CN106772960A - A kind of passive athermal optical system of intermediate waves broadband - Google Patents
A kind of passive athermal optical system of intermediate waves broadband Download PDFInfo
- Publication number
- CN106772960A CN106772960A CN201611094865.4A CN201611094865A CN106772960A CN 106772960 A CN106772960 A CN 106772960A CN 201611094865 A CN201611094865 A CN 201611094865A CN 106772960 A CN106772960 A CN 106772960A
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- Prior art keywords
- lens
- optical system
- intermediate waves
- detector
- passive
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- 230000003287 optical effect Effects 0.000 title claims abstract description 53
- 239000000463 material Substances 0.000 claims abstract description 36
- 239000002210 silicon-based material Substances 0.000 claims description 9
- 239000005083 Zinc sulfide Substances 0.000 claims description 6
- DRDVZXDWVBGGMH-UHFFFAOYSA-N zinc;sulfide Chemical compound [S-2].[Zn+2] DRDVZXDWVBGGMH-UHFFFAOYSA-N 0.000 claims description 6
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- OYLGJCQECKOTOL-UHFFFAOYSA-L barium fluoride Chemical compound [F-].[F-].[Ba+2] OYLGJCQECKOTOL-UHFFFAOYSA-L 0.000 claims description 3
- 229910001632 barium fluoride Inorganic materials 0.000 claims description 3
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 claims description 3
- 229910001634 calcium fluoride Inorganic materials 0.000 claims description 3
- 238000005057 refrigeration Methods 0.000 claims description 3
- 238000009738 saturating Methods 0.000 claims description 3
- 239000011701 zinc Substances 0.000 claims description 3
- 229910052725 zinc Inorganic materials 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 2
- 239000011521 glass Substances 0.000 claims description 2
- 230000004075 alteration Effects 0.000 abstract description 7
- 238000000926 separation method Methods 0.000 abstract 1
- 201000009310 astigmatism Diseases 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 206010010071 Coma Diseases 0.000 description 1
- 206010073261 Ovarian theca cell tumour Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000003331 infrared imaging Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 208000001644 thecoma Diseases 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
- G02B13/14—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
- 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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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Lenses (AREA)
Abstract
The present invention relates to a kind of passive athermal optical system of intermediate waves broadband, using the Polaroid system configuration of straight barrel type, optical system is made up of seven lens.Select suitable optical material and select suitable radius of curvature and lens separation to correct the cold emission of optical system；Using aspherical special face type, set optimization program to correct the primary aberration and higher order aberrations of optical system, reach the purpose optimized as matter；Suitable optical material, structural material are selected, is changed by optical material refractive index temperature and the thermal expansion change of optical material is cancelled out each other with structural material thermal expansion change, realize that wide temperature range is passive without thermalized design.
Description
Technical field
The invention belongs to optical technical field, it is related to a kind of passive athermal optical system of intermediate waves broadband.
Background technology
Absorption due to air to infra-red radiation, mainly there is three important atmospheric windows, is distributed in 0.75-2.5 μm
In near-infrared, 3-5 μm of medium-wave infrared and 8-14 μm three wavelength bands of LONG WAVE INFRARED.Traditional infrared imaging system is general
The wave band of work is narrower, and the information content of acquisition is limited, therefore, with reference to the imaging characteristicses of each wave band, work in broadband red
Outer optical system can obtain fully useful information, and effectively object can be identified from substantial amounts of image,
Very important status can be played in target identification detection.But it is infrared that existing optical system does not account for intermediate waves broadband
In optical system without thermalization problem, cause the image quality under high and low temperature environment poor.Can not work in simultaneously medium-wave band and
, there is the limitation that single wave band infrared system obtains information in short-wave band.
The content of the invention
The technical problem to be solved
In order to avoid the deficiencies in the prior art part, the present invention proposes a kind of passive athermal optical system of intermediate waves broadband
System, overcomes single wave band infrared system to obtain the limitation of information, while solving in intermediate waves broadband infrared optical system
Without thermalization problem.
Technical scheme
A kind of passive athermal optical system of intermediate waves broadband, it is characterised in that the first lens 1, the second lens the 2, the 3rd
Lens 3, the 4th lens 4, the 5th lens 5, the 6th lens 6 and the 7th lens 7；It is to be arranged in order along optical axis from object space to image space
One lens 1, the second lens 2, the 3rd lens 3, the 4th lens 4, the 5th lens 5, the 6th lens 6 and the 7th lens 7；Seven lens
Parameter be：First lens 1 are negative-power lenses, and the second lens 2 are positive power lens, and the 3rd lens 3 are positive light coke
Lens, the 4th lens 4 are negative-power lenses, and the 5th lens 5 are positive power lens, and the 6th lens 6 are negative-power lenses,
7th lens 7 are positive power lens.
The rear end of 7th lens 7 is provided with detector, the cold stop of detector and seven aperture diaphragms of the optical system of lens
Overlap.
The detector is intermediate waves broadband refrigeration mode detector.
Seven lens are placed in the lens barrel of titanium alloy material with detector one.
The glass material of seven lens is arranged in pairs or groups：First lens 1 are zinc sulphide materials, and the second lens 2 are barium fluoride
Material, the 3rd lens 3 are silicon materials, and the 4th lens 4 are calcium fluoride material, and the 5th lens 5 are zinc sulphide materials, the 6th lens 6
It is silicon materials, the 7th lens 7 are selenizing Zinc material.
The parameter of the detector optical window plane is：
The passive athermal optical system of the intermediate waves broadband according to claim 2 or 6, it is characterised in that：The spy
The material for surveying device optical window plane is silicon materials.
The parameter of seven lens is：
Beneficial effect
The passive athermal optical system of a kind of intermediate waves broadband proposed by the present invention, using the Polaroid system of straight barrel type
Configuration, optical system is made up of seven lens.Select suitable optical material and select suitable radius of curvature and lens
It is spaced to correct the cold emission of optical system；Using aspherical special face type, set optimization program to correct the first of optical system
Level aberration and higher order aberrations, reach the purpose optimized as matter；Suitable optical material, structural material are selected, by optics
The thermal expansion change of Refractive Index of Material temperature change and optical material is cancelled out each other with structural material thermal expansion change, realizes temperature wide
Degree scope is passive without thermalized design.
By the present invention in that it is aspherical with multiple, the free degree during Optical System Design is increased, coordinate correction system
The coma of system, spherical aberration, astigmatism, greatly improve as matter.The material of passive athermal optical system is reasonably combined, optical system is existed
- 40 DEG C~+60 DEG C of temperature range keeps high-quality imaging, and the wave-length coverage of infrared optical system is 1.4 μm~5.1 μm, covering
Medium-wave band and short-wave band.
It is an advantage of the invention that：The present invention is imaged to intermediate waves broadband, improves the recognition efficiency of target, reduces
False alarm rate；Using aspheric design, the selectable variable of optimization design increases, and aberration design is easily obtained excellent picture matter；Adopt
Athermal match materials are carried out with five kinds of infrared optical materials, using non-spherical lens group come spherical aberration corrector, coma, astigmatism, is not had
Use diffraction surfaces；Structure simplifies：System uses seven lens, straight barrel type configuration, compact conformation to greatly reduce technique and want
Ask；Ray machine is debug conveniently：Part in light path is fixed component, debugs simply, largely reduces debuging for system
Difficulty.
Brief description of the drawings
Fig. 1 is infrared optical system index path of the present invention
Specific embodiment
In conjunction with embodiment, accompanying drawing, the invention will be further described：
It is as shown in Figure 1 the light of the seven passive athermal infrared optical systems of chip intermediate waves broadband designed by the present invention
Lu Tu, it is the first lens 1, negative-power lenses, using zinc sulphide materials to be arranged in order along optical axis from object space to image space；Second is saturating
Mirror 2, is positive power lens, using barium fluoride material；3rd lens 3, are positive power lens, using silicon materials；4th is saturating
Mirror 4, is negative-power lenses, using calcium fluoride material；5th lens 5, positive power lens, using zinc sulphide materials；6th
Lens 6, are negative-power lenses, using silicon materials；7th lens 7, are positive power lens, using selenizing Zinc material；
The rear end of 7th lens 7 is provided with detector, and detector is intermediate waves broadband refrigeration mode detector, the cold light of detector
Door screen overlaps with the aperture diaphragm of seven optical systems of lens.Detector optical window plane 8 uses silicon materials, is imaged on detector burnt
In plane 9.
Optical system lens barrel material uses titanium alloy material.The design parameter of the optical system is as shown in the table：
Claims (8)
1. the passive athermal optical system of a kind of intermediate waves broadband, it is characterised in that the first lens (1), the second lens (2),
Three lens (3), the 4th lens (4), the 5th lens (5), the 6th lens (6) and the 7th lens (7)；From object space to image space along optical axis
It is arranged in order as the first lens (1), the second lens (2), the 3rd lens (3), the 4th lens (4), the 5th lens (5), the 6th saturating
Mirror (6) and the 7th lens (7)；The parameter of seven lens is：First lens (1) are negative-power lenses, and the second lens (2) are for just
Power lenses, the 3rd lens (3) are positive power lens, and the 4th lens (4) are negative-power lenses, and the 5th lens (5) are
Positive power lens, the 6th lens (6) are negative-power lenses, and the 7th lens (7) are positive power lens.
2. the passive athermal optical system of intermediate waves broadband according to claim 1, it is characterised in that：7th lens (7)
Rear end is provided with detector, and the cold stop of detector overlaps with the aperture diaphragm of seven optical systems of lens.
3. the passive athermal optical system of intermediate waves broadband according to claim 2, it is characterised in that：The detector is
Intermediate waves broadband refrigeration mode detector.
4. the passive athermal optical system of intermediate waves broadband according to claim 1 or claim 2, it is characterised in that：Described seven
Lens are placed in the lens barrel of titanium alloy material with detector one.
5. the passive athermal optical system of intermediate waves broadband according to claim 1 or claim 2, it is characterised in that：Described seven
The glass material of lens is arranged in pairs or groups：First lens (1) are zinc sulphide materials, and the second lens (2) are barium fluoride material, the 3rd lens
(3) it is silicon materials, the 4th lens (4) are calcium fluoride material, and the 5th lens (5) are zinc sulphide materials, and the 6th lens (6) are silicon material
Material, the 7th lens (7) are selenizing Zinc material.
6. the passive athermal optical system of intermediate waves broadband according to claim 2, it is characterised in that：The detector light
The parameter of window plane is：
7. the passive athermal optical system of the intermediate waves broadband according to claim 2 or 6, it is characterised in that：The detection
The material of device optical window plane is silicon materials.
8. the passive athermal optical system of the intermediate waves broadband according to claim 1 or 5, it is characterised in that：Described seven
The parameter of lens is：
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611094865.4A CN106772960B (en) | 2016-12-02 | 2016-12-02 | A kind of passive athermal optical system of intermediate waves broadband |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611094865.4A CN106772960B (en) | 2016-12-02 | 2016-12-02 | A kind of passive athermal optical system of intermediate waves broadband |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106772960A true CN106772960A (en) | 2017-05-31 |
| CN106772960B CN106772960B (en) | 2019-06-21 |
Family
ID=58882755
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611094865.4A Active CN106772960B (en) | 2016-12-02 | 2016-12-02 | A kind of passive athermal optical system of intermediate waves broadband |
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| Country | Link |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109556734A (en) * | 2018-11-09 | 2019-04-02 | 中国航空工业集团公司洛阳电光设备研究所 | A kind of intermediate waves broadband thermal infrared imager |
| CN111505801A (en) * | 2020-05-18 | 2020-08-07 | 吉林工程技术师范学院 | Medium wave infrared optical system |
| CN114167584A (en) * | 2021-12-13 | 2022-03-11 | 苏州东方克洛托光电技术有限公司 | Wide-spectrum-band imaging lens with long back working distance |
| CN114236782A (en) * | 2021-11-17 | 2022-03-25 | 中航洛阳光电技术有限公司 | Visible light near-infrared short wave broadband optical system |
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| US20120229692A1 (en) * | 2011-03-07 | 2012-09-13 | Panasonic Corporation | Zoom Lens System, Imaging Device and Camera |
| JP2012198506A (en) * | 2011-03-07 | 2012-10-18 | Panasonic Corp | Zoom lens system, imaging device, and camera |
| CN102338927B (en) * | 2010-07-14 | 2013-08-21 | 佳能株式会社 | Zoom lens and image pickup apparatus equipped with zoom lens |
| CN104749773A (en) * | 2015-03-31 | 2015-07-01 | 中国科学院上海技术物理研究所 | Minus 60 DEG C to 80 DEG C infrared ultra wide temperature range heat difference elimination optical system |
| CN106019534A (en) * | 2016-06-27 | 2016-10-12 | 湖北久之洋红外***股份有限公司 | 1.3-5um broadband infrared imaging lens |
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| CN102338927B (en) * | 2010-07-14 | 2013-08-21 | 佳能株式会社 | Zoom lens and image pickup apparatus equipped with zoom lens |
| US20120229692A1 (en) * | 2011-03-07 | 2012-09-13 | Panasonic Corporation | Zoom Lens System, Imaging Device and Camera |
| JP2012198506A (en) * | 2011-03-07 | 2012-10-18 | Panasonic Corp | Zoom lens system, imaging device, and camera |
| CN104749773A (en) * | 2015-03-31 | 2015-07-01 | 中国科学院上海技术物理研究所 | Minus 60 DEG C to 80 DEG C infrared ultra wide temperature range heat difference elimination optical system |
| CN105157851A (en) * | 2015-03-31 | 2015-12-16 | 中国科学院上海技术物理研究所 | Minus 60 DEG C to 80 DEG C infrared ultra wide temperature range heat difference elimination optical system |
| CN106019534A (en) * | 2016-06-27 | 2016-10-12 | 湖北久之洋红外***股份有限公司 | 1.3-5um broadband infrared imaging lens |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109556734A (en) * | 2018-11-09 | 2019-04-02 | 中国航空工业集团公司洛阳电光设备研究所 | A kind of intermediate waves broadband thermal infrared imager |
| CN111505801A (en) * | 2020-05-18 | 2020-08-07 | 吉林工程技术师范学院 | Medium wave infrared optical system |
| CN111505801B (en) * | 2020-05-18 | 2021-09-14 | 吉林工程技术师范学院 | Medium wave infrared optical system |
| CN114236782A (en) * | 2021-11-17 | 2022-03-25 | 中航洛阳光电技术有限公司 | Visible light near-infrared short wave broadband optical system |
| CN114236782B (en) * | 2021-11-17 | 2023-04-18 | 中航洛阳光电技术有限公司 | Visible light near-infrared short wave broadband optical system |
| CN114167584A (en) * | 2021-12-13 | 2022-03-11 | 苏州东方克洛托光电技术有限公司 | Wide-spectrum-band imaging lens with long back working distance |
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| Publication number | Publication date |
|---|---|
| CN106772960B (en) | 2019-06-21 |
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