As per the patent, Samsung's advanced stylus will also include a battery and a prism in the optical path for conversion of signals. Also, it is not clear if the Galaxy Note that will be using this stylus will be ditching the selfie camera or not. Samsung explains in the patent that smartphones typically employ digital zoom, but in the process of enlarging an image via a program or algorithm, the overall quality of the images takes a hit.
There are quite a few reasons as to why an S Pen with a camera is probably not happening.
The patent, spotted by Patently Mobile (via Android Police), reveals an S-Pen with a camera in the top section.More news: U.S. thanks Vietnam for hosting summit with N.Korea
More news: Kyler Murray brings intrigue to NFL Scouting Combine
More news: Virginia House Dems Seek More Time on Resignation Demands
Still, a built-in camera and optical zoom could spark a new life into the Samsung S Pen stylus by extending its capability through new use cases.
The camera could potentially allow Samsung to make a full-screen display without a selfie camera. The South Korean giant reinvented the S Pen for the Galaxy Note 9, where it added Bluetooth functionality. Still an S Pen with a camera and zoom will definitely be interesting. We are in the eighth generation with the Galaxy Note 9 - remember, Samsung skipped the Galaxy Note 6 ... However, since the S Pen only comes with the Galaxy Note handsets, it was assumed by many that this feature could come in a future Galaxy Note flagship.
Another possibility is that the stylus camera could be used for productivity tasks, such as optical text recognition.
In short, we don't know what Samsung's got planned, but we do know the stylus-cam is intended for a Galaxy Note phone specifically. For instance, users can hold down the button on the S Pen to open the camera app, tap the button once to take a photo or double tap to switch between the front or rear camera.