Open AccessFunction fitting the symmetric radiation pattern of a LED with attached secondary optic
Author(s) -
David Kaljun,
Janez Žerovnik
Publication year - 2014
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.22.029587
Subject(s) - optics , trigonometric functions , radiation , genetic algorithm , heuristics , function (biology) , physics , computer science , algorithm , mathematics , mathematical optimization , geometry , evolutionary biology , biology
The analytical model [Moreno and Sun, Opt. Express 16, 1808-1819 (2008)] is applied to LED with attached secondary optics. It is shown that a slightly modified model using only three cosine power functions can be used for the cases with symmetric radiation pattern and that good fitting on realistic examples can be achieved with several standard optimization algorithms including local search heuristics and genetic algorithm.