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Difference between revisions of "ANSI White"
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# 5000K | # 5000K | ||
# 4500K | # 4500K | ||
# 4000K (neutral) | # 4000K (neutral white) | ||
# 3500K | # 3500K | ||
# 3000K (warm white) | # 3000K (warm white) | ||
# 2700K | # 2700K | ||
This standard was adopted by companies like [[Cree]] and [[Philips Lumileds]] to describe the tint of their LED products. They divided each ANSI rectangle into four quadrants to get bins like 1A, 1B, 1C, and 1D being | This standard was adopted by companies like [[Cree]] and [[Philips Lumileds]] to describe the tint of their LED products. They divided each ANSI rectangle into four quadrants to get bins like 1A, 1B, 1C, and 1D being divisions of rectangle 1 (6500K). Tints lying outside of the ANSI standard, above and below the rectangle, are given names like 1R, 1S, 1T, and 1U. Towards the cold end of the spectrum a non-ANSI rectangle, rectangle 0, was added. Cree subdivides regions 5, 6, 7, and 8 into even smaller subdivisions to get bins like 5A1, 5A2, 5A3, and 5A4, while Lumileds would call all of those 5A. | ||
==Further | ==Further reading== | ||
* [http://www.nema.org/stds/ANSI-ANSLG-C78-377.cfm NEMA website] ANSI standard can be downloaded after registering for free. | * [http://www.nema.org/stds/ANSI-ANSLG-C78-377.cfm NEMA website] ANSI standard can be downloaded after registering for free. | ||
* [http://en.wikipedia.org/wiki/Chromaticity Wikipedia: Chromaticity] | * [http://en.wikipedia.org/wiki/Chromaticity Wikipedia: Chromaticity] | ||
* [http://en.wikipedia.org/wiki/Correlated_color_temperature Wikipedia: Color temperature] | * [http://en.wikipedia.org/wiki/Correlated_color_temperature Wikipedia: Color temperature] | ||