μmol/j

The Brief: They state: 3.03μmol/J This calculates to: 80% efficiency The datasheet calculates: 67.35% efficiency What's the skinny: the difference is from the losses on the phosphor The Claim: LM301H 6500K flux data: LM301H 6500K testing parameters: Digitized LM301H 6500K SPD...

Just a quick little post on LED effeciency. Phosphor conversion effeciencies (CE) are never over 1. They approach 1, but never exceed 1 (about 99.9%). This essentially means that photons emitted are maintained, ie the phosphor film doesn't diminish the initial photon quantity, all photons are...