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对空间相机进行热光学分析，必须掌握相机的非稳态温度场和热致位移场。要计算温度场，必须对其光机结构的热特性有一定的了解。对空间相机的各个主要光学组件（ 前、后组校正镜组、球面与平面反射镜、窗口玻璃组件） 建立简化传热模型，进行等效热阻计算，给出了它们的温差表达式，分析了各镜组件的导热特性，为热光学分析的温度场计算工作提供条件。
Thermal-optical analysis of space cameras must capture the camera’s unsteady temperature and thermal-induced displacement fields. To calculate the temperature field, you must have a certain understanding of the thermal characteristics of its light machine structure. A simplified heat transfer model was established for all the major optical components of the space camera (front and rear group of correction mirrors, spherical and plane mirrors, window glass components) and their equivalent thermal resistances were calculated. Their temperature difference expressions were given and analyzed The thermal properties of each mirror assembly provide the conditions for the calculation of the temperature field of the thermal optical analysis.