Metric · Photonics, MEMS & Sensors
CRI (Colour Rendering Index)
A zero to 100 score for how faithfully a light source reproduces object colours compared with a reference illuminant of the same correlated colour temperature.
- Also known as
- Ra, Color Rendering Index
- Type
- Metric
- Domain
- Photonics, MEMS & Sensors, Display and LED
Notes
Criticised for a weak red sample set, so the TM-30 fidelity and gamut metrics are increasingly quoted alongside it.
Related terms
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