CN108957705B - Athermalization ultra-wide-angle high-definition vehicle-mounted lens - Google Patents
Athermalization ultra-wide-angle high-definition vehicle-mounted lens Download PDFInfo
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- CN108957705B CN108957705B CN201811034734.6A CN201811034734A CN108957705B CN 108957705 B CN108957705 B CN 108957705B CN 201811034734 A CN201811034734 A CN 201811034734A CN 108957705 B CN108957705 B CN 108957705B
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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
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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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- 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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- 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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lenses (AREA)
Abstract
The invention discloses a athermalized ultra-wide-angle high-definition vehicle-mounted lens, which sequentially comprises a front lens group with negative focal power, a rear lens group with positive focal power, an optical filter (ICR) and an imaging surface (IMA) from the object side to the image side, wherein the front lens group with negative focal power consists of a first lens with negative focal power, a second lens with negative focal power and a third lens with positive focal power, the rear lens group with positive focal power consists of a fourth lens with positive focal power, a fifth lens with negative focal power and a sixth lens with positive focal power, the fifth lens with negative focal power and the sixth lens with positive focal power are glued into a first gluing lens, and the first lens with negative focal power and the second lens with negative focal power are right meniscus lenses. The invention has high resolution, good thermal stability and large angle of view, can monitor targets in a larger range, and can stably work in a larger temperature range. In addition, the vehicle-mounted lens system is compact in structure, good in shockproof effect and very suitable for being used in a vehicle-mounted camera system.
Description
Technical Field
The invention relates to the technical field of optical imaging equipment, in particular to a athermalized ultra-wide-angle high-definition vehicle-mounted lens.
Background
In recent years, driving safety is increasingly paid attention to, and various imaging devices for assisting driving are developed, wherein 360-degree panoramic monitoring devices are focused on monitoring the surrounding environment of a vehicle from all directions, so that the driving safety of the vehicle is ensured. The angle of view of the lens required for 360 deg. panoramic detection is required to be large, at 180 deg. or even greater.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides the athermalized ultra-wide-angle high-definition vehicle-mounted lens which has excellent thermal stability and can keep higher imaging quality within the temperature range of minus 30-95 ℃ and be used for 360-degree panoramic vehicle-mounted.
In order to achieve the above design purpose, the technical scheme adopted by the invention is as follows: the utility model provides a no-thermalization super wide-angle high definition on-vehicle camera lens, is from the object side to the image side, includes preceding lens group of negative focal power, back lens group of positive focal power, light filter (ICR) and imaging plane (IMA) in proper order, preceding lens group of negative focal power comprises first lens of negative focal power and the second lens of negative focal power and the third lens of positive focal power, back lens group of positive focal power comprises fourth lens of positive focal power, the fifth lens of negative focal power and the sixth lens of positive focal power are glued and are first cemented lens, the first lens of negative focal power and the second lens of negative focal power are right meniscus lens, the third lens of positive focal power is biconvex lens, the fourth lens of positive focal power is left meniscus lens, the fifth lens of negative focal power is biconcave lens, the sixth lens of positive focal power is 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 second lens with negative focal power and the fourth lens with positive focal power are plastic even-order aspheric lenses, and the surface arc height z is calculated according to the following formula
Wherein r is the surface radius, and k is the quadratic coefficient; alpha i Is a high order term coefficient.
The distance from the vertex of the rear surface of the first lens with negative focal power to the vertex of the front surface of the second lens with negative focal power is 1.95-2.05 mm, preferably 2mm.
The distance from the rear surface vertex of the second lens of negative power to the front surface vertex of the third lens of positive power is 1.95-2.05 mm, preferably 2mm.
The distance from the rear surface vertex of the third lens of positive power to the front surface vertex of the fourth lens of positive power is 0.4 to 0.5mm, preferably 0.4mm.
The distance from the rear surface vertex of the fourth lens of positive power to the front surface vertex of the first cemented lens is 0.3 to 0.4mm, preferably 0.34mm.
The invention has the beneficial effects that: according to the athermalization ultra-wide-angle high-definition vehicle-mounted lens designed according to the scheme, higher imaging quality can be kept within the temperature range of minus 30-95 ℃, and the athermalization ultra-wide-angle high-definition vehicle-mounted lens can be used for 360-degree panoramic vehicle-mounted imaging equipment, and compared with the prior art, the athermalization ultra-wide-angle high-definition vehicle-mounted lens has the following beneficial effects: the invention has high resolution, good thermal stability and large angle of view, can monitor targets in a larger range, and can stably work in a larger temperature range. In addition, the vehicle-mounted lens system is compact in structure, good in shockproof effect and very suitable for being used in 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 MTF (modulation transfer function) of visible light at normal temperature according to the present invention;
FIG. 4 is a schematic diagram of the MTF (modulation transfer function) of visible light at low temperature according to the present invention;
fig. 5 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. 1-5: the utility model provides a no-thermalization super wide-angle high definition on-vehicle camera lens, 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 (ICR) 3 and imaging plane (IMA) 4 in proper order, preceding lens group 1 of negative focal power comprises first lens L1 of negative focal power and the second lens L2 of negative focal power and the third lens L3 of positive focal power, back lens group 2 of positive focal power comprises fourth lens L4 of positive focal power, the fifth lens L5 of negative focal power and the sixth lens L6 of positive focal power are first cemented lens B01, the first lens L1 of negative focal power and the second lens L2 of negative focal power are right meniscus lens, the third lens L3 of positive focal power is biconvex lens, the fourth lens L4 of positive focal power is left meniscus lens, the fifth lens L5 of negative focal power is biconcave lens L6.
The lens parameters are as follows:
the diaphragm is located between a front lens group 1 of negative power and a rear lens group 2 of positive power.
The second lens L2 with negative focal power and the fourth lens L4 with positive focal power are plastic even aspherical lenses, and the surface arc height z is calculated according to the following formula:
wherein r is the surface radius, and k is the quadratic coefficient; alpha i Is a high order term coefficient.
The preferred values of the relevant parameters for each lens are shown in the table:
the distance from the vertex of the rear surface of the first lens L1 with negative focal power to the vertex of the front surface of the second lens L2 with negative focal power is 1.95-2.05 mm, preferably 2mm.
The distance from the rear surface vertex of the second lens L2 of negative power to the front surface vertex of the third lens L3 of positive power is 1.95-2.05 mm, preferably 2mm.
The distance from the rear surface vertex of the third lens L3 of positive power to the front surface vertex of the fourth lens L4 of positive power is 0.4 to 0.5mm, preferably 0.4mm.
The distance from the rear surface vertex of the fourth lens L4 of positive power to the front surface vertex of the first cemented lens BO1 is 0.3 to 0.4mm, preferably 0.34mm.
The preferred values of the higher order coefficients of the second lens L2 with negative optical power and the fourth lens L4 with positive optical power are shown in the table:
Claims (7)
1. the utility model provides a no super wide-angle high definition on-vehicle camera lens of thermalization which 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 (ICR) and an imaging surface (IMA) in sequence from an object side to an image side, wherein the front lens group with negative focal power consists of a first lens with negative focal power, a second lens with negative focal power and a third lens with positive focal power, the rear lens group with positive focal power consists of a fourth lens with positive focal power, a fifth lens with negative focal power and a sixth lens with positive focal power, the fifth lens with negative focal power and the sixth lens with positive focal power are glued into a first gluing lens, the first lens with negative focal power and the second lens with negative focal power are both meniscus lenses with convex surfaces facing the object side, the third lens with positive focal power is a biconvex lens, the fourth lens with positive focal power is a meniscus lens facing the image side, the fifth lens with negative focal power is a biconcave lens, and the sixth lens with positive focal power is a biconvex lens; the second lens with negative focal power and the fourth lens with positive focal power are plastic even aspherical lenses; the distance from the vertex of the rear surface of the first lens with negative focal power to the vertex of the front surface of the second lens with negative focal power is 1.95-2.05 mm; the distance from the vertex of the rear surface of the second lens with negative focal power to the vertex of the front surface of the third lens with positive focal power is 1.95-2.05 mm; the distance from the vertex of the rear surface of the third lens with positive focal power to the vertex of the front surface of the fourth lens with positive focal power is 0.4-0.5 mm; the distance from the vertex of the rear surface of the fourth lens with positive focal power to the vertex of the front surface of the first cemented lens is 0.3-0.4 mm; the total number of lenses of the lens is 6, and the lens parameters are as follows:
2. the athermalized ultra-wide-angle high-definition vehicle-mounted lens according to claim 1, wherein the athermalized ultra-wide-angle high-definition vehicle-mounted lens is characterized in that: the diaphragm is positioned between the front lens group of negative focal power and the rear lens group of positive focal power.
3. The athermalized ultra-wide-angle high-definition vehicle-mounted lens according to claim 1, wherein the athermalized ultra-wide-angle high-definition vehicle-mounted lens is characterized in that: the second lens with negative focal power and the fourth lens with positive focal power are plastic even aspherical lenses, and the surface arc height z is calculated according to the following formula:
wherein r is the surface radius, and k is the quadratic coefficient; alpha is the higher order term coefficient.
4. The athermalized ultra-wide-angle high-definition vehicle-mounted lens according to claim 1, wherein the athermalized ultra-wide-angle high-definition vehicle-mounted lens is characterized in that: the distance from the vertex of the rear surface of the first lens with negative focal power to the vertex of the front surface of the second lens with negative focal power is 2mm.
5. The athermalized ultra-wide-angle high-definition vehicle-mounted lens according to claim 1, wherein the athermalized ultra-wide-angle high-definition vehicle-mounted lens is characterized in that: the distance from the rear surface vertex of the second lens of negative power to the front surface vertex of the third lens of positive power is 2mm.
6. The athermalized ultra-wide-angle high-definition vehicle-mounted lens according to claim 1, wherein the athermalized ultra-wide-angle high-definition vehicle-mounted lens is characterized in that: the distance from the rear surface vertex of the third lens of positive power to the front surface vertex of the fourth lens of positive power is 0.4mm.
7. The athermalized ultra-wide-angle high-definition vehicle-mounted lens according to claim 1, wherein the athermalized ultra-wide-angle high-definition vehicle-mounted lens is characterized in that: the distance from the rear surface vertex of the fourth lens of positive power to the front surface vertex of the first cemented lens is 0.34mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811034734.6A CN108957705B (en) | 2018-09-05 | 2018-09-05 | Athermalization ultra-wide-angle high-definition vehicle-mounted lens |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811034734.6A CN108957705B (en) | 2018-09-05 | 2018-09-05 | Athermalization ultra-wide-angle high-definition vehicle-mounted lens |
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| Publication Number | Publication Date |
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| CN108957705A CN108957705A (en) | 2018-12-07 |
| CN108957705B true CN108957705B (en) | 2023-06-20 |
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| CN201811034734.6A Active CN108957705B (en) | 2018-09-05 | 2018-09-05 | Athermalization ultra-wide-angle high-definition vehicle-mounted lens |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI823882B (en) * | 2018-12-14 | 2023-12-01 | 光芒光學股份有限公司 | Lens and fabrication method thereof |
| CN110333591B (en) * | 2019-07-23 | 2023-08-15 | 福建福光天瞳光学有限公司 | 0.95mm vehicle-mounted high-definition looking-around optical system and imaging method thereof |
| CN114035307B (en) * | 2021-10-25 | 2023-03-31 | 福建福光股份有限公司 | 1.6mm ultra-wide angle six-piece optical lens |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101614864A (en) * | 2009-06-09 | 2009-12-30 | 宁波舜宇车载光学技术有限公司 | Super wide angle mega pixel vehicle-mounted lens |
| CN201438236U (en) * | 2007-10-05 | 2010-04-14 | 富士能株式会社 | Camera shooting lens and camera shooting device |
| CN107577030A (en) * | 2016-07-05 | 2018-01-12 | 信泰光学(深圳)有限公司 | Wide-angle lens |
-
2018
- 2018-09-05 CN CN201811034734.6A patent/CN108957705B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201438236U (en) * | 2007-10-05 | 2010-04-14 | 富士能株式会社 | Camera shooting lens and camera shooting device |
| CN101614864A (en) * | 2009-06-09 | 2009-12-30 | 宁波舜宇车载光学技术有限公司 | Super wide angle mega pixel vehicle-mounted lens |
| CN107577030A (en) * | 2016-07-05 | 2018-01-12 | 信泰光学(深圳)有限公司 | Wide-angle lens |
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| CN108957705A (en) | 2018-12-07 |
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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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