How to Tell if Your Pair of Sunglasses is Polarized?

So you bought a new pair of sunglasses. But you’re not certain if it was really polarized. How can you tell? There are four simple ways to verify if you have a pair of polarized sunglasses.

Check the Temple Tips

The first and easiest way to check if your pair of sunglasses is polarized is to look for the label at the temple (arm) tips of your pair of sunglasses. If you have bought a pair of Sunday Shades, you will find the word “Polarized” printed on the inside of the right temple tip.

Check it Against Your LCD Computer Screens

LCD Computer screens are polarized. In simple terms, based on the positioning of the liquid crystals, light passes through and that is how images are formed on your screen. Place your pair of sunglasses horizontally against the screen. Choose a background with a bright background. At this point, you can still see the image on the screen through the lenses, albeit a little darker.

Next, rotate your pair of sunglasses 90°. If your pair of sunglasses is polarized, you will see that it darkens completely.

Check with Two Pairs of Sunglasses

Stack two pairs of polarized shades against each other. If they are stacked horizontally, you will still see light coming through the lenses. Next, rotate one pair perpendicular to the other pair of sunglasses. If it darkens completely, then you can be certain that both pairs of shades are polarized. As you can see in the image below, the left lens is completely darkened if a second polarized lens is stacked perpendicularly against it.

Two pairs of polarized Sunday Shades perpendicular to each other.


Real World Test

Now, put your pair of Sunday Shades to the test. After all, that’s what it’s for: for wearing it outdoors and thus, protecting your eyes. Find a body of water where light is reflected at an angle. The surface of the water would appear very reflective. Then, put on your pair of sunglasses. A pair of polarized sunglasses will cut the glare significantly, allowing you to see clearly what’s below the surface of the water.


 Left image, cat drawing seen at the bottom of a pail without polarized sunglasses. Right, seen with a pair polarized Sunday Shades.


Wearing a pair of polarized shades not only protects your eyes from glare, it also enhances what you see, allowing crisper and cleaner sights. Further, it can also enhance your personal safety. Often, when you are engaged in a sport activity in the sun, excessively glare might obscure your view of an obstacle. But if you are wearing a pair of polarized sunglasses, you can cut out a lot of unwanted light, thereby enhancing your view of the surrounding and allowing you extra time to react to a hazard.

You’ll be pleased to know that all Sunday Shades are polarized. Not only are Sunday Shades stylish and practical, they are extremely comfortable and designed for the Asian facial profiles. Shop for them today!