CN113050257B - Wide-spectrum ultraviolet imager optical system based on material - Google Patents
Wide-spectrum ultraviolet imager optical system based on material Download PDFInfo
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- CN113050257B CN113050257B CN202110294069.XA CN202110294069A CN113050257B CN 113050257 B CN113050257 B CN 113050257B CN 202110294069 A CN202110294069 A CN 202110294069A CN 113050257 B CN113050257 B CN 113050257B
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- 230000003287 optical effect Effects 0.000 title claims abstract description 68
- 239000000463 material Substances 0.000 title claims abstract description 38
- 238000001228 spectrum Methods 0.000 title abstract description 16
- 230000003595 spectral effect Effects 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 5
- 239000005350 fused silica glass Substances 0.000 claims description 5
- 230000005499 meniscus Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 11
- 238000012545 processing Methods 0.000 abstract description 7
- 238000000825 ultraviolet detection Methods 0.000 abstract description 3
- 230000004075 alteration Effects 0.000 description 9
- 238000003384 imaging method Methods 0.000 description 5
- 230000005855 radiation Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000009826 distribution Methods 0.000 description 3
- 238000010923 batch production Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 206010010071 Coma Diseases 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 239000003305 oil spill Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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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
- G02B13/14—Optical objectives specially designed for the purposes specified below for use with infrared or ultraviolet radiation
- G02B13/143—Optical objectives specially designed for the purposes specified below for use with infrared or ultraviolet radiation for use with ultraviolet radiation
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B17/00—Systems with reflecting surfaces, with or without refracting elements
- G02B17/08—Catadioptric systems
- G02B17/0804—Catadioptric systems using two curved mirrors
- G02B17/0808—Catadioptric systems using two curved mirrors on-axis systems with at least one of the mirrors having a central aperture
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B17/00—Systems with reflecting surfaces, with or without refracting elements
- G02B17/08—Catadioptric systems
- G02B17/0856—Catadioptric systems comprising a refractive element with a reflective surface, the reflection taking place inside the element, e.g. Mangin mirrors
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
- G02B5/208—Filters for use with infrared or ultraviolet radiation, e.g. for separating visible light from infrared and/or ultraviolet radiation
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B11/00—Filters or other obturators specially adapted for photographic purposes
Abstract
The invention discloses a wide-spectrum ultraviolet imager optical system based on a material, which belongs to the technical field of ultraviolet detection and is used for solving the technical problems of high difficulty and high cost of lens processing, detection and optical-mechanical adjustment caused by more than two lens materials in the wide-spectrum ultraviolet imager optical system in the prior art and incomplete spherical lens; the refraction-reflection lens group and the optical filter are sequentially arranged between the first lens and the second lens; and a detector arranged on the side of the second lens far away from the filter; the lens materials of the first lens, the second lens and the refraction-reflection lens group are the same, and the lenses are spherical surfaces.
Description
Technical Field
The invention relates to the technical field of ultraviolet detection, in particular to a wide-spectrum ultraviolet imager optical system based on a material.
Background
The ultraviolet detection technology is a mature technology, is widely applied to the fields of space atmosphere remote sensing detection, astronomical ultraviolet star observation, environment monitoring, marine oil spill pollution monitoring, weapon warning, weapon early warning, power line patrol and the like, and has important significance for military application and human production and life;
the optical system is the core part of the ultraviolet imaging detection system, the performance of the ultraviolet imaging detection system is directly determined, and the correction difficulty of chromatic aberration of the ultraviolet band optical system is increased compared with that of a visible/infrared band optical system because the number of optical lens materials which can be selected for an ultraviolet band is small, particularly the physicochemical property, the processing performance and the radiation resistance of optical materials in practical application are considered;
in the prior art, in the existing ultraviolet imager optical system, especially the wide-band ultraviolet imager optical system, the optical lens materials are all two or more, and the lens is not completely spherical, so that the difficulty of lens processing, detection and optical-mechanical adjustment is large, and the cost is correspondingly increased by various lens materials;
therefore, how to solve the problem that the difficulty and the cost of lens processing, detection and optical-mechanical adjustment are high due to the fact that the optical lens materials in the optical system of the wide-band ultraviolet imager are two or more than two and the lens is not completely spherical in the prior art becomes an important technical problem to be solved by technical staff in the field.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a wide-spectrum ultraviolet imager optical system based on a material, all lenses in the optical system are made of the same material and are spherical, the production cost is reduced, the optical machine processing and the adjustment are easy, and according to the requirements of the aperture and the focal length of the wide-spectrum ultraviolet imager optical system and the performance index of a high-sensitivity and high-dynamic ultraviolet imaging detector, a fold-reflection optical system structure is adopted, the good imaging quality is achieved, and the requirements of the ultraviolet imager on small size and light weight are met.
In order to achieve the above purpose, the invention provides the following technical scheme:
the invention discloses a wide-spectrum ultraviolet imager optical system based on a material, which comprises:
a first lens and a second lens disposed at an interval on a central axis of the optical system;
the refraction-reflection lens group and the optical filter are sequentially arranged between the first lens and the second lens; and
a detector disposed on a side of the second lens away from the filter;
the first lens, the second lens and the refraction-reflection lens group are made of the same lens material, and the lenses are spherical.
Further, the catadioptric lens group includes at least two catadioptric mirrors.
Further, the catadioptric lens group includes a first catadioptric lens and a second catadioptric lens;
the side of the optical filter, which is far away from the second lens, is provided with the first fold-reflector, and the center of the first fold-reflector is provided with a through hole through which the folded light of the second fold-reflector can pass;
and a second fold-reflection mirror is arranged on the first lens at the side of the optical filter.
Further, the optical filter is a flat filter.
Further, the first lens is a meniscus lens.
Furthermore, the materials of the first lens, the second lens and the refraction-reflection lens group are fused quartz.
Furthermore, the optical system has a spectral range of 210-400 nm.
In the technical scheme, the wide-spectrum ultraviolet imager optical system based on one material has the advantages that:
compared with the prior art, the wide-spectrum ultraviolet imager optical system designed based on one material solves the problem that a plurality of optical lens materials correct chromatic aberration of the wide-spectrum ultraviolet imager system, all the lenses are made of the same material, the ultraviolet band energy transmission efficiency and the radiation resistance of the materials in practical application are comprehensively considered, the preferred lens material is fused quartz, the optical system utilizes a fold-reflection optical system structure, and through reasonable focal power and lens number distribution, the chromatic aberration of the optical system can be reduced to the minimum, and the lenses are spherical, so that the difficulties of lens processing, detection and optical-mechanical adjustment are reduced, meanwhile, the production cost is correspondingly reduced, and a foundation is laid for batch production.
Drawings
In order to more clearly illustrate the embodiments of the present application or technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.
FIG. 1 is a schematic structural diagram of a wide-band ultraviolet imager optical system based on a material according to the present disclosure;
fig. 2 is an optical diagram of a wide-band uv imager optical system based on one material as disclosed in the present invention.
Description of reference numerals:
1. a first lens; 2. a first fold-reverse mirror; 3. a second fold-mirror; 4. an optical filter; 5. a second lens; 6. a detector; 7. a central axis.
Detailed Description
In order to make the technical solutions of the present invention better understood, those skilled in the art will now describe the present invention in further detail with reference to the accompanying drawings.
As shown in fig. 1;
the invention relates to a wide-spectrum ultraviolet imager optical system based on a material, which comprises a first lens 1 and a second lens 5 which are arranged on a central axis 7 of the optical system at intervals, a refraction-reflection lens group and a high-inhibition-ratio optical filter 4, wherein the refraction-reflection lens group is sequentially arranged between the first lens 1 and the second lens 5; the detector 6 is arranged on the side, far away from the optical filter 4, of the second lens 5, images are collected and output through the detector 6, and the catadioptric lens group is used for forming a catadioptric light path so as to reduce the volume of the instrument and reduce the weight of the instrument, namely, the optical system adopts a catadioptric optical system which is not sensitive to the change of ambient temperature and ambient air pressure, has a relatively simple structure and meets the requirements of small size and light weight of the wide-spectrum ultraviolet imager;
specifically, the catadioptric lens group comprises two catadioptric mirrors, namely a first catadioptric mirror 2 and a second catadioptric mirror 3, wherein a through hole through which the folded light of the second catadioptric mirror 3 can pass is formed in the center of the first catadioptric mirror 2;
referring to fig. 1, a first fold-reflector 2 and a second fold-reflector 3 are arranged between a first lens 1 and a light filter 4 on a central axis 7, the first fold-reflector 2 is arranged on the side of the central axis 7 close to the light filter 4, and the second fold-reflector 3 is arranged on the side of the central axis 7 close to the first lens 1;
in a specific embodiment, preferably, the optical system has a spectral range of 210-400nm, the ultraviolet band covers a spectral range of 10-400nm, the ultraviolet spectral radiation in a band less than 200nm is easily absorbed by the atmosphere, and is defined as a vacuum ultraviolet-extreme ultraviolet band, and the ultraviolet spectral radiation in a band of 200-400nm can be used for atmospheric window detection and is an important band for target detection.
The first lens 1 is a meniscus lens and is used for correcting spherical aberration and coma aberration of a system, the curve radiuses of two surfaces of the first lens 1 are-100.23 mm, -122.579mm and 7mm, as shown in figure 2, the curve radiuses of the two surfaces of the first lens 1 are-310 mm, -245mm and 7mm respectively, the light ray passes through the first lens 1 and then is at a distance of 90mm, the light ray passes through the first refractor-reflector 2 and then is at a distance of 66.16mm, the light ray passes through the first refractor-reflector 2 and then is at a distance of-187.7 mm, -152.76mm and then is at a thickness of 4.5mm, the light ray passes through the second refractor-reflector 3 and then is at a distance of 80.2mm, the light ray passes through the parallel flat plate 4 with a thickness of 7mm, and the detection requirements of different ultraviolet wave bands are realized through the high inhibition ratio 4, the light rays pass through the optical filter 4 and then pass through the second lens 5 with the thickness of 4mm, aberration is corrected, a light path is converged, the curvature radiuses of two surfaces of the second lens 5 are respectively 25.38mm and 18.6mm, finally the light rays are converged on the image surface of the detector 6, the image is collected and output by the image surface of the detector 6, and the distance between the image surface of the detector 6 and the second lens 5 is 30.4 mm;
the optical system lens, the internally reflecting refraction-reflection mirror and the optical filter are made of fused quartz, the lenses are all spherical surfaces, and the chromatic aberration of the optical system can be reduced to the minimum by utilizing a single material and through reasonable focal power and lens number distribution;
optical design software CODEC is used for evaluating system optimization and image quality, the modulation transfer function of the system in a full-field full-wave band is better than 0.6 and the system Airy spot radius is better than 0.01mm under the Nyquist frequency of 50lp/mm, and the system has good imaging quality;
in the technical scheme, the wide-spectrum ultraviolet imager optical system based on one material has the advantages that:
compared with the prior art, the wide-spectrum ultraviolet imager optical system designed based on one material solves the problem that a plurality of optical lens materials correct chromatic aberration of the wide-spectrum ultraviolet imager system, all the lenses are made of the same material, the ultraviolet band energy transmission efficiency and the radiation resistance of the materials in practical application are comprehensively considered, the preferred lens material is fused quartz, the optical system utilizes a fold-reflection optical system structure, and through reasonable focal power and lens number distribution, the chromatic aberration of the optical system can be reduced to the minimum, and the lenses are spherical, so that the difficulties of lens processing, detection and optical-mechanical adjustment are reduced, meanwhile, the production cost is correspondingly reduced, and a foundation is laid for batch production.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.
Claims (4)
1. A wide band uv imager optical system based on a material, comprising:
a first lens (1) and a second lens (5) which are arranged at intervals on the central axis (7) of the optical system;
a refraction-reflection mirror group and an optical filter (4) which are sequentially arranged between the first lens (1) and the second lens (5); and
a detector (6) arranged on the side of the second lens (5) far away from the optical filter (4);
wherein the first lens (1), the second lens (5) and the refraction-reflection lens group are made of the same material, and the lenses are spherical;
the refraction-reflection mirror group comprises two refraction-reflection mirrors;
the refraction-reflection lens group comprises a first refraction-reflection lens (2) and a second refraction-reflection lens (3);
the side, far away from the second lens (5), of the optical filter (4) is provided with the first folding-reflecting mirror (2), and a through hole through which the folded light of the second folding-reflecting mirror (3) can pass is formed in the center of the first folding-reflecting mirror (2);
a second fold-reflector (3) is arranged on the first lens (1) at the side of the optical filter (4);
the curvature radiuses of two surfaces of the first refractor (2) are-310 mm and-245 mm respectively, and the thickness is 7 mm;
the curvature radiuses of two surfaces of the second fold-reflecting mirror (3) are-187.7 mm and-152.76 mm respectively, and the thickness is 4.5 mm;
wherein, the light rays pass through the first lens (1) and then turn back to the second refractor (3) through the first refractor-reflector (2) which is internally reflected at a distance of 90 mm;
the optical system is suitable for a wide-band ultraviolet imager optical system with the spectral range of 210-400 nm.
2. A material based broad band ultraviolet imager optical system as claimed in claim 1, wherein;
the optical filter (4) is a flat filter.
3. A material based broad band ultraviolet imager optical system as claimed in claim 1, wherein;
the first lens (1) is a meniscus lens.
4. A material based broad band ultraviolet imager optical system as claimed in any one of claims 1 to 3, wherein;
the materials of the first lens (1), the second lens (5) and the refraction-reflection lens group are fused quartz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110294069.XA CN113050257B (en) | 2021-03-19 | 2021-03-19 | Wide-spectrum ultraviolet imager optical system based on material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110294069.XA CN113050257B (en) | 2021-03-19 | 2021-03-19 | Wide-spectrum ultraviolet imager optical system based on material |
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| CN113050257A CN113050257A (en) | 2021-06-29 |
| CN113050257B true CN113050257B (en) | 2022-03-01 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0452963A2 (en) * | 1990-04-20 | 1991-10-23 | Dainippon Screen Mfg. Co., Ltd. | Objective lens system for use within microscope |
| GB0106575D0 (en) * | 1996-07-22 | 2001-05-09 | Kla Instr Corp | Broad spectrum ultraviolet catadioptric imaging system |
| CN107219611A (en) * | 2017-07-28 | 2017-09-29 | 长春国科精密光学技术有限公司 | A kind of day blind ultraviolet imagery optical lens and system |
| CN206920684U (en) * | 2017-05-10 | 2018-01-23 | 深圳中科天衢能源安全技术有限公司 | Solar blind UV camera lens |
| CN108828754A (en) * | 2018-06-20 | 2018-11-16 | 北京空间机电研究所 | A kind of the ultrahigh resolution imaging optical system and imaging method of submicron order pixel |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100580499C (en) * | 2007-11-21 | 2010-01-13 | 中国科学院上海技术物理研究所 | Refraction-reflection type dual-waveband imaging telescope optical system |
| CN102519595B (en) * | 2011-12-07 | 2013-10-09 | 中国科学院合肥物质科学研究院 | Optical system of satellite-borne differential absorption spectrometer |
-
2021
- 2021-03-19 CN CN202110294069.XA patent/CN113050257B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0452963A2 (en) * | 1990-04-20 | 1991-10-23 | Dainippon Screen Mfg. Co., Ltd. | Objective lens system for use within microscope |
| GB0106575D0 (en) * | 1996-07-22 | 2001-05-09 | Kla Instr Corp | Broad spectrum ultraviolet catadioptric imaging system |
| CN206920684U (en) * | 2017-05-10 | 2018-01-23 | 深圳中科天衢能源安全技术有限公司 | Solar blind UV camera lens |
| CN107219611A (en) * | 2017-07-28 | 2017-09-29 | 长春国科精密光学技术有限公司 | A kind of day blind ultraviolet imagery optical lens and system |
| CN108828754A (en) * | 2018-06-20 | 2018-11-16 | 北京空间机电研究所 | A kind of the ultrahigh resolution imaging optical system and imaging method of submicron order pixel |
Non-Patent Citations (1)
| Title |
|---|
| 用于电离层探测的远紫外成像光谱仪研究;于磊，王淑荣，林冠宇，等;《仪器仪表学报》;20110531;全文 * |
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