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目的研究一步彩虹全息术中，提高激光束能量利用率及增大制版面积的新方法。方法在双高斯１：１制版镜头的对称面上形成物面的夫朗和费衍射，并使物面与茶形散斑屏重合，使得各物点均以狭缝状的光束通过透镜组在记录介质面成像。结果提高了能量。利用率，将原来的曝光时间２１０ｓ缩短至４０ｓ，同时利用该技术可制作７０ｍｍｘ７０ｍｍ高分辨力的全息图。结论引入本方法，可大大提高激光能量利用率，为一步彩虹全息在２Ｄ／３Ｄ制版实用化提供了有利条件。
Objective To study a new method of rainbow holography in order to improve the energy efficiency of laser beam and increase the plate area. Methods Fraunhofer diffraction of the object plane was formed on the symmetry plane of the double Gaussian 1: 1 plate-making lens, and the object plane was coincided with the tea-shaped speckle screen so that each object point passed through the lens group with a slit- Recording medium surface imaging. The result is increased energy. Utilization, the original exposure time of 210s shortened to 40s, while using the technology can produce high resolution 70mmx70mm hologram. Conclusion The introduction of this method can greatly improve the utilization rate of laser energy and provide favorable conditions for the practical application of one-step rainbow holography in 2D / 3D plate making.