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US 7,884,985 B2Granted
High brightness optical device
AssigneeLumus Ltd.
InventorsYaakov Amitai, Jonathan Gelberg
Life of this patent
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Abstract
There is provided an optical device, comprising a display source; a light-diffuser; an imaging optical module, and an output aperture from the optical device characterized in that the light diffuser is an angular, non-uniform diffuser of light for increasing a portion of light emerging from the display source that passes through the output aperture. A method for improving the brightness of an optical display is also provided.
Claims14
An optical device, comprising:
- a display source emitting light waves;
- a diverging light source illuminating the display source;
- a converging lens located between the light source and the display source;
- a light diffuser for non-uniformly diffusing the light of the display source;
- an output aperture for emitting light from the optical device;
- and
- an imaging lens located between the display source and the output aperture for setting the light waves at the output aperture to a specific brightness, the imaging lens being a telecentric lens.
4 more elements
Dependencies are inferred from the claim text.