Multi-layered collimator

Details Multi-layered collimator Multi-layered collimator

2003-09-26

2008-03-25

Schwartz, Jordan (Department: 2873)

Optical: systems and elements

Collimating of light beam

C359S738000

Reexamination Certificate

active

07349160

ABSTRACT:
A collimator for use in an optical device, such as a display device, includes a multi-layered sheet of at least five alternating light transmitting and light impervious layers. A collimation angle of a few degrees is obtainable using the collimator. The collimator may be produced by co-extruding or injection molding.

REFERENCES:
patent: 2053173 (1936-09-01), Astima
patent: 5204160 (1993-04-01), Rouser
patent: 5462700 (1995-10-01), Beeson et al.
patent: 5598281 (1997-01-01), Zimmerman et al.
patent: 6122465 (2000-09-01), Arimoto et al.
patent: WO 96 40480 (1996-12-01), None

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