摘要
光学窗口是空间相机光学系统中直接暴露在轨道热真空环境中的光学元件，所处的热环境非常复杂，要产生温度梯度，从而对空间相机的成像质量和分辨率产生影响。文中结合工程实际，以光学波像差的基本理论为基础对空间相机光学窗口的非轴对称温度场进行了热光学评价，编程计算了空间相机光学窗口在一个轨道周期内各典型位置处的均方根波像差，并把计算结果与美国“天空实验室”光学窗口的相应数据进行比较，以验证本文热光学分析的合理性。
In the optical system of space camera, the optical window is the only optical component exposed to the very complicated thermal vacuum circumstance in orbit space. The temperature gradient occurs imperatively and then influences to the image quality and resolution of the space camera. Based on the theory of optical wavefront error and combining the engineering practice, the thermal optical evaluation has been done to the optical window with non symmetric temperature field. The RMS wavefront errors of the optical window have been calculated on each typical position in orbit cycle. The results of the thermal optical evaluation in this paper are verified by the optical windows of American “Skylab” spaceship as a reference and a proof.
出处
《光学学报》
EI
CAS
CSCD
北大核心
1998年第10期1440-1444,共5页
Acta Optica Sinica
基金
国家自然科学基金
关键词
光学窗口
空间相机
热光学分析
波像差
optical window, space camera, thermal optical evaluation, wavefront error.
