Spray on Rain Guard?

[Dave in WV]

Do you think it's possible to make a product that will work like Rain Guard that is applied by the optics owners? I'm sure it wouldn't last like Rain Guard as it is a permanent coating. If someone came out with such a product that would last at least a week or two in the field it would be worth a fortune. Think of all of the optics already in use. You could use it on scopes, binoculars, and spotting scopes. Rain Gurad is a good product but you have to buy new optics to get it. If you already own good optics why buy new just to get the Rain Guard?  Dave

[TheOpticZone]

Sound like a good idea, but I think that a spray on coating will affect the clarity on the scope.  Have you ever looked thru a pair of sunglasses that have a thin spray on them.  Not very clear.  Looks fuzzy.  Dave, you better work on that, become that millionaire.  :shock:

[Graybeard]

There are numerous such products on the market today. Their primary purpose being to keep eye glasses free of fog and even one or two for windshields. In all cases the ones I've tried leave a film on the surface that makes it more difficult to see than if the glasses were mildly fogged.

Could such a product be developed that wouldn't do that? Dunno. Seems to me as many such products as there are out there if so someone would have by now.

GB

[Dave in WV]

I've never tried anything on my optics. I use RainX on our vehicles and it works well in other than mist. When I posted "spray on" I had in mind you would need to still wipe the lens down too. My bad. I feel it will come in time now that our ground forces are using optics much more. Dave