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Does it have good transmission over the whole visible waveband and good attenuation at the longer wavelengths?

April 26, 2017attenuation good longer transmission visible waveband wavelengths

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Does it have good transmission over the whole visible waveband and good attenuation at the longer wavelengths?

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Filters are either made from absorbing glass, (which has a gradually increasing attenuation from the longer wavelength visible red region into the infra red.) or have multiple thin metallic coatings (which have a much more well designed, sharper cut off.