Invention Grant
- Patent Title: Systems and methods for controlling solid state lighting during dimming and lighting apparatus incorporating such systems and/or methods
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Application No.: US13742008Application Date: 2013-01-15
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Publication No.: US10231300B2Publication Date: 2019-03-12
- Inventor: Mark Cash , Shawn Hill
- 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 ; H05B33/08
Abstract:
A lighting apparatus having a plurality of light-emitting devices (LEDs) can include at least one first LED that is configured to emit first chromaticity light, at least one second LED that is configured to emit second chromaticity light, and at least one additional LED that is configured to emit third chromaticity light. A control circuit can be operatively coupled to the plurality of light-emitting devices and configured to cause a color temperature produced by the plurality of LEDs to vary substantially in conformance with a Planckian locus in response to a dimming control input less than about 1800K.
Public/Granted literature
Information query
