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US 7,106,505 B2Granted
High dynamic range display devices
AssigneeThe University of British Columbia
InventorsLorne Whitehead, Greg Ward, Wolfgang Stuerzlinger, Helge Seetzen
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Abstract
A display has a screen which incorporates a light modulator. The screen may be a front projection screen or a rear-projection screen. Elements of the light modulator may be controlled to adjust the intensity of light emanating from corresponding areas on the screen. The display may provide a high dynamic range.
Claims42
A front projection display comprising:
- a light source;
- first spatial light modulator located to modulate light from the light source;
- a display screen comprising a second spatial light modulator;
- and,
- an optical system configured to image light modulated by the first spatial light modulator onto a first face of the display screen;
- wherein the display screen is configured to reflect light to a viewer, each of the first and second spatial light modulators comprises a two-dimensional array of controllable elements capable of modulating light, the first light modulator has a first resolution and the second spatial light modulator has a second resolution different from the first resolution.
3 more elements
A front-projection display comprising:
- first spatial modulation means for providing light spatially modulated at a first spatial resolution;
- a display screen comprising a second spatial modulation means for further spatially modulating the light at a second resolution different from the first resolution;
- and,
- means for controlling the first and second spatial modulation means to display an image defined by image data;
- wherein the display comprises a front projection-type display and the display screen is configured to reflect light to a viewer.
2 more elements
Dependencies are inferred from the claim text.