Digital projection system optical reflector having facets
AssigneeHewlett-Packard Development Company, L.P.
InventorMichael Pate
Life of this patent
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Abstract
An optical reflector is positionable between one or more light sources and one or more spatial light modulators (SLM's) within a digital projection system. The optical reflector includes a substrate having a surface to render non-uniform light from the light sources to the SLM's more uniform with one reflection off the substrate, and a number of facets within the surface of the substrate.
Claims42
An optical reflector physically positioned after one or more light sources within a digital projection system also including one or more spatial light modulators (SLM's), comprising:
- a reflective substrate having a surface to render non-uniform light from the light sources to the SLM's more uniform with one reflection off the substrate, the substrate physically positioned after the light sources;
- and,
- a plurality of facets within the surface of the substrate.
An optical reflector physically positioned after one or more light sources within a digital projection system also including one or more spatial light modulators (SLM's), comprising:
- a substrate having a surface, the substrate physically positioned after the light sources;
- and,
- a plurality of features within the surface of the substrate to render illumination from the light sources more uniformly on the SLM's within the digital projection system in one reflection.
A digital projection system comprising:
- a plurality of spatial light modulators (SLM's) that are controlled in accordance with digital image data to be projected by the digital projection system;
- one or more light sources to output light for modulation by the plurality of SLM's;
- and,
- an optical mechanism physically situated after the light sources, and having a plurality of facets on a hyperbolic reflective surface to reflect the light output by the light sources once before arriving at the plurality of SLM's.
A digital projection system comprising:
- a plurality of spatial light modulators (SLM's) that are controlled in accordance with digital image data to be projected by the digital projection system;
- one or more light sources to output light for modulation by the plurality of SLM's;
- and,
- an optical substrate physically situated after the light sources and having a plurality of features to render the light from the light sources more uniformly onto the plurality of SLM's with one reflection of the light.
A digital projection system comprising:
- means for spatially modulating light in accordance with image data to be projected by the digital projection system;
- means for outputting the light to be spatially modulated;
- and,
- means for rendering the light more uniformly after output of the light and before spatial modulation of the light, with one reflection of the light, the means for rendering the light more uniformly physically positioned after the means for outputting the light.
A method comprising:
- outputting light from one or more light sources of a digital projection system onto a plurality of facets of an optical substrate of the digital projection system, the optical substrate physically situated after the light sources of the digital projection system;
- and,
- rendering the light more uniformly by the plurality of facets of the optical substrate, onto a plurality of spatial light modulators (SLM's) of the digital projection system, by the plurality of facets singly reflecting the light.
A method comprising:
- providing a plurality of spatial light modulators (SLM's) of a digital projection system that are controllable in accordance with digital image data to be projected by the digital projection system;
- providing one or more light sources of the digital projection system capable of outputting light for modulation by the plurality of SLM's;
- and,
- physically situating an optical mechanism of the digital projection system after the light sources, the optical mechanism having a plurality of facets to render the light output by the light sources more uniformly via a single reflection before arriving at the plurality of SLM's.
Dependencies are inferred from the claim text.