Precise optical modeling for LED lighting verified by cross correlation in the midfield region

A novel LED modeling algorithm for precise three-dimensional light pattern simulation is proposed and demonstrated. We propose to use normalized cross correlation to verify the validity of the simulation in one-dimensional intensity patterns as well as two-dimensional irradiance patterns in various...

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Bibliographic Details
Published inOptics letters Vol. 31; no. 14; p. 2193
Main Authors Sun, Ching-Cherng, Lee, Tsung-Xian, Ma, Shih-Hsin, Lee, Ya-Luan, Huang, Shih-Ming
Format Journal Article
LanguageEnglish
Published United States 15.07.2006
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Summary:A novel LED modeling algorithm for precise three-dimensional light pattern simulation is proposed and demonstrated. We propose to use normalized cross correlation to verify the validity of the simulation in one-dimensional intensity patterns as well as two-dimensional irradiance patterns in various midfield distances and to provide feedback to achieve a successful model. The model is demonstrated to obtain an average of 99% in normalized cross correlation between the simulation light pattern and experimental measurement for a truncated inverse pyramid LED.
ISSN:0146-9592
DOI:10.1364/ol.31.002193