How to Tell if Sunglasses Are Polarized

January 29, 2010 by  
Filed under Technology

polarized sunglassesPolarized sunglasses have become increasingly common in the last five years as more fisherman and others who enjoy water sports have realized how dramatically the polarized glasses can reduce glare from the sun, especially on the water. The polarized glasses have special filters that block the horizontal polarized rays of the sun that reflect off the water. This lets you see down into the water rather than being faced with a glare. Popular on the water and for driving, polarized glasses can increase visibility significantly.


Check for Polarized Lenses

To tell if you have Polaroid sunglasses, you’ll need to check the orientation of the lens. Hold the glasses out away from you and look at an angle at a surface with a glare. Then slowly turn the glasses from flat to on their side. If the way the image looks through the glasses changes, they are polarized. Polarized glasses break up horizontal rays, by turning the glasses sideways, the lens are no longer breaking up the light and the difference is easy to see – the glare returns.

Using Polarized Lenses

Polarized lenses are useful for increasing visibility in certain light conditions. Polarized light such as the reflection on the water, the glare off cars on the road and even glare from wet conditions on the road can be greatly affected by the lens. Glare from other circumstances such as bright snow is not polarized light and won’t be affected as much by the lens.


Easy Step By Step Instructions for Finding Polarized Sunglasses
  • Hold the sunglasses out away from you so that you can look through them at different angles
  • Watch through the glasses as you turn the lenses about 90 degrees
  • If the image changes and becomes less clear, the sunglasses are polarized
Warnings, Advice, and Suggestions When Determining if Your Glasses are Polarized

Polarized glasses are great for fishing because with the glare on the water reduced, you can actually look into the water at shallow depths and see rocks, fish and other underwater activity.

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