Defining the visual adaptation field for mesopic photometry: How does a high-luminance source affect peripheral adaptation?

Published

October 25, 2015

Author(s)

Yoshihiro Ohno, Tatsukiyo Uchida

Abstract

CIE 191:2010 recommends the mesopic photometry system, in which the luminous efficiency function is determined from the adaptation luminance. However, it cannot be practically implemented because the adaptation field to determine the adaptation luminance is not defined. Surrounding luminance effect is a key factor to define the adaptation field. Vision experiments have been conducted to measure the surrounding luminance effect on peripheral adaptation state with a point source at varied intensities placed at different position. The results reveal that the effect can be described as veiling luminance and that the magnitude of the effect is larger than that of the foveal veiling luminance. A model for the peripheral veiling luminance proposed by Stiles and Crawford in 1937 shows the best prediction for the surrounding luminance effect.

Citation

Lighting Research & Technology

Volume

47

Issue

7

Pub Type

Journals

Download Paper

https://doi.org/10.1177/1477153514558963

Keywords

mesopic range, mesopic photometry, adaptation field, peripheral vision, luminous efficiency function, street lighting

Citation

Ohno, Y. and Uchida, T. (2015), Defining the visual adaptation field for mesopic photometry: How does a high-luminance source affect peripheral adaptation?, Lighting Research & Technology, [online], https://doi.org/10.1177/1477153514558963 (Accessed January 18, 2025)