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US 2010/0302480 A1Published application
Edge lit locally dimmed display
AssigneeDolby Laboratories Licensing Corporation
InventorsLorne WHITEHEAD, Greg WARD, Wolfgang STUERZLINGER, Helge SEETZEN
Life of this patent
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Abstract
An edge lit locally dimmed display has a spatial light modulator illuminated by a light source. The light source is positioned at an edge and behind the spatial light modulator. The spatial light modulator is illuminated with a low resolution version of a desired image. The illumination may comprise a series of lighting elements that vary smoothly from one element to another at the spatial light modulator.
Claims33
An edge lit locally dimmed display, comprising:
- a spatial light modulator;
- a light source configured to cause an illumination of the spatial light modulator;
- wherein:
- the light source is at an edge and behind a viewing side of the spatial light modulator;
- and
- the illumination comprises a low resolution version of a desired image.
3 more elements
A locally dimmed display method, comprising the steps of:
- energizing a lighting device;
- reflecting light from the energized lighting device onto a spatial light modulator;
- and
- modulating the reflected light to produce a desired image;
- wherein:
- the reflected light comprises a low resolution version of a the desired image;
- and
- the lighting device is located at an edge and behind the spatial light modulator.
5 more elements
A display device, comprising:
- a spatial light modulator;
- and
- a lighting source;
- wherein the lighting source is configured to contribute to the production of a low resolution version of a desired image to be imaged onto the spatial light modulator;
- wherein the low resolution version of the desired image comprises a series of low resolution lighting elements that mix together to form a smoothly varying pattern of light on the spatial light modulator including a spread function of 0.3d2 to 3d2 where d2 is a spacing between the lighting elements
2 more elements
Dependencies are inferred from the claim text.