Invention Grant
- Patent Title: Light emitting devices and systems having tunable chromaticity and methods of tuning the chromaticity of light emitting devices and systems
- Patent Title (中): 具有可调谐色度的发光器件和系统以及调节发光器件和系统的色度的方法
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Application No.: US13682894Application Date: 2012-11-21
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Publication No.: US08740663B2Publication Date: 2014-06-03
- Inventor: Wooh Jae Kim , Gregory S. Bibee , Mark McClear , Robert E. Higley , Joshua Markle
- 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: H01J9/24
- IPC: H01J9/24 ; G05F1/00

Abstract:
A light emitting device package assembly includes a light emitting device package body, and first, second and third white light emitting devices on the package body, each of the first, second and third white light emitting devices emits light when energized having a chromaticity that falls within a respective one of first, second and third non-overlapping chromaticity regions in a two dimensional chromaticity space. The first, second and third chromaticity regions are spaced apart in the two dimensional chromaticity space by respective regions having at least the size of a seven step MacAdam ellipse. Related solid state luminaires and methods are also disclosed.
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