采用合成狭缝的方法，不用透镜成像，直接对三维漫射物体一次拍出彩虹全息图。这个全息图重现像的观察范围很宽，视场不受透镜孔径的限制。对该方法作了理论分析，并给出实验结果 Synthetic slit method, without lens imaging, directly to the three-dimensional diffusion of the rainbow color hologram shot. The observation of this hologram reappearance is wide and the field of view is not limited by the lens aperture. The method is theoretically analyzed and the experimental results are given