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介绍了一种以氮分子激光器作光源的ＣＣＤ相机阴影照相系统，该系统能可靠地对高速运动目标和瞬变现象进行阴影照相电子成像，并提出了基于该系统的阴影照相电子成像测速法．该系统具有一些独到的优点：作为系统光源的氮分子激光器的脉宽为纳秒量级（火花光源的脉宽为微秒或亚微秒量级），适用于高速摄影；对环境无特殊要求，能在一般室内环境下正常工作；电子成像技术的采用，使得该系统无需显、定影及判读等操作，直接由计算机进行图像处理和输出．
A CCD camera shadow camera system using nitrogen molecular laser as light source is introduced. The system can reliably carry out shadow photoelectron imaging of high speed moving target and transient phenomenon, and propose a shadow camera electronic imaging speed measuring method based on the system. The system has some unique advantages: the pulse width of the nitrogen molecular laser as a system light source is on the order of nanoseconds (the pulse width of a spark light source is on the order of microseconds or sub-microseconds), and is suitable for high-speed photography; there is no special requirement on the environment , Can work normally in the general indoor environment; The adoption of electronic imaging technology makes the system without image display, fixing and interpretation and other operations directly by the computer image processing and output.