Lamp with high color-discrimination capability

摘要

A lamp and method producing a generally purplish light having three constituent emissions in specific wavelength ranges. The light provides for optimum or near optimum color discrimination, and small color differences are 21/2 to 3 times more easily seen under this light than under daylight. The three emissions are located principally within the 400-470 nm, 500-550 nm and 610-680 nm wavelength ranges and the proportions are such that blending the three emissions produces visible light having, in ICI coordinates, an x in the range of about 0.27 to 0.45 and a y in the range of about 0.09 to 0.25.