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ST947

$39.00

224 Reviews

YSLT1230

$39.00

9 Reviews

FBSMT1782

$39.00

70 Reviews

ST939

$39.00

65 Reviews

LT4126

$39.00

14 Reviews

S29500

$39.00

10 Reviews

OBMT2007

$39.00

36 Reviews

SMLT065

$39.00

14 Reviews

ShirleyT20306

$39.00

4 Reviews

ST0125

$39.00

14 Reviews

FT18903

$39.00

52 Reviews

ST0178

$39.00

7 Reviews

BSN8086M

$39.00

46 Reviews

S55712

$39.00

7 Reviews

S45715

$39.00

2 Reviews

S02271

$39.00

3 Reviews

ST0189

$39.00

10 Reviews

MT04352

$39.00

3 Reviews

DT17660

$39.00

4 Reviews

ST985

$39.00

20 Reviews

S59274

$39.00

0 Reviews

S04151

$39.00

1 Reviews

ST0165

$39.00

3 Reviews

ST1366

$39.00

30 Reviews

LT8831

$39.00

11 Reviews

FT19705

$39.00

22 Reviews

F200301

$39.00

12 Reviews

S52303

$39.00

2 Reviews

DT62343

$39.00

8 Reviews

WT95237

$39.00

23 Reviews

ST945

$39.00

9 Reviews

ST3500

$39.00

12 Reviews

ST111014

$39.00

26 Reviews

JudyT068

$39.00

0 Reviews

LT9913

$39.00

4 Reviews

TR98866

$39.00

2 Reviews

ST929

$39.00

8 Reviews

S34558

$39.00

1 Reviews

S23850

$39.00

1 Reviews

ST16734

$39.00

2 Reviews

S85435

$39.00

3 Reviews

LindsayT20310

$39.00

3 Reviews

AndrewT20312

$39.00

0 Reviews

ST0164

$39.00

4 Reviews

S00229

$39.00

2 Reviews

FT26801

$39.00

41 Reviews

S70727

$39.00

5 Reviews

JostT20301

$39.00

0 Reviews

S16924

$39.00

3 Reviews

JudyT20307

$39.00

1 Reviews

DT62240

$39.00

5 Reviews

ST11071

$39.00

1 Reviews

S57034

$39.00

5 Reviews

S38675

$39.00

1 Reviews

S84853

$39.00

0 Reviews

S61243

$39.00

2 Reviews

S61776

$39.00

5 Reviews

S98520

$39.00

0 Reviews

VickyT20303

$39.00

0 Reviews

WT95284

$39.00

11 Reviews

DISPLAYING 1 TO 60 (OF 80 )

About
What are polarized sunglasses? Polarized sunglasses are designed to reduce the glare especially from the surfaces like water, snow, and glass. It is commonly used in sports such as driving and fishing by helping the wearers in these activities to see more clearly, allowing for the avoidance of potential hazards. Since light is made up for waves traveling in different directions. Vertical light is useful to the human eye. It helps us to see. However horizontal light simply creates glare. Glare is concentrated light reflecting off a horizontal shiny surface, such as a car windscreen, sand, water, and snow or asphalt roads. It reduces visibility and can make it uncomfortable, painful and even dangerous to carry on driving, cycling, skiing or just sunbathing.

As we all know that we see by virtue of the light that enters our eyes in sunny days. Without good sunglasses, brightness and glare result in a loss of visual performance, which is produced when an object or light source in the field-of-vision is brighter than the amount of light to which the eyes are adapted. Most sunglasses will provide some absorption to dampen brightness, but only polarized sunglasses can effectively eliminate blinding glare. However, polarized sunglasses are not recommended to pilots. Polarized lenses eliminate reflected glare from a flat surface. However, looking through a laminated aircraft windscreen, while wearing polarized lenses can result in a reduced retinal image. Also, some windscreen of aircraft is already polarized, hence polarized sunglasses result in double polarization. Moreover, some 3-D movies also use polarizing lenses. Usually, one lens is horizontally polarized and the other one is vertically polarized so that each eye sees a slightly different version of the movie screen. The eyes attempt to reconcile the two images for the brain, and the result is the illusion of a three-dimensional image. Experimenters with several spare pairs of 3-D glasses lying around can play with the effects of polarization for themselves.

Since we have already know the usage of polarized sunglasses, how do I know if my sunglasses are polarized? If you have the same doubt, you can just look through the glasses at the reflection of any object on a window panel. Then, turn the sunglasses around as if they were the hands of a clock facing you. If the intensity of the reflection doesn't change with respect to what you see through the window, they are not polarized. Another way is to hold them at 90° to another pair labeled as polarized and if the lenses go dark where the lenses overlap, then your sunglasses are polarized too. If there's no change, your lenses aren't polarized. Moreover, not all polarization is equal. Because not all polarized sunglasses block glare as well as they should. A polarizing filter is no guarantee of an effective glare-blocking lens. It depends on the quality of the filter and how the lens has been produced. Cheap polarized sunglasses may only cut out 10% of reflected light, but many people don't realize there is a difference in filter quality in better-made glasses. For example, Julbo's Polycarbonate Polarized lenses cut out around 60-70% of reflected light, and the NXT Cameleon, Octopus and Polar HD lenses cut out 99% of reflected light.

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