CN109001889B - Athermalization day and night high-definition vehicle-mounted lens - Google Patents
Athermalization day and night high-definition vehicle-mounted lens Download PDFInfo
- Publication number
- CN109001889B CN109001889B CN201811033914.2A CN201811033914A CN109001889B CN 109001889 B CN109001889 B CN 109001889B CN 201811033914 A CN201811033914 A CN 201811033914A CN 109001889 B CN109001889 B CN 109001889B
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- 238000003384 imaging method Methods 0.000 claims abstract description 4
- 230000003287 optical effect Effects 0.000 claims abstract 2
- 230000005499 meniscus Effects 0.000 claims description 7
- 230000000694 effects Effects 0.000 abstract description 2
- 238000002834 transmittance Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 6
- 239000005304 optical glass Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000012634 optical imaging Methods 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
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/0055—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras employing a special optical element
- G02B13/006—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras employing a special optical element at least one element being a compound optical element, e.g. cemented elements
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lenses (AREA)
Abstract
The invention discloses a day and night dual-purpose high-definition vehicle-mounted lens without heat, which sequentially comprises a front lens group with negative focal power, a rear lens group with positive focal power, an optical filter and an imaging surface (IMA), wherein the front lens group with negative focal power consists of a first lens with positive focal power, a second lens with positive focal power, a third lens with negative focal power, a fourth lens with positive focal power and a fifth lens with negative focal power, and the rear lens group with positive focal power consists of a sixth lens with positive focal power and a seventh lens with negative focal power. The vehicle-mounted lens system has the advantages of high resolution, good thermal stability, good light transmittance and day and night confocal, can effectively identify a remote target, provides early warning for the target in front of a vehicle in advance, provides road condition information for a driving system, and is compact in structure, good in shockproof effect and 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 day-night dual-purpose high-definition vehicle-mounted lens without heat.
Background
In recent years, intelligent automobiles become a research hotspot in the automobile industry, and auxiliary driving and automatic driving are dominant directions of intelligent automobiles. The intelligent automobile is required to realize auxiliary driving and automatic driving, and the target recognition system based on the high-definition vehicle-mounted lens is indispensable, and because the application environment of the automobile is complex and changeable and has higher safety requirements, the intelligent automobile has high-quality image quality for the vehicle-mounted lens of the vehicle-mounted camera system, and also has stronger environmental adaptability requirements for ensuring high-quality images under different illumination conditions in daytime and at night.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a day-night confocal athermalization day-night high-definition vehicle-mounted lens with excellent thermal stability.
In order to achieve the above design purpose, the technical scheme adopted by the invention is as follows: the utility model provides a dual-purpose high definition on-vehicle camera lens of no heat ization day night, is from the object side to the image side, includes preceding lens group, the back lens group, light filter and the imaging surface (IMA) of positive focal power in proper order, preceding lens group of negative focal power comprises positive focal power's first lens, positive focal power's second lens, negative focal power's third lens, positive focal power's fourth lens and negative focal power's fifth lens, positive focal power's back lens group comprises positive focal power's sixth lens and negative focal power's seventh lens, positive focal power's first lens is meniscus lens, positive focal power's second lens is biconcave lens, negative focal power's third lens is biconcave lens, negative focal power's fifth lens biconcave lens, positive focal power's sixth lens is biconvex lens, negative focal power's seventh lens is meniscus lens, positive focal power's second lens and negative focal power's third lens are biconvex lens, positive focal power's second lens and negative focal power's fourth lens are biconvex lens.
The diaphragm is positioned between the front lens group with negative focal power and the rear lens group with positive focal power.
The distance from the vertex of the rear surface of the first lens with positive focal power to the vertex of the front surface of the first cemented lens is 0.15-0.25 mm, preferably 0.2mm.
The distance from the vertex of the rear surface of the first cemented lens to the vertex of the front surface of the second cemented lens is 0.52-0.62 mm, preferably 0.57mm.
The distance from the vertex of the rear surface of the second cemented lens to the vertex of the front surface of the sixth lens with positive power is 0.95-1.05 mm, preferably 1mm.
The distance from the vertex of the rear surface of the sixth lens with positive focal power to the vertex of the front surface of the seventh lens with negative focal power is 6.45-6.55 mm, preferably 6.5mm.
The invention has the beneficial effects that: according to the day and night dual-purpose high-definition vehicle-mounted lens without heat, targets within a distance of 50-200 meters can be identified, and the lens can be matched with other wide-angle vehicle-mounted lenses and vehicle-mounted radars for use, so that the identification capability of a vehicle on remote targets is improved. The vehicle-mounted lens system has the advantages of high resolution, good thermal stability, good light transmittance and day and night confocal, can effectively identify a remote target, provides early warning for the target in front of a vehicle in advance, provides road condition information for a driving system, and is compact in structure, good in shockproof effect and very suitable for a vehicle-mounted camera system.
Drawings
FIG. 1 is a diagram of an optical glass without light rays according to the present invention;
FIG. 2 is a schematic diagram showing an optical glass with light rays according to the present invention;
FIG. 3 is a schematic diagram of the visible MTF (modulation transfer function) of the present invention;
FIG. 4 is a schematic diagram of the infrared light MTF (modulation transfer function) of the present invention;
FIG. 5 is a schematic diagram of the visible MTF (modulation transfer function) of the present invention at low temperature;
fig. 6 is a schematic diagram of the MTF (modulation transfer function) of visible light at a high temperature state according to the present invention.
Detailed Description
The following detailed description of specific embodiments of the invention refers to the accompanying drawings. As shown in fig. 1-6: the utility model provides a dual-purpose high definition on-vehicle camera lens of no heat ization day night, is from the object side to the image side, includes preceding lens group 1 of negative focal power, back lens group 2 of positive focal power, light filter 3 and imaging surface (IMA) 4 in proper order, preceding lens group 1 of negative focal power is by positive focal power's first lens L1, positive focal power's second lens L2, negative focal power's third lens L3, positive focal power's fourth lens L4 and negative focal power's fifth lens L5 constitute, positive focal power's back lens group 2 comprises positive focal power's sixth lens L6 and negative focal power's seventh lens L7, positive focal power's first lens L1 is the meniscus lens, positive focal power's second lens L2 is the biconvex lens, negative focal power's third lens L3 is the biconcave lens, positive focal power's fourth lens L4 is the lens, negative focal power's fifth lens L5 biconcave lens, positive focal power's sixth lens L6 is the biconvex lens, negative focal power's fourth lens L7 is the biconvex lens, negative focal power's L4 is the fourth focal power's lens L01.
The lens parameters are as follows:
the preferred values of the relevant parameters of each lens are shown in the table:
。
the diaphragm is positioned between the front lens group with negative focal power and the rear lens group with positive focal power.
The distance from the vertex of the rear surface of the first lens L1 with positive focal power to the vertex of the front surface of the first cemented lens B01 is 0.15-0.25 mm, preferably 0.2mm.
The distance from the vertex of the rear surface of the first cemented lens B01 to the vertex of the front surface of the second cemented lens B02 is 0.52-0.62 mm, preferably 0.57mm.
The distance from the vertex of the rear surface of the second cemented lens B02 to the vertex of the front surface of the sixth lens L6 with positive power is 0.95-1.05 mm, preferably 1mm.
The distance from the vertex of the rear surface of the sixth lens L6 with positive focal power to the vertex of the front surface of the seventh lens L7 with negative focal power is 6.45-6.55 mm, preferably 6.5mm.
Claims (6)
1. A non-thermal day and night dual-purpose high-definition vehicle-mounted lens is characterized in that: the lens comprises a front lens group with negative focal power, a rear lens group with positive focal power, an optical filter and an imaging surface (IMA), wherein the front lens group with negative focal power consists of a first lens with positive focal power, a second lens with positive focal power, a third lens with negative focal power, a fourth lens with positive focal power and a fifth lens with negative focal power, the rear lens group with positive focal power consists of a sixth lens with positive focal power and a seventh lens with negative focal power, the first lens with positive focal power is a meniscus lens, the second lens with positive focal power is a biconvex lens, the third lens with negative focal power is a biconcave lens, the fourth lens with positive focal power is a biconcave lens, the sixth lens with positive focal power is a meniscus lens, the third lens with positive focal power is a meniscus lens with negative focal power, the fourth lens with positive focal power is a meniscus lens with positive focal power, and the fourth lens with negative focal power is a biconvex lens with positive focal power;
the parameters of each lens are as follows
2. The athermalized day-night dual-purpose high-definition vehicle-mounted lens according to claim 1 is characterized in that: and a diaphragm is arranged between the front lens group with negative focal power and the rear lens group with positive focal power.
3. The athermalized day-night dual-purpose high-definition vehicle-mounted lens according to claim 1 is characterized in that: the distance from the vertex of the rear surface of the first lens with positive focal power to the vertex of the front surface of the first cemented lens is 0.15-0.25 mm.
4. The athermalized day-night dual-purpose high-definition vehicle-mounted lens according to claim 1 is characterized in that: the distance from the vertex of the rear surface of the first cemented lens to the vertex of the front surface of the second cemented lens is 0.52-0.62 mm.
5. The athermalized day-night dual-purpose high-definition vehicle-mounted lens according to claim 1 is characterized in that: the distance from the vertex of the rear surface of the second cemented lens to the vertex of the front surface of the sixth lens with positive power is 0.95-1.05 mm.
6. The athermalized day-night dual-purpose high-definition vehicle-mounted lens according to claim 1 is characterized in that: the distance from the vertex of the rear surface of the sixth lens with positive focal power to the vertex of the front surface of the seventh lens with negative focal power is 6.45-6.55 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811033914.2A CN109001889B (en) | 2018-09-05 | 2018-09-05 | Athermalization day and night high-definition vehicle-mounted lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811033914.2A CN109001889B (en) | 2018-09-05 | 2018-09-05 | Athermalization day and night high-definition vehicle-mounted lens |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109001889A CN109001889A (en) | 2018-12-14 |
| CN109001889B true CN109001889B (en) | 2023-12-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811033914.2A Active CN109001889B (en) | 2018-09-05 | 2018-09-05 | Athermalization day and night high-definition vehicle-mounted lens |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110262002B (en) * | 2019-06-29 | 2021-07-30 | 瑞声光学解决方案私人有限公司 | Image pickup optical lens |
| CN112698475B (en) * | 2020-05-22 | 2022-09-16 | 南阳利达光电有限公司 | High-definition pinhole lens for security field |
| TWI721904B (en) * | 2020-06-10 | 2021-03-11 | 大立光電股份有限公司 | Imaging lens assembly, image capturing unit and electronic device |
| CN112649948B (en) * | 2020-07-28 | 2022-09-16 | 福建福光股份有限公司 | Long-focus athermalized day-and-night low-sensitivity lens and working method thereof |
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| JP2000028919A (en) * | 1998-07-09 | 2000-01-28 | Mamiya Op Co Ltd | Middle telephotographic lens |
| JP2001183581A (en) * | 1999-12-24 | 2001-07-06 | Mamiya Op Co Ltd | Medium telephoto lens |
| CN104280860A (en) * | 2014-09-18 | 2015-01-14 | 利达光电股份有限公司 | High-resolution camera lens |
| CN106680967A (en) * | 2015-11-06 | 2017-05-17 | 先进光电科技股份有限公司 | Optical imaging system |
| CN107728297A (en) * | 2017-10-25 | 2018-02-23 | 东莞市宇瞳光学科技股份有限公司 | A kind of wide working distance optical system of ultra-low distortion |
| CN209433107U (en) * | 2018-09-05 | 2019-09-24 | 南阳利达光电有限公司 | A kind of no thermalization day and night high definition on-vehicle lens |
-
2018
- 2018-09-05 CN CN201811033914.2A patent/CN109001889B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000028919A (en) * | 1998-07-09 | 2000-01-28 | Mamiya Op Co Ltd | Middle telephotographic lens |
| JP2001183581A (en) * | 1999-12-24 | 2001-07-06 | Mamiya Op Co Ltd | Medium telephoto lens |
| CN104280860A (en) * | 2014-09-18 | 2015-01-14 | 利达光电股份有限公司 | High-resolution camera lens |
| CN106680967A (en) * | 2015-11-06 | 2017-05-17 | 先进光电科技股份有限公司 | Optical imaging system |
| CN107728297A (en) * | 2017-10-25 | 2018-02-23 | 东莞市宇瞳光学科技股份有限公司 | A kind of wide working distance optical system of ultra-low distortion |
| CN209433107U (en) * | 2018-09-05 | 2019-09-24 | 南阳利达光电有限公司 | A kind of no thermalization day and night high definition on-vehicle lens |
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| CN109001889A (en) | 2018-12-14 |
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Effective date of registration: 20190712 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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