摘要
设计了一个无热化双视场长波红外光学系统,工作波段7.7～9.7μm。通过轴向移动一组透镜实现红外系统双视场设计,为了满足光学系统大温度范围工作的需求,采用光学被动无热化的设计方法,通过合理分配光学元件材料,利用不同材料的热差特性来消除整个光学系统的热离焦,实现了红外光学系统的无热化设计。像质评价结果表明,光学系统在全温度范围内(-60℃～+70℃)双视场成像质量好,接近衍射极限。
A design study of athermalization of switchable dual-field-of-view optical systems for 7. 7 ~ 9. 7 ~m is presented. With the axial motion of a lens group, a result of dual-field-of-view infrared optical system is achieved. In order to meet a wide environmental temperature range, the optical passive athermalization is used to eliminate the thermal effect in optical systems by correctly assembling different optical materials. The final optical designs along with their modulation transfer function （MTF） and root-mean-square （RMS） radius are presented, showing excellent imaging performance in dual fields-of-view at the temperature range between --60 ℃ and 4-70 ℃.
出处
《激光与光电子学进展》
CSCD
北大核心
2012年第12期155-158,共4页
Laser & Optoelectronics Progress
关键词
光学设计
红外光学系统
光学被动无热化
双视场
optical design
infrared optical system
passive optical athermalization
dual field-of-view
