基于琼斯法的高亮度积分球定标光源

Calibration Source of High Luminance with Integrating Sphere Based on Jones Method

针对目前光学口径不断增大的空间光学遥感器实验室辐射定标的需求,基于琼斯法设计了一种在400~900 nm波段积分辐亮度为6 800 W/(m2·sr)的高亮度积分球定标光源。对该光源的热设计表明:采用水冷散热的方式能够满足高亮度积分球定标光源的散热需求。实验表明,该定标光源在400~900 nm波段范围内积分辐亮度达到6 714 W/(m2·sr),经过散热后积分球球体温度场分布满足定标要求,可应用于工程实践。

In order to meet the requirements of laboratory radiometric calibration for continually rising optical aperture of optical remote sensors,a calibration source of high luminance with integrating sphere was designed based on Jones method. The integrated radiance in the range of 400 nm to 900 nm was 6 800 W /( m2·sr). The thermal design results indicated that the water-cooling method could meet the heat dissipation of the high luminance calibration source. The integrated radiance of the high luminance calibration source was 6 714 W /( m2·sr) in the range of 400 nm to 900 nm.The temperature distribution of the integrating sphere made the calibration demands satisfied through water-cooling,which suggested that the calibration source of high luminance using integrating sphere based on Jones method could be used to engineering practice.