红外光学材料 meaning in English

infrared optical material

An equipment for measuring the temperature coefficient of refractive index of infrared materials
红外光学材料折射率温度系数测量装置
Secondly , basic design project of wide - fov optical system with optical gain is proposed after the optical gain of typical wide - fov optical unit with optical gain has been analyzed and the infrared optical material has been selected . then the structure of optical system is optimized and analyzed with optical design software
然后通过对典型宽视场有增益光学单元的光学增益分析,选取合适的红外光学材料,给出了宽视场有增益光学系统初始设计方案,并用光学设计软件进行结构优化和分析评价。