I had a friend take a test that I am about to take and she had a question that asked, what lens has a built-in scratch coat? I can not find an exact answer. would it be semi-finished lens that add it to the mold??
I had a friend take a test that I am about to take and she had a question that asked, what lens has a built-in scratch coat? I can not find an exact answer. would it be semi-finished lens that add it to the mold??
I would guess Poly. Its way too soft without SC.
Glass
Doc beat me to it!!
DragonlensmanWV N.A.O.L.
"There is nothing patriotic about hating your government or pretending you can hate your government but love your country."
Lmao
No lens as far as I know has built in scratch coat. The question sounds incorrectly worded- are you sure that was what they were asking? If the question was "which lens is naturally scratch-resistant" then glass is the obvious answer. If they are essentially asking which lens cannot be distributed (made, used, sold) without scratch resistance, then the answer is "the most horrible material we have ever decided to pawn-off on the unsuspecting general public because it's cheap and we can charge more for it"; or poly for short. Uncoated poly will scratch if you touch it, look at it wrong, or breathe on it.
Aim at heaven and you will get earth thrown in. Aim at earth and you get neither. C.S. Lewis
An explanation of cause is not a justification by reason. C.S. Lewis
LMAO.....well stated hip.
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