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US 2015/0029744 A1Published application
Rotated micro-optical structures for banding suppression from point light sources
AssigneeUnipixel Displays, Inc.
InventorsDaniel K. Van Ostrand, Ying Zhou, Martin A. Kykta
Life of this patent
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Abstract
An apparatus for use on an edge-injected, total internal reflection (TIR) waveguide. The apparatus comprises a substrate and a plurality of microstructures provided on the substrate. Each microstructure comprises at least two approximately planar surfaces for extracting light from the TIR waveguide. The plurality of microstructures are pseudo-randomly oriented on the substrate. The apparatus may used in a lighting system (e.g., a backlight for a display).
Claims27
An apparatus for use on an edge-injected total internal reflection (TIR) waveguide, comprising:
- a substrate;
- and
- a plurality of microstructures provided on the substrate, each microstructure comprising at least two approximately planar surfaces which are positioned to extract light from the TIR waveguide;
- wherein the plurality of microstructures are pseudo-randomly oriented on the substrate.
1 more element
A system, comprising:
- a waveguide configured to receive edge-injected light;
- and
- a plurality of microstructures disposed on the waveguide in a pseudo-random orientation, each microstructure comprising at least two approximately planar surfaces which are positioned to extract light from the waveguide.
Dependencies are inferred from the claim text.