Invention Grant
- Patent Title: Light source and method of controlling light spectrum of an LED light engine
- Patent Title (中): 控制LED光源的光谱的光源及方法
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Application No.: US12264723Application Date: 2008-11-04
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Publication No.: US08018139B2Publication Date: 2011-09-13
- Inventor: Der Jeou Chou
- Applicant: Der Jeou Chou
- Applicant Address: US AZ Tempe
- Assignee: Enertron, Inc.
- Current Assignee: Enertron, Inc.
- Current Assignee Address: US AZ Tempe
- Agency: Patent Law Group
- Agent Robert D. Atkins
- Main IPC: H01L33/00
- IPC: H01L33/00
Abstract:
A light emitting diode (LED) light engine includes a substrate for supporting the LED light engine. Conductive traces are formed over the substrate using a thick film screen printing, physical vapor deposition, chemical vapor deposition, electrolytic plating, printed circuit board fabricating, or electroless plating process. The conductive traces include mounting pads. LEDs are mounted to each of the mounting pads for electrical interconnection. The LEDs include red LEDs, green LEDs and blue LEDs. Each of the blue LEDs is at least partially covered with a yellow phosphor coating compound. The concentration of the yellow phosphor coating compound is controlled to allow the emission of blue and yellow spectrum light energy from each blue LED. Emissions of light energy from the red LEDs, green LEDs and blue LEDs are combined to achieve a target correlated color temperature and a target color rendering index for the LED light engine.
Public/Granted literature
- US20090114932A1 Light Source and Method of Controlling Light Spectrum of an LED Light Engine Public/Granted day:2009-05-07
Information query
IPC分类:
