Like the ones fishermen wear. Polaroid is actually a brand, polarised is actually the correct name I suppose. A bit like Kleenex being synonymis with tissues. Any brand name and many crappy sunglasses are polarised and the effect is to reduce glare and increase contrast.
Like the ones fishermen wear. Polaroid is actually a brand, polarised is actually the correct name I suppose. A bit like Kleenex being synonymis with tissues. Any brand name and many crappy sunglasses are polarised and the effect is to reduce glare and increase contrast.
http://www.allaboutvision.com/sunglasses/polarized.htm