Measurements
CCT – Correlated Colour Temperature
TM-30-15 – IES Method for Evaluating Colour Rendition
CRI (Re) – Colour Rendering
CRI (Ra) – Colour Rendering
CQS – Colour Quality Scale (NIST)
R1-R15
lux – Illuminance
Foot Candle
CIE 1931 – Chromaticity Coordinate
CIE 1976 – Chromaticity Coordinate
Spectrum
C78.37 7-2008
IEC-SDCM – Standard Deviation of Colour Matching
λp – Peak Wavelength
λD – Dominant Wavelength
Pe – Purity
Duv – Colour shift based on the CIE 1960 u-v coordinates
SP Ratio – Scotopic:Photopic Ratio
PPFD – Photosynthetic Photon Flux Density
TLCI (QA) – Television Lighting Consistency Index (European Broadcasting Union)
GAI – Gamut Area Index
Flicker Index
Flicker %
Flicker Frequency