Re: Polarized sun glasses

jobst.brandt@xxxxxxxxxxxxxxxxxx wrote:
Nate Nagel wrote:


Okay I'm officially confused. I always read about how great
polarized glasses are for riding and driving. And back in my
driving days, I had a set of polarized ray-bans that would stay in
the car.


Now I decided to upgrade my Rudy Project cycling sunglasses. I
bit the bullet, and paid far too much money for a pair of their
polarized lenses. The lenses just arrived, and they have a "not
suitable for driving or road use" warning sticker on them. Anyone
have any idea why?


I wrote to them asking this same question, but while I wait for
their official response, I wanted to see if anyone else had this
problem.


Polarized lenses help over water, fishing etc.


I'm sold on them for driving, haven't tried them riding yet. I have
a set of green-tinted polarized prescription Ray-Bans and I love
them to pieces. The one drawback I've found is that they produce
very strange interference patterns when looking out through car
windows with aftermarket tint film, but none of my personal vehicles
are so equipped so this is a non-issue for me.


Try looking at old VW or other tempered glass windshields. The stress
in such glass causes all angles of polarization and these interfere
with sight with Polaroid glasses. Also, the stress patterns are
strikingly visible with such glasses.

I don't know if tempered glass has ever been acceptable for windshields here in the US, at least for vehicle years likely to be found still on the road. My '49 Chevy had laminated glass as well as my '55 Studebaker, and while I actually know of another '49 Chevy nearby with regular license plates on it no less, that's probably getting close to the upper limit for age of a vehicle as viable transportation. In fact, back when those cars were built, laminated glass was required on *all* windows, and it was only later that tempered glass was allowed for side and rear windows. AFAIK, laminated ("safety") glass is still required on windshields.

nate

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