Graph of Dark Adaptation Time on Various Adapting Luminance.

Keyword

Dark Adaptation Time,Threshold Luminance,Adaptation Luminance,Photons,trolands.

Reference

[1]:『THE INFLUENCE OF LIGHT ADAPTATION ON SUBSEQUENT DARK ADAPTATION OF THE EYE』(SELIG HECHT・CHARLES HAIG・AURIN M.CHASE).
[2]:『照明ハンドブック第2版』(社団法人照明学会).

Remarks

・Not "trolands" as the unit in the thesis but "Photons" is used.
・『A photon is the retinal illumination produced when the eye looks through a 1sq.mm. pupil at a surface whose brightness is π/10 millilamberts.』(Reference[1]).
・1mL=(10^4)/π/(10^3)=10/π(cd/m^2). π/10(mL)=π/10*10/π=1(cd/m^2).
・Colored Portion:The Portion that Cone function predominantly works.
・Coloreless Portion:The Portion that Rod function predominantly works.

History

・2014/08/05:layout change.
・2009/11/05:Upload.