光学与光电技术, 2017, 15 (3): 35, 网络出版: 2017-07-10
基于微分光线追迹的内外辐射传递算法研究
Radiometric Transmission Method Between Internal and External Based on Differential Ray Tracing
微分光线追迹 内外辐射传递 光谱切换 程序设计 differential ray tracing between internal and external radiometric transmis spectrum toggling programming design
摘要
为了定量研究光线光路中辐射能量的传输变化数理表达形式,实现用相对简单有效的光学内辐射传输替代复杂困难的系统全光路外辐射传输的技术过程,建立了光学系统内外辐射传递关系模型。模型结合辐射源的辐射模型和辐射能量在系统内部传输模型,利用微分光线追迹计算的方法,对携带辐射能量的光线传播路径进行分析研究。微分光线光学计算的方法对每一光学元件发射的辐射通量传输过程进行定量分析研究。光学系统的每个被分析的光学元件都被看作朗伯辐射源。而位于它后面的所有光学元件组成新的光学系统。待分析的光学元件发射的辐射通量经过后面的光学系统最终到达探测器面。据此理论分析,设计了光学系统内外辐射传输的理论模型和模型实现的算法程序。根据实验测量数据,应用于构建的模型,计算的最大相对误差为8.2%,平均相对误差为5.1%,对于红外光学系统的实际测量实验,可以满足测量的要求。
Abstract
In order to study the quantitative symbolic expression of radiometric energy transmission in optical path, the energy transmission model between internal and external is established. This method is proved to be effective by trial. It is combined with the model of radiation resource and the model of internal transmission for radiometric energy. The differential ray tracing method is used to analyze the flux in optical path. In the optical system, each optical element is considered as Lambert radiation. The radiant flux of optical elements is analyzed. According to the theoretical analysis, the transmission model between internal and external is designed. The algorithm program for this model is implemented. The experiment results show that the maximum relatively error is 8.2% and the mean relatively error is 5.1%.
郭聚光, 马勇辉, 杨智慧, 万继敏. 基于微分光线追迹的内外辐射传递算法研究[J]. 光学与光电技术, 2017, 15(3): 35. GUO Ju-guang, MA Yong-hui, YANG Zhi-hui, WAN Ji-min. Radiometric Transmission Method Between Internal and External Based on Differential Ray Tracing[J]. OPTICS & OPTOELECTRONIC TECHNOLOGY, 2017, 15(3): 35.