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US 2003/0147055 A1Published application
Light source device, optical device, and liquid-crystal display device
AssigneeSeiko Epson Corporation
InventorOsamu Yokoyama
Life of this patent
Estimating the term…
Abstract
A light source device, comprising a light guide block that is provided with an inner wall capable of reflecting light and is shaped as a hollow component to form a light guide, and a point light source array that is located opposite one end face of the light guide block and is capable of emitting light into the light guide.
Claims14
A light source device comprising:
- a light source array that emits light, the light source array having a plurality of light sources arranged in two directions in a plane;
- a light guide having a first face and a second face, the light guide being adapted to direct the light entering through the first face to a second face so as to output the light from the second face;
- and
- an air layer interposed between the light source array and the first face.
1 more element
A projector comprising:
- a light source that emits light, the light source having at least one LED;
- a light guide having a first face and a second face, the light guide being adapted to direct the light entering through the first face to a second face so as to output the light from the second face;
- a member that outputs modulated light in response to an image signal and the light from the second face of the light guide;
- and
- a projection lens that projects that modulated light.
2 more elements
Dependencies are inferred from the claim text.