Our system builds on recent ideas that use artificial intelligence techniques to improve the image quality and accelerate the computation of computer-generated holograms (CGH) (e.g., ).

We propose a holographic near-eye display system that offers 2D or 3D image presentation to each eye with a device thickness of just a few millimeters. But just as Apple uses computational photography to offer features like Portrait Mode for photos and Cinema Mode for videos, researchers say they could do the same to fix the image quality. Holographic images come with their own image-quality problems, though. The depth of the prototype is just 2.5mm thick. This not-to-scale diagram gives an indication of how this reduces the depth required. Nvidia and Stanford researchers propose a different solution: holographic images. But pancake lenses donвЂ™t offer the type of image quality required for extreme close-up use like AR and VR, and вЂ“ crucially вЂ“ they cannot generate 3D images. One solution to this is a вЂњpancake lensвЂќ вЂ“ a very flat lens design used in military headsets like night vision goggles. This design necessitates a relatively large distance between microdisplay and lens, making todayвЂ™s VR displays bulky and uncomfortable to wear. This problem stems from the magnifier principle of VR display optics, in which a lens enlarges the image of a small microdisplay.

This, as the researchers note, requires bulky headset designs.ДЄ major barrier to widespread adoption of VR technol- ogy, however, is the bulky form factor of existing VR displays and the discomfort associated with that. With a conventional virtual reality headset, you have a relatively small display, which you want to fill the view of the person wearing it, so that requires enough distance between display and eye-piece for the necessary magnification. One of the key challenges facing any true glasses-like AR device is the physics of display optics вЂ¦ A joint research paper by Nvidia and Stanford University describes a technology that could be key to the difference between the bulky Apple VR headset weвЂ™re expecting to see in late 2022/early 2023 and the type of thin Apple Glasses likely to launch several years later.

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