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US08998429B2 Printed material and photographic material 有权
印刷材料和照相材料

Printed material and photographic material
摘要:
A printed material includes a printed material body with a surface, and an optical element disposed on the surface of the printed material body. The optical element includes multiple structures formed at a pitch not longer than the wavelength of visible light. The structures have an aspect ratio of 0.6 or more and 5.0 or less.
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