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US 7,063,449 B2Granted
Light emitting diode (LED) picture element
AssigneeElement Labs, Inc.
InventorMatthew Ward
Life of this patent
Estimating the term…
Abstract
A picture element lamp is disclosed that mixes light from LEDs in a light guide. The light guide expands the perceived light source and can redirect the light toward viewing locations.
Claims48
A display system comprising:
- a group of lamps, each lamp including different colored LEDs so that the lamps can glow with different color light produced by mixing light of different colored LEDs, each lamp including an edge-lit light guide using substantially total internal reflection to spread the light over a larger area;
- and
- a control unit that drives the colors of the lamps in accordance with a video signal.
A display system comprising:
- a group of lamps, at least some of the lamps being greater than or equal to 20 mm in pixel size and using at least one LED to produce light of different colors, the lamps including an edge-lit light guide using substantially total internal reflection;
- and
- a control unit that sets the color of the lamps in accordance with a video signal.
A display system comprising:
- a group of lamps, each lamps including LEDs an edge-lit light guide substantially total internal using reflections to spread the light over a larger area;
- and
- a control unit that adjusts the intensity of the LEDs in accordance with a video signal.
A display system including:
- a frame;
- a number of edge-lit tiles in the frame, each edge-lit tile having different colored LEDs mounted to a side end surface of the tile, the tile using substantially total internal reflection to mix the light from the different colored LEDs and glow from a second surface that is not opposite to the first surface;
- and
- a control unit that uses a video signal to cause each of the lamps to glow with a color as determined by the video signal.
1 more element
A display system comprising:
- a number of picture elements, each picture element including edge-lit light guide, each edge-lit picture elements with different colored LEDs mounted to a side end surface, the light guide using substantially total internal reflection to mix the light from the different colored LEDs and distribute the light in a 360 degree pattern;
- and
- a control unit that uses a video signal to cause each of the picture elements to glow with a color as determined by the video signal.
Dependencies are inferred from the claim text.