Polarized vs Nonpolarized Sunglasses For Pilots

The Hawk Dark Ruthenium Frame Skull Temple Blue Gradient Lite Non-Polarized Lens Sunglasses OP7F402-2-NY

Airplane Cockpit Windscreens and Polarization

Most airplane cockpit windscreens are at least partially polarized from either built-in polarization or from windscreen heating elements.

When you look through a polarized windscreen the world looks normal.

But when you look at a polarized windscreen through polarized sunglasses you can get a rainbow effect, a marae pattern if you will, which makes it difficult to see through effectively, and it becomes a potential safety issue. Read more