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CIE 191

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CIE 191 2010 Edition, January 1, 2010 RECOMMENDED SYSTEM FOR MESOPIC PHOTOMETRY BASED ON VISUAL PERFORMANCE

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Description / Abstract: INTRODUCTION

This report summarises the work of CIE TC1-58, which was established with the terms of reference: "To define mesopic visual performance and related terms. To investigate performance based photometry in the luminance region below approximately 10 cd⋅m-2. To propose a model for the basis of performance based mesopic photometry."