无热化保形光学系统设计  

Athermal Design for Conformal Optical System

作　　者：武伟[1] 潘国庆[1,2] 孙金霞[1] 

机构地区：[1]中国空空导弹研究院,河南洛阳471009 [2]航空制导武器航空科技重点实验室,河南洛阳471009

出　　处：《航空兵器》2016年第1期55-59,共5页Aero Weaponry

基　　金：中航工业集团公司创新基金(2013C01415R)

摘　　要：为消除温度变化对像质的影响,根据消热差条件选取锗、硫化锌和硒化锌三种材料,利用衍射元件特殊的光热特性,设计了折/衍混合消热差的红外保形光学系统,通过优化整流罩内表面和固定校正板校正像差。软件分析结果表明,该系统在-40~60℃温度变化范围内,各个视场的光学传递函数在17 lp/mm处大于0.45,满足消热差和校正像差要求。In order to eliminate the influence of temperature change on image quality,the infrared conformal optical system with hybrid refractive / diffractive athermalization is designed,by selecting Ge,Zn S and Zn Se according to athermal condition and using special optothermal properties of diffractive elements. The aberration of optical system is corrected by optimizing the inner surface of dome and using fixed correcting plate. Software analysis show that during- 40 ~ 60 ℃,the optical transfer function of each field in 17 lp / mm is more than 0. 45,which meets the requirements of athermalization and corrected aberration.

关 键 词：保形光学 消热差设计 Wassermann-Wolf方程 折/衍混合结构 

分 类 号：TJ765.331[兵器科学与技术—武器系统与运用工程] O435.2[机械工程—光学工程]