Optics > Interference > Thin Films

DCS# 6D30.xx

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LENS WITH ANTIREFLECTION COATING

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APPARATUS
 

lens with anti-reflection coating	202-21-D4
uncoated lens	202-21-D4

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DESCRIPTION Pass around coated and uncoated lenses so students can compare them.  Note the purple cast of the coated lens, since the coating is optimized for the middle of the visible spectrum and some red and blue light is reflected from the lens.