Traditional eye trackers do not use polarized light, which limits their capabilities.

For example, the process may involve random reflections from the eyelashes and eyelids, making it difficult to accurately recognize the iris and track eye movements. Apple recommends using polarized infrared light to enhance these capabilities.

The submitted patent states that the Vision Pro helmet includes an eye camera system consisting of one or more infrared cameras that can capture images of the user’s eyes.

These images are then processed to perform functions such as iris recognition and eye tracking.

The system also has at least one light polarization element that improves the performance of the device by improving the light path used to capture images of the user’s eyes or other facial features.

Source: Ferra

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