Blacklight with structured surfaces

Details Blacklight with structured surfaces Blacklight with structured surfaces

2006-05-16

2006-05-16

Smith, Zandra V. (Department: 2877)

Optical waveguides

Noncyclindrical or nonplanar shaped waveguide

C385S031000

Reexamination Certificate

active

07046905

ABSTRACT:
A backlight includes a lightguide, a light source disposed with respect to the lightguide to introduce light into the lightguide and a turning film. Optical structures are formed in one of an output surface and a back surface of the lightguide. The optical structures are arranged to extract light from the lightguide. A back reflector is disposed adjacent the back surface. The optical structures are formed to include a varying pattern arranged to mask non-uniformities in the output of the lightguide.

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