It has nothing to do with an individuals eyes. It has everything to do with the polarized sun glass lenses and polarization or lack of polarization of the GPS and LCD screens.

 

Oh, for sure, the sun in the desert is so intense. With humidity in the single digits there is never any cloud cover of any type, just retina burning blinding glare. There are times it's so bright that I use a tinted shield and my Ray Bans and it's still bad.

 

Its not the clear coating, it's how the polarizing coating on the glasses changes the light wave lengths that your eyes see. With a curved plastic windshield you'll see rainbows, if you look at the factory tinted glass in your car you may see spots instead of a rainbow. It's all about how the polarized glasses work in changing the light your eyes see.

http://www.allaboutvision.com/sunglasses/polarized.htm

 

Exactly but I wasn't going to argue the point.

 

Just for the sake of discussion.....If rainbowing is visible on a hard coated curved polycarbonate shield and not visible on an identically curved acrylic non coated shield doesn't that support the explanation that it is the hard coating that produces a rainbow affect?

I'm not the guy that's going to argue with James from LRS. All of the info he has provided me has been spot on.

 

I only ride with polarized glasses and never have this problem. Even when I look through my recurve, which I try never to do. I try to look above the windshield. But still, I've never noticed this problem.

 

That's why most do not wear polarized lenses.

 

It used to be that the way polarization worked was the film was applied in parallel lines. So depending on which way you look at it dictates how much you can see through it. We use polarized film on our computer monitors to keep nosey Nancy from reading what we are working on. Furthermore, if you take two pieces of film and turn one of them 90 degrees and put them together. You should not be able to see through them.

 

I have to pull mine off to read the gas pump numbers. I like the way they cut tons of glare out.
kroozeabout.