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为了既节省稀有昂贵的冰洲石晶体材料,又尽量提高偏光棱镜的透射比,本文采用冰洲石晶体与光学玻璃组合的方法,给出一种以布儒斯特角入射来提高o光透射比的偏光棱镜的设计。样品由ZBaF3玻璃与冰洲石晶体通过大折射率液态胶合剂溴代萘胶合而成;通过实验测试,该形式棱镜的透射比均在95%以上,消光比优于10。由该棱镜的理论设计和性能测试两方面都证明:冰洲石晶体与光学玻璃组合形式的偏光棱镜在一般情况下完全可以取代纯冰洲石晶体材料的偏光棱镜。
In order to save the rare and expensive crystal material of the iceland stone and to maximize the transmittance of the polarizing prism, a method of combining the crystal of the iceberg with the optical glass is used to improve the transmission of o light by Brewster angle incidence Polarizing prism than the design. The samples are composed of ZBaF3 glass and icelandic stone crystal bonded by brominated naphthalene, a large-index liquid glue. Through experimental tests, the transmittance of the prism is above 95% and the extinction ratio is better than 10. The theoretical design and performance testing of the prism prove that the polarizing prism in the form of iceland stone crystal and optical glass can completely replace the polarizing prism of pure iceland stone crystal material in general.