex positive lens, and both the object side surface and the image side surface thereof are convex surfaces; the seventh lens element L7 has a concave object-side surface and a convex image-side surface. The first lens satisfies the relation: nd is more than or equal to 1.77, vd is less than or equal to 49.6; the second lens satisfies the relation: nd is more than or equal to 1.62, vd is more than or equal to 36.3; the third lens satisfies the relation: nd is more than or equal to 1.96, vd is less than or equal to 55.5; the fourth lens satisfies the relation: nd is more than or equal to 1.62, vd is less than or equal to 36.3; the fifth lens satisfies the relation: nd is more than or equal to 1.96, vd is more than or equal to 55; the sixth lens satisfies the relation: nd is greater than or equal to 1.5, vd is greater than or equal to 81.6, and the seventh lens satisfies the relation: nd is more than or equal to 1.95, vd is more than or equal to 17.9, wherein the refractive index of Nd is higher than or equal to Vd, and the Abbe number is higher than or equal to Vd.
Example 3:
as a further optimization of the above embodiment: an ultra-wide-angle high-definition optical system for monitoring personnel in a vehicle comprises a first lens L1, a second lens L2, a diaphragm STOP, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6 and a seventh lens L7 which are sequentially arranged at intervals from left to right along a light incident light path; the first lens L1 is a meniscus negative lens, the object side surface of the first lens L1 is a convex surface, and the image side surface of the first lens L1 is a concave surface; the second lens L2 is a meniscus negative lens, the object side surface of the second lens L2 is a convex surface, and the image side surface of the second lens L2 is a concave surface; the third lens L3 is a biconvex positive lens, and both the object side surface and the image side surface of the third lens L3 are convex surfaces; the third lens element L4 is a negative meniscus lens element, and has a convex object-side surface and a concave image-side surface; the fifth lens element L5 is a meniscus positive lens element, with a concave object-side surface and a convex image-side surface; the sixth lens L6 is a biconvex positive lens, and both the object side surface and the image side surface thereof are convex surfaces; the seventh lens L7 is a positive meniscus lens, the object side surface of the seventh lens L7 is a concave surface, and the image side surface of the seventh lens L7 is a convex surface; the outer side of the optical system is provided with a cap 9 and a lens cone 10 which are matched with each other; the cap 9 is connected with the lens barrel 10 by threads.
As a further optimization of the above embodiment: as shown in fig. 5, seven lenses are taken as examples in the embodiment, and the design of large light transmission and small angle ensures the distortion and light transmission of the lens by reasonably distributing the focal power, the surface type, the center thickness and the axial spacing between the lenses; the resolution and imaging quality of the lens are improved.
The optical system formed by the lenses has long focal length, large aperture, small distortion and good imaging quality; fig. 2 and 3 are MTF graphs and relative illuminance ri graphs of the optical system. From fig. 2 and 3, it can be seen that the optical system has excellent imaging quality, and fully meets the requirement of two million pixels for image pickup.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present invention and its core ideas. The foregoing is merely illustrative of the preferred embodiments of the invention, and it is noted that there is virtually no limit to the specific structure which may be imposed by those skilled in the art without departing from the spirit of the invention, and that modifications, adaptations, or variations of the foregoing features may be combined in a suitable manner; such modifications, variations and combinations, or the direct application of the inventive concepts and aspects to other applications without modification, are contemplated as falling within the scope of the present invention.
Claims (3)
1. An ultra-wide-angle high-definition optical system for monitoring personnel in vehicle is characterized in that: the lens comprises a first lens L1, a second lens L2, a diaphragm STOP, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6 and a seventh lens L7 which are sequentially arranged at intervals from left to right along a light incident light path; the first lens L1 is a meniscus negative lens, the object side surface of the first lens L1 is a convex surface, and the image side surface of the first lens L1 is a concave surface; the second lens L2 is a meniscus negative lens, the object side surface of the second lens L2 is a convex surface, and the image side surface of the second lens L2 is a concave surface; the third lens L3 is a biconvex positive lens, and both the object side surface and the image side surface of the third lens L3 are convex surfaces; the third lens element L4 is a negative meniscus lens element, and has a convex object-side surface and a concave image-side surface; the fifth lens element L5 is a meniscus positive lens element, with a concave object-side surface and a convex image-side surface; the sixth lens L6 is a biconvex positive lens, and both the object side surface and the image side surface thereof are convex surfaces; the seventh lens element L7 has a concave object-side surface and a convex image-side surface.
2. The ultra-wide-angle high-definition in-vehicle personnel monitoring optical system according to claim 1, wherein: the first lens satisfies the relation: nd is more than or equal to 1.77, vd is less than or equal to 49.6; the second lens satisfies the relation: nd is more than or equal to 1.62, vd is more than or equal to 36.3; the third lens satisfies the relation: nd is more than or equal to 1.96, vd is less than or equal to 55.5; the fourth lens satisfies the relation: nd is more than or equal to 1.62, vd is less than or equal to 36.3; the fifth lens satisfies the relation: nd is more than or equal to 1.96, vd is more than or equal to 55; the sixth lens satisfies the relation: nd is greater than or equal to 1.5, vd is greater than or equal to 81.6, and the seventh lens satisfies the relation: nd is more than or equal to 1.95, vd is more than or equal to 17.9, wherein the refractive index of Nd is higher than or equal to Vd, and the Abbe number is higher than or equal to Vd.
3. The ultra-wide-angle high-definition in-vehicle personnel monitoring optical system according to claim 1, wherein: a cap (9) and a lens cone (10) which are matched with each other are arranged on the outer side of the optical system; the cap (9) is connected with the lens cone (10) through threads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310554371.3A CN116974042A (en) | 2023-05-17 | 2023-05-17 | Ultra-wide-angle high-definition optical system for monitoring personnel in vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310554371.3A CN116974042A (en) | 2023-05-17 | 2023-05-17 | Ultra-wide-angle high-definition optical system for monitoring personnel in vehicle |
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| Publication Number | Publication Date |
|---|---|
| CN116974042A true CN116974042A (en) | 2023-10-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310554371.3A Pending CN116974042A (en) | 2023-05-17 | 2023-05-17 | Ultra-wide-angle high-definition optical system for monitoring personnel in vehicle |
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| Country | Link |
|---|---|
| CN (1) | CN116974042A (en) |
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- 2023-05-17 CN CN202310554371.3A patent/CN116974042A/en active Pending
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