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Do you have a spectral output chart for those LEDs? You might be surprised how much blue is still in the output.
by mark-r 8y ago
Do you have a spectral output chart for those LEDs? You might be surprised how much blue is still in the output.
- mafuyu 8y agoYeah, especially with these cheapo Chinese LEDs. I looked into spectrometers, but they seem pretty pricey. Maybe some sort of plastic filter that blocks the shorter wavelengths?
- bb88 8y agoHow about a simple prism? That would tell you instantly if there's any blue light in the stream. Edit: You might need a mask to create a slit of light so you can see the spectrum clearly.
- mafuyu 8y agoOh, yeah! Totally forgot about those from high school chemistry class. :) I'm sure there'll be _some_ blue light. I don't know if a prism would be high resolution enough to tell if it's a dangerous level.
- bb88 8y agoYeah, you won't be able to see the intensity, but you will be able to see what components of the spectrum are there. It's also and easy way to test filters.