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There are two major elements to sun-glare.
There is vertical glare and horizontal glare; together they create a
blinding effect known as sun glare.
A polarized lens has a thin film (filter)
sandwiched in-between the lens, which filters out the horizontal
glare, hence eliminating a major factor to sun-glare. The effects of
a polarized lens are most notable when looking at water surfaces on
a bright day, driving in blinding bright conditions, reflections
from a bright day with snow filled terrain etc. By eliminating
horizontal glare the viewer is able to see more contrast and can
actually see through the waters reflective surface. Using Nupolar
and Transitions technology, Younger Optics has created the first
polarized/photochromatic lens called
Drivewear.
Polarized filters are also used to create a
3-demensional effect with some movies. By placing one horizontal
filtered lens and one vertical filter lens in an eyewear frame, the
brain attempts to bring together both viewpoints creating an
illusion of a three dimensional image.
Below are some advantages and disadvantages
regarding polarized lenses and some links to manufactures of
polarized lenses. |
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