摘要
对纯反射的经典卡塞系统,推导出了热差的数学解析式,用解析式分析计算了三种典型情形,并同步用ZEMAX软件进行了模拟演算。结果表明:当材料选择不当时,将会产生很大的热差;当反射镜材料和结构件材料的膨胀系数值相同时,热差恒为零。
For total reflecting classical Cassegrain system,the mathematic analytic formula of thermal difference is deduced,this analytic formula is applied to analyze and calculate three typical cases,and at the same time simulation is carried out with the software ZEMAX.The result shows： when material is chosen improperly,it will produce very large thermal difference;when the thermal expansion coefficients of reflector and structure are the same,the thermal difference does not exist.
出处
《激光与红外》
CAS
CSCD
北大核心
2011年第4期435-441,共7页
Laser & Infrared
关键词
热差
经典卡塞格林系统
红外导引头
thermal difference
classical Cassegrain system
infrared seeker
