3 ms·

I thought it would be neat to have polarized windscreens, polarized in the opposite sense to the lights. The majority of the direct light would get cut out, cut

I thought it would be neat to have polarized windscreens, polarized in the opposite sense to the lights. The majority of the direct light would get cut out, cutting down dazzle enormously. I figured light reflected off of stuff would scramble the polarization so you could see the reflected light OK. I get that it's totally impractical to roll out because of the huge number of existing vehicles that would need modification, but it's a fun thought. I don't really know enough about polarization to know if it'd even work?

Balgair 7y ago
Polarized filters that large would be very difficult to pull off, especially on a curved windscreen. To manufacture them, they essentially make a 'concentrated' polarizer of smaller crystals and then physically pull the substrate to size. Many other ways exist, but your 3-D movie glasses are flat for a reason. Also, polarizers cut the incoming light by exactly half, so it acts as a tint, illegal in most states for the front windshield.