Invention Grant
- Patent Title: Solid state light source emitting warm light with high CRI
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Application No.: US14188094Application Date: 2014-02-24
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Publication No.: US09599291B2Publication Date: 2017-03-21
- Inventor: Antony Van De Ven , Gerald Negley , Paul Kenneth Pickard
- Applicant: CREE, INC.
- Applicant Address: US NC Durham
- Assignee: CREE, INC.
- Current Assignee: CREE, INC.
- Current Assignee Address: US NC Durham
- Agency: Koppel, Patrick, Heybl & Philpott
- Main IPC: F21K99/00
- IPC: F21K99/00 ; F21V5/00 ; F21V7/00 ; F21V9/00 ; F21V9/08 ; F21V11/06 ; F21V13/04 ; F21V13/08 ; F21V13/14 ; F21V31/04 ; H05B33/08 ; G02B5/20 ; F21Y101/00

Abstract:
Solid state light sources, lighting devices and lamps arranged to provide emission with a warm temperature and high CRI. One embodiment of a solid state lighting device according to the present invention comprises a light emitting diode (LED) device capable of emitting light in an emission spectrum. A filter arranged so that at least some light from the LED light source passes through it, with the filter filtering at least some of one or more portions of the light source emission spectrum. The resulting light source light has a different temperature but substantially the same CRI after passing through the filter.
Public/Granted literature
- US20140168989A1 SOLID STATE LIGHT SOURCE EMITTING WARM LIGHT WITH HIGH CRI Public/Granted day:2014-06-19
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