This paper introduces a principle of how to measure individual circular pitch error and total cumulative pitch error, at the same time comparative method is put forward.
文章介绍了单个齿距偏差和齿距累积总偏差的测量原理，同时也介绍了相对法的测量方法。
With the same recipe, shorter cure time, comparative smaller degree of two laser beams and thinner PDLC film give rise to higher diffraction efficiency.
较小的膜层厚度、较小的光束夹角和较短的曝光聚合固化时间有利于衍射效率的提高。
With the same recipe, shorter cure time, comparative smaller degree of two laser beams and thinner PDLC film give rise to higher diffraction efficiency.
较小的膜层厚度、较小的光束夹角和较短的曝光聚合固化时间有利于衍射效率的提高。
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