CN109491052B - 17mm high-resolution infrared lens and assembly method thereof - Google Patents
17mm high-resolution infrared lens and assembly method thereof Download PDFInfo
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- CN109491052B CN109491052B CN201811627744.0A CN201811627744A CN109491052B CN 109491052 B CN109491052 B CN 109491052B CN 201811627744 A CN201811627744 A CN 201811627744A CN 109491052 B CN109491052 B CN 109491052B
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- 238000000034 method Methods 0.000 title claims abstract description 12
- 230000003287 optical effect Effects 0.000 claims abstract description 16
- 125000006850 spacer group Chemical group 0.000 claims description 23
- 238000003825 pressing Methods 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 7
- 239000011148 porous material Substances 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000011031 large-scale manufacturing process Methods 0.000 abstract description 2
- 238000012544 monitoring process Methods 0.000 abstract description 2
- 238000002834 transmittance Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920001800 Shellac Polymers 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000003331 infrared imaging Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012634 optical imaging Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- ZLGIYFNHBLSMPS-ATJNOEHPSA-N shellac Chemical compound OCCCCCC(O)C(O)CCCCCCCC(O)=O.C1C23[C@H](C(O)=O)CCC2[C@](C)(CO)[C@@H]1C(C(O)=O)=C[C@@H]3O ZLGIYFNHBLSMPS-ATJNOEHPSA-N 0.000 description 1
- 229940113147 shellac Drugs 0.000 description 1
- 235000013874 shellac Nutrition 0.000 description 1
- 239000004208 shellac Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 125000003003 spiro group Chemical group 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- 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
- G02B13/004—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 four lenses
-
- 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
-
- 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
-
- 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
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/021—Mountings, adjusting means, or light-tight connections, for optical elements for lenses for more than one lens
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/025—Mountings, adjusting means, or light-tight connections, for optical elements for lenses using glue
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/026—Mountings, adjusting means, or light-tight connections, for optical elements for lenses using retaining rings or springs
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Lenses (AREA)
- Lens Barrels (AREA)
Abstract
The invention relates to a 17mm high-resolution infrared lens and an assembly method thereof, the infrared lens comprises a lens barrel and an optical system arranged in the lens barrel, the optical system comprises a positive lens A, a positive lens B, a negative lens C and a positive lens D which are sequentially arranged along the incidence direction of light rays from left to right, the air interval between the positive lens A and the positive lens B is 23.65mm, the air interval between the positive lens B and the negative lens C is 2.36mm, and the air interval between the negative lens C and the positive lens D is 13.56mm. The invention has the advantages of compact structure, wide angle of view, short structural length of the lens, convenient carrying, high transmittance, wide focusing range and the like, and can be matched with a long-wave infrared uncooled 1024x768, 14 mu m detector to perform live recording and monitoring tasks. The manufacturing cost is low, and the method is suitable for large-scale production.
Description
Technical field:
the invention relates to a 17mm high-resolution infrared lens and an assembly method thereof.
The background technology is as follows:
with the development of scientific technology, infrared imaging technology has been widely used in the fields of national defense, industry, medical treatment, etc. The infrared detection has certain capabilities of penetrating smoke, fog, haze, snow and the like and identifying camouflage, is not interfered by strong light and flash of a battlefield, can realize long-distance all-weather observation, and is particularly suitable for target detection at night and under bad weather conditions.
The temperature not only can influence the refractive index of the optical material, but also can cause thermal expansion and cold contraction to the lens barrel material, so that the focal power change and the optimal image plane are offset. The optical imaging quality is reduced, the image is blurred, the contrast is reduced, and the imaging performance of the lens is finally affected. The lens resolution is low in the current market, imaging is unclear, so that the recognition degree in the use process is insufficient, and the market demand cannot be met.
The invention comprises the following steps:
the invention aims to overcome the defects, and provides a 17mm high-resolution infrared lens and an assembly method thereof.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: the 17mm high-resolution infrared lens comprises a lens barrel and an optical system arranged in the lens barrel, wherein the optical system comprises a positive lens A, a positive lens B, a negative lens C and a positive lens D which are sequentially arranged along the incidence direction of light rays from left to right.
Further, the air space between the positive lens a and the positive lens B is 21.63mm, the air space between the positive lens B and the negative lens C is 2.52mm, and the air space between the negative lens C and the positive lens D is 18.56mm.
Further, positive lens A, positive lens B, negative lens C and positive lens D are all installed on the inner wall of the lens barrel, the front side of positive lens A is provided with an A piece clamping ring, an AB spacer ring is arranged between positive lens A and positive lens B, a BC spacer ring is arranged between positive lens B and negative lens C and a diaphragm spacer is additionally arranged between positive lens B and negative lens C, and a CD spacer ring is arranged between negative lens C and positive lens D.
Further, a dispensing groove is formed between the positive lens A and the sheet A pressing ring, so that dispensing and sealing are facilitated.
Further, the lens barrel comprises an outer cover which is in threaded connection with the outer wall of the rear end of the lens barrel, and a sealing ring is arranged between the inner wall of the outer cover and the outer wall of the lens barrel so as to seal and prevent water.
The invention adopts another technical scheme that: a17 mm high-resolution infrared lens assembly method is characterized in that a positive lens D, CD spacer ring, a negative lens C, a diaphragm spacer, a BC spacer ring, a positive lens B, AB spacer ring and a positive lens A are assembled from the front end of a main lens barrel in sequence and pass through and are fixed by an A-piece pressing ring.
Compared with the prior art, the invention has the following effects: the invention has the advantages of compact structure, wide angle of view, short structural length of the lens, convenient carrying, high transmittance, wide focusing range and the like, and can be matched with a long-wave infrared uncooled 1024x768, 14 mu m detector to perform live recording and monitoring tasks. The manufacturing cost is low, and the method is suitable for large-scale production.
Description of the drawings:
FIG. 1 is a schematic view of a mechanical structure of an optical lens according to an embodiment of the present invention;
fig. 2 is a schematic diagram of an optical system according to an embodiment of the present invention.
In the figure:
1-A piece pressing ring; 2-a lens barrel; 3-AB spacer rings; 4-BC spacer; 5-CD spacers; 6, a sealing ring; 7-an outer cover; 8-positive lens A; 9-positive lens B; 10-negative lens C; 11-positive lens D.
The specific embodiment is as follows:
the invention will be described in further detail with reference to the drawings and the detailed description.
As shown in fig. 1-2, the 17mm high-resolution infrared lens of the invention comprises a lens barrel 2 and an optical system arranged in the lens barrel 2, wherein the optical system comprises a positive lens A8, a positive lens B9, a negative lens C10 and a positive lens D11 which are sequentially arranged along the incidence direction of light rays from left to right, the air interval between the positive lens a and the positive lens B is 21.63mm, the air interval between the positive lens B and the negative lens C is 2.52mm, and the air interval between the negative lens C and the positive lens D is 18.56mm.
In this embodiment, the positive lens a, the positive lens B, the negative lens C and the positive lens D are all mounted on the inner wall of the lens barrel, the front side of the positive lens a is provided with an a-plate pressing ring 1, an AB space ring 3 is arranged between the positive lens a and the positive lens B, a BC space ring 4 is arranged between the positive lens B and the negative lens C, a diaphragm spacer is additionally mounted between the positive lens B and the negative lens C, and a CD space ring 5 is arranged between the negative lens C and the positive lens D.
In this embodiment, a dispensing groove is disposed between the positive lens a and the a-piece pressing ring, so as to facilitate dispensing and sealing.
In this embodiment, still include dustcoat 7, dustcoat 7 spiro union is at the rear end outer wall of lens cone 2, is provided with sealing washer 6 between the outer wall of the inner wall of dustcoat 7 and lens cone 2 to seal waterproof, improve the heavy sense of hand in-process.
In the embodiment, a series of measures are taken on the premise of ensuring the compact structure, so that the attractive appearance of the lens is improved, and the long waist type design enables the transition of the lens to be smooth, so that the aesthetic feeling is improved.
In this embodiment, specific parameters of each lens are as follows:
in this embodiment, the optical structure formed by the lens group achieves the following optical indexes:
working wave band: 8 μm to 12 μm;
focal length: f' =17 mm;
the detector comprises: long wave infrared uncooled 1024×768, 14 μm;
angle of view: 50.4 x 38.9;
relative pore diameter D/f': 1/1.
The invention adopts another technical scheme that: a17 mm high-resolution infrared lens assembly method is characterized in that a positive lens D, CD spacer ring, a negative lens C, a diaphragm spacer, a BC spacer ring, a positive lens B, AB spacer ring and a positive lens A are assembled from the front end of a main lens barrel in sequence and pass through and are fixed by an A-piece pressing ring. The assembly is favorable for ensuring the air distance between the positive lens A and the positive lens B, improving the assembly yield and the production efficiency, and the shellac is uniformly injected at the thread matching position of the lens barrel pressing ring.
The foregoing description is only of the preferred embodiments of the invention, and all changes and modifications that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (5)
1. The 17mm high-resolution infrared lens is characterized in that: the optical system comprises a lens barrel and an optical system arranged in the lens barrel, wherein the optical system comprises a positive lens A, a positive lens B, a negative lens C and a positive lens D which are sequentially arranged along the incidence direction of light rays from left to right;
the air interval between the positive lens A and the positive lens B is 21.63mm, the air interval between the positive lens B and the negative lens C is 2.52mm, and the air interval between the negative lens C and the positive lens D is 18.56mm;
the specific parameters for each lens are shown in the following table:
the optical structure formed by the lens groups achieves the following optical indexes:
working wave band: 8 μm to 12 μm;
focal length: f' =17 mm;
the detector comprises: long wave infrared uncooled 1024×768, 14 μm;
angle of view: 50.4 x 38.9;
relative pore diameter D/f': 1/1.
2. A 17mm high resolution infrared lens according to claim 1, wherein: the positive lens A, the positive lens B, the negative lens C and the positive lens D are all installed on the inner wall of the lens barrel, an A-piece pressing ring is arranged on the front side of the positive lens A, an AB spacer ring is arranged between the positive lens A and the positive lens B, a BC spacer ring is arranged between the positive lens B and the negative lens C, a diaphragm spacer is additionally installed between the positive lens B and the negative lens C, and a CD spacer ring is arranged between the negative lens C and the positive lens D.
3. A 17mm high resolution infrared lens according to claim 2, wherein: and a dispensing groove is arranged between the positive lens A and the sheet A pressing ring so as to facilitate dispensing and sealing.
4. A 17mm high resolution infrared lens according to claim 1, wherein: the lens barrel comprises a lens barrel body, and is characterized by further comprising an outer cover which is in threaded connection with the outer wall of the rear end of the lens barrel, wherein a sealing ring is arranged between the inner wall of the outer cover and the outer wall of the lens barrel body so as to seal and prevent water.
5. The method for assembling the 17mm high-resolution infrared lens is characterized by comprising the following steps of: comprising assembling positive lens D, CD spacer, negative lens C, diaphragm spacer, BC spacer, positive lens B, AB spacer and positive lens A in this order from the front end of the main barrel and fixing them by A-piece clamping ring when assembling by using the 17mm high resolution infrared lens as claimed in any one of claims 1 to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811627744.0A CN109491052B (en) | 2018-12-28 | 2018-12-28 | 17mm high-resolution infrared lens and assembly method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811627744.0A CN109491052B (en) | 2018-12-28 | 2018-12-28 | 17mm high-resolution infrared lens and assembly method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109491052A CN109491052A (en) | 2019-03-19 |
| CN109491052B true CN109491052B (en) | 2024-03-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811627744.0A Active CN109491052B (en) | 2018-12-28 | 2018-12-28 | 17mm high-resolution infrared lens and assembly method thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN109491052B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112394469B (en) * | 2020-12-01 | 2023-03-10 | 天津津航技术物理研究所 | High-precision mechanical passive athermalization all-silicon lens |
| CN114252982B (en) * | 2021-12-14 | 2023-04-21 | 安徽光智科技有限公司 | Athermal infrared lens with focal length of 35mm, assembly method and imaging method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102636863A (en) * | 2012-04-24 | 2012-08-15 | 中国电子科技集团公司第十一研究所 | Infrared double waveband confocal optical system |
| JP2012252193A (en) * | 2011-06-03 | 2012-12-20 | Konica Minolta Advanced Layers Inc | Imaging lens for imaging apparatus, imaging apparatus and portable terminal |
| CN202735579U (en) * | 2011-08-18 | 2013-02-13 | 昆明物理研究所 | Uncooled long-wave infrared ultra-wide-angle fisheye lens |
| RU2578661C1 (en) * | 2014-12-30 | 2016-03-27 | Акционерное общество "Швабе - Приборы" | Infrared lens with smoothly varying focal distance |
| CN106405797A (en) * | 2016-11-25 | 2017-02-15 | 福建福光股份有限公司 | Economical high-light-flux and high-resolution prime lens |
| CN107526154A (en) * | 2017-09-29 | 2017-12-29 | 福建福光天瞳光学有限公司 | Portable wide angle optical is without thermalization LONG WAVE INFRARED camera lens |
| CN107561672A (en) * | 2017-10-21 | 2018-01-09 | 福建福光天瞳光学有限公司 | F15mm machineries passive type is without thermalization camera lens and its assembly method |
| CN207611190U (en) * | 2017-09-29 | 2018-07-13 | 福建福光天瞳光学有限公司 | Portable wide angle optical is without thermalization LONG WAVE INFRARED optical system and lens construction |
| CN209343027U (en) * | 2018-12-28 | 2019-09-03 | 福建福光天瞳光学有限公司 | A kind of 17mm high-resolution infrared lens |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI386700B (en) * | 2008-05-28 | 2013-02-21 | E Pin Optical Industry Co Ltd | Short overall length imaging lens system with four lenses |
-
2018
- 2018-12-28 CN CN201811627744.0A patent/CN109491052B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012252193A (en) * | 2011-06-03 | 2012-12-20 | Konica Minolta Advanced Layers Inc | Imaging lens for imaging apparatus, imaging apparatus and portable terminal |
| CN202735579U (en) * | 2011-08-18 | 2013-02-13 | 昆明物理研究所 | Uncooled long-wave infrared ultra-wide-angle fisheye lens |
| CN102636863A (en) * | 2012-04-24 | 2012-08-15 | 中国电子科技集团公司第十一研究所 | Infrared double waveband confocal optical system |
| RU2578661C1 (en) * | 2014-12-30 | 2016-03-27 | Акционерное общество "Швабе - Приборы" | Infrared lens with smoothly varying focal distance |
| CN106405797A (en) * | 2016-11-25 | 2017-02-15 | 福建福光股份有限公司 | Economical high-light-flux and high-resolution prime lens |
| CN107526154A (en) * | 2017-09-29 | 2017-12-29 | 福建福光天瞳光学有限公司 | Portable wide angle optical is without thermalization LONG WAVE INFRARED camera lens |
| CN207611190U (en) * | 2017-09-29 | 2018-07-13 | 福建福光天瞳光学有限公司 | Portable wide angle optical is without thermalization LONG WAVE INFRARED optical system and lens construction |
| CN107561672A (en) * | 2017-10-21 | 2018-01-09 | 福建福光天瞳光学有限公司 | F15mm machineries passive type is without thermalization camera lens and its assembly method |
| CN209343027U (en) * | 2018-12-28 | 2019-09-03 | 福建福光天瞳光学有限公司 | A kind of 17mm high-resolution infrared lens |
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| CN109491052A (en) | 2019-03-19 |
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