Invention Grant
- Patent Title: Light emitting diode lamp and light emitting device
- Patent Title (中): 发光二极管灯和发光装置
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Application No.: US12222408Application Date: 2008-08-08
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Publication No.: US08148887B2Publication Date: 2012-04-03
- Inventor: Naoto Hirosaki , Ken Sakuma , Kyota Ueda , Hajime Yamamoto
- Applicant: Naoto Hirosaki , Ken Sakuma , Kyota Ueda , Hajime Yamamoto
- Applicant Address: JP Tsukuba-shi, Ibaraki
- Assignee: National Institute for Materials Science
- Current Assignee: National Institute for Materials Science
- Current Assignee Address: JP Tsukuba-shi, Ibaraki
- Agent Manabu Kanesaka
- Priority: JP2004-041502 20040218
- Main IPC: H01J1/62
- IPC: H01J1/62

Abstract:
A bullet type light emitting diode lamp or a chip-type light emitting diode lamp includes a semiconductor light emitting element, and a plurality of fluorescent materials that absorb part or whole of light emitted from the semiconductor light emitting element, and emit fluorescence at a wavelength different from that of the absorbed light. The fluorescent materials include a phosphor of a CaAlSiN3 crystalline phase.
Public/Granted literature
- US20090167153A1 Light emitting diode lamp and light emitting device Public/Granted day:2009-07-02
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