Back to results
US 7,724,441 B2Granted
Light guide optical device
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.
Claims17
An optical device, comprising:
- a display source emitting light waves;
- a selective diffuser for non-uniformly diffusing the light waves of the display source;
- an imaging optical lens for imagine the light waves from said display source;
- a light-transmitting substrate having a light-admitting surface and at least one surface located inside said substrate for coupling the light waves out of said substrate;
- an optical coupler for coupling the light waves from said imaging optical lens into said substrate
- characterized in that
- the light waves from the entire display source are coupled by the optical coupler via said light-admitting surface into the substrate by total internal reflection.
4 more elements
Dependencies are inferred from the claim text.