Invention Grant
- Patent Title: Color temperature adjustment for LED lamps using switches
- Patent Title (中): 使用开关的LED灯的色温调节
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Application No.: US14197288Application Date: 2014-03-05
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Publication No.: US09232602B2Publication Date: 2016-01-05
- Inventor: Wei-Yu Yeh , Chih-Hsuan Sun
- Applicant: TSMC Solid State Lighting Ltd.
- Applicant Address: TW Hsinchu
- Assignee: EPISTAR CORPORATION
- Current Assignee: EPISTAR CORPORATION
- Current Assignee Address: TW Hsinchu
- Agency: Muncy, Geissler, Olds & Lowe, P.C.
- Main IPC: H05B33/08
- IPC: H05B33/08
Abstract:
A light-emitting diode (LED) lamp includes a number of different color LEDs that can be turned on and off in different combinations using an external switch operable by a user. A user or a controller can adjust the color temperature of light output by the lamp. The color temperature change may be a user preference and can compensate for decreased phosphor efficiency over time.
Public/Granted literature
- US20140184081A1 Color Temperature Adjustment for LED Lamps Using Switches Public/Granted day:2014-07-03
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