Invention Grant
- Patent Title: Color temperature tunable LED-based lamp module
- Patent Title (中): 色温可调LED基灯模块
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Application No.: US13886703Application Date: 2013-05-03
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Publication No.: US09222628B2Publication Date: 2015-12-29
- Inventor: Wei Li , Sergey Kudaev , Mikhail Melnik , Wai Choi , Robert Olma
- Applicant: Excelitas Technologies Corp.
- Applicant Address: US MA Waltham
- Assignee: Excelitas Technologies Corp.
- Current Assignee: Excelitas Technologies Corp.
- Current Assignee Address: US MA Waltham
- Agency: Sheehan Phinney Bass + Green
- Agent Peter A. Nieves
- Main IPC: F21K99/00
- IPC: F21K99/00 ; F21V33/00 ; F21V7/00 ; F21W131/202 ; F21Y101/02 ; F21Y113/00

Abstract:
A light mixing and folding lamp includes an LED assembly with two or more LED chips that direct light into the ingress end of a light mixing rod. The light mixing rod is positioned to pass through an aperture in a concave second reflecting element, and mixed light emerges from the egress end of the light mixing rod, where it is directed toward a first reflecting element positioned near a focal point of the second reflecting element. The first reflecting element reflects mixed light emerging from the egress end of the light mixing rod, folding the mixed light back toward a concave reflecting surface of the second reflecting element. The second reflecting element reflects light from the first reflecting element forward, where the light emerges from the lamp directed toward a subject to be illuminated.
Public/Granted literature
- US20130294103A1 COLOR TEMPERATURE TUNABLE LED-BASED LAMP MODULE Public/Granted day:2013-11-07
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