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IT Home reported on July 26 that according to the list published by the United States Trademark and Patent Office (USPTO) on July 25, Apple has obtained a patent related to folding screens.Can be used for folding iPhone, iPad and Mac products in the future。

Apple's patent is titled "Electric device with optical angle sensor" and focuses on improving the angle sensor in folding devices, allowing the system to flexibly adjust the UI according to the device status.

Apple said that there are many challenges in designing angle sensors for foldable electronic devices. Traditional angle sensors usually use magnetic angle sensors, which are easily affected by the magnetic field of static magnets. Apple explored a better solution in the patent.

IT Home translated part of Apple's patent summary as follows:

The electronic device involved in this patent includes a first screen part and a second screen part, which can rotate relative to each other around a hinge. Angle sensor: detects the current rotation angle of the hinge; Transmitter: can emit light to the hinge angle encoder; Sensor chip: can receive light reflected back from the hinge angle encoder. The hinge angle encoder may include an absorption polarization filter layer and a reflection diffusion layer. A pixelated polarizer can be overlapped on the photodetector array in the sensor chip. The electronic device may include a processing circuit configured to calculate the hinge angle of the rotation of the first and second housing parts based on one or more intensity values ​​obtained using the photodetector array.