A discontinuous surface reflector for high-power integrated LEDs. (October 2014)

• Record Type: Journal Article
• Authors: Liu, F; Chen, L; Tang, B; Hu, Y; Lin, Q; Lei, L
• Is Part Of: Lighting research & technology. Volume 46:Number 5(2014:Oct.)
• Page Start: 567
• Page End: 575
• Publication Date: 2014-10
• Subjects: Lighting -- Periodicals; 621.32
• DOI: 10.1177/1477153513513918
• Languages: English
• ISSNs: 1477-1535

Abstract

High-power integrated LEDs usually have a bright square surface. When the rays emitted from them are collected to project a round spot at a very short distance using a rotationally symmetrical reflector, there will be a dark spot in the centre. This problem can be avoided in advanced lighting systems. A discontinuous surface reflector is designed by a simple method based on the three-dimensional form of compound parabolic concentrators. The dark spot is removed, and the uniformity is better.