According to the U.S. Trademark and Patent Office (USPTO) public list, Apple recently obtained a Vision Pro headset technology patent, which can reduce motion sickness and visual fatigue.
Users of augmented, virtual and mixed reality (AR / VR / MR) experiences experience body sensations that are out of sync with the virtual experience due to differences in movement and physical positioning in the real world, causing many to experience nausea, sweating, headaches and dizziness.
In announcing the Vision Pro headset, Apple said that by combining a high-resolution display with ultra-low latency, motion sickness conditions can be significantly reduced.
Apple said it could reduce latency to as little as 12 milliseconds through a proprietary R1 chip that takes care of all the image processing.
Apple also addresses another factor that affects motion sickness in the Vision Pro patent description – a phenomenon known as visual acuity conditioning conflict (VAC).
This phenomenon is caused by the fact that when we look at a point, our eyes rotate so that the point of view falls at the appropriate place on the retina, while when we look at a near object, our eyes usually look inward, and when we look at a distant object, our visual axes diverge a bit, which creates a focusing conflict.
Apple has detailed in its patent a method for dealing with VAC to reduce visual fatigue. The patent description is very professional, and its essence is to combine the screen and camera to change the eye’s perception of the image.
The content is as follows:
The light engine consists of a series of optical waveguides with holographic or diffraction gratings that produce a beam of light by moving a light source at the appropriate angle and position, and then directing the light into additional optical waveguides with a holographic film layer recorded with a diffraction grating to extend the projector aperture and project it to the desired location of the holographic combiner.0