Polarized Sunglasses Simple Identification Method - OOLVS

Polarized Sunglasses Simple Identification Method - OOLVS

1. Simple method: stack two polarized lenses vertically, and the lens will appear opaque.
Reason: The polarizer lens is specially designed to allow only parallel light to pass through the lens, and most of the light is blocked when the two lenses are stacked vertically. When you buy, as long as such a simple operation, you can immediately know the authenticity and good or bad of the product.

2, Using the LCD screen: the glasses face the screen horizontally, then the lens does not change, then turn the glasses clockwise up to 45 ° angle, see the color of the lens becomes darker, then turn back to normal, this is polarized light The lens, if it doesn't change anyway, is not a polarizer.

3. Use the mobile phone to identify polarized sunglasses: Just point the glasses horizontally on the screen of the mobile phone. At this time, the lens does not change. Then, when the glasses are turned clockwise up to a 45° angle, the color of the lens becomes darker, and then the rotation returns to normal. This is the polarized lens. If there is no change regardless of the rotation, then the pair of glasses is not a polarizer. It is worth noting that polarizers with special functions are not obvious when testing polarized light, such as night driving mirrors (polarizers).

The practical mobile phone screen is similar to the LCD screen because polarized sunglasses are manufactured according to the polarization principle of light, which effectively eliminates and filters out the scattered light in the beam, so that the light can be put into the visual image of the eye on the track of the track. Make the vision clear and natural.

The light from the screen of the mobile phone is also in a special direction. When the lens of polarized sunglasses is facing the relatively bright mobile phone screen, the sunglasses will change with the angle, and the light and dark will change. That is, as the angle changes, sometimes the light of the mobile phone will pass, and sometimes the filter will be filtered. In addition to the phenomenon of flickering, ordinary sunglasses will not.

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