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US 7,457,040 B2Granted
Light guide optical device
AssigneeLumus Ltd.
InventorYaakov Amitai
Life of this patent
Estimating the term…
Abstract
There is provided an optical device including a light-transmitting substrate having at least two major surfaces and edges, optical means for coupling light into the substrate by total internal reflection and at least one partially reflecting surface located in the substrate.
Claims69
An optical device, comprising:
- a light-transmitting substrate having at least two major surfaces parallel to each other and edges;
- at least one partially reflecting surface located in said substrate which is non-parallel to said major surfaces of the substrate
- characterized by at least two display light sources, and
- optical means for coupling light from said light sources into said substrate by internal reflection.
1 more element
An optical device, comprising:
- a light-transmitting substrate having at least two major surfaces parallel to each other and edges;
- optical means for coupling rays of light into said substrate by total internal reflection, and
- at least one partially reflecting surface located in said substrate which surface is non-parallel to said major surfaces of the substrate,
- characterized in that said optical means for coupling light into the substrate is disposed at an angle to said major surfaces, causing rays of the coupled light having the same off-axis angle inside said substrate to intersect said partially reflecting surface with two different incident angles.
1 more element
An optical device, comprising:
- a light-transmitting substrate having at least two major surfaces parallel to each other and edges;
- at least one partially reflecting surface located in said substrate, which surface is non-parallel to said major surfaces of the substrate;
- and
- optical means for coupling into said substrate by total internal reflection rays of light having the same off-axis angle inside said substrate, which rays of light intersect said partially reflecting surface with two different incident angles.
1 more element
Dependencies are inferred from the claim text.