Determination of lights that are isoluminant for both scotopic and photopic vision.
A set of lights can be defined as D isoluminant if it is simultaneously isoluminant for both photopic and scotopic vision. Methods for determining sets of D-isoluminant lights are provided. It is shown that monochromatic lights cannot be made D isoluminant with one another for most of the spectrum and that particular white lights can each be made D isoluminant with a particular monochromatic light. Rules are provided for determining D isoluminance in dichromatic and trichromatic mixtures. The potential uses and limitations of D-isoluminant stimuli are discussed.
Young
R S
RS
Department of Ophthalmology and Visual Science, Texas Tech University Health Sciences Center, Lubbock 79430.
Teller
D Y
DY
D003118:Color Perception / Q000502:physiology; D003623:Dark Adaptation / Q000502:physiology*; D006801:Humans; D008027:Light; D008433:Mathematics; D014785:Vision, Ocular / Q000502:physiology*