Invention Grant
- Patent Title: Solid state lighting apparatus and circuits including LED segments configured for targeted spectral power distribution and methods of operating the same
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Application No.: US14281131Application Date: 2014-05-19
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Publication No.: US09839083B2Publication Date: 2017-12-05
- Inventor: Antony P. van de Ven , Matthew C. Reynolds
- Applicant: Cree, Inc.
- Applicant Address: US NC Durham
- Assignee: Cree, Inc.
- Current Assignee: Cree, Inc.
- Current Assignee Address: US NC Durham
- Agency: Myers Bigel, P.A.
- Main IPC: H05B37/02
- IPC: H05B37/02 ; H05B39/04 ; H05B41/36 ; G05F1/00 ; H01L33/00 ; H05B33/08
Abstract:
A dimmable solid state lighting apparatus can include a plurality of light emitting diode (LED) segments including a first LED segment that can have a targeted spectral power distribution for light emitted from the apparatus that is different than spectral power distributions for other LED segments included in the plurality of LED segments. An LED segment selection circuit can be configured to selectively control current through the plurality of LED segments to shift the light emitted by the apparatus to the targeted spectral power distribution responsive to dimming input.
Public/Granted literature
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