How to tell if the lenses are polarized

When it comes to , many people prefer to have . Polarized sunglasses offer a range of benefits, including reducing glare and enhancing visual clarity. However, it can be challenging to determine if the sunglasses you own or wish to purchase have polarized lenses. In this article, we will discuss several ways to tell if the lenses are polarized, ensuring that you make an informed decision about your eyewear.

1. Observe the Sunglasses’ Appearance:

Polarized lenses have a unique appearance compared to regular lenses. They often have a darker tint and look more uniform in color. Non-polarized lenses, on the other hand, may appear lighter and have a gradient tint. So, if you notice that the sunglasses have a darker and even tint, it is more likely that they have polarized lenses.

2. Check for a Polarization Test Sticker:

Some sunglass manufacturers place a polarization test sticker on the lenses to indicate that they are polarized. These stickers usually have a specific symbol or a text stating “polarized” or “polarization test.” Check for any such stickers on the sunglasses, as they provide a clear indication that the lenses are indeed polarized.

3. Use a Computer Screen or TV:

An interesting way to check for polarization is by holding the sunglasses in front of a computer screen or TV. Rotate the sunglasses at a 90-degree angle while observing the screen. If the screen darkens or dimples at certain angles, it confirms that the lenses are polarized. This effect occurs due to the lenses blocking the polarized light emitted by electronic screens.

4. Look for Visible Glare Reduction:

One of the main benefits of polarized lenses is their ability to reduce glare caused by reflections on surfaces like water, snow, or shiny objects. To evaluate if your sunglasses have polarized lenses, test them in environments with glare. For instance, wear them while driving on a sunny day or in front of a water body. If you notice a significant reduction in glare, it indicates that the lenses are polarized.

5. Try the “Five Fingers” Test:

Another method to detect polarization is the “Five Fingers” test. Hold your sunglasses about 12 inches away from your face and look at an object through the lenses. Then, spread your fingers wide and place them in front of your eyes, overlapping each other. Gradually tilt your fingers, creating a small gap between them. As you tilt, observe the object through the gap while looking at a reflective surface. If the object disappears or significantly fades, it means that your sunglasses have polarized lenses.

Remember that sunglasses without polarized lenses can still provide UV protection and shield your eyes from harmful rays. However, if reducing glare is your primary concern, such as for boating or fishing, it is worth considering sunglasses with polarized lenses.

In conclusion, determining whether lenses are polarized can be done using several methods. Observing the sunglasses’ appearance, looking for a polarization test sticker, and testing them in front of a computer screen or TV are all practical ways to check for polarization. Additionally, evaluating visible glare reduction or performing the “Five Fingers” test can further confirm if your lenses are polarized. By applying these techniques, you can confidently identify polarized lenses and enjoy the benefits they offer.