METHOD FOR EVALUATING VISIBILITY OF OCULAR LENS

摘要

PROBLEM TO BE SOLVED: To provide a method for evaluating visibility of an ocular lens which has an established method for evaluating visibility of the ocular lens during the development of the lens without requiring trials and errors by a field test of a prototype.SOLUTION: A color-gamut area ratio At formed by coordinates inside a color space of a testing color or inside a color appearance model under reference light which transmits a lens to be evaluated is obtained, and a color-gamut area ratio Ar formed by the coordinates inside the color space of the testing color or inside the color appearance model under reference light having the same correlated color temperature as the reference light which transmits the lens to be evaluated is obtained, and (color-gamut-area ratio At/color-gamut-area ratio Ar)×100 is used as a visibility evaluation index.