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How Do Under-Display Smartphone Cameras Work – Guide
The only problem was the need for a selfie camera. Inevitably, this needs to be placed somewhere, and we’ve seen a number of inventive methods aimed at hiding it, making it less of an obstacle, or at least reducing its visual impact. There was pop-up camera mechanisms, tiny dewdrop notches, clamshell cameras, and pinhole cameras that were placed on the face of phones. But there is a new technology that aims to hide it completely: the sub-display camera. Also known as USC (Under Screen Camera) or UPC (Under Panel Camera). If you’re wondering why they can’t do what they do with optical fingerprint sensors and just create a transparent part of the main screen, it’s because standard OLED panels still can’t let enough light through to the other side to create it’s a decent color image.
And if they used that screen as an entire panel, it would have dire consequences for the fidelity of the image on the screen. Although the objective final is certainly to implement it in a way that makes it completely invisible, the first iterations failed. It’s almost invisible on darker days, but once you illuminate the area of the screen that’s obscuring the camera, you can clearly see the area that lets light through.
Technology under the screen
However, as phones Moving to thinner bezels and larger screens, companies are experimenting with ways to minimize camera presence. One of the most recent techniques is to place the camera under the viewfinder. It’s similar to scanning your screen fingerprints, which is a common way to unlock your phone today.
At the time of writing this article, we have recently seen an influx of new smartphones with under-display front cameras. The most famous of these devices is the Galaxy Z Fold 3 – Samsung’s latest entry in its high-end line of foldables. phones. It has a 4-megapixel sensor hidden under its large, foldable screen. Other companies like Xiaomi, ZTE and Vivo have also equipped their devices with cameras under the screen.
How do cameras see you?
The main thing you might be wondering is how cameras produce an image considering they are behind part of the screen. How it works is that the part of the screen on top of the camera it’s transparent. These devices essentially feature a display-in-a-display. The main screen is usually OLED or LED technology, while the small cutout uses a different type of glass that allows the camera below to capture the light. even when the camera is off, these “holes” may still be clearly visible in normal use. It is often described as a “blurred dot” on the screen and may be noticeable when viewing content in full screen or while playing games.
However, companies are taking steps to make them less obvious to the eye. The brighter the screen is set, the less noticeable the hole is usually. Also, the display layers above the cameras make it quite difficult to capture a sharp image. Owners of these phones often find photos they take with under-screen cameras blurry, blurry or of low quality. While companies are trying to improve the quality of photos through image processing, they are still far from achieving a quality similar to the selfie cameras we now have in our phones.
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