Wednesday, August 25, 2010

The Green LED's Spectrum

A test exposure of the green LED's spectrum with the Kodak Z981 produced this image.

I used a white index card to illuminate the scale with a Sylvania Daylight plus CFL and produce a faint fluorescent spectrum just under the scale for reference. The lines visible are at 546.5 nm and 611.6 nm. The LED has a continuous spectrum over a limited range.

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