For International Standardization of the Glare Rating Method of the LED Lighting(<Special Issue>Towards Standardization of LED Lighting-Direction of Japan's Strategy for Globalization)

Abstract

As the fundamental knowledge of the Glare Rating, this article explains the distinction of disability glare and discomfort glare, the distinction of contrast effect and total effect on the glare, and the relation between adaptation and glare sensation. With that in mind, glare rating method used in every lighting field is introduced and classified. The foveal and peripheral vision, and its spectral sensitivity characteristics are pointed out as the issue of glare rating method. In the international standardization of glare rating system for the LED lighting era, the way of it and its evaluation standard are shown.