Abstract
The stimulus pattern on photo receptors produced by the image of the target is not the same as the luminance pattern of the target because the intraocular stray light due to the defect of the eye as an optical system superimposed on the retinal image. Therefore, if the visual problems are analyzed by using this actual luminous stimulus to the retina corrected by intraocular stray light, which we call “effective luminance;”, as an input to a visual system, then we can deal with the visual problems very simply. We have confirmed the availability and the applicability of the above concept through visual experiments and photographic luminance measurements using a single lens which simulates a human eye.
