So the other day I over heard one of our opticians talking about how A/R coatings have improved from earlier methods when they just sprayed it on. Now I have heard of spin cast A/R coatings and have heard that the quality is rather low due to the inability to have the spin cast coatings reach the specific thickness needed. I can't imagine any company spraying on an A/R! Of course before I correct her I would like to know if any company ever used such a method.
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