CN113639969B - High-precision temperature difference type infrared parallel light pipe - Google Patents
High-precision temperature difference type infrared parallel light pipe Download PDFInfo
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- CN113639969B CN113639969B CN202110952457.2A CN202110952457A CN113639969B CN 113639969 B CN113639969 B CN 113639969B CN 202110952457 A CN202110952457 A CN 202110952457A CN 113639969 B CN113639969 B CN 113639969B
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- 230000005855 radiation Effects 0.000 claims abstract description 22
- 230000003287 optical effect Effects 0.000 claims abstract description 17
- 238000002310 reflectometry Methods 0.000 claims abstract description 9
- 238000012360 testing method Methods 0.000 claims abstract description 8
- 230000005540 biological transmission Effects 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 11
- 238000001514 detection method Methods 0.000 claims description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 239000010949 copper Substances 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims 2
- 239000000758 substrate Substances 0.000 claims 1
- 230000005457 Black-body radiation Effects 0.000 abstract description 2
- 238000003331 infrared imaging Methods 0.000 description 4
- 230000006978 adaptation Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 241001272720 Medialuna californiensis Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004422 calculation algorithm Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
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- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/02—Testing optical properties
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/30—Collimators
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J2005/0077—Imaging
Abstract
The invention discloses a high-precision temperature difference type infrared parallel light pipe, which comprises a target blackbody and a background blackbody which are arranged on a test platform, wherein the target blackbody and the background blackbody are connected with a temperature difference type blackbody controller, and radiant energy of the target blackbody is deflected by 90 degrees through an infrared deflection plane reflector and then transmitted through a transmission infrared target; the radiation energy of the background blackbody is reflected by the transparent and reflective infrared target reflecting surface, so that the optical paths of the target blackbody and the background blackbody are kept consistent, and the two parts of radiation energy are turned by the secondary reflector and the main reflector to realize the collimation radiation of the target and background temperature difference signals. According to the high-precision temperature difference type infrared parallel light pipe, the plane reflector which is consistent with the target specular reflectivity is added behind the transflective infrared target, so that the optical paths of the target blackbody and the background blackbody radiation capability are kept consistent, and the temperature difference precision of the temperature difference type infrared parallel light pipe can be improved due to higher specular reflectivity.
Description
Technical Field
The invention relates to a high-precision temperature difference type infrared parallel light pipe, and belongs to the technical field of optical test equipment.
Background
The infrared collimator is the most basic calibration instrument, can equivalent the temperature and the shape of an infrared light source component positioned on a focal plane into an infinitely distant target and a scene, namely provides a beam of parallel light for target source simulation, and has very important roles in the debugging, installation and test processes of an infrared system as an infinitely distant target simulator. The collimator may be roughly classified into a transmissive collimator, a vision-adjustable collimator, a split collimator, a turn-around collimator, a reflective collimator, and the like according to different use conditions. However, the existing infrared collimator has low precision and cannot meet the actual needs.
Disclosure of Invention
The invention aims to: in order to overcome the defects in the prior art, the invention provides the high-precision temperature difference type infrared parallel light pipe, and the plane reflecting mirror with the consistent target specular reflectivity is added behind the transflective infrared target, so that the optical paths of the target blackbody and the background blackbody radiation capability are kept consistent, and the temperature difference precision of the temperature difference type infrared parallel light pipe can be improved due to higher specular reflectivity.
The technical scheme is as follows: in order to solve the technical problems, the high-precision temperature difference type infrared parallel light pipe comprises a target blackbody and a background blackbody which are arranged on a test platform, wherein the target blackbody and the background blackbody are connected with a temperature difference type blackbody controller, and radiant energy of the target blackbody is deflected by 90 degrees through an infrared deflection plane mirror and then transmitted through a transmission infrared target; the radiation energy of the background blackbody is reflected by the transparent and reflective infrared target reflecting surface, so that the optical paths of the target blackbody and the background blackbody are kept consistent, and the two parts of radiation energy are turned by the secondary reflector and the main reflector to realize the collimation radiation of the target and background temperature difference signals.
Preferably, the temperature difference type blackbody controller has a double-path temperature control function, adjusts the target and the background blackbody according to the set temperature difference, further generates a radiation signal with a certain temperature difference, and has a temperature difference range of-10 ℃ to +10 ℃ and a temperature difference control precision of 0.02 ℃.
Preferably, the infrared folded plane mirror has a size of 100mm×100mm, the mirror base material is copper, and the infrared reflectance is 0.95 or more in a mirror surface gold-plated film.
Preferably, the transflective infrared target is switched into the light path by a motor, the base material of the target is copper in accordance with the infrared folding plane reflector, the reflecting surface is a gold-plated film, and the infrared reflectivity is more than 0.95 in accordance with the infrared folding plane reflector 2.
Preferably, the main reflecting mirror and the secondary reflecting mirror form a light pipe optical system, the focal length of the system is 1500mm, the caliber is 200mm, and the view field is 1 degree.
Preferably, the radiating surface of the target blackbody is of a micro-cone structure, a high-emissivity super-black material coating is sprayed on the surface, the emissivity of the radiating surface reaches more than 0.98, the size of the radiating surface of the target blackbody is larger than the target size of the collimator, the temperature is controlled and regulated by the temperature difference blackbody controller 6, the temperature range is 10-80 ℃, and the temperature control precision is 0.01 ℃.
Preferably, the radiation surface of the background blackbody is of a micro-cone structure, the surface is sprayed with a high-emissivity super-black material coating, the emissivity of the radiation surface reaches more than 0.98, the size of the radiation surface of the target blackbody is larger than the target size of the collimator, the temperature is controlled and regulated by the temperature difference blackbody controller 6, and the temperature range is 10-80 ℃ and the temperature control precision is 0.01 ℃.
Preferably, the light outlet of the collimator is provided with a light-emitting parallelism detection device, the light-emitting parallelism detection device comprises an electric control parallel guide rail, an infrared camera and an industrial personal computer, the infrared camera is installed on the electric control parallel guide rail and is aligned to the light outlet of the collimator, the optical axis of the camera is as high as the optical axis of the collimator, the aperture of the camera is 30mm, the angular resolution is 0.02 DEG, the electric control parallel guide rail is controlled by the industrial personal computer to realize the movement of the infrared thermal imager within the effective stroke range of 200mm, and the industrial personal computer is provided with thermal imager acquisition software, and the detection precision of the light-emitting parallelism can be realized by utilizing a sub-pixel image quality analysis algorithm.
The calculation formula of the light-emitting parallelism is as follows:
α＝|n 1 -n 2 |×α 0 (1)
wherein: n is n 1 -a target image mass center pixel coordinate at one end of the infrared collimator;
n 2 -the other end of the infrared collimator is targeted at the center pixel coordinates of the image mass;
α 0 -the infrared collimator corresponds to an angle, in "units", of a single pixel;
alpha-parallelism value of infrared collimator, unit ".
In the invention, the camera moves from the left end to the right end of the light outlet, the target image of the corresponding light pipe will have displacement on the focal plane of the camera, namely the change of the pixels of the focal plane of the camera, the pixel difference is analyzed and then brought into a formula for calculation, and the parallelism value of the infrared collimator is obtained.
The beneficial effects are that: the high-precision temperature difference type infrared parallel light pipe has the following advantages:
1. the temperature difference type infrared collimator designed by the invention has higher temperature difference precision, and the temperature difference precision can reach +/-0.02 ℃ after optical path adjustment, so that the authenticity accuracy of the simulated target background is improved.
2. The high-precision temperature difference type infrared parallel light pipe provided by the invention can effectively improve the functional performance testing precision of infrared imaging devices such as an infrared imager, an infrared imaging guide head and the like.
Drawings
Fig. 1 is a schematic structural view of the present invention.
In the figure: 1 is an optical test platform; 2 is an infrared turning plane reflector; 3 is a transflective infrared target; 4 is a target blackbody; 5 is a main reflector; 6 is a temperature difference type blackbody controller; 7 is a background black body; 8 is a secondary mirror; 9 is an industrial personal computer; 10 is a translation guide rail; 11 is an infrared camera.
Detailed Description
The invention will be further described with reference to the accompanying drawings.
As shown in FIG. 1, the size of the radiating surface of the target blackbody 4 is 70mm multiplied by 70mm, the temperature range is 10-80 ℃, and the temperature control precision is 0.01 ℃; the size of the radiation surface of the background blackbody 7 is 70mm multiplied by 70mm, the temperature range is 10-80 ℃, and the temperature control precision is 0.01 ℃; the temperature difference type blackbody controller 6 has a double-path temperature control function, adjusts the target blackbody and the background blackbody 7 according to the set temperature difference, and further generates a radiation signal with a certain temperature difference; the size of the infrared turning plane reflector 2 is 100mm multiplied by 100mm, the base material of the reflector is copper, the infrared reflectivity is more than 0.95 in a mirror surface gold-plated film, the reflector forms an included angle of 45 degrees with a transmission target, and 90-degree turning of the radiant energy of the target blackbody 4 is realized and the light path is entered; the transflective infrared target 3 comprises a half-moon target, a round hole target, a four-bar target and the like, the light path can be switched by a motor control, the base material of the target is consistent with the infrared folding plane reflector 2, the reflecting surface is plated with a gold film, and the infrared reflectivity is consistent with the infrared folding plane reflector 2; the focal length of the infrared collimator optical system is 1500mm, the caliber is 200mm, the field angle is 2 degrees, and the collimation and the emergence of a target and a background target can be realized, so that the functional performance test work of an infrared imaging device is realized. In the light-emitting parallelism detection device, an industrial personal computer 9 controls an infrared camera 11 to acquire a collimator target image, the light-emitting parallelism of the infrared collimator is controlled by the industrial personal computer to drive an infrared camera to move from the left end to the right end of a light-emitting opening by a parallel guide rail 10, and the light-emitting parallelism of the infrared collimator is obtained by analyzing the offset of the image quality center of the infrared target image and calculating.
The target black body 4 is used for generating target source radiation energy; the background black body 7 is used for generating background radiation energy; the temperature difference type blackbody controller 6 is used for adjusting the target blackbody 4 and the background blackbody 7 to generate target background radiation with fixed temperature difference; the infrared turning plane reflector 2 is used for turning the radiant energy of the target blackbody 4 by 90 degrees and then transmitting the radiant energy through the hole of the transreflective infrared target 3, so that the optical paths of the target blackbody 4 and the background blackbody 7 are kept consistent; the infrared collimator optical system is used for collimating the radiant energy of the target blackbody 4 to generate an infinite target background signal with a certain temperature difference signal, so that the functional performance of the infrared imaging detection device is tested.
The foregoing is only a preferred embodiment of the invention, it being noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the invention.
Claims (7)
1. A high-precision temperature difference type infrared parallel light pipe is characterized in that: the infrared energy conversion testing device comprises a target blackbody and a background blackbody which are arranged on a testing platform, wherein the target blackbody and the background blackbody are connected with a temperature difference blackbody controller, and radiant energy of the target blackbody is converted by an infrared conversion plane reflector for 90 degrees and then transmitted through a transmission and reflection infrared target; the radiation energy of the background blackbody is reflected by the transparent and reflective infrared target reflecting surface, so that the optical paths of the target blackbody and the background blackbody are kept consistent, and the two parts of radiation energy are turned by the secondary reflector and the main reflector to realize the collimation radiation of the target and background temperature difference signals; the transflective infrared target is switched into a light path by a motor, the base material of the target is consistent with the infrared folding plane reflector, the base material is copper, the reflecting surface is a gold-plated film, and the infrared reflectivity is consistent with the infrared folding plane reflector and is more than 0.95; the infrared reflection target is a round hole target, and the infrared reflection plane reflector is used for reflecting the radiant energy of the target blackbody by 90 degrees and then transmitting the infrared reflection target hole.
2. The high precision temperature differential infrared parallel light pipe of claim 1, wherein: the temperature difference type blackbody controller has a double-path temperature control function, adjusts a target and a background blackbody according to the set temperature difference, further generates a radiation signal with a certain temperature difference, and has a temperature difference range of-10 ℃ to +10 ℃ and a temperature difference control precision of 0.02 ℃.
3. The high precision temperature differential infrared parallel light pipe of claim 1, wherein: the infrared turn plane reflector has a size of 100mm×100mm, the reflector substrate material is copper, and the infrared reflectivity is above 0.95 on the gold-plated film of the mirror surface.
4. The high precision temperature differential infrared parallel light pipe of claim 1, wherein: the main reflector and the secondary reflector form a light pipe optical system, the focal length of the system is 1500mm, the caliber is 200mm, and the view field is 1 degree.
5. The high precision temperature differential infrared parallel light pipe of claim 1, wherein: the radiating surface of the target blackbody is of a micro-cone structure, the surface is sprayed with a high-emissivity super-black material coating, the emissivity of the radiating surface reaches more than 0.98, the size of the radiating surface of the target blackbody is larger than the target size of the collimator, the temperature is controlled and regulated by a temperature difference blackbody controller (6), the temperature range is 10-80 ℃, and the temperature control precision is 0.01 ℃.
6. The high precision temperature differential infrared parallel light pipe of claim 1, wherein: the radiation surface of the background blackbody is of a micro-cone structure, the surface is sprayed with a high-emissivity super-black material coating, the emissivity of the radiation surface reaches more than 0.98, the size of the radiation surface of the target blackbody is larger than the target size of the collimator, the temperature is controlled and regulated by a temperature difference blackbody controller (6), the temperature range is 10-80 ℃, and the temperature control precision is 0.01 ℃.
7. The high precision temperature differential infrared parallel light pipe of claim 1, wherein: the light outlet of the collimator is provided with a light-emitting parallelism detection device, the light-emitting parallelism detection device comprises an electric control parallel guide rail, an infrared camera and an industrial personal computer, the infrared camera is installed on the electric control parallel guide rail and is aligned to the light outlet of the collimator, the optical axis of the camera is as high as the optical axis of the collimator, the caliber of the camera is 30mm, the angular resolution is 0.02 DEG, and the industrial personal computer controls the electric control parallel guide rail to realize the movement of the infrared thermal imager within the range of 200mm of the effective stroke.
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999051930A1 (en) * | 1998-04-03 | 1999-10-14 | Raytheon Company | Lab devices to simulate infrared scenes with hot point targets against given temperature backgrounds |
| CN103256985A (en) * | 2013-02-28 | 2013-08-21 | 北京振兴计量测试研究所 | Transmission-type infrared temperature difference standard source applied to wide-temperature-range environment |
| CN103900422A (en) * | 2014-04-21 | 2014-07-02 | 哈尔滨工业大学 | Multi-band target/background generating device |
| CN104075656A (en) * | 2014-06-25 | 2014-10-01 | 广东工业大学 | Collimation deviation detection and elimination method for laser interferometer |
| CN106248105A (en) * | 2016-09-14 | 2016-12-21 | 中国科学院西安光学精密机械研究所 | A kind of autocollimation theodolite is double sights poor calibration system |
| CN206161283U (en) * | 2016-11-03 | 2017-05-10 | 西安北方光电科技防务有限公司 | A debugging detector for infrared corner reflector |
| CN109164480A (en) * | 2018-10-15 | 2019-01-08 | 北京环境特性研究所 | A kind of multiple reflections infrared sensor caliberating device and method |
| CN109387288A (en) * | 2018-11-09 | 2019-02-26 | 中国航空工业集团公司洛阳电光设备研究所 | A kind of width temperature section infrared acquisition sensitivity test equipment |
| CN208588391U (en) * | 2018-08-01 | 2019-03-08 | 无锡市星迪仪器有限公司 | A kind of more plain shaft parallelism calibrating installations and system |
| CN111678609A (en) * | 2020-06-11 | 2020-09-18 | 上海卫星装备研究所 | High-precision blackbody cavity and manufacturing method thereof |
-
2021
- 2021-08-19 CN CN202110952457.2A patent/CN113639969B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999051930A1 (en) * | 1998-04-03 | 1999-10-14 | Raytheon Company | Lab devices to simulate infrared scenes with hot point targets against given temperature backgrounds |
| CN103256985A (en) * | 2013-02-28 | 2013-08-21 | 北京振兴计量测试研究所 | Transmission-type infrared temperature difference standard source applied to wide-temperature-range environment |
| CN103900422A (en) * | 2014-04-21 | 2014-07-02 | 哈尔滨工业大学 | Multi-band target/background generating device |
| CN104075656A (en) * | 2014-06-25 | 2014-10-01 | 广东工业大学 | Collimation deviation detection and elimination method for laser interferometer |
| CN106248105A (en) * | 2016-09-14 | 2016-12-21 | 中国科学院西安光学精密机械研究所 | A kind of autocollimation theodolite is double sights poor calibration system |
| CN206161283U (en) * | 2016-11-03 | 2017-05-10 | 西安北方光电科技防务有限公司 | A debugging detector for infrared corner reflector |
| CN208588391U (en) * | 2018-08-01 | 2019-03-08 | 无锡市星迪仪器有限公司 | A kind of more plain shaft parallelism calibrating installations and system |
| CN109164480A (en) * | 2018-10-15 | 2019-01-08 | 北京环境特性研究所 | A kind of multiple reflections infrared sensor caliberating device and method |
| CN109387288A (en) * | 2018-11-09 | 2019-02-26 | 中国航空工业集团公司洛阳电光设备研究所 | A kind of width temperature section infrared acquisition sensitivity test equipment |
| CN111678609A (en) * | 2020-06-11 | 2020-09-18 | 上海卫星装备研究所 | High-precision blackbody cavity and manufacturing method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 低温红外温差源的设计与研究;吕宁;《CNKI硕士电子期刊》(第第2期期);正文第28-30、33、54页 * |
| 吕宁.低温红外温差源的设计与研究.《CNKI硕士电子期刊》.2018,(第第2期期),正文第28-30、33、54页. * |
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