Re: Polarizing filter
Or you could do something more complex, track the pilots gaze, put a liquid crystal filter layer over the glass and an outside camera, then track and block bright lights by darking the correct part of the window relative to the pilots gaze. A bit faffy and complex, but that would also block the sun, letting the pilot still see when looking directly into the sun.
Please may I have this for my car? I am getting fed up of oncoming lights from what I assume to be mobile stars on our roads.