Cree: Difference between revisions
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(Created page with "Cree is a LED manufacturing company based in Durham, North Carolina. They produce high output LED's from their XLamp LED series that are widely used in flashlights. Cree bin...") |
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Cree is a [[LED]] manufacturing company based in Durham, North Carolina. They produce high output LED's from their XLamp LED series that are widely used in flashlights. | Cree is a [[LED]] manufacturing company based in Durham, North Carolina. They produce high output LED's from their XLamp LED series that are widely used in flashlights. | ||
Cree bins individual models of LED on the basis of total flux or light output, typically measured at 350mA. Bin numbers might be P4, Q2, Q3, Q4, Q5, R2, R3, R4, and R5 with each bin being about 5% additional flux. The P4 is 80 lumens,a Q5 would be 107 lumens, and the R5 bins are 137 lumens. At higher amperage than 350mA, the brightness goes way up, with the XP-G producing 3 times as many lumens at a maximum current of 1500mA. | Cree bins individual models of LED on the basis of total flux or light output, typically measured at 350mA. Bin numbers might be P4, Q2, Q3, Q4, Q5, R2, R3, R4, and R5 with each bin being about 5% additional flux. The P4 is 80 lumens, a Q5 would be 107 lumens, and the R5 bins are 137 lumens. At higher amperage than 350mA, the brightness goes way up, with the XP-G producing 3 times as many lumens at a maximum current of 1500mA. | ||
Cree classifies tints generally as being warm, neutral, and cool, but has recently added "outdoor white" in between neutral and cool (or as a replacement for cool?). Some LED's, such as the XP-E, XP-G, and MC-E are now sold binned by ANSI tints, such as cool 1B, neutral 5B1, and warm 7D2, though many other tints and subdivisions are available. The chart is available at [http://www.candlepowerforums.com/vb/showthread.php?t=156772 this CPF post]. Those tints are in addition to the brightness bin. | Cree classifies tints generally as being warm, neutral, and cool, but has recently added "outdoor white" in between neutral and cool (or as a replacement for cool?). Some LED's, such as the XP-E, XP-G, and MC-E are now sold binned by ANSI tints, such as cool 1B, neutral 5B1, and warm 7D2, though many other tints and subdivisions are available. The chart is available at [http://www.candlepowerforums.com/vb/showthread.php?t=156772 this CPF post]. Those tints are in addition to the brightness bin. | ||