A transparent look at the measurement and application of colour rendering in the use of LED light sources

F. W. Leuschner; J. G. J. Van Der Westhuyzen

doi:10.1117/12.2064823

23 June 2014 A transparent look at the measurement and application of colour rendering in the use of LED light sources

F. W. Leuschner, J. G. J. Van Der Westhuyzen

Proceedings Volume 9257, Sensors, MEMS and Electro-Optical Systems; 925708 (2014) https://doi.org/10.1117/12.2064823
Event: Third Conference on Sensors, MEMS and Electro-Optic Systems, 2014, Skukuza, Kruger National Park, South Africa

Abstract

The technology for the measurement of colour rendering and colour quality is not new, but many parameters related to this issue are currently changing. A number of standard methods were developed and are used by different specialty areas of the lighting industry. CIE 13.3 has been the accepted standard implemented by many users and used for many years. Light-emitting Diode (LED) technology moves at a rapid pace and, as this lighting source finds wider acceptance, it appears that traditional colour-rendering measurement methods produce inconsistent results. Practical application of various types of LEDs yielded results that challenged conventional thinking regarding colour measurement of light sources. Recent studies have shown that the anatomy and physiology of the human eye is more complex than formerly accepted. Therefore, the development of updated measurement methodology also forces a fresh look at functioning and colour perception of the human eye, especially with regard to LEDs. This paper includes a short description of the history and need for the measurement of colour rendering. Some of the traditional measurement methods are presented and inadequacies are discussed. The latest discoveries regarding the functioning of the human eye and the perception of colour, especially when LEDs are used as light sources, are discussed. The unique properties of LEDs when used in practical applications such as luminaires are highlighted.

Citation Download Citation

F. W. Leuschner and J. G. J. Van Der Westhuyzen "A transparent look at the measurement and application of colour rendering in the use of LED light sources", Proc. SPIE 9257, Sensors, MEMS and Electro-Optical Systems, 925708 (23 June 2014); https://doi.org/10.1117/12.2064823

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KEYWORDS

Light emitting diodes

Light sources

Eye

Retina

Radium

Light

Standards development

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