Prism sheet

Details Prism sheet Prism sheet

2011-04-19

2011-04-19

Collins, Darryl J (Department: 2873)

Optical: systems and elements

Single channel simultaneously to or from plural channels

By surface composed of lenticular elements

C359S619000, C359S831000, C362S333000, C362S339000

Reexamination Certificate

active

07929213

ABSTRACT:
An exemplary prism sheet includes a transparent main body. The transparent main body includes a first surface and a second surface. The first surface and the second surface are on opposite sides of the transparent main body. The first surface defines a plurality of a plurality of elongated arc-shaped grooves. The second surface defines a plurality of parallelogram microstructures. Each parallelogram microstructure defines four adjacent triangular pyramid depressions.

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patent: 2009/0073676 (2009-03-01), Hsu et al.
patent: 2009/0244738 (2009-10-01), Chang

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