理论分析了液晶显示器件(LCD)夜视成像系统(NVIS)的评价方法，给出了对比橙绿蓝(OGB)彩色发光二极管(LED)灯中各单色发光芯片对夜视辐亮度贡献大小的方法。制作了具有白光LED 和OGB 彩色LED 灯双模式背光源系统的液晶显示器，实验测得使用白光LED 灯作为背光源时，显示器的夜视辐亮度为3.14×10-8 W/(cm2·sr·nm)，超出国军标(GJB)规定的上限2.2×10-9 W/(cm2 ·sr·nm)；而使用OGB 彩色LED 灯作为背光源时，模块的夜视辐亮度降低到1.958×10-9 W/(cm2·sr·nm)，满足GJB 要求；对比了双模式背光源系统中OGB 彩色LED 灯中各单色芯片对夜视辐亮度的贡献比例，其中蓝灯最大，橙灯次之，绿灯最小。

The method of evaluating the night vision imaging system (NVIS) compatibility of LCD is analysed in theory, and a method of comparing the contributiveness for NVIS radiance of every monochromatic chip in orange, green and blue (OGB) polychrome LED is pointed out. A LCD with two backlight sources system including white LEDs and OGB polychrome LEDs is prepared to for experiment. It is proved that, when white LEDs are used as backlight source, the NVIS radiance of LCD is 3.14× 10-8 W/(cm2 ·sr·nm), which is larger than the limit of 2.2× 10-9 W/(cm2 ·sr·nm) in national military standard (GJB), when OGB polychrome LEDs are used as backlight source, the NVIS radiance reduces to 1.958 × 10-9 W/(cm2 · sr · nm), which is accordant with the requirement in GJB. The contribution for NVIS radiance of every monochromatic chip in OGB polychrome LED is compared, the results show that blue chip contributes the most NVIS radiance, red chip less, and green chip the least.