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Scope Coatings

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Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/24/2004 at 17:30
Rusty View Drop Down
Optics Apprentice
Optics Apprentice

Joined: April/12/2004
Location: United States
Status: Offline
Points: 147
While at an optics store, one of the older salesman tried to tell me that the optical coating(s) on binlculars, riflescopes, and spotting scopes degrade over time with exposure to air/light and due to slight material instability.  I don't buy this.  I know scope coatings can be worn off by improper cleaning, or washed off with solvents like Windex.  Has anyone heard of quality scope coatings naturally degrading (without abuse) over a 5 - 6 year span?   
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/24/2004 at 17:39
koshkin View Drop Down
Dark Lord of Optics

Joined: June/15/2004
Location: United States
Status: Offline
Points: 11790
That depends on when those coatings were made.  Early coatings were hydrophilic and exposure to moisture would wear them out over time.  Modern day coatings can only be worn out via mechanical or chemical means (or extreme heat).
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