Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
October 19, 2010
Patent Application Number
11746516
Date Filed
May 9, 2007
Patent Citations Received
Patent Primary Examiner
Patent abstract
A beam direction control element has transparent areas and light absorption areas alternately arranged on a surface of a substrate, wherein the light absorption areas function as a louver for controlling the direction of a beam of light. The beam direction control element is manufactured by disposing an optically transparent material on a first transparent substrate to form transparent ridges which constitute the transparent areas, filling curable and photo-absorptive fluid in gaps between the transparent ridges, and then curing the fluid to form the light absorption areas.
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