Tuesday, 25 August 2015
Spectroscopy of EnChroma Cx 15 lenses
I have taken a few spectroscopy images of the white light of a halogen bulb as viewed directly, and through a pair of normal (polarised) brown-tinted sunglasses, and through the EnChroma Cx 15 lenses.
Here's the direct halogen spectrum, unfiltered:
(Ignore the streak on the left-hand side - the interesting bit is the rainbow on the right.)
This is the spectrum as seen through the normal sunglasses - you can see that they suppress all wavelengths more or less uniformly:
And here's the view through the EnChroma lenses - you can see that they have two very distinct bands where virtually all light is blocked out, while other wavelengths pass with very little attenuation :
I've also shot a short video showing the effect - you should have no trouble working out when the normal sunglasses and the EnChroma lenses come between the light and the spectroscope: