Industry Patents

Patent: 6871982

High-Density Illumination System

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Patent Number:	6871982
Title:	High-Density Illumination System
Abstract:	A compact and efficient optical illumination system featuring planar multi-layered LED light source arrays concentrating their polarized or un-polarized output within a limited angular range. The optical system manipulates light emitted by a planar array of electrically-interconnected LED chips positioned within the input apertures of a corresponding array of shaped metallic reflecting bins using at least one of elevated prismatic films, polarization converting films, micro-lens arrays and external hemispherical or ellipsoidal reflecting elements. Practical applications of the LED array illumination systems include compact LCD or DMD video image projectors, as well as general lighting, automotive lighting, and LCD backlighting.
Country of Issue:	US
First Named Inventor:	Holman
Assignee:	Digital Optics International Corporation
Continuation or Divisional of:
International Classification:	F21V 5/00
US Classification:	362/331
Issue Date:	03-29-2005
Filing Date:	01-22-2004
Application :	10/763816
Notes:
Link to Patent at freepatentsonline.com:	6871982 at Freepatentsonline
Link to World Patent Family¹:	World Patent Family at European Patent Office
Link to Google Patents¹:	6871982 at Google Patents

1. The Google Patents and World Patent Family links will likely not work until a few weeks
after the patent has issued - they take a while to get new patents in their systems.

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