Liquid crystal achromatic compound retarder
作者： Kristina M. Johnson , Gary D. Sharp
DOI:
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摘要: This invention provides achromatic liquid crystal compound retarders, polarization switches, and shutters using the retarders. It further variable retardance smectic The retarder of this comprises a central unit two external passive retarders positioned in series with on either side unit. (1) rotatable half-wave retarder, or (2) first second having switchable between zero half-wave. are equal orientation to each other. Design equations determine elements their relative obtain particular for structure.
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