Is a
Patent attributes
Patent Applicant
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
July 13, 2021
Patent Application Number
16500191
Date Filed
March 29, 2018
Patent Citations
Patent Primary Examiner
Patent abstract
A switchable directional illumination apparatus comprises first and second arrays of LEDs, some of which are micro-LEDs; an aligned catadioptric micro-optic array and an aligned light guide array. In a first mode a narrow angular output is provided by a first micro-LED array and catadioptric micro-optics. In a second mode a wider angular output is provided by the second LED array and light guides. A thin and efficient illumination apparatus may be used for switching illumination in environmental lighting, display backlighting or direct display.
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