Abstract

The paper reports case studies of using LEDs in road lighting and introduces the impacts of the new CIE TC1-58 mesopic photometry on road lighting design and energy efficiency. The use of the mesopic dimensioning changes the luminous output and consequently the luminous efficacy orders of lamps. The paper compares the luminous output of light sources used in outdoor lighting (discharge lamps, LEDs) when using the mesopic dimensioning. The paper discusses the changes that are expected to face road lighting design and practice in the near future.

© 2010 Optical Society of America

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