Luminance Contrast Ratio
Luminance Contrast Ratio (in dark):
CR = Lon/Loff
- measure of visibility in dark room
Luminance Contrast Ratio (in user’s ambient)
CR = (Lon + La)/(Loff + La)
- measure of visibility in user’s ambient
- La depends on reflectivity
=> AR coatings and narrow-band or neutral-density filters needed for display visibility in high ambients