Multiwavelength solid-state lamps with an enhanced number of rendered colors

摘要

The configuration of polychromatic sources of white light, which are composed of at least two groups of colored emitters, such as light-emitting diodes (LEDs), is disclosed. Based on a novel approach of the assessment of quality of white light using, for example, 1269 test color samples from the enhanced Munsell palette, the spectral compositions of light, such as white light, composed of two to five (or more) narrow-band emissions with the highest number of colors relevant to human vision rendered almost indistinguishably from a reference source, such as a blackbody radiator, are introduced. An embodiment of the current invention can be used, in particular, for configuring polychromatic sources of white light with the ultimate quality capable of rendering of all colors of the real world.

主权项

1. A method of fabricating a light source, the method comprising:
obtaining at least two sets of visible-light emitters, each set of emitters having a primary color; and configuring the at least two sets of visible-light emitters using a plurality of test color samples including more than fourteen test color samples resolved by an average human eye as different and a reference light source dissimilar from the at least two sets of visible-light emitters, by performing a method comprising:
selecting at least one of: the primary colors or relative fluxes generated by each set of emitters to maximize a number of the plurality of test color samples for which, when illuminated using the light source having a predetermined correlated color temperature instead of the reference light source having the same correlated color temperature:
chromaticity shifts resulting from use of the light source instead of the reference light source are preserved within corresponding regions of a chromaticity diagram, each region defined by a color at a center of the region and a predetermined chromaticity variation value from the color at the center of the region; andlightness shifts resulting from use of the light source instead of the reference light source are preserved within a predetermined lightness variation value.