yep..curious as to where someone would have used those..adding 660nm red boosts cri but pretty uncommon..Found 4 of these LED bars out of a Cree Ceiling light
Each is 18" long with attached heatsink
Each contains the following LEDs
20x XP-E Photo Red 650-670nm
38x XT-E 6500K
2x XP-G 6200K
Would it be worth it to try to make use of it?
Maybe but only good for B&W photography...darkroom lights?
Since 6200K and 6500k normally have very little visual (but I suppose a possibly higher spectral difference) it is also odd..Another weird thing about it, the leds are in 3 banks (20x reds, 20x 6500k whites, and remaining 6500k and 6200k), but all 3 banks share a common cathode. This means I'm going to need to make cuk drivers to run them