CN111044150A - Irradiance scaling device and irradiance scaling system - Google Patents
Irradiance scaling device and irradiance scaling system Download PDFInfo
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- CN111044150A CN111044150A CN201911335574.3A CN201911335574A CN111044150A CN 111044150 A CN111044150 A CN 111044150A CN 201911335574 A CN201911335574 A CN 201911335574A CN 111044150 A CN111044150 A CN 111044150A
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- 238000005086 pumping Methods 0.000 claims abstract description 22
- 238000009434 installation Methods 0.000 claims description 16
- 230000007246 mechanism Effects 0.000 claims description 12
- 238000000605 extraction Methods 0.000 claims description 10
- 230000008685 targeting Effects 0.000 claims description 7
- 238000005259 measurement Methods 0.000 abstract description 13
- 238000004088 simulation Methods 0.000 abstract description 13
- 238000010586 diagram Methods 0.000 description 12
- 238000000034 method Methods 0.000 description 10
- 230000005855 radiation Effects 0.000 description 8
- 230000003287 optical effect Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 230000003595 spectral effect Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
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- 238000010438 heat treatment Methods 0.000 description 1
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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
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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
- G01J1/00—Photometry, e.g. photographic exposure meter
-
- 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
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/02—Details
- G01J1/0295—Constructional arrangements for removing other types of optical noise or for performing calibration
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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
- G01J5/80—Calibration
Abstract
The embodiment of the invention discloses an irradiance calibration device and an irradiance calibration system. The irradiance scaling device comprises: a housing having a vacuum pumping port for creating a vacuum environment within the housing; a solar simulated light source disposed on one side within the housing; a solar absolute radiometer disposed on another side within the housing to scale irradiance of the solar analog light source. The embodiment of the invention is provided with the solar simulation light source positioned on one side of the shell and the solar radiometer positioned on the other side, and the vacuum pumping hole is formed in the shell, so that a vacuum environment can be generated in the shell, and the calibration precision of irradiance measurement is improved.
Description
Technical Field
The invention belongs to the field of optical radiation measurement, and particularly relates to an irradiance calibration device and an irradiance calibration system.
Background
The satellite platform is used for observing the total solar irradiance in space for a long time, a solar radiation observation sequence is established, and key data support can be provided for climate change research. Radiometric calibration before emission is an important link in the development process of space optical remote sensing instruments. The method is limited by the problems of a calibration light source and the like, and the radiation calibration before the emission of the solar absolute radiometer mainly adopts an external field comparison calibration scheme.
However, the ground-based solar light source adopted for outfield calibration is affected by atmospheric conditions such as cloud layers, sand and dust and the like, and the stability is remarkably reduced. The external field calibration is performed under the normal pressure environment, and is different from the vacuum environment in actual on-track operation, so that the introduced vacuum normal pressure correction coefficient is difficult to correct, and the system error is increased. The WRR reference source is a weighted average result and cannot be directly traced to the current internationally recognized reference for cryoradiometers. Therefore, the external field calibration precision is difficult to further improve, and the requirement of a high-precision solar radiation instrument monitor on the calibration precision cannot be met.
Disclosure of Invention
In view of this, embodiments of the present invention provide an irradiance calibration apparatus and an irradiance calibration system, which can improve the calibration accuracy of irradiance measurement.
A first aspect provides an irradiance scaling device, comprising: the shell is provided with a vacuum pumping hole and is used for generating a vacuum environment in the shell; a solar simulation light source disposed at one side within the housing; a solar absolute radiometer disposed on the other side within the housing for calibrating irradiance of the solar analog light source.
Optionally, the irradiance scaling device further comprises: the low-temperature absolute radiometer is arranged on the other side in the shell and is arranged in parallel with the solar absolute radiometer, and the inlet direction of the low-temperature absolute radiometer is consistent with the inlet direction of the solar absolute radiometer.
Optionally, the solar simulation light source is implemented by a laser generation device, wherein the laser generation device at least includes a fast scanner and a post-collimator, and a direction of the post-collimator is consistent with an inlet direction of the low-temperature absolute radiometer and an inlet direction of the solar absolute radiometer.
Optionally, the direction of the post-collimator is aligned with an inlet direction of the low temperature absolute radiometer or the solar absolute radiometer.
Optionally, the method further comprises: the analog light source switching mechanism comprises a collimator mounting part and a collimator switching part, wherein the rear collimator is mounted on the collimator mounting part, and
the collimator switching part is fixedly connected with the collimator mounting part, and switches the collimator mounting part between a first position and a second position, so that at the first position, the direction of the rear collimator is aligned with the inlet direction of the solar absolute radiometer, and at the second position, the direction of the rear collimator is aligned with the inlet direction of the low-temperature absolute radiometer.
Optionally, the collimator switching part is a first rotating member in the form of a tube, and the vacuum pumping port passes through the tube of the first rotating member and is adapted to an inlet portion of the pumping device.
Optionally, the radiometer switching mechanism comprises a radiometer mounting part and a radiometer switching part, the radiometer mounting part comprises a first mounting part and a second mounting part, wherein the solar absolute radiometer is fixed on the first mounting part, the low-temperature absolute radiometer is fixed on the second mounting part, and
the radiometer switching part is fixedly connected with the radiometer installation part, and switches between a third position and a fourth position the first installation part and the second installation part, so that when the first installation part is at when the third position is located, the direction of the rear collimator is aligned with the inlet direction of the solar absolute radiometer, and when the first installation part is at when the fourth position is located, the direction of the rear collimator is aligned with the inlet direction of the low-temperature absolute radiometer.
Optionally, the radiometer switching part is a second rotating part in the form of a tube, and the vacuum pumping port passes through the tube of the second rotating part and is adapted to the inlet portion of the pumping device.
Optionally, the housing is a cuboid.
In a second aspect, an irradiance targeting system is provided that includes an exhaust and an irradiance targeting device according to the first aspect. The air exhaust device is matched with the irradiance calibration device.
The embodiment of the invention is provided with the solar simulation light source positioned on one side of the shell and the solar radiometer positioned on the other side, and the vacuum pumping hole is formed in the shell, so that a vacuum environment can be generated in the shell, and the calibration precision of irradiance measurement is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
FIG. 1 is a schematic block diagram of an irradiance scaling apparatus provided by a first embodiment of the present invention;
FIG. 2 is a schematic diagram of a method for scaling total solar irradiance according to another embodiment of the present invention;
FIG. 3 is a schematic block diagram of an irradiance scaling apparatus provided by a second embodiment of the present invention;
FIG. 4 is a schematic block diagram of an irradiance scaling device provided by a third embodiment of the present invention;
FIG. 5 is a schematic block diagram of an irradiance scaling apparatus provided by a fourth embodiment of the present invention;
fig. 6 is a schematic block diagram of an irradiance scaling system provided by a fifth embodiment of the present invention.
Reference numerals: irradiance scaling devices 100, 200, 300, 400, 500; irradiance scaling means 520; a laser generating device 510; an air extraction device 530; a housing 10; a vacuum pumping port 11; a solar simulated light source 12; a solar absolute radiometer 13; a low temperature absolute radiometer 24; a post-collimator 25; an analog light source switching mechanism 26; a collimator mounting portion 261; a collimator switching unit 262; a radiometer switching mechanism 36; a radiometer mounting portion 361; a first mounting portion 3611; a second mounting portion 3612; the radiometer switching section 362; a radiometer switching mechanism 46; a radiometer mounting section 461; first mounting portion 4611; second mounting portion 4612; a radiometer switching section 462; an analog light source switching mechanism 47; a collimator mounting part 471; the collimator switching unit 472.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.
In order to explain the technical means of the present invention, the following description will be given by way of specific examples.
Fig. 1 is a schematic block diagram of an irradiance scaling apparatus provided by a first embodiment of the present invention. The irradiance scaling device 100 of fig. 1 includes:
a housing 10 having a vacuum pumping port 11 for generating a vacuum atmosphere within the housing 10;
a solar simulation light source 12 disposed at one side within the case 10;
a solar absolute radiometer 13, which is arranged on the other side within the housing 10, in order to scale the irradiance of the solar simulation light source 12.
It should be understood that the housing 10 may have any shape, and the embodiment of the present invention is not limited thereto. The solar analog light source 12 may exit a post collimator (not shown) for detection and calibration.
It will also be appreciated that the solar simulated light source 12 may be any, preferably provided by a laser generating device (not shown). The vacuum suction opening 11 can be adapted in any way to an external vacuum suction device. In addition, a sealing piece can be arranged at the vacuum pumping hole.
Specifically, the calibration apparatus of the embodiment of the present invention essentially adopts a calibration method of total solar irradiance that is traceable to the international basic unit System (SI). The embodiment of the invention is provided with the solar simulation light source positioned on one side of the shell and the solar radiometer positioned on the other side, and the vacuum pumping hole is formed in the shell, so that a vacuum environment can be generated in the shell, and the calibration precision of irradiance measurement is improved.
In one possible embodiment, the irradiance targeting device 100 further comprises: and a low-temperature absolute radiometer 24 disposed on the other side in the housing, the low-temperature absolute radiometer 24 being disposed in parallel with the solar absolute radiometer 13, an entrance direction of the low-temperature absolute radiometer 24 being coincident with an entrance direction of the solar absolute radiometer 13. It should be appreciated that the low temperature absolute radiometer 24 is one type of irradiance reference used to establish high precision traceability to the SI. The low temperature absolute radiometer traceable to SI of the present embodiment serves as a reference source. As a preferred embodiment, the low-temperature absolute radiometer is an electric alternative absolute radiometer operating at low temperatures, ranging from 4K to 20K.
The direction of the post-collimator, the inlet direction of the low-temperature absolute radiometer and the inlet direction of the solar absolute radiometer can be different or consistent. The solar simulated light source 12 and the solar absolute radiometer 13 are located on both sides of the housing 10.
The core detector in the low-temperature absolute radiometer is a low-temperature absolute radiometer and can comprise a blackbody cavity, a main heat sink, a temperature control heat sink, a low-temperature platform and a thermal connection assembly.
It should be understood that the working principle of the method is that the equivalence of electric heating and incident light radiation heating in a low-temperature and superconducting state is utilized, the incident light power is calibrated through electric power which can be accurately measured, and the measurement result is directly traced to SI, which is an internationally recognized light radiation measurement standard. And designing a low-temperature absolute radiation diaphragm assembly, realizing the conversion from power measurement to irradiance measurement through a precision diaphragm, and establishing a high-precision irradiance reference source.
Fig. 2 is a schematic diagram of a method for scaling total solar irradiance according to another embodiment of the present invention. As shown in fig. 2, with the calibration device according to the embodiment of the present invention, an "end-to-end" direct comparison between the solar absolute radiometer and the low-temperature absolute radiometer can be realized in the vacuum common optical path device, and the irradiance scale is directly traced to SI.
In one possible embodiment, the solar simulated light source is implemented by a laser generating device that includes at least a fast scanner and a post-collimator, depending on the irradiance scaling device 100.
It is understood that the laser generating device may further include an attenuator, a polarizer, a spatial filter, a power stabilizer to improve power stability. Therefore, a solar simulation light source is established by adopting a laser scanning technology. After entering the fast scanner and the post collimator, the emergent light is modulated into parallel light beams with high stability and high spatial uniformity. Therefore, the laser scanning technology is utilized to establish the calibration light source with high stability and high spatial uniformity.
Further, the direction of the post-collimator coincides with the inlet direction of the low-temperature absolute radiometer and the inlet direction of the solar absolute radiometer, and the direction of the post-collimator is aligned with the inlet direction of one of the low-temperature absolute radiometer and the solar absolute radiometer. Thus, the parallel light beam can cover the area of the main diaphragm of the solar absolute radiometer and the low-temperature absolute radiometer.
Fig. 3 is a schematic block diagram of an irradiance scaling device provided by a second embodiment of the present invention. Compared with the first embodiment, the irradiance scaling device 200 of fig. 3 further comprises a low-temperature absolute radiometer 24 which is arranged at the other side in the housing, the low-temperature absolute radiometer 24 is arranged in parallel with the solar absolute radiometer 13, and the inlet direction of the low-temperature absolute radiometer 24 is consistent with the inlet direction of the solar absolute radiometer 13, so that the radiometer is directly traced to the SI by using the low-temperature absolute radiometer as a reference source, and the problem of low precision of the reference source is solved.
The solar simulation light source 12 is realized by a laser generating device (not shown), so that the solar simulation light source is established by utilizing laser and fast scanning technology, and the problem of light source stability is solved.
The laser generating device at least comprises a fast scanner and a post-collimator 25, and the direction of the post-collimator 25 is consistent with the inlet direction of the low-temperature absolute radiometer 24 and the inlet direction of the solar absolute radiometer 13. The simulated light source switching mechanism 26 includes a collimator mounting portion 261 and a collimator switching portion 262, and the post-collimator 25 is mounted on the collimator mounting portion 261. The collimator switching portion 262 is connected to the collimator mounting portion 261 in a fixed manner, and switches the collimator mounting portion between a first position a and a second position B such that at the first position a, the direction of the post-collimator 25 is aligned with the inlet direction of the solar absolute radiometer 13, and at the second position B, the direction of the post-collimator 25 is aligned with the inlet direction of the low-temperature absolute radiometer 24, whereby direct comparison of the solar radiometer and the low-temperature absolute radiometer is achieved using the vacuum common-path comparison device, and the problem of calibration and difference in on-orbit operating environment is solved.
In one possible embodiment, the collimator switch is a first rotating member in the form of a tube, with the vacuum pumping ports passing through the tube of the first rotating member and fitting with the inlet portion of the pumping device, depending on the irradiance calibration device 200.
In addition, a sealing element can be arranged between the first rotating member and the inlet part of the air extraction device.
The calibration device of the present embodiment may be presented as a vacuum common optical path device to realize the direct "end-to-end" comparison of the solar absolute radiometer and the low temperature absolute radiometer. As shown in fig. 2, the solar absolute radiometer and the low-temperature absolute radiometer are placed in the vacuum common light path device, the solar absolute radiometer measures the solar simulation light source, and the same solar simulation light source is calibrated by the low-temperature absolute radiometer through the rotation of the first rotating member (262). Finally, the solar absolute radiometer can be calibrated by comparing the measurement results, so that high-precision traceable irradiance calibration of the solar absolute radiometer is realized.
In addition, the low-temperature absolute radiometer in the embodiment of the invention is a reference source, and is different from a normal-temperature radiometer which can only be used as a transmission radiometer.
It should also be understood that the application band of this patent is preferably the full spectral band, covering the spectral range of 0.2-35 μm for calibration of solar total irradiance instruments.
Fig. 4 is a schematic block diagram of an irradiance scaling device provided by a third embodiment of the present invention. Compared to the second embodiment, the irradiance scaling device 300 of fig. 4 comprises at least a fast scanner and a post-collimator 25, and the direction of the post-collimator 25 is consistent with the inlet direction of the low temperature absolute radiometer 24 and the inlet direction of the solar absolute radiometer 13. Radiometer switching mechanism 36 includes a radiometer mounting unit 361 and a radiometer switching unit 362, radiometer mounting unit 361 includes a first mounting unit 3611 and a second mounting unit 3612, wherein solar absolute radiometer 13 is fixed to first mounting unit 3611, and low-temperature absolute radiometer 24 is fixed to second mounting unit 3612. The radiometer switching section 362 is connected with the radiometer mounting section 361 in a fixed manner, and switches the first mounting section 3611 and the second mounting section 3612 between the third position C and the fourth position D such that when the first mounting section 3611 is at the third position C, the direction of the post-collimator 25 is aligned with the entrance direction of the solar absolute radiometer 13, and when the first mounting section 3611 is at the fourth position D, the direction of the post-collimator 25 is aligned with the entrance direction of the low-temperature absolute radiometer 24. The radiometer switching section is a second rotating member in the form of a tube, and the vacuum pumping port 11 passes through the tube of the second rotating member and is fitted to the inlet section of the pumping device (not shown).
In one possible embodiment, the housing is rectangular parallelepiped according to the irradiance scaling device 300. In addition, a seal may be provided between the second rotating member and the inlet portion of the air extraction device.
Fig. 5 is a schematic block diagram of an irradiance scaling device provided by a fourth embodiment of the present invention. The irradiance scaling device 400 of fig. 5 comprises that compared to the second embodiment, the solar simulated light source 12 is realized by a laser generating device (not shown), wherein the laser generating device comprises at least a fast scanner and a post-collimator 25, and the direction of the post-collimator 25 coincides with the inlet direction of the low temperature absolute radiometer 24 and the inlet direction of the solar absolute radiometer 13. The radiometer switching mechanism 46 includes a radiometer mounting portion 461 and a radiometer switching portion 462 thereof, the radiometer mounting portion 461 includes a first mounting portion 4611 and a second mounting portion 4612, wherein the solar absolute radiometer 13 is fixed to the first mounting portion 4611, and the low-temperature absolute radiometer 24 is fixed to the second mounting portion 4612. The radiometer switching section 462 is connected in a fixed manner with the radiometer mounting section 461, and switches the first mounting section and the second mounting section between the third position C and the fourth position D such that the direction of the post-collimator 25 is aligned with the inlet direction of the solar absolute radiometer 13 when the first mounting section is at the third position C, and the direction of the post-collimator 25 is aligned with the inlet direction of the low-temperature absolute radiometer 24 when the first mounting section is at the fourth position D. The radiometer switch 461 is a second rotating piece in the form of a tube, and the vacuum pumping port 411 passes through the tube of the second rotating piece and fits into the inlet of a pumping device (not shown). The analog light source switching mechanism 47 includes a collimator mounting portion 471 and a collimator switching portion 472, and the rear collimator 471 is mounted on the collimator mounting portion 471.
The collimator switching portion 472 is fixedly connected to the collimator mounting portion 471, and switches the collimator mounting portion between a first position a and a second position B such that, at the first position a, the direction of the post-collimator 25 is aligned with the inlet direction of the solar absolute radiometer 13, and, at the second position B, the direction of the post-collimator 25 is aligned with the inlet direction of the low-temperature absolute radiometer 24. The collimator switching part 471 is a first rotating part in the form of a tube, and the vacuum pumping port 412 passes through the tube of the first rotating part and is adapted to the inlet of the air pumping device.
It should be appreciated that in one possible embodiment, the housing is rectangular parallelepiped according to the irradiance targeting device 400. In addition, a sealing element can be arranged between the first rotating member and the inlet part of the air extraction device. A seal may also be provided between the second rotating member and the inlet portion of the air extractor.
Fig. 6 is a schematic block diagram of an irradiance scaling system provided by a fifth embodiment of the present invention. The irradiance targeting system 500 of FIG. 6 includes an irradiance targeting device 520, a laser generating device 510, and an air extraction device 530.
Specifically, the calibration system of the embodiment of the invention essentially adopts a calibration method of the total solar irradiance which can be traced to the SI. The embodiment of the invention is provided with the solar simulation light source positioned on one side of the shell and the solar radiometer positioned on the other side, and the vacuum pumping hole is formed in the shell, so that a vacuum environment can be generated in the shell, and the calibration precision of irradiance measurement is improved.
Test results
By adopting the scheme of the embodiment of the invention, the uncertainty of the test experiment prototype on the measurement of the laser power with the magnitude of 0.4mW is 0.029%. If a 5mm diameter primary diaphragm is used, the total solar irradiance is on the order of 30 mW. Namely, the high-precision measurement of the total solar irradiance is realized through the transformation of the low-temperature absolute radiation detector and the diaphragm assembly.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.
Claims (10)
1. An irradiance targeting device, comprising:
a housing having a vacuum pumping port for creating a vacuum environment within the housing;
a solar simulated light source disposed on one side within the housing;
a solar absolute radiometer disposed on the other side within the housing for scaling irradiance of the solar analog light source.
2. The irradiance scaling fixture of claim 1, further comprising: the low-temperature absolute radiometer is arranged on the other side in the shell and is arranged in parallel with the solar absolute radiometer, and the inlet direction of the low-temperature absolute radiometer is consistent with the inlet direction of the solar absolute radiometer.
3. Irradiance calibration device according to claim 2, characterized in that the solar-simulated light source is realized by a laser generation device, wherein the laser generation device comprises at least a fast scanner and a post-collimator, the direction of which coincides with the inlet direction of the low-temperature absolute radiometer and the inlet direction of the solar absolute radiometer.
4. Irradiance scaling device according to claim 3, characterized in that the direction of the post-collimator is aligned with the inlet direction of the low-temperature absolute radiometer or the solar absolute radiometer.
5. The irradiance scaling device of claim 4, further comprising: the analog light source switching mechanism comprises a collimator mounting part and a collimator switching part, wherein the rear collimator is mounted on the collimator mounting part, and
the collimator switching part is fixedly connected with the collimator mounting part, and switches the collimator mounting part between a first position and a second position, so that at the first position, the direction of the rear collimator is aligned with the inlet direction of the solar absolute radiometer, and at the second position, the direction of the rear collimator is aligned with the inlet direction of the low-temperature absolute radiometer.
6. Irradiance calibration device according to claim 5, characterized in that the collimator switching section is a first rotating member in the form of a tube, the vacuum extraction opening passing through the tube of the first rotating member and being adapted to the inlet section of the extraction device.
7. The irradiance scaling device of claim 4, further comprising: radiometer switching mechanism, including radiometer installation department and radiometer switching part, the radiometer installation department includes first installation department and second installation department, wherein, the absolute radiometer of sun is fixed on the first installation department, the absolute radiometer of low temperature is fixed on the second installation department to
The radiometer switching part is fixedly connected with the radiometer installation part, and switches between a third position and a fourth position the first installation part and the second installation part, so that when the first installation part is at when the third position is located, the direction of the rear collimator is aligned with the inlet direction of the solar absolute radiometer, and when the first installation part is at when the fourth position is located, the direction of the rear collimator is aligned with the inlet direction of the low-temperature absolute radiometer.
8. Irradiance calibration device according to claim 7, characterized in that the radiometer switching section is a second rotating part in the form of a tube, the vacuum extraction opening passing through the tube of the second rotating part and being adapted to the inlet section of the extraction device.
9. Irradiance calibration device according to any of claims 1 to 8, characterized in that the housing is a cuboid.
10. Irradiance calibration system, characterized in that it comprises air extraction means adapted to the irradiance calibration means, and the irradiance calibration means according to any one of claims 1 to 9.
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| CN201911335574.3A CN111044150A (en) | 2019-12-23 | 2019-12-23 | Irradiance scaling device and irradiance scaling system |
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| CN201911335574.3A CN111044150A (en) | 2019-12-23 | 2019-12-23 | Irradiance scaling device and irradiance scaling system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103256976A (en) * | 2013-03-20 | 2013-08-21 | 中国科学院安徽光学精密机械研究所 | Low-temperature absolute radiometer absolute spectral responsivity calibration method and experimental apparatus |
| CN110470400A (en) * | 2018-05-09 | 2019-11-19 | 北京振兴计量测试研究所 | Spectral radiance responsiveness measuring system |
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2019
- 2019-12-23 CN CN201911335574.3A patent/CN111044150A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103256976A (en) * | 2013-03-20 | 2013-08-21 | 中国科学院安徽光学精密机械研究所 | Low-temperature absolute radiometer absolute spectral responsivity calibration method and experimental apparatus |
| CN110470400A (en) * | 2018-05-09 | 2019-11-19 | 北京振兴计量测试研究所 | Spectral radiance responsiveness measuring system |
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