Technologies

LED TechnologyColor Rendering IndexColor Temperature

Color Rendering Index

A color rendering index (CRI) is a quantitative measure of the ability of a light source to reveal the colors of various objects faithfully in comparison with an ideal or natural light source. Light sources with a high CRI are desirable in color-critical applications such as neonatal care, photography and cinematography.

Numerically, the highest possible CIE Ra value is 100, and would only be given to a source identical to standardized daylight or a Black body (incandescent lamps are effectively blackbodies), dropping to negative values for some light sources. Low-pressure sodium lighting has negative CRI; fluorescent lights range from about 50 for the basic types, up to about 90 for the best tri-phosphor type. Typical LEDs have about 80+ CRI, Noorina production working on to achieve a 98 CRI in our LED products