Polarized Instrument Display

"Robin Birch" wrote in message
...
Although I have not had the problem with instruments I have had it with
PDAs in the cockpit. Personally I don't think that polarised sunglasses
are the things to use when flying because of the possibility of seeing the
stress lines and so on in the canopy and the possibility of interference
with LCD displays. I much prefer tinted specs for this reason.

Robin

It sounds like you're stressing out . . . could this be the source of the
stress lines? (g)

bumper

Robin Birch wrote:

Although I have not had the problem with instruments I have had it with
PDAs
in the cockpit. Personally I don't think that polarised sunglasses are
the things to use when flying because of the possibility of seeing the
stress lines and so on in the canopy and the possibility of interference
with LCD
displays. I much prefer tinted specs for this reason.
I agree with your assessment that polarised glasses are not a good idea in
the cockpit. They take away glare, and it is exactly that glare that might
draw your attention to that other glider comming right at you.

André

André Somers wrote:
Robin Birch wrote:

Although I have not had the problem with instruments I have had it with
PDAs
in the cockpit. Personally I don't think that polarised sunglasses are
the things to use when flying because of the possibility of seeing the
stress lines and so on in the canopy and the possibility of interference
with LCD
displays. I much prefer tinted specs for this reason.
I agree with your assessment that polarised glasses are not a good idea in
the cockpit. They take away glare, and it is exactly that glare that might
draw your attention to that other glider comming right at you.

André

I have to agree with the previous posters. Polarized sunglasses are
intended to cut surface glare, so they are great if you are a boater.
But unless you plan to land on water, they are of little benefit to a
pilot. In addition to interfering with LCD displays, they show colored
bands in the curved plexiglass, which can be distracting.

Also, polarized glasses are usually grey, and an orange tint is much
better at cutting UV for seeing through haze and picking up detail in
clouds.

I know you wear prescription glasses, so you may want to get another
prescription pair of orange tinted non-polarized glasses for flying.
You may also prefer them for driving as well. If you spend time near
the water, the polarized pair will be better for that.

André Somers wrote:
Robin Birch wrote:

Although I have not had the problem with instruments I have had it with
PDAs
in the cockpit. Personally I don't think that polarised sunglasses are
the things to use when flying because of the possibility of seeing the
stress lines and so on in the canopy and the possibility of interference
with LCD
displays. I much prefer tinted specs for this reason.
I agree with your assessment that polarised glasses are not a good idea in
the cockpit. They take away glare, and it is exactly that glare that might
draw your attention to that other glider comming right at you.

André

There actually is a good FAA publication on Sunglasses at:

http://www.faa.gov/pilots/safety/pil...sunglasses.pdf

"POLARIZATION. Polarized lenses are not recommended
for use in the aviation environment. While useful for blocking
reflected light from horizontal surfaces such as water or
snow, polarization can reduce or eliminate the visibility of
instruments that incorporate anti-glare filters. Polarized lenses
may also interfere with visibility through an aircraft windscreen
by enhancing striations in laminated materials and mask the
sparkle of light that reflects off shiny surfaces such as another
aircraft's wing or windscreen, which can reduce the time a pilot
has to react in a "see-and-avoid" traffic situation."