Invention Grant
- Patent Title: Lighting devices having remote lumiphors that are excited by lumiphor-converted semiconductor excitation sources
- Patent Title (中): 照明设备具有被荧光转换半导体激发源激发的远程荧光体
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Application No.: US13891744Application Date: 2013-05-10
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Publication No.: US09220149B2Publication Date: 2015-12-22
- Inventor: Paul Pickard , Antony P. Van de Ven , Ronan P. LeToquin
- Applicant: Cree, Inc.
- Applicant Address: US NC Durham
- Assignee: Cree, Inc.
- Current Assignee: Cree, Inc.
- Current Assignee Address: US NC Durham
- Agency: Myers Bigel Sibley & Sajovec, P.A.
- Main IPC: H01L33/50
- IPC: H01L33/50 ; H05B33/12 ; H01L25/075 ; H01L33/48
Abstract:
Lighting devices include a semiconductor light emitting device and first and second spaced-apart lumiphors. The first lumiphor has a first surface that is positioned to receive radiation emitted by the semiconductor light emitting device and a second surface opposite the first surface. The second lumiphor has a first surface that is positioned to receive radiation emitted by the semiconductor light emitting device and radiation emitted by the luminescent materials in the first lumiphor. The first lumiphor is a leaky lumiphor in that the luminescent materials therein wavelength convert less than 90% of the radiation from the semiconductor light emitting device light that is incident on the first lumiphor.
Public/Granted literature
Information query
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