CN115343828A - Vehicle-mounted monitoring lens - Google Patents
Vehicle-mounted monitoring lens Download PDFInfo
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- CN115343828A CN115343828A CN202210973638.8A CN202210973638A CN115343828A CN 115343828 A CN115343828 A CN 115343828A CN 202210973638 A CN202210973638 A CN 202210973638A CN 115343828 A CN115343828 A CN 115343828A
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 31
- 230000003287 optical effect Effects 0.000 claims abstract description 24
- 125000005647 linker group Chemical group 0.000 claims description 4
- 230000005499 meniscus Effects 0.000 claims description 4
- 238000005286 illumination Methods 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000003384 imaging method Methods 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
- 238000000848 angular dependent Auger electron spectroscopy Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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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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- 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
- G02B13/008—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras designed for infrared light
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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
- G02B13/14—Optical objectives specially designed for the purposes specified below for use with infrared or ultraviolet radiation
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- Optics & Photonics (AREA)
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Abstract
The invention relates to the technical field of lenses, in particular to a vehicle-mounted monitoring lens which comprises a first lens, a second lens, a third lens, a diaphragm, a fourth lens, a fifth lens and a sixth lens which are sequentially arranged along the incident direction of light rays, and a five-group six-piece structure is adopted. The optical system adopts the structure that the MTF value of the central view field is more than 0.3 at 220lp/mm, the MTF values of the edge view fields are all more than 0.3 at 170lp/mm, the resolution can reach 400 ten thousand pixels at most, the maximum support is 1/2.7 inches of a chip, the Fno is 1.8, the infrared defocusing amount is 0.01mm, the relative illumination is more than 40%, the optical back focus is more than 5mm, the total optical length is less than 23mm, the maximum view field can reach 141 degrees, and the monitoring of large-range high definition is realized.
Description
Technical Field
The invention relates to the technical field of lenses, in particular to a vehicle-mounted monitoring lens.
Background
With the continuous and vigorous development of the automobile industry, the vehicle-mounted camera serves as an 'automatic driving eye', is a core sensing device in the field of automatic driving of automobiles, and is continuously heated in development. The vehicle-mounted camera is widely applied in the field of automobiles, and gradually extends from early use for driving recording, backing images and parking around vision to behavior recognition and ADAS auxiliary driving in an intelligent cockpit, so that application scenes are enriched day by day.
Most of the monitoring lenses in the current market cannot give consideration to the characteristics of small size, high resolution and full-day clear imaging, the purposes of all-weather high-definition monitoring and detection are difficult to realize, and the resolution of million pixels can only be achieved generally.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: a vehicle-mounted monitoring lens is provided.
In order to solve the technical problems, the invention adopts the technical scheme that:
a vehicle-mounted monitoring lens comprises a first lens, a second lens, a third lens, a diaphragm, a fourth lens, a fifth lens and a sixth lens which are sequentially arranged along the incident direction of light rays; the first lens is a meniscus lens, the second lens is a biconcave lens, the third lens is a biconvex lens, the fourth lens and the fifth lens form a sealed bonding group, and the sixth lens is a biconvex lens;
the air space between the first lens and the second lens ranges from 2mm to 3mm, the air space between the second lens and the third lens ranges from 1mm to 2mm, the air space between the third lens and the diaphragm ranges from 1mm to 2mm, the air gap between the diaphragm and the fourth lens ranges from 2mm to 3mm, and the air space between the fifth lens and the sixth lens ranges from 0mm to 0.5mm.
The invention has the beneficial effects that:
the invention provides a vehicle-mounted monitoring lens which comprises a first lens, a second lens, a third lens, a diaphragm, a fourth lens, a fifth lens and a sixth lens which are sequentially arranged along the incident direction of light rays, wherein a five-group six-piece structure is adopted. The optical system adopts the structure that the MTF value of the central view field is more than 0.3 at 220lp/mm, the MTF values of the edge view fields are all more than 0.3 at 170lp/mm, the resolution can reach 400 ten thousand pixels at most, the maximum support is 1/2.7 inches of a chip, the Fno is 1.8, the infrared defocusing amount is 0.01mm, the relative illumination is more than 40%, the optical back focus is more than 5mm, the total optical length is less than 23mm, the maximum view field can reach 141 degrees, and the monitoring of large-range high definition is realized.
Drawings
FIG. 1 is a schematic view of a lens structure of a vehicle-mounted monitoring lens according to the present invention;
FIG. 2 is a visible light MTF graph of a vehicle-mounted monitoring lens according to the present invention;
FIG. 3 is a diffuse speckle pattern of an in-vehicle monitoring lens of the present invention;
FIG. 4 is a distortion diagram of an in-vehicle monitoring lens of the present invention;
FIG. 5 is an infrared MTF plot of a vehicle mounted monitoring lens of the present invention;
description of reference numerals:
1. a first lens; 2. a second lens; 3. a third lens; 4. a fourth lens; 5. a fifth lens; 6. and a sixth lens.
Detailed Description
In order to explain technical contents, achieved objects, and effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.
Referring to fig. 1 to 5, a vehicle-mounted monitoring lens provided by the present invention includes a first lens, a second lens, a third lens, a diaphragm, a fourth lens, a fifth lens, and a sixth lens, which are sequentially disposed along a light incident direction; the first lens is a meniscus lens, the second lens is a biconcave lens, the third lens is a biconvex lens, the fourth lens and the fifth lens form a sealed bonding group, and the sixth lens is a biconvex lens;
the air space between the first lens and the second lens ranges from 2mm to 3mm, the air space between the second lens and the third lens ranges from 1mm to 2mm, the air space between the third lens and the diaphragm ranges from 1mm to 2mm, the air gap between the diaphragm and the fourth lens ranges from 2mm to 3mm, and the air space between the fifth lens and the sixth lens ranges from 0mm to 0.5mm.
The invention has the beneficial effects that: the invention provides a vehicle-mounted monitoring lens which comprises a first lens, a second lens, a third lens, a diaphragm, a fourth lens, a fifth lens and a sixth lens which are sequentially arranged along the incident direction of light rays, wherein a five-group six-piece structure is adopted. The optical system adopts the structure that the MTF value of the central view field is more than 0.3 at 220lp/mm, the MTF values of the edge view fields are all more than 0.3 at 170lp/mm, the resolution can reach 400 ten thousand pixels at most, the maximum support is 1/2.7 inches of a chip, the Fno is 1.8, the infrared defocusing amount is 0.01mm, the relative illumination is more than 40%, the optical back focus is more than 5mm, the total optical length is less than 23mm, the maximum view field can reach 141 degrees, and the monitoring of large-range high definition is realized.
Further, the first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens further satisfy the following optical conditions:
1.8<n1<1.9，20<v1<30；
1.4<n2<1.5，60<v2<70；
2.0<n3<2.1，20<v3<30；
1.5<n4<1.6，60<v4<70；
2.0<n5<2.1，10<v5<20；
1.5<n6<1.6，60<v6<70；
wherein n1-n16 are refractive indexes of the first lens and the sixth lens in sequence, and v1-v6 are abbe coefficients of the first lens and the sixth lens in sequence.
Further, the first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens further satisfy the following optical conditions:
the curvature radius range of the side surface of the first lens, which is far away from the second lens, is 10-20, and the curvature radius range of the side surface of the first lens, which is close to the second lens, is 4-10;
the curvature radius range of the side surface of the second lens far away from the third lens is-10 to-20, and the curvature radius range of the side surface of the second lens close to the third lens is 3 to 10;
the curvature radius range of the side surface of the third lens, which is far away from the fourth lens, is 0-10, and the curvature radius range of the side surface of the third lens, which is close to the fourth lens, is-30 to-40;
the curvature radius range of the side surface of the fourth lens far away from the fifth lens is 20-30, and the curvature radius range of the side surface of the fourth lens close to the fifth lens is-3 to-5;
the curvature radius range of the side surface of the fifth lens far away from the sixth lens is-3 to-5, and the curvature radius range of the side surface of the fifth lens near the sixth lens is 0 to-10;
the curvature radius range of the side surface of the sixth lens, which is close to the fifth lens, is 10-20, and the curvature radius range of the side surface of the sixth lens, which is far away from the fifth lens, is-20-30.
Further, the first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens further satisfy the following optical conditions:
the central thickness range of the first lens is 0-1 mm;
the central thickness range of the second lens is 0-1 mm;
the central thickness range of the third lens is 5 mm-6 mm;
the central thickness range of the fourth lens is 2 mm-3 mm;
the central thickness range of the fifth lens is 0-1 mm;
the central thickness range of the sixth lens is 1 mm-2 mm.
Further, the combined focal length of the first lens, the second lens, the third lens, the diaphragm, the fourth lens, the fifth lens and the sixth lens is 3.05mm, and the total optical length of the vehicle-mounted monitoring lens is smaller than 23mm.
Referring to fig. 1 to 5, a first embodiment of the present invention is:
the invention provides a vehicle-mounted monitoring lens which comprises a first lens 1, a second lens 2, a third lens 3, a diaphragm, a fourth lens 4, a fifth lens 5 and a sixth lens 6 which are sequentially arranged along the incident direction of light rays; the first lens is a meniscus lens, the second lens is a biconcave lens, the third lens is a biconvex lens, the fourth lens and the fifth lens form a sealed bonding group, and the sixth lens is a biconvex lens;
the air space between the first lens and the second lens ranges from 2mm to 3mm, the air space between the second lens and the third lens ranges from 1mm to 2mm, the air space between the third lens and the diaphragm ranges from 1mm to 2mm, the air gap between the diaphragm and the fourth lens ranges from 2mm to 3mm, and the air space between the fifth lens and the sixth lens ranges from 0mm to 0.5mm.
In this embodiment, the first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens further satisfy the following optical conditions:
1.8-n 1-9-20-n 1-30; the curvature radius range of the side surface (S1) of the first lens, which is far away from the second lens, is 10-20, and the curvature radius range of the side surface (S2) of the first lens, which is close to the second lens, is 4-10; the central thickness range of the first lens is 0-1 mm;
1.4-n 2-n 1.5-60-n 2-n 70; the curvature radius range of the side surface (S3) of the second lens far away from the third lens is-10 to-20, and the curvature radius range of the side surface (S4) of the second lens close to the third lens is 3 to 10; the central thickness range of the second lens is 0-1 mm;
2.0-n 3-n 2.1-20-n 3-n 30; the curvature radius range of the side surface (S5) of the third lens far away from the fourth lens is 0-10, and the curvature radius range of the side surface (S6) of the third lens near the fourth lens is-30-40; the central thickness range of the third lens is 5 mm-6 mm;
1.5-n 4-n 1.6-60-n 4-n 70; the curvature radius range of the side surface (S9) of the fourth lens far away from the fifth lens is 20-30, and the curvature radius range of the side surface (S10) of the fourth lens near the fifth lens is-3-5; the central thickness range of the fourth lens is 2 mm-3 mm;
2.0-n 5-n 2.1-10-n 5-n 20; the curvature radius range of the side surface (S10) of the fifth lens far away from the sixth lens is-3 to-5, and the curvature radius range of the side surface (S11) of the fifth lens near the sixth lens is 0 to-10; the central thickness range of the fifth lens is 0 mm-1 mm;
1.5-n 6-1.6-60-n 6-70; the curvature radius range of the side surface (S12) of the sixth lens, which is close to the fifth lens, is 10-20, and the curvature radius range of the side surface (S13) of the sixth lens, which is far away from the fifth lens, is-20-30. The central thickness range of the sixth lens is 1 mm-2 mm.
Wherein n1-n16 are refractive indexes of the first lens and the sixth lens in sequence, and v1-v6 are abbe coefficients of the first lens and the sixth lens in sequence.
In this embodiment, a combined focal length of the first lens, the second lens, the third lens, the diaphragm, the fourth lens, the fifth lens, and the sixth lens is 3.05mm, and an optical total length of the vehicle-mounted monitoring lens is less than 23mm.
The invention provides a vehicle-mounted monitoring lens which adopts a five-group six-piece structure. The optical system adopts the structure that the MTF value of the central view field is more than 0.3 at 220lp/mm, the MTF values of the edge view fields are all more than 0.3 at 170lp/mm, the resolution can reach 400 ten thousand pixels at most, the maximum support is 1/2.7 inches of a chip, the Fno is 1.8, the infrared defocusing amount is 0.01mm, the relative illumination is more than 40%, the optical back focus is more than 5mm, the total optical length is less than 23mm, the maximum view field can reach 141 degrees, and the monitoring of large-range high definition is realized.
In the embodiment, the optical total length is 23mm, fno1.8, the maximum field of view is 141 degrees, the relative illumination is 40 percent, and the optical total length is less than 23mm.
The specific experimental data are as follows:
compared with the prior art, the invention has the following advantages:
the vehicle-mounted monitoring lens provided by the invention adopts a five-group six-piece structure, and the resolution can reach 400 ten thousand pixels. Night low-light imaging can be realized. The picture can be free from blurring under the severe environment of-40 to 85 ℃. Can better eliminate ghost and reach the level of mass production.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to the related technical fields, are included in the scope of the present invention.
Claims (5)
1. A vehicle-mounted monitoring lens is characterized by comprising a first lens, a second lens, a third lens, a diaphragm, a fourth lens, a fifth lens and a sixth lens which are sequentially arranged along the incident direction of light rays; the first lens is a meniscus lens, the second lens is a biconcave lens, the third lens is a biconvex lens, the fourth lens and the fifth lens form a sealed bonding group, and the sixth lens is a biconvex lens;
the air space between the first lens and the second lens ranges from 2mm to 3mm, the air space between the second lens and the third lens ranges from 1mm to 2mm, the air space between the third lens and the diaphragm ranges from 1mm to 2mm, the air gap between the diaphragm and the fourth lens ranges from 2mm to 3mm, and the air space between the fifth lens and the sixth lens ranges from 0mm to 0.5mm.
2. The vehicle-mounted monitoring lens according to claim 1, wherein the first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens further satisfy the following optical conditions:
1.8<n1<1.9，20<v1<30；
1.4<n2<1.5，60<v2<70；
2.0<n3<2.1，20<v3<30；
1.5<n4<1.6，60<v4<70；
2.0<n5<2.1，10<v5<20；
1.5<n6<1.6，60<v6<70；
wherein n1-n16 are refractive indexes of the first lens and the sixth lens in sequence, and v1-v6 are abbe coefficients of the first lens and the sixth lens in sequence.
3. The vehicle-mounted monitoring lens according to claim 1, wherein the first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens further satisfy the following optical conditions:
the curvature radius range of the side surface of the first lens, which is far away from the second lens, is 10-20, and the curvature radius range of the side surface of the first lens, which is close to the second lens, is 4-10;
the curvature radius range of the side surface of the second lens far away from the third lens is-10 to-20, and the curvature radius range of the side surface of the second lens close to the third lens is 3 to 10;
the curvature radius range of the side surface of the third lens far away from the fourth lens is 0-10, and the curvature radius range of the side surface of the third lens close to the fourth lens is-30 to-40;
the curvature radius range of the side surface of the fourth lens, which is far away from the fifth lens, is 20-30, and the curvature radius range of the side surface of the fourth lens, which is close to the fifth lens, is-3 to-5;
the curvature radius range of the side surface of the fifth lens, which is far away from the sixth lens, is-3 to-5, and the curvature radius range of the side surface of the fifth lens, which is near to the sixth lens, is 0 to-10;
the curvature radius range of the side surface of the sixth lens, which is close to the fifth lens, is 10-20, and the curvature radius range of the side surface of the sixth lens, which is far away from the fifth lens, is-20-30.
4. The vehicle-mounted monitoring lens according to claim 1, wherein the first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens further satisfy the following optical conditions:
the central thickness range of the first lens is 0-1 mm;
the central thickness range of the second lens is 0-1 mm;
the central thickness range of the third lens is 5 mm-6 mm;
the central thickness range of the fourth lens is 2 mm-3 mm;
the central thickness range of the fifth lens is 0-1 mm;
the central thickness range of the sixth lens is 1 mm-2 mm.
5. The vehicle-mounted monitoring lens according to claim 1, wherein the combined focal length of the first lens, the second lens, the third lens, the diaphragm, the fourth lens, the fifth lens and the sixth lens is 3.05mm, and the total optical length of the vehicle-mounted monitoring lens is less than 23mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210973638.8A CN115343828A (en) | 2022-08-15 | 2022-08-15 | Vehicle-mounted monitoring lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210973638.8A CN115343828A (en) | 2022-08-15 | 2022-08-15 | Vehicle-mounted monitoring lens |
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| CN115343828A true CN115343828A (en) | 2022-11-15 |
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| CN202210973638.8A Pending CN115343828A (en) | 2022-08-15 | 2022-08-15 | Vehicle-mounted monitoring lens |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN205080307U (en) * | 2015-11-04 | 2016-03-09 | 威海嘉瑞光电科技有限公司 | Intelligence wide angle high definition camera lens for house |
| CN106468824A (en) * | 2015-08-21 | 2017-03-01 | 信泰光学(深圳)有限公司 | Wide-angle optical lens |
| CN106842520A (en) * | 2017-03-30 | 2017-06-13 | 中山联合光电科技股份有限公司 | A kind of high definition panorama looks around optical imaging system |
| CN109613682A (en) * | 2019-01-23 | 2019-04-12 | 南阳南方智能光电有限公司 | A kind of high definition 4K full shot system |
| CN110737075A (en) * | 2019-11-20 | 2020-01-31 | 杭州图谱光电科技有限公司 | high-pixel large-aperture full-glass motion DV lens |
| CN216622831U (en) * | 2021-11-27 | 2022-05-27 | 厦门力鼎光电股份有限公司 | Wide-angle reverse-distance day and night confocal lens |
-
2022
- 2022-08-15 CN CN202210973638.8A patent/CN115343828A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106468824A (en) * | 2015-08-21 | 2017-03-01 | 信泰光学(深圳)有限公司 | Wide-angle optical lens |
| CN205080307U (en) * | 2015-11-04 | 2016-03-09 | 威海嘉瑞光电科技有限公司 | Intelligence wide angle high definition camera lens for house |
| CN106842520A (en) * | 2017-03-30 | 2017-06-13 | 中山联合光电科技股份有限公司 | A kind of high definition panorama looks around optical imaging system |
| CN109613682A (en) * | 2019-01-23 | 2019-04-12 | 南阳南方智能光电有限公司 | A kind of high definition 4K full shot system |
| CN110737075A (en) * | 2019-11-20 | 2020-01-31 | 杭州图谱光电科技有限公司 | high-pixel large-aperture full-glass motion DV lens |
| CN216622831U (en) * | 2021-11-27 | 2022-05-27 | 厦门力鼎光电股份有限公司 | Wide-angle reverse-distance day and night confocal lens |
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