Fluorescence errors in integrating sphere measurements of remote phosphor type LED light sources

A. Keppens; Y. Zong; V. B. Podobedov; M. E. Nadal; P. Hanselaer; Y. Ohno

doi:10.1117/12.889382

27 May 2011 Fluorescence errors in integrating sphere measurements of remote phosphor type LED light sources

A. Keppens, Y. Zong, V. B. Podobedov, M. E. Nadal, P. Hanselaer, Y. Ohno

Proceedings Volume 8082, Optical Measurement Systems for Industrial Inspection VII; 808241 (2011) https://doi.org/10.1117/12.889382
Event: SPIE Optical Metrology, 2011, Munich, Germany

Abstract

The relative spectral radiant flux error caused by phosphor fluorescence during integrating sphere measurements is investigated both theoretically and experimentally. Integrating sphere and goniophotometer measurements are compared and used for model validation, while a case study provides additional clarification. Criteria for reducing fluorescence errors to a degree of negligibility as well as a fluorescence error correction method based on simple matrix algebra are presented. Only remote phosphor type LED light sources are studied because of their large phosphor surfaces and high application potential in general lighting.

Citation Download Citation

A. Keppens, Y. Zong, V. B. Podobedov, M. E. Nadal, P. Hanselaer, and Y. Ohno "Fluorescence errors in integrating sphere measurements of remote phosphor type LED light sources", Proc. SPIE 8082, Optical Measurement Systems for Industrial Inspection VII, 808241 (27 May 2011); https://doi.org/10.1117/12.889382

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