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US 2009/0153752 A1Published application
Projector using independent multiple wavelength light sources
OwnerBarry D. Silversteininventor
Life of this patent
Estimating the term…
Abstract
A digital image projector for increasing brightness includes a first light source; a second light source that is spectrally adjacent to the first light source; a dichroic beamsplitter disposed to direct light of both the first and second light source; a spatial light modulator that receives light from both the first and second light sources; and projection optics for delivering imaging light from the spatial light modulator.
Claims25
A digital image projector for increasing brightness comprising:
- (a) a first light source;
- (b) a second light source that is spectrally adjacent to the first light source;
- (c) a dichroic beamsplitter disposed to direct light of both the first and second light source;
- (d) a spatial light modulator that receives light from both the first and second light sources;
- and
- (e) projection optics for delivering imaging light from the spatial light modulator.
3 more elements
A stereoscopic digital image projector system comprising:
- (a) two separately controlled, spectrally adjacent light sources;
- (b) a dichroic beamsplitter that combines light from the light sources into a single spatial area;
- (c) a controller system to alternately provide illumination from each spectrally adjacent light source in conjunction with the corresponding image from the spatial light modulator;
- (d) a spatial light modulator that receives the alternating illumination light;
- (e) projection optics for delivering imaging light from the spatial light modulator to a projection area;
- and
- (f) filter glasses for a viewer to selectively transmit one adjacent spectral band state to each eye, while rejecting the second adjacent spectral band.
4 more elements
A stereoscopic digital image projector system comprising:
- (a) two spectrally adjacent light sources;
- (b) an optical shutter that alternately delivers the two spectrally adjacent light sources to a spatial area;
- (c) a spatial light modulator that the two spectrally adjacent light sources;
- (d) a controller system to alternately provide illumination from each spectrally adjacent light source by controlling the optical shutter in conjunction with the corresponding image from the spatial light modulator;
- (e) projection optics for delivering imaging light from the spatial light modulator to a projection surface;
- (f) filter glasses for the viewer to selectively transmit one adjacent spectral band state to each eye, while rejecting the second adjacent spectral band.
3 more elements
Dependencies are inferred from the claim text.