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Integration spectrum in light small-sized machine as well as radialization scaling device

A technology of radiation calibration and spectral radiance, which is applied in the field of integrated spectrum and radiation calibration devices on light and small computers, can solve problems such as deficiencies

Inactive Publication Date: 2008-08-27
SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In summary, existing devices are relatively inadequate for the spectral and radiometric calibration required for modern spectral detection applications

Method used

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  • Integration spectrum in light small-sized machine as well as radialization scaling device
  • Integration spectrum in light small-sized machine as well as radialization scaling device
  • Integration spectrum in light small-sized machine as well as radialization scaling device

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Embodiment Construction

[0026] The following is based on Figure 1 to Figure 4 A preferred embodiment of the present invention is given to illustrate the structural features and implementation methods of the present invention, but not to limit the scope of the present invention.

[0027] This embodiment is an on-board calibration device provided for visible to short-wave infrared imaging spectrometers. The design life is 2 years, and its spectral splitting rate is 5nm at 0.4-1.0 microns, and 10nm at 1.0-2.5 microns. The on-board spectral calibration accuracy is required Better than 1nm, radiation calibration accuracy better than 10%.

[0028] The spectrum and radiation calibration device on the light and small machine includes the following parts:

[0029] 1) Light source 1: In this embodiment, sunlight is selected as the light source. Therefore, depending on the angle of the normal line of the incident surface of the optical fiber relative to the sun, light sources with different radiant brightness...

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Abstract

The invention discloses an integral spectrum and radiation calibration device in a light and small machine, which comprises a light source; a surface light source assembly consisting of a fiber bundle, a light guiding plate, a diffuse reflection plate doped with rare earth element, and a transmission type diffused plate; a rotary motor, and a spectral radiance brightness meter. Relative to a spectrographic apparatus to be calibrated, the spectral radiance brightness meter is characterized in high accuracy and high stability. And the spectral radiance brightness meter and the spectrographic apparatus are assembled on the same platform and share the same light path direction. The rotary motor drives the surface light source assembly to turn upward to avoid the light path of the spectrographic apparatus, and at that time the spectrographic apparatus can observe an object. When the calibration is needed, the rotary motor drives the surface light source assembly to turn downward to be positioned right ahead of the spectrographic apparatus to be calibrated, and at that time the spectrum and radiation calibration of the apparatus can start. At that time, the spectral radiance brightness meter works to monitor the changes of the radiance brightness in real time. The radiation calibration device provided by the invention is characterized in not only lightness but also smallness, thereby being particularly suitable for the machine spectrum and radiation calibration of the spaceborne spectrographic apparatus applied to the deep space detection.

Description

technical field [0001] The invention belongs to the technical field of spectrum and radiation measurement, in particular to a light and small computer integrated spectrum and radiation calibration device, which is integrated on a spectrum instrument to provide real-time spectrum and radiation calibration for the instrument. Background technique [0002] At present, spectroscopic instruments, including spectrometers and imaging spectrometers, are increasingly used in all aspects of social life. Spectral instruments acquire images or spectral image information of sky, ground and ocean targets. In order to make the obtained information true and reliable, calibration is required. However, although the spectroscopic instruments used in airborne, especially spaceborne, and deep space exploration have been calibrated in the laboratory, once they are in the air, due to the large changes in the environmental conditions and the passage of time, Over time, due to different degrees of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J3/28G01J1/00
Inventor 王建宇何志平舒嵘薛永祺龚玉梅
Owner SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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