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Device and method for optical radiation calibration

A calibration device and optical radiation technology, applied in the field of testing, can solve problems such as narrow range, large uncertainty, and difficulty in improving the accuracy of ultraviolet and infrared bands, so as to improve accuracy, reduce uncertainty, and eliminate measurement uncertainty Effect

Active Publication Date: 2015-03-25
THE 41ST INST OF CHINA ELECTRONICS TECH GRP +1
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Problems solved by technology

[0006] The invention proposes an optical radiation calibration device, which is a high-precision wide-spectrum optical radiation calibration device based on a low-temperature radiometer, which solves the problem of narrow band range, large uncertainty, ultraviolet and Infrared band accuracy is difficult to improve and other issues

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  • Device and method for optical radiation calibration
  • Device and method for optical radiation calibration

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Embodiment Construction

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0022] Such as figure 1 As shown, the optical radiation calibration device of the present invention includes a main optical path unit, a laser radiation stabilization system 40 , a vacuum system and a cryogenic radiometer 2 . The main optical path unit includes a light source 70, an optical fiber wavelength division multiplexer 20 and a beam shaper 30, wherein the light source 70 includes an ultraviolet light source 71, a visible near-infrared light source 72 ...

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Abstract

The invention provides a device and method for optical radiation calibration. The device comprises a main optical path unit, a laser radiation stabilizing system, a vacuum system and a low-temperature radiometer. The main optical path unit comprises a light source, an optical fiber wavelength division multiplexer and a beam shaping device, and optical signals output by the light source pass through the optical fiber wavelength division multiplexer and the beam shaping device and then are input into the laser radiation stabilizing system. The laser radiation stabilizing system comprises a first translation guide rail, an ultraviolet power stabilizing system, a visible power stabilizing system and an intermediate infrared power stabilizing system. A spatial filter is arranged between the laser radiation stabilizing system and the vacuum system, and the vacuum system comprises a prober vacuum chamber and a preparation vacuum chamber. The device for the optical radiation calibration reflects responsivity of a prober in the vacuum environment and greatly improves precision of spectral radiance calibration results by the low-temperature radiometer in space application, and the low-temperature radiometer is directly used within a very wide waveband range from ultraviolet to infrared for carrying out high-precision calibration.

Description

technical field [0001] The invention relates to the technical field of testing, in particular to an optical radiation calibrating device, and also to an optical radiation calibrating method. Background technique [0002] Optical radiation calibration plays a key role in the fields of optical radiation measurement, space remote sensing, climate monitoring and communication. The cryogenic radiometer is currently the most accurate measurement standard for optical radiation calibration. It uses low temperature, vacuum and superconducting technologies, and uses the principle of electrical substitution to measure the absolute power of optical radiation. Its measurement accuracy is better than 10 -5 Magnitude. [0003] In recent years, institutions such as NIST in the United States and NPL in the United Kingdom have developed cryogenic radiometers as the primary standard for absolute optical radiation, and have carried out a large number of basic experimental research and technolo...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01J1/00
Inventor 陈坤峰史学舜杨乐臣刘玉龙李健军
Owner THE 41ST INST OF CHINA ELECTRONICS TECH GRP
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