Light source system for radiometer calibration

Abstract

The invention discloses a light source system for radiometer calibration. The light source system that is used for calibration of a bolometer, a radiant heat flow meter, a total radiometer, a full-spectrum radiometer, a radiation sensor and the like under the conditions of high color temperature and high irradiance comprises a radiation light source, a radiation light source connecting piece, an inner reflection shell, an outer structural shell, a rear flange, a front flange, a radiation regulator, an inner light guide arm, an outer light guide arm, a switch baffle and a cooling pipeline. Theradiation light source emits light radiation, the light radiation emitted by the radiation light source is collected through the inner reflection wall and the collected light radiation is converged and radiated forwards; the light radiation is led out through the inner light guide arm, the space of a radiation light field is homogenized, and the irradiance and the irradiation spectrum are adjustedthrough the irradiation adjuster; and a gap is formed between the inner reflection shell and the outer reflection shell and a refrigerant is used for cooling. According to the invention, a uniform irradiation field of over 50 kW / m<2> under the high color temperature can be provided; the light source system has advantages of being high in radiation illuminance, high in irradiation field uniformity, high in energy efficiency, free of background radiation interference and the like; and the calibration limit of the radiometer can be extended and the accuracy can be improved.

Description

technical field [0001] The invention relates to the technical field of optical radiation measurement, in particular to a light source system for radiometer calibration, which is used for calibration of radiometers such as bolometers, radiation heat flow meters, pyranometers, full-spectrum radiometers, and radiation sensors. Background technique [0002] A radiometer is a measuring instrument used to measure radiation, including bolometers, radiation heat flow meters, pyranometers, full-spectrum radiometers, and radiation sensors. It is widely used in labor hygiene, high temperature operation, heating and ventilation, solar power generation, mining metallurgy, aerospace, meteorological observation, earth radiation balance monitoring and other fields. In order to ensure the accuracy and reliability of the radiometer, it is necessary to perform measurement calibration on the radiometer. [0003] The spectrum, irradiance, spatial uniformity of irradiation field and background r...

AI Technical Summary

Problems solved by technology

However, at present, the traditional light source for radiometer calibration is generally calibrated with light intensity standard lamp, which has low spectral irradiance and average light field uniformity. It is difficult to meet the requirements of high irradiance and high spatial uniformity at the same time, which limits the calibration range of radiometers. The upper limit and the uncertainty of calibration results hinder the accuracy of radiometer values ​​when used in high color temperature and high irradiance scenes

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