LED flashlight
Over the recent several years high power white light emitting diodes (LEDs) reached consumer price levels and found their use in flashlights. Compared to conventional lightbulbs, LEDs are more efficient, have longer battery lifetime and are more durable. White LEDs are typically based on blue LEDs (InGaN, indium gallium nitride) coated with doped YAG (yttrium aluminum garnet) crystals which act as a phosphor, down converting part of the blue radiation to a broad spectrum centered in the yellow. The resulting spectral mix has appearance of white light to the human eye. Shown here is a 1 Watt LED flashlight sold in the US by Energizer. Oct 2007.
Size: 3374px × 5100px
Photo credit: © GIPhotoStock X / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: concept, conceptual, consumer, diode, electrical, electronics, emitting, flashlight, gallium, indium, ingan, led, life, light, lighting, nitride, optical, optics, photonics, physics, semiconductor, technology, white
