I've just finished talking to a physicist with extensive work in reflected light. He wants a pair of night driving clear polarized glasses that will stop the windshield/dashboards reflected light. To my knowledge the industry doesn't make clear polarized lenses. Anyone know why not? He believes that another crystal besides iodine could be used to create clear polarization. Can it?

I didn't search for previous threads that may have addressed this so if it's a redundant thread my apologies.