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

Ching Cherng Sun, Tsung Xian Lee, Shih Hsin Ma, Ya Luan Lee, Shih Ming Huang

Research output: Contribution to journalArticlepeer-review

176 Scopus citations

Abstract

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 onedimensional 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.

Original languageEnglish
Pages (from-to)2193-2195
Number of pages3
JournalOptics Letters
Volume31
Issue number14
DOIs
StatePublished - 15 Jul 2006

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