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US 2004/0070338 A1Published application
White light emitting device
AssigneeCitizen Electronics Co., Ltd.
InventorsKatsuhiko Noguchi, Megumi Horiuchi
Life of this patent
Estimating the term…
Abstract
A blue light emitting element is mounted on a bottom of a case body. A cover member covers the blue light emitting element. Fluorescent material is mixed in the cover member for converting wavelength of light emitted from the blue light emitting element to adjust chromaticity of the light, and luminance reducing material for adjusting the luminance of the light is mixed in the cover member.
Claims17
A white light emitting device comprising:
- a blue light emitting element;
- a cover member for covering the blue light emitting element;
- fluorescent material for converting wavelength of light emitted from the blue light emitting element to adjust chromaticity of the light being mixed in the cover member, and luminance reducing material for adjusting the luminance of the light being mixed in the cover member.
A white light emitting device comprising:
- a case body having a recess forming a reflection face;
- a blue light emitting element mounted on a bottom of the recess;
- a cover member including fluorescent material and covering a light emitting face of the case body;
- fluorescent material for converting wavelength of light emitted from the blue light emitting element to adjust chromaticity of the light, and luminance reducing material for adjusting the luminance of the light being mixed in the cover member.
1 more element
A white light emitting device comprising:
- a case body having a recess forming a reflection face, a blue light emitting element mounted on a bottom of the recess,
- a cover member including fluorescent material and covering a light emitting face of the case body,
- the case body comprising a pair of metal cores which are opposed to each other interposing an insulation member, the surface of each of the metal cores being coated with a metal plating having high reflectance,
- fluorescent material for converting wavelength of light emitted from the blue light emitting element to adjust chromaticity of the light being mixed in the cover member, and luminance reducing material for adjusting the luminance of the light being mixed in the cover member.
1 more element
Dependencies are inferred from the claim text.