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ArcticMyst Security by Avery

Optical coating question

Joined
Jul 9, 2009
Messages
177
Points
28
I have a pile of unidentified lenses. Some are for red, some blue. Optical coating reflection varies . Some clear, some have a yellowish tint when viewed at an angle, some have a red hue(obviously those are for blueish wavelengths). What gives on the clear, crap or no coating?
 




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