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14.2: A General Theory of Light Recycling with Light Pipes/Tunnels and Their Applications in LED Illuminators
Author(s) -
Ouyang George,
Li Kenneth
Publication year - 2007
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1889/1.2785461
Subject(s) - process (computing) , general theory , optics , computer science , optoelectronics , materials science , environmental science , physics , theoretical physics , operating system
A general theory on light‐pipe/tunnel‐based recycling schemes, along with some experimental data obtained from LED illuminators, is presented in this paper. Light recycling is classified as angular, spatial, or mixed based on the angular filtering characteristics of the recycling process. The principles behind the three schemes are analyzed and some experimental results are presented at the end.