It’s an approximation method, as is predicted for use in an analogous technique to different optical approximations resembling ‘color temperature’, lumens and beam angle.
CCI works like this
The purpose is to provide a single quantity which sums up how even a beam will seem when shone on to a white floor, permitting totally different LED and optical combos to be in contrast.
“It is rather troublesome to quantify the standard of color as a result of everybody has a distinct technique to understand color,” in response to Gaggione. “We discovered it essential to create a unit of measurement that permits the quantification of the standard of color mixing in a scientific approach.”
The ensuing ‘color consistency index’ is predicated upon physics, colorimetry and a regular deviation calculation.
To extend the probabilities of broad adoption, the agency has chosen to prolonged generally-understood ‘Macadam ellipse’ idea, the place the probability of somebody noticing that two mild sources are totally different will increase with the variety of Macadam ellipses they’re aside on the CIE color chart – with one Macadam ellipse indicating the 2 sources are typically indistinguishable to most individuals, and 4 Macadam ellipses indicating that the majority will see that they’re totally different.
In Gaggione’s case, when a nominally white beam is projected onto a white wall, a rating of Macadam ellipse in its CCI scale will point out no mottling or different color variation seen to most individuals, and so forth.
“Our CCI measurement protocol offers a end result expressed in MacAdam Ellipses steps deviation, already being an trade commonplace for LEDs binning,” mentioned Gaggione. “Any longer, the entire color mixing options printed on our commonplace merchandise choice device have a CCI.”
Can different individuals use CCI?
Sure, if you’re a luminaire maker.
“The method was initially developed for RGBW color mixing purposes, however it additionally works with tunable white luminaires in addition to white static luminaires. For those who can outline a color correlated temperature to your luminaire, then you could characterise it with the color consistency index,” mentioned the agency.
However, what if you’re one other maker of optics?
