This. Not just the sun, but more annoyingly, opposing headlights in the night. Technologies to avoid blinding opposing drivers are not adequate. We could do with technology to assist those who are on the affected side.
Transparent material that becomes opaque to bright light (something like gamma < 1, gain < 1) in the direction of the light. So each point of the material is transparent or opaque depending on the viewing angle and respective directed light flow through it.
Transparent material that becomes opaque to bright light (something like gamma < 1, gain < 1) in the direction of the light. So each point of the material is transparent or opaque depending on the viewing angle and respective directed light flow through it.
I think such a material could be engineered.