Light directing film having variable height structured surface a

Details Light directing film having variable height structured surface a Light directing film having variable height structured surface a

1997-04-03

1998-06-23

Bovernick, Rodney B.

Optical waveguides

Noncyclindrical or nonplanar shaped waveguide

385 36, 385901, 359834, 359837, 349 62, 349 65, G02B 610

Patent

active

057713286

ABSTRACT:
A light directing film including a first surface and a second structured surface. The structured surface includes a repeating pattern of prism zones including at least a first zone having a plurality of prism elements with peaks disposed at a first distance from a reference plane and a second zone having a plurality of prism elements with peaks disposed less than the first distance from a reference plane. The width of the first zone preferably measures less than about 300 microns.

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