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US07847886B2 Parabolic lenticular collimating films and methods thereof 有权
抛物面透镜状准直膜及其方法

Parabolic lenticular collimating films and methods thereof
Abstract:
A parabolic lenticular collimating film system includes at least one film which is at least partially transmissive and one or more parabolic structures on a surface of the film.
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