摘要
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。
Aim To enhance the utilization ratio of laser energy while introducing a new practical technique and a system in one-step rainbow holography. Methods On the symmetrical plane of the double-Gauss lens with 1:1 magnification,the Fraunhofer diffraction of the object surface could be formed. With the conbination of the object plane with the striped -speckle screen, every point of object surface formed its image on the recording medium through the lens with a slit-like beam Results The time of producing a 70mmx70mm master plate with high resolution could be reduced to 40s while 210s were needed with the old methods.Conclusion With this technique,we can make a better use of laser energy and make it easy to produce master holograms of 2D /3D by incorporating one -step rainbow holography.
出处
《北京理工大学学报》
EI
CAS
CSCD
1998年第4期502-505,共4页
Transactions of Beijing Institute of Technology
基金
北京市自然科学基金
关键词
条形散斑屏
2D/3D
一步彩虹全息
1:1双高斯制版镜头
striped-speckle screen
2D/3D
one-step rainbow holography: double- Gauss lens with 1 : 1 magnification
