Color-rendering index


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Color-rendering index

A method for describing the effect of a light source on the color appearance of objects, compared to a reference source of the same color temperature. The highest CRI attainable is 100. Typical cool white fluorescent lamps have a CRI of 62. Lamps having rare-earth phosphors are available with a CRI of 80 and above. In a daylighting context, the CRI defines the spectral transmissive quality of glasses or other transparent materials. In this case, values of 95 or better are considered acceptable.
References in periodicals archive ?
Available in 2700K, 3000K, 3500K and 4000K correlated color temperatures (CCTs), FINO Ceiling offers a color-rendering index (CRI) of 80, 6w or 12w per foot optics, standard 0-10v dimming, a 50,000-hour life and an industry leading 10-year limited warranty.
Most metal-halide lamps offer a color-rendering index (CRI) in the 60s.
At 20mA, emission and color temperature are similar to a daylight-color fluorescent lamp and its color-rendering index is similar to a triphosphor fluorescent lamp.
High brightness LEDs (70 color-rendering index, 5700K color temperature) ensure low comparative lumen loss throughout its 50,000-hour effective life and provide continuing uniformity and brightness.
The high performance solution for retail, supermarket and commercial accent and display lighting applications, FIATO is available in color temperatures ranging from 2700-4000K, has a color-rendering index (CRI) up to 95, with a long life of 50,000 hours.
It offers a color of ~ 4800 CCT and color-rendering index of 72.
Available in 2700K, 3000K, 3500K and 4000K correlated color temperatures (CCTs), FINO offers a color-rendering index (CRI) of 80+, standard 0-10v dimming, 50,000 hours of life and an industry leading 10-year limited warranty.
Available in color temperatures ranging from 2700-4000K, this LED luminaire has a color-rendering index (CRI) up to 95 with a long life of 50,000 hours.
OSRAM's first-year deliverable is an advanced prototype light source where each tile in the module has a luminous efficacy of 7 lumens-per-watt (lm/W) and a color-rendering index (CRI) of about 80.
With a color-rendering index (CRI) of 96 and color temperature of 3700K, the AIM-200 O.
With a color-rendering index (CRI) of 96 and color temperature of 3700K, the AIM-200 helps to enhance a physician's vision during minor surgery by providing a clear, crisp, natural light.