一、前言近年来,大量的图象信息要求快速准确的进行记录处理,在这种处理设备中,激光做为图象记录的光源得到人们的重视。激光分辨率高、能量强,从而可选灵敏度低、分辨率高的微粒胶片;激光单色性好、畸变小,可提高信噪比,根据胶片的光谱灵敏度,选择不同波长 I. Introduction In recent years, a large amount of image information has required fast and accurate recording processing. In this processing device, laser light is regarded as a light source for image recording and has drawn people’s attention. Laser high resolution, high energy, which can choose low sensitivity, high resolution of the particle film; laser monochromaticity, small distortion, can improve the signal to noise ratio, according to the film’s spectral sensitivity, choose a different wavelength