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US 6,829,095 B2Granted
Substrate-guided optical beam expander
AssigneeLumus Ltd.
InventorYaakov Amitai
Life of this patent
Estimating the term…
Abstract
The invention provides an optical device, including a light-transmitting substrate, optical means for coupling light into the substrate by total internal reflection, and a plurality of partially reflecting surfaces carried by the substrate, characterized in that the partially reflecting surfaces are parallel to each other and are not parallel to any of the edges of the substrate.
Claims46
An optical device, comprising:
- a light transmitting substrate having at least two major surfaces and edges;
- optical means for coupling light into said substrate by total internal reflection, and
- a plurality of partially reflecting surfaces located in said substrate, characterized in that said partially reflecting surfaces are parallel to each other.
Dependencies are inferred from the claim text.