The effect of LLL night vision system on the target features is analyzed. Finally, LLL night vision performance is studied.

分析微光夜视系统对目标特性的改变，探讨提高微光夜视性能的对策。

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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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