CN108227137B - High-definition vehicle-mounted lens for identifying middle and long distance obstacles - Google Patents
High-definition vehicle-mounted lens for identifying middle and long distance obstacles Download PDFInfo
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- CN108227137B CN108227137B CN201711475165.4A CN201711475165A CN108227137B CN 108227137 B CN108227137 B CN 108227137B CN 201711475165 A CN201711475165 A CN 201711475165A CN 108227137 B CN108227137 B CN 108227137B
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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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Abstract
The invention discloses a high-definition vehicle-mounted lens for identifying a middle-distance obstacle, which comprises a lens barrel body, wherein a positive focal power front lens group and a positive focal power rear lens group are sequentially arranged in the lens barrel body from an object space to an image space, the positive focal power front lens group consists of a positive focal power first lens, a positive focal power second lens and a negative focal power third lens, the positive focal power first lens is fixed in the lens barrel body through an outer clamping ring, the positive focal power rear lens group is a positive focal power fourth lens, and a diaphragm is arranged between the positive focal power front lens group and the positive focal power rear lens group. The invention has compact structure and good shockproof effect, and is very suitable for a vehicle-mounted camera system.
Description
Technical Field
The invention relates to the technical field of optical imaging equipment, in particular to a high-definition vehicle-mounted lens for identifying middle and long distance obstacles.
Background
In recent years, intelligent automobiles become a research hotspot in the automobile industry, and assisted driving and automatic driving are the leading directions of the intelligent automobiles. And the intelligent automobile is required to realize auxiliary driving and automatic driving, and a high-definition vehicle-mounted lens-based target identification and obstacle identification system is indispensable. At present, most of common vehicle-mounted lenses in the market are wide-angle lenses and ultra-wide-angle lenses with large field angles, the lenses have a good identification function on targets around a vehicle body, have poor identification capability on distant targets and obstacles, and cannot give early warning on distant targets and obstacles in front of a high-speed driving-assisted and automatic driving intelligent vehicle.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides a high-definition vehicle-mounted lens which is used in cooperation with other vehicle-mounted lenses and a vehicle-mounted radar to overcome the defect that an intelligent vehicle cannot identify a long-distance tiny obstacle enough, and improve the early warning capability of the intelligent vehicle for the long-distance obstacle.
In order to achieve the design purpose, the technical scheme adopted by the invention is as follows: a high-definition vehicle-mounted lens for identifying middle and long-distance obstacles comprises a lens cone body, wherein a positive focal power front lens group and a positive focal power rear lens group are sequentially arranged in the lens cone body from an object space to an image space, the positive focal power front lens group consists of a positive focal power first lens, a positive focal power second lens and a negative focal power third lens, the positive focal power first lens is fixed in the lens cone body through an outer clamping ring, the positive focal power rear lens group is a positive focal power fourth lens, and a diaphragm is arranged between the positive focal power front lens group and the positive focal power rear lens group.
The positive focal power first lens is a biconvex lens and is fixed in the lens cone body through an outer pressing ring.
The positive focal power second lens is a meniscus lens, and a first space ring is arranged between the positive focal power first lens and the positive focal power second lens.
The negative focal power third lens is a meniscus lens, the positive focal power fourth lens is a meniscus lens, and a second space ring is arranged between the negative focal power third lens and the positive focal power fourth lens.
The distance from the vertex of the back surface of the positive focal power first lens to the vertex of the front surface of the positive focal power second lens of the positive focal power front lens group is 0.1-0.2 mm, and preferably 0.1 mm.
The distance from the vertex of the rear surface of the positive focal power second lens of the positive focal power front lens group to the vertex of the front surface of the negative focal power third lens is 0.3-0.4 mm, and preferably 0.35 mm.
The distance from the vertex of the rear surface of the negative focal power third lens of the positive focal power front lens group to the vertex of the front surface of the positive focal power fourth lens of the positive focal power rear lens group is 13-14 mm, and 13.5mm is preferable.
The lens parameters are as follows:
the invention has the beneficial effects that: the invention has high resolution, small distortion and good light transmittance, can effectively identify medium and long distance tiny obstacles, provides early warning for the obstacles in front of the vehicle, and provides road condition information for auxiliary driving and automatic driving in advance. In addition, the vehicle-mounted lens system is simple and compact in structure, large in field depth, capable of simultaneously watching remote road condition information in a clear manner, and very suitable for being used for a vehicle-mounted camera system.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic diagram of an optical system according to the present invention;
FIG. 3 is a schematic diagram of MTF (modulation transfer function) of the present invention;
FIG. 4 is a distortion diagram of the present invention;
FIG. 5 is a diagram illustrating relative illumination according to the present invention.
Detailed Description
As shown in fig. 1-5, the high definition vehicle-mounted lens for identifying an intermediate and long distance obstacle includes a lens barrel body S7, a positive power front lens group and a positive power rear lens group are sequentially disposed from an object side to an image side in the lens barrel body S7, the positive power front lens group is composed of a positive power first lens L1, a positive power second lens L2 and a negative power third lens L3, the positive power first lens L1 is fixed in the lens barrel body S7 through an outer clamping ring S5, the positive power rear lens group is a positive power fourth lens L4, and a diaphragm is disposed between the positive power front lens group and the positive power rear lens group.
The positive power first lens L1 is a biconvex lens, and the positive power first lens L1 is fixed in the lens barrel body S7 by an outer pressing ring.
The second lens L2 with positive focal power is a meniscus lens, and a first space ring S6 is arranged between the first lens L1 with positive focal power and the second lens L2 with positive focal power.
The negative power third lens L3 is a meniscus lens, the positive power fourth lens L4 is a meniscus lens, and a second space ring S8 is installed between the negative power third lens L3 and the positive power fourth lens L4.
The distance from the vertex of the back surface of the positive focal power first lens L1 to the vertex of the front surface of the positive focal power second lens L2 of the positive focal power front lens group is 0.1-0.2 mm, and preferably 0.1 mm.
The distance from the vertex of the back surface of the positive focal power second lens L2 of the positive focal power front lens group to the vertex of the front surface of the negative focal power third lens L3 is 0.3-0.4 mm, and preferably 0.35 mm.
The distance from the vertex of the back surface of the negative focal power third lens L3 of the positive focal power front lens group to the vertex of the front surface of the positive focal power fourth lens L4 of the positive focal power rear lens group is 13-14 mm, and 13.5mm is preferable.
Claims (4)
1. The utility model provides a long distance barrier's on-vehicle camera lens of high definition in discernment which characterized in that: the lens barrel comprises a lens barrel body, wherein a positive focal power front lens group and a positive focal power rear lens group are sequentially arranged in the lens barrel body from an object space to an image space, the positive focal power front lens group consists of a positive focal power first lens, a positive focal power second lens and a negative focal power third lens, the positive focal power first lens is fixed in the lens barrel body through an outer press ring, the positive focal power rear lens group is a positive focal power fourth lens, and a diaphragm is arranged between the positive focal power front lens group and the positive focal power rear lens group; the distance from the vertex of the back surface of the positive focal power first lens to the vertex of the front surface of the positive focal power second lens of the positive focal power front lens group is 0.1 mm; the distance from the vertex of the rear surface of the positive focal power second lens of the positive focal power front lens group to the vertex of the front surface of the negative focal power third lens is 0.35 mm; the distance from the vertex of the rear surface of the negative focal power third lens of the positive focal power front lens group to the vertex of the front surface of the positive focal power fourth lens of the positive focal power rear lens group is 13.5 mm; the lens parameters are as follows:
2. the high-definition vehicular lens for identifying the medium-distance obstacles in the claim 1 is characterized in that: the positive focal power first lens is a biconvex lens.
3. The high-definition vehicular lens for identifying the medium-distance obstacles in the claim 1 is characterized in that: the positive focal power second lens is a meniscus lens, and a first space ring is arranged between the positive focal power first lens and the positive focal power second lens.
4. The high-definition vehicular lens for identifying the medium-distance obstacles in the claim 1 is characterized in that: the negative focal power third lens is a meniscus lens, the positive focal power fourth lens is a meniscus lens, and a second space ring is arranged between the negative focal power third lens and the positive focal power fourth lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711475165.4A CN108227137B (en) | 2017-12-29 | 2017-12-29 | High-definition vehicle-mounted lens for identifying middle and long distance obstacles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711475165.4A CN108227137B (en) | 2017-12-29 | 2017-12-29 | High-definition vehicle-mounted lens for identifying middle and long distance obstacles |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108227137A CN108227137A (en) | 2018-06-29 |
| CN108227137B true CN108227137B (en) | 2020-07-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711475165.4A Active CN108227137B (en) | 2017-12-29 | 2017-12-29 | High-definition vehicle-mounted lens for identifying middle and long distance obstacles |
Country Status (1)
| Country | Link |
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| CN (1) | CN108227137B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006091718A (en) * | 2004-09-27 | 2006-04-06 | Pentax Corp | Telephoto lens system |
| TWI494586B (en) * | 2013-09-02 | 2015-08-01 | Ability Opto Electronics Technology Co Ltd | Thin wide-angle four-piece imaging lens group |
| TWI467225B (en) * | 2013-10-29 | 2015-01-01 | Largan Precision Co Ltd | Image capturing lens system, imaging device and mobile terminal |
| TWI589917B (en) * | 2015-03-06 | 2017-07-01 | 先進光電科技股份有限公司 | Optical image capturing system |
| CN106154503A (en) * | 2016-08-26 | 2016-11-23 | 福建福光股份有限公司 | A kind of high-resolution reversed telephoto lens with overlength back focal length and preparation method thereof |
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- 2017-12-29 CN CN201711475165.4A patent/CN108227137B/en active Active
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| CN108227137A (en) | 2018-06-29 |
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Effective date of registration: 20190717 Address after: 473000 No. 366 Xinchen West Road, Nanyang High-tech Zone, Henan Province Applicant after: Nanyang Lida Photoelectric Co., Ltd. Address before: 473000 Nanyang Industrial Road, Henan, No. 508 Applicant before: Lida Optical and Electronic Co., Ltd. |
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