wrote:

I have prescription, bi-focal, polarized sunglasses. I don't recall
ever having a problem with any display I've looked at. None, Nada,
Zilch. My optomitrist long ago advised me to bring them whenever
buying anything with a polarized display screen, just in case, and I
have NEVER seen a display in a store, on a boat or anywhere else that
was a problem.


Assuming that all LCD displays are polarized, if you take your glasses
and rotate them 90 degrees, the screen should be affected. If that does
not happen you either don't have polarized glasses or your glasses have
some other kind of polarizing or something.

Maybe you need to check the baloney factor on your optometrist?

Jack

--
Jack Erbes in Ellsworth, Maine, USA - jacker at midmaine dot com

Larry wrote:

I have a Garmin 168 which I just replaced with a Garmin 188. The old one
is about 1 year old and is available for sale with mapping software and a
computer cable. It works perfectly. snip

Hi Larry,

This is off the newsgroup.

I'm using a Garmin 160 on my seasonal/occasional 14' fishing boat and
would be interested in your 168. Tell me how you want for the 168.

If you use PayPal, I can pay you with that or I can send you a money
order if your prefer.

Thanks,

Jack

--
Jack Erbes in Ellsworth, Maine, USA - jacker at midmaine dot com

Larry wrote:

I have a Garmin 168 which I just replaced with a Garmin 188. The old one
is about 1 year old and is available for sale with mapping software and a
computer cable. It works perfectly. snip

Hi Larry,

This is off the newsgroup.

I'm using a Garmin 160 on my seasonal/occasional 14' fishing boat and
would be interested in your 168. Tell me how you want for the 168.

If you use PayPal, I can pay you with that or I can send you a money
order if your prefer.

Thanks,

Jack

--
Jack Erbes in Ellsworth, Maine, USA - jacker at midmaine dot com

I have also witnessed this problem with Furuno models that have a snap in
glare filter over the screen. One tugboat company was a little upset about
this and removed the filters from all their radars once we figured out the
problem.
Also "el cheapo" sunglasses can be of various polarities I find. I had one
pair that I had to discard when flying small aircraft and the curved
Plexiglas windscreen showed all the heat stress lines from forming the
curves in color when using those polarized glasses. Higher quality aviation
polarized sunglasses did not have the problem.

Doug K7ABX


"Jack Erbes" wrote in message
...
wrote:

Hi Jack,

Yes, that is the case. However, I think it is your glasses and the
viewsonic
monitor that are out of step with the standard practice. I have a Furuno
radar
and a Garmin GPS, and a handful of other LCD devices and never see the
problem
that you are having. snip

No, the Viewsonic monitor is fine with the glasses. Unless I have
fallen out of my chair and am laying on my side.

The Furuno was fine unless I was standing in front of it normally
oriented and holding my head erect. So I now assume that particular
Furuno was vertically polarized.

And there is no doubt about the issue with that particular Furuno, I was
on that boat 3 weeks and saw the problem every time I looked at the
display with my sunglasses on.

Jack

--
Jack Erbes in Ellsworth, Maine, USA - jacker at midmaine dot com

On Thu, 21 Oct 2004 21:24:00 GMT, "Doug"
wrote:
I had one
pair that I had to discard when flying small aircraft and the curved
Plexiglas windscreen showed all the heat stress lines from forming the
curves in color when using those polarized glasses. Higher quality aviation
polarized sunglasses did not have the problem.
======================

Interesting issue. I've always taken the ability to see stress
paterns as a sign of quality in a polarized lens but I can see where
it would be a problem as you describe.