. Whether people love it or hate it, or most commonly just don’t want to spend $3,500 on it, nearly everyone agrees that Apple pulled off some amazing technical achievements with the headset.
One of the most impressive parts of the Vision Pro is its eye-tracking system. The high-performance eye-tracking system relies on sophisticated and tinyinside the eyepieces that project invisible light patterns onto each of the wearer’s eyes.
The Apple Vision Pro also has infrared illuminators on the front of the headset, which provide vital data about the user’s surroundings. On the inside, there appear to be at least eight infrared illuminators per eye, for a total of 16 or more. With the three on the front, the total number of infrared lights on the Vision Pro is just under 20.
Apple famously plays its cards close to the chest. However, it does explain that the Vision Pro has two high-resolution main cameras, six world-facing tracking cameras , and four eye-tracking cameras on the inside of the headset. These four internal cameras capture and track the infrared light projected by the 16 IR illuminators.
Apple is no stranger to infrared light and sensors. The company uses an infrared sensor with its FaceID technology, which unlocks many iPhone and iPad devices. Apple devices also use an infrared sensor to measure ambient light and adjust screen brightness. Further, LiDAR technology, like that used for low-light autofocus and depth measurements, relies on infrared wavelengths.
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