Calculation of Variation of Visual Acuity by Intensity of Background Luminance or Adaptation Luminance.

Keyword

Visual Acuity,Background Luminance,Adaptation Luminance,Visual Angle,Landolt Ring.

Reference

[1]:『照明ハンドブック第２版』(照明学会).
[2]:『均一な背景の下における順応輝度とランドルト環視力』(池田紘一･野田貢次･山口昌一郎).

Remarks

・Approximate Curve for Visual Acuity based on Landolt Ring.VA=L/(0.3775*(0.344+L^(1/4))^4).Reference[2].
・Visual observation distance is 5.55(m) in the experiment to give the approximate curve.Reference[2].
・ Luminance contrast is 92% in the experiment.Reference[2].

History

・2014/08/05：Layout change.
・2009/10/27：Upload.