Variable pitch structured optical film

Details Variable pitch structured optical film Variable pitch structured optical film

1996-04-12

1999-07-06

Watkins, III, William P.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including variation in thickness

428141, 428156, 428913, 428179, 428167, 428163, 359530, 359831, 359834, 359833, 359837, 362337, 362339, 362 26, 385146, 385901, 385 36, G02B 504, B32B 330

Patent

active

059195517

ABSTRACT:
The present invention includes a structured optical film with variable pitch peaks and/or grooves to reduce the visibility of moire interference patterns and optical displays incorporating one or more layers of the film. The pitch variations can be over groups of adjacent peaks and/or valleys or between adjacent pairs of peaks and/or valleys.

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Olof Bryngdahl, "Moire: Formation and Interpretation", Optica Acta, 24 (1), 70-77 (1977).

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