8～12μm波段折/反/衍混合坦克扫描物镜消热差设计  

Athermalization design of 8-12μm infrared hybrid refractive/reflective/diffractive lenses for tank scan

作　　者：刘峰[1] 赛建刚[1] 赵建科[1] 徐亮[1] 胡丹丹[1] 

机构地区：[1]中国科学院西安光学精密机械研究所,陕西西安710119

出　　处：《红外与激光工程》2012年第9期2459-2462,共4页Infrared and Laser Engineering

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.

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 

分 类 号：TN216[电子电信—物理电子学]