LASER ILLUMINATED MICRO-MIRROR PROJECTOR
First Claim
1. A digital image projector comprising:
- a plurality of light modulation assemblies, each light modulation assembly comprising;
at least one laser light source configured to provide an illumination beam,a coated surface treated to transmit and reflect light according to its incident angle, andspatial light modulator comprising an array of micromirrors,wherein the coated surface is configured to direct the illumination beam toward the spatial light modulator, andwherein each micromirror in the spatial light modulator is selectively actuable to modulate the illumination beam and to redirect output modulated light back to the coated surface and out of the corresponding light modulation assembly; and
a dichroic combiner comprising a plurality of surfaces treated to selectively transmit or reflect light according to its wavelength and configured to direct the output modulated light from each of the plurality of light modulation assemblies toward projection optics for projection onto a display surface.
18 Assignments
0 Petitions
Accused Products
Abstract
A digital image projector includes a plurality of light modulation assemblies and a dichroic combiner. Each light modulation assembly includes at least one laser light source configured to provide an illumination beam, an optional a coated surface, and a spatial light modulator. If the coated surface is present, the respective laser light source is configured to direct the illumination beam to the coated surface, which directs the illumination beam toward the respective spatial light modulator. Otherwise, the respective laser light source is configured to direct the illumination beam directly toward the respective spatial light modulator. The spatial light modulator redirects output modulated light back to the coated surface, if present, and out of the corresponding light modulation assembly. The dichroic combiner directs the output modulated light from each of the plurality of light modulation assemblies toward a projection lens for projection onto a display surface.
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Citations
22 Claims
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1. A digital image projector comprising:
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a plurality of light modulation assemblies, each light modulation assembly comprising; at least one laser light source configured to provide an illumination beam, a coated surface treated to transmit and reflect light according to its incident angle, and spatial light modulator comprising an array of micromirrors, wherein the coated surface is configured to direct the illumination beam toward the spatial light modulator, and wherein each micromirror in the spatial light modulator is selectively actuable to modulate the illumination beam and to redirect output modulated light back to the coated surface and out of the corresponding light modulation assembly; and a dichroic combiner comprising a plurality of surfaces treated to selectively transmit or reflect light according to its wavelength and configured to direct the output modulated light from each of the plurality of light modulation assemblies toward projection optics for projection onto a display surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A digital image projector comprising:
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a plurality of light modulation assemblies, each light modulation assembly comprising; at least one laser light source configured to provide an illumination beam, and a spatial light modulator comprising an array of micromirrors, each micromirror selectively actuable to modulate the illumination beam and to redirect output modulated light out of the corresponding light modulation assembly; and a dichroic combiner comprising a plurality of surfaces treated to selectively transmit or reflect light according to its wavelength and configured to direct the output modulated light from each of the plurality of light modulation assemblies toward projection optics for projection onto a display surface. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22)
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Specification