By using large aperture infrared imaging lens and amplifying, A/D converting, NUC, the system produces digital image signal which in direct ratio with radiation of target.

• 该系统采用大口径红外成像镜头，图像信号经放大、A/D转换和图像非均匀性校正，输出与目标辐射量成正比关系的数字图像信号。