The wavelength converting material is mounted on the exit surface and directly or indirectly emits converted light into a medium that has a relatively low refractive index.

波长转换材料安装于出射表面上并且直接地或间接地将所转换的光发射到具有相对较低折射率的介质内。

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To improve the imaging quality of lens used in the helmet-mounted LLL night-vision system and make lens small in size, light in weight, the lens with the high order aspheric surface is designed.

为提高头盔式微光夜视系统的成像质量，并满足整个夜视系统体积小、重量轻的指标要求，提出了非球面物镜系统的设计。

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