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US 2002/0163302 A1Published application
Light emitting device
AssigneesKabushiki Kaisha Toshiba, Toyoda Gosei Co., Ltd.
InventorsKoichi Nitta, Hiroaki Oshio, Kenji Shimomura, Tomokazu Kitajima, Nozomu Takahashi, Yuji Takahashi, Toshiya Uemura, Koichi Ota
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Abstract
A light emitting device, free from change of color even when the wavelength of a light emitting element shifts, includes a light emitting element (106) for emitting primary light having an intensity peak at a wavelength shorter than 400 nm; a silicone resin (111) provided to embed the light emitting element; and a fluorescent element (110) contained in the silicone resin to absorb the primary light and release visible light.
Claims7
A light emitting device comprising:
- a light emitting element which emits primary light;
- a silicone resin provided to embed said light emitting element and having a hardness in the range of 50 to 90 in JISA value;
- and
- a fluorescent element contained in said silicone resin to absorb said primary light and release visible light.
1 more element
Dependencies are inferred from the claim text.