CN213813993U - Integrating sphere lamp light source device for radiation calibration of satellite-borne low-light-level imager - Google Patents
Integrating sphere lamp light source device for radiation calibration of satellite-borne low-light-level imager Download PDFInfo
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- CN213813993U CN213813993U CN202022785067.4U CN202022785067U CN213813993U CN 213813993 U CN213813993 U CN 213813993U CN 202022785067 U CN202022785067 U CN 202022785067U CN 213813993 U CN213813993 U CN 213813993U
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Abstract
The utility model provides an integrating sphere lamp light source device for spaceborne shimmer imager radiometric calibration, includes the support frame, installs the integrating sphere on the support frame, has seted up the light-emitting window on the spheroid of integrating sphere, and the inside front hemisphere of integrating sphere has evenly arranged the light source unit through multiunit water-cooling lamp stand, and the water-cooling lamp stand is connected with the heat dissipation unit of configuration outside the integrating sphere, and the other opening of light-emitting window is equipped with interface, external monitoring unit. The monitoring unit comprises a spectral radiometer and a stability detector. The device is suitable for night radiation calibration of the satellite-borne low-light-level imager under the external field condition.
Description
Technical Field
The utility model relates to an integrating sphere lamp light source device for spaceborne shimmer imager radiometric calibration belongs to the remote sensing technology field.
Background
The satellite-borne low-light imager has strong environment detection capability, but due to the huge radiation dynamic range, the satellite-borne low-light imager poses certain challenges for night calibration.
At present, a glimmer calibration method based on stable radiation of a ground lamp light source is started at home and abroad, by calculating uplink radiation reaching the top of an atmospheric layer in emission of the ground lamp light source, compared with an actual observation value of a satellite, the glimmer calibration method can theoretically reduce moon interference and realize high-precision glimmer radiometric calibration.
Non-patent documents: cao C, Bai Y, Quantitative analysis of VIIRS DNB bright light point source for light power estimation and stability monitoring [ J ] remove sensing, 2014, 6(12): 11915-11935 (VIIRS daytime and nighttime point light source Quantitative analysis for light power estimation and stability monitoring) relates to the use of existing ground light sources such as bridge lights, ship lights and the like as the light source targets for monitoring the satellite-borne low-light imager, but the radiation calibration of the satellite-borne low-light imager is influenced because the existing light sources have the defects of unstable luminous power, difficult measurement of spectral characteristics, no isotropy and the like.
Disclosure of Invention
An object of the utility model is to overcome not enough among the prior art, provide an integrating sphere lamp light source device for spaceborne shimmer imager radiometric calibration, can provide the lamp light source for the radiation of spaceborne shimmer imager, can accurately acquire the emergent radiation of lamp light source and monitor radiation stability.
In order to achieve the above object, the utility model provides an integrating sphere lamp light source device for spaceborne shimmer imager radiometric calibration, including the support frame, install the integrating sphere on the support frame, the light-emitting window has been seted up on the integrating sphere spheroid, the inside preceding hemisphere of integrating sphere has evenly arranged light source unit through multiunit water-cooling lamp stand, the water-cooling lamp stand is connected with the heat dissipation unit of configuration outside the integrating sphere, the other opening of light-emitting window is equipped with interface, external monitoring unit.
Further, the light outlet is a square opening.
Further, the light source unit is a plurality of groups of LED light emitting units.
Furthermore, the water-cooling lamp holder is fixed on the integrating sphere, and a half-circle arc-shaped light barrier is surrounded on the outer ring of the water-cooling lamp holder at the inner part of the integrating sphere.
Further, the installation position of the light source unit is 65 ° from the center normal of the light outlet.
Furthermore, the heat dissipation unit is a water cooling tank and is used for dynamically maintaining the constant temperature in the integrating sphere.
Preferably, the refrigerant fluid of the water-cooled tank flows through the water-cooled lamp holder to take away heat of the light source unit.
Further, the monitoring unit comprises a spectral radiometer for real-time quantitative detection of the spectral distribution of the outgoing radiation.
Further, the spectrum radiometer can detect the spectrum range to cover the spectrum range of the satellite-borne micro-light imager.
Further, the monitoring unit further comprises a stability monitor for monitoring stability of the emergent radiation.
Compared with the prior art, the utility model discloses the beneficial effect who reaches:
the utility model discloses an integrating sphere lamp light source device for spaceborne shimmer imager radiometric calibration, the front hemisphere inside the integrating sphere is evenly provided with light source units through a water-cooling lamp holder, and the light source units can emit uniform light radiation in all directions at a light outlet through the reflection of the inner wall of the integrating sphere;
the utility model discloses an integrating sphere lamp light source device for spaceborne glimmer imager radiometric calibration, the light-emitting port is provided with an interface, and is externally connected with a monitoring unit, including a spectrum radiometer and a stability detector, and the spectrum distribution of emergent radiation can be quantitatively detected in real time and the stability of emergent radiation can be monitored;
the utility model discloses an integrating sphere lamp light source device for spaceborne shimmer imager radiometric calibration, the heat dissipation unit is connected to the water-cooling lamp stand, can dynamically maintain constant temperature in the integrating sphere, prevents that light source unit temperature from rising to influence the emergent radiation.
Drawings
Fig. 1 is a schematic structural diagram of an integrating sphere lamp light source device for radiometric calibration of a satellite-borne low-light-level imager according to an embodiment of the present invention;
fig. 2 is a schematic view of an integrating sphere installation of an integrating sphere lamp light source device for radiometric calibration of a satellite-borne low-light-level imager according to an embodiment of the present invention;
fig. 3 is a schematic installation diagram of a light source unit of an integrating sphere lamp light source device for radiometric calibration of a satellite-borne low-light-level imager provided by an embodiment of the utility model.
In the figure: 1. an integrating sphere; 2. a light outlet; 3. a support frame; 4. a spectral radiometer; 5. a stability detector; 6. a water cooling tank; 7. a light source unit; 8. a water-cooled lamp base.
Detailed Description
The present invention will be further described with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used merely to describe distinctions and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated.
As shown in fig. 1, the utility model relates to an integrating sphere lamp light source device for spaceborne shimmer imager radiometric calibration, including support frame 3, install integrating sphere 1 on the support frame 3, seted up light-emitting window 2 on the integrating sphere 1 spheroid, light source unit 7 has evenly been arranged through multiunit water-cooling lamp stand 8 to the inside preceding hemisphere of integrating sphere 1, and water-cooling lamp stand 8 is connected with the heat dissipation unit of configuration outside integrating sphere 1, and 2 side openings in light-emitting window are equipped with the interface, external monitoring unit.
As shown in FIG. 2, the supporting frame 3 is made of angle steel by welding, can be stably placed on a horizontal ground, and has a length of 865mm, a width of 500mm and a height of 650 mm. The inner diameter of the integrating sphere 1 is 600mm, and the light outlet 2 is a square with the side length of 250mm and is arranged on the central normal of the rear hemisphere of the integrating sphere 1.
As shown in fig. 3, a plurality of groups of water-cooled lamp holders 8 are uniformly installed on the sphere of the front hemisphere of the integrating sphere 1, and the light source unit 7 is installed in a slot of the water-cooled lamp holder 8 at the inner side of the sphere of the integrating sphere 1. The outer ring of the water-cooled lamp holder 8 at the inner part of the sphere of the integrating sphere 1 is surrounded by a half-circle arc-shaped light barrier. The light source unit 7 is an LED light emitting unit with power of 12 to 300W, and the central wavelength is 670 nm. As shown in fig. 2, the LED light emitting units inside the integrating sphere 1 are uniformly arranged at intervals of 30 ° in the front hemisphere, and the installation position is 65 ° from the normal line of the center of the light outlet 2. The light radiation of the light source unit 7 is reflected by the inner wall of the integrating sphere 1, and can emit uniform light radiation in all directions at the light outlet 2.
An interface is arranged beside the light outlet 2 and is externally connected with a monitoring unit, and the monitoring unit comprises a spectrum radiometer 4 and a stability detector 5. The spectral radiometer 4 selects a QE Pro type high-sensitivity spectrometer of Ocean Insight company, is suitable for low-light condition, has a spectral range of 185-1100nm, covers the spectral range of a satellite-borne low-light level imager, and can quantitatively detect the spectral distribution of emergent radiation in real time. The stability monitor 5 adopts a C9329 type photoelectric sensor of Hamamatsu company, can convert an optical signal into a digital output signal with high resolution, and can monitor the stability of emergent radiation.
A heat dissipation unit is arranged outside the integrating sphere 1, the heat dissipation unit is a water cooling tank 6, and the water cooling tank 6 is a CEL-CR300 type industrial cooling water circulator. The refrigerating fluid of the water cooling tank flows through the water cooling lamp holder 8 to take away the huge heat of the LED light-emitting unit, thereby realizing dynamic constant temperature control and preventing the temperature of the lamp light source from rising to influence the emergent radiation.
Compared with the prior art, the utility model provides a pair of an integrating sphere lamp light source device for spaceborne shimmer imager radiometric calibration can directly be applied to spaceborne shimmer imager night radiometric calibration under the external field condition.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be considered as the protection scope of the present invention.
Claims (9)
1. The utility model provides an integrating sphere lamp light source device for spaceborne shimmer imager radiometric calibration, includes support frame (3), installs integrating sphere (1) on support frame (3), its characterized in that, light-emitting window (2) have been seted up on integrating sphere (1) spheroid, light source unit (7) have evenly been arranged through multiunit water-cooling lamp stand (8) to the inside preceding hemisphere of integrating sphere (1), water-cooling lamp stand (8) are connected with the heat dissipation unit of configuration outside integrating sphere (1), light-emitting window (2) side division is equipped with interface, external monitoring unit.
2. The integrating sphere lamp light source device according to claim 1, wherein the light outlet (2) is a square opening.
3. The integrating sphere lamp light source device according to claim 1, wherein the light source unit (7) is an LED light emitting unit.
4. The integrating-sphere lamp light source device according to claim 1, wherein the light source unit (7) is installed at 65 ° from the center normal of the light outlet (2).
5. The light source device of the integrating sphere lamp according to claim 1, wherein the water-cooled lamp holder (8) is surrounded by a half-circle arc-shaped light barrier in the inner sphere portion of the integrating sphere (1).
6. The light source device of the integrating sphere lamp according to claim 1, wherein the heat dissipation unit is a water cooling tank (6) for dynamically maintaining a constant temperature inside the integrating sphere.
7. The integrating-sphere lamp light source device according to claim 1, wherein the monitoring unit comprises a spectral radiometer (4) for real-time quantitative detection of the spectral distribution of the exiting radiation.
8. The integrating-sphere lamp light source device according to claim 7, characterized in that the spectral range detected by the spectral radiometer (4) can cover the spectral range of a satellite-borne micro-imager.
9. The integrating-sphere lamp light source device according to claim 1, wherein the monitoring unit further comprises a stability monitor (5) for monitoring stability of the emergent radiation.
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| CN202022785067.4U CN213813993U (en) | 2020-11-26 | 2020-11-26 | Integrating sphere lamp light source device for radiation calibration of satellite-borne low-light-level imager |
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| CN202022785067.4U CN213813993U (en) | 2020-11-26 | 2020-11-26 | Integrating sphere lamp light source device for radiation calibration of satellite-borne low-light-level imager |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114459359A (en) * | 2021-11-10 | 2022-05-10 | 厦门聚视智创科技有限公司 | Imaging detection method based on arc water cooling |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114459359A (en) * | 2021-11-10 | 2022-05-10 | 厦门聚视智创科技有限公司 | Imaging detection method based on arc water cooling |
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