摘要
根据坦克扫描光学系统的要求,设计了一种工作于8～12μm波段,可识别2 000 m远坦克目标的折/反/衍射混合红外消热差光学系统。该系统采用新型的卡塞格林系统,其非球面主镜和次镜全部取代为球面,解决了卡塞格林系统大口径非球面主镜、次镜的高加工精度和装调难的问题;通过应用衍射元件独特的温度特性实现红外光学系统的无热化设计,设计的系统结构简单紧凑,口径大、焦距长、分辨率高,并且在-40～60℃的温度范围内成像质量接近衍射极限,满足坦克扫描系统的总体要求和像质要求。
A range of 8-12 μm infrared hybrid refractive/reflective/diffractive athermalization lenses was designed for the needs of tank location system.The trouble of high machining accuracy with great difficulty in setting for bigbore primary mirror and secondary mirror was solved by employing a new-style Cassegrain system in which aspheric surfaces of primary mirror and secondary mirror were replaced by spheric surfaces.Athermalization design of infrared system was implemented by applying of diffractive elements with special temperature characteristics.This system has the feature of compact in frame,large caliber,long focus,high resolution and excellent image quality in range of-40-60 ℃,and meets the needs of general requirement and image quality demand for tank location.
出处
《红外与激光工程》
EI
CSCD
北大核心
2012年第9期2459-2462,共4页
Infrared and Laser Engineering
关键词
光学设计
红外光学系统
消热差设计
折/反/衍混合系统
optical design
infrared optical system
athermalization design
refractive/reflective/diffractive hybrid system
