How to see phone screen with polarized sunglasses

How to see phone screen with polarized sunglasses

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In the previous article, we discussed “Are Night Driving Glasses Safe?”. In this article, let’s talk about “How to see phone screen with polarized sunglasses”.

Many drivers have the habit of wearing sunglasses. After all, direct sunlight on the eyes not only damages the eyes, but also affects driving safety. But many drivers say that wearing sunglasses can actually make people uncomfortable, such as not being able to see the phone screen and navigation screen. Why do polarized sunglasses make phone look weird?

Polarized sunglasses may make it easier and more comfortable to see things outdoors, but wearing them when trying to see an LCD screen can sometimes leave your eyes in the dark.

Most LCDs (such as your smartphones and tablets) use polarizing filters to help you see the screen clearly in bright sunlight. But the same is true for polarized sunglasses, which means that the two essentially cancel each other out, causing your LCD screen to look dark or completely black when you look at it.

What are polarized sunglasses?

Polarized lenses are lenses that only allow light in a certain polarization direction in natural light to pass through. Because of its filtering effect, things will darken when you wear it. In order to filter the sun shining on the water, land or snow in equal directions, a special vertical coating is added to the lens, which is called a polarized lens.(

The special effect of the polarized lens is to effectively eliminate and filter the scattered light in the beam, so that the light can be input to the visual image of the eye on the transmission axis of the normal track, so that the visual field is clear and natural. Similar to the principle of blinds, the light is adjusted to the same direction and enters the room, which naturally makes the scene look soft and not dazzling.

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Why can't I read the mobile phone with polarized sunglasses?

LCD screens and sunglasses often contain polarizing filters to make it easier to see clearly, especially in bright sunlight. The polarizer has the function of shielding and transmitting the incident light, allowing one type of vertical light or horizontal light to pass through and the other to be shielded. What often happens is that your polarized sunglasses only allow light to pass through vertically, thus functioning. At the same time, your phone screen will emit horizontal vibration light while blocking vertical light. Your lens and screen will eventually cancel each other out by working in opposite directions. As a result, you will end up seeing a dark or blackened image.

Therefore, due to the combined action of the polarizing lens and the polarizing plate, after wearing sunglasses with polarized lenses, the screen of the mobile phone cannot be seen. In fact, these two things have the function of filtering the direction of light, so when they meet together and the shielding and transparent parts coincide with each other, you will not be able to see the phone screen.

How do I look at the phone screen when wearing polarized lenses?

The solution is simple. Rotate the tablet or phone screen 90 degrees. This technique is usually effective because it locates the polarizing filter of the screen so that they can block light waves traveling in the same direction as polarized sunglasses and let light pass through.

Newer smartphones and computer screens have found a solution to this problem, but when you wear polarized sunglasses with an older model screen, you may still notice that the screen is dark.

In some cases, you may need to view the LCD on a dashboard that cannot be rotated. This may be true for crew members and pilots who must be able to read instruments quickly and accurately to ensure their safety. Therefore, in these situations, you should avoid wearing polarized sunglasses.

Polarized lenses can also interfere with your ability to view and read displays on air pumps and ATMs. In order to see more clearly when filling up the gas tank or withdrawing money, please remove your sunglasses when performing these tasks.

Thank you for your time in reading our passage “How to see phone screen with polarized sunglasses”. For more information about sunglasses and eyeglasses, please continue to follow Also, it is welcome to share and forward to Facebook and Twitter.


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