[ad_1]
Smartphone screens are getting bigger and bigger, but their contents may not necessarily be visible to everyone. There magnifying glass for smartphone (or magnifying screen for mobile phones), it is just for this: to make the images on the phone very clear even to those who have poor eyesight or just want to see more conveniently photos and videos on the display.
In fact, these gadgets reproduce the same contents of the mobile phone in real time on a larger surface and do so using a simple but ingenious optical principle. Before launch headlong into the purchase of one of these products, however, it is better to understand how do they work and to whom they can actually be useful.
How a smartphone magnifier works
Also called screen amplifiers, these products are essentially similar to each other and quite simple in construction. On a base is fixed a pedestal which holds the phone in landscape orientationwhile a few centimeters away from the support point stands a rectangular plastic panel transparent, which can be folded along the base when the gadget is not in use. The panel is actually one Fresnel lensthat is a magnifying glass designed to have a minimum bulk in terms of thickness, and which can therefore take the form of a thin sheet of plastic.
The component offers aenlarged image of everything behind it, while the distance of the pedestal reserved for the smartphone is calculated to ensure that the screen is in focus by the viewer from the opposite side of the lens. The result is an enlarged projection of the images on the phone, which it assumes up to 3-4 times the original size.
Do you want to know everything about the most interesting products to buy in stores, online and beyond? Gadgetland, is the newsletter of Wired that updates you on the unmissable releases of the moment, but also on the news in terms of books, films, comics, TV series and much more.
Who needs the magnifying glass for smarpthone
Since it takes advantage of a simple principle of physics, the magnifying screen it does not need electricity to operate, nor need connection cables for secondary screens. These accessories offer enlarged images of movies, TV series and photographs, but you can also use them to navigate more easily on websites or inside the phone, as long as you keep them in landscape orientation.
On the other hand, the mobile screen magnifier is not a recommended product for everyone. The experience it offers is limited in size (the largest panels measure 14 inches diagonally) and especially in the image quality. First of all, since these are images enlarged by a lens, the resolution tends to decrease clearly showing all the pixels of the screen that acts as a source; moreover, the Fresnel lenses are divided into concentric rings, which remain quite visible in the projection of the contents.
The best magnifying screens
Knowing what you are going to buy, however, these are extremely cheap products that allow you to enjoy the contents of the phone a little better in complete relaxation, for example sitting on the sofa. without having to bring the smartphone to your eyes. There are various types on the market, from those designed to cost as little as possible to gadgets with bluetooth speakers and built-in batteries, to also amplify the sound of the phone; in October 2022 we updated our selection of the most popular products for each category.
.
[ad_2]
Source link
