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US Patent 7876489 Display apparatus with optical cavities

Patent 7876489 was granted and assigned to Pixtronix on January, 2011 by the United States Patent and Trademark Office.

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Is a
Patent
Patent
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Patent attributes

Current Assignee
Pixtronix
Pixtronix
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Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
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Patent Number
78764890
Patent Inventor Names
Jignesh Gandhi0
Nesbitt W. Hagood0
Roger W. Barton0
Date of Patent
January 25, 2011
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Patent Application Number
115281910
Date Filed
September 26, 2006
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Patent Citations Received
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US Patent RE49939 Illumination device and display unit
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US Patent 11662513 Non-uniform sub-pupil reflectors and methods in optical waveguides for AR, HMD and HUD applications
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US Patent 11668930 Optical hyperfocal reflective systems and methods, and augmented reality and/or virtual reality displays incorporating same
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US Patent 11863730 Optical waveguide combiner systems and methods
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US Patent 11923475 Method of making light converting systems using thin light trapping structures and photoabsorptive films
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Patent Primary Examiner
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Timothy J Thompson
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Patent abstract

A display includes an array of light modulators that define a display plane, a light guide and front- and rear-facing reflective surfaces. The light guide includes a plurality of geometric light redirectors, and at least 50% of the light guide's rear surface is parallel to the display plane. The rear-facing reflective surface is parallel to the display plane and includes a plurality of apertures.

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