AN EXPERIMENTAL APPROACH TO A DEFINITION OF THE MESOPIC ADAPTATION FIELD

摘要

CIE 191:2010 recommends a mesopic photometry system that defines the spectral luminous efficiency function for peripheral visual tasks. To apply the system to lighting applications, the visual adaptation condition needs to be determined, but the visual adaptation field has not yet been defined. To obtain such empirical data, psychophysical experiments have been conducted to measure the effect of the surround luminance to the adaptation state. The results show that the adaptation state depends mostly on the local luminance. These results imply that the adaptation field differs for each lighting application.