Why can't clear, untinted eyeglasses and photochromic lenses be polarized, and what would happen if a polarization filter were added to such lenses?
Why can't clear, untinted eyeglasses and photochromic lenses be polarized, and what would happen if a polarization filter were added to such lenses?
Filter would have to have some pigmentation. This has been discussed over and over on optiboards, just can't be done.
As Chip said, the polarization filter has to include dye or tint for it to work - so you cannot have a lens that is both clear and polarized.
There are lenses that are polarized and also photochromic - but even in their lightest or most faded state, they are not clear lenses. These are sunwear or outdoor lenses. And here's a new such lens that you may wish to investigate:
Younger Optics Drivewear Lenses
http://www.drivewearlens.com/drivewear/index.php
These lenses use a new Transitions-based photochromic dye that darkens even behind the windshield of a car, because the new dye responds to visible as well as ultraviolet light.
Opti-Source also makes a polar/photochromic, but it is just a regular photochromic, not like the drivewear.
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