大相对孔径非制冷红外光学系统无热化设计

The optical design of the uncooled infrared thermal detection device

针对当前军工红外成像仪器小型化及宽温度适应性的需要，采用光学被动式无热化方法对8～12Mm波段设计了一款镜头。该镜头F数为1、焦距为40mm、视场为16．8°、温度适应范围为40～65℃。设计结果显示，在要求的温度范围内，系统无需调焦，像质接近衍射极限，达到无热化的性能要求。

To meet the needs of the current military infrared imaging instrument,we designed a lens for 8~12μm wave band with uncooled optical passive method.The specific parameter,F is 1,focus is 40 mm,field of view is 16.8°.The design results are achieved within the scope of the-40~65 ℃,as close to the diffraction limitation.The system does not need focus.The athermalization performance is good.