摘要
介绍了一种长波无热化光学系统,利用反射元件与折射元件光热效应相抵消的原理,实现了无热化设计。反射系统采用卡式结构形成一次像点,折射系统将一次像点最终成像在焦平面上。该系统在不采用衍射元件下实现了良好的无热化效果。
A LWIR athermalization system is introduced. The athermalization design is realized by using the opto-thermal expansion coefficient difference of reflective and refractive elements. The first image plane is focused by Cassegrain system, and final image plane is focused by the refractive system. This optical system realizes athermalization without diffractive element.
出处
《红外技术》
CSCD
北大核心
2012年第11期644-647,共4页
Infrared Technology
关键词
折反系统
二次成像
无热化光学系统
catadioptric system, reimaged system, athermalization optical system
