Suppose an eyeglass manufacturer uses TiO2 (n=2.6) as a reflective coating on a lense, and the coating must be at least 1 um thick for structural stability. The manufacturer tries to minimize of the middle of the visible, at 500nm. a) What thickness should they make the coating? b) When a bright light is behind you, you might get enhanced reflection at certain wavelengths. Find three wavelengths and decide if this could be a problem. C) Would a thicker coating help?
Suppose an eyeglass manufacturer uses TiO2 (n=2.6) as a reflective coating on a lense, and the coating must be at least 1 um thick for structural stability. The manufacturer tries to minimize of the middle of the visible, at 500nm. a) What thickness should they make the coating? b) When a bright light is behind you, you might get enhanced reflection at certain wavelengths. Find three wavelengths and decide if this could be a problem. C) Would a thicker coating help?
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Suppose an eyeglass manufacturer uses TiO2 (n=2.6) as a reflective coating on a lense, and the coating must be at least 1 um thick for structural stability. The manufacturer tries to minimize of the middle of the visible, at 500nm.
a) What thickness should they make the coating?
b) When a bright light is behind you, you might get enhanced reflection at certain wavelengths. Find three wavelengths and decide if this could be a problem.
C) Would a thicker coating help?
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