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Researchers discover strategy to shrink a VR headset all the way down to regular glasses measurement

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Researchers from Stanford College and Nvidia have teamed as much as assist develop VR glasses that look much more like common spectacles. Okay, they’re relatively foolish trying as a result of ribbons prolonged from both eye, however they are much, a lot flatter and compact than your traditional goggle-like digital actuality headsets as we speak. 

“A significant barrier to widespread adoption of VR expertise, nevertheless, is the cumbersome kind issue of current VR shows and the discomfort related to that,” the analysis paper revealed at Siggraph 2022 (opens in new tab) says.

These aptly named “Holographic Glasses” can ship a full-colour 3D holographic picture utilizing optics which are solely 2.5mm thick. In comparison with the normal manner a VR headset works, during which a lens magnifies a smaller show far away from it, shrinking all of the prerequisite components all the way down to such a small measurement is kind of the spectacular step ahead for VR.

The Holographic Glasses prototype makes use of pancake lenses, which is an idea that has been thrown round a few instances up to now few years. These pancake lenses not solely permit for a a lot smaller profile however reportedly they’ve just a few different advantages, too:  the decision they’ll supply is alleged to be limitless, which means you may crank up the decision for VR headsets, they usually supply a a lot wider discipline of view at as much as 200°.

Earlier prototypes for pancaked VR glasses earlier than this have managed to make use of them to cut back the hole between the lens and the display screen to a tiny fraction of as we speak’s VR headsets. Nevertheless, they might solely show 2D photographs. Not nice for as we speak’s immersive experiences. 

The Stanford and Nvidia machine hopes to construct on these earlier prototypes: delivering each 3D photographs and minimising the hole between lens and display screen even additional.

The analysis paper lists the glasses as such: “a coherent mild supply that’s coupled right into a pupil-replicating waveguide, which gives the illumination for a phase-only SLM that’s mounted on the waveguide in entrance of the consumer’s eye. This SLM creates a small picture behind the machine, which is magnified by a skinny geometric section (GP) lens.”

Simply your traditional stuff, then.

Nvidia researchers prototype VR glasses with parts labeled

(Picture credit score: Nvidia, Stanford College)

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Granted, it’s kind of of a posh topic to get your head round from the paper alone, and I’ve little question the outcomes are extra spectacular in particular person. Nevertheless, the ultimate result’s a really small VR machine that may very well be game-changing if made a actuality outdoors of the lab. It additionally solely weighs 60g, which is notably far lighter than even the Meta Quest 2 (opens in new tab), which rolls in at 503g.

Although, it’s extremely a lot a promise of what is to return greater than an instantly shippable product as we speak. There are some limitations: whereas there’s scope to have a a lot increased FOV than present era VR headsets, this specific wearable prototype solely supplied an FOV of twenty-two.8°. The benchtop prototype supplied even much less, at solely 16.1°.

“[The FOV] is way smaller than commercially obtainable VR/AR shows. Nevertheless, the FOV was primarily restricted by the dimensions of the obtainable SLM and the focal size of the GP lens, each of which may very well be improved with completely different elements,” the researchers say.

One other limitation is the doubtless requirement for a really correct measurement of the consumer’s pupil, which will not be simple with out a well-thought-out design. It will be doable to make use of an infrared gaze tracker to do that, the researchers notice, however you’d want to have the ability to monitor the wearer’s pupil measurement continually as they’ll regulate typically to completely different mild situations whereas utilizing the glasses.

You may learn up on the entire mission within the just lately revealed analysis paper titled “Holographic Glasses for Digital Actuality (opens in new tab)” by Jonghyun Kim, Manu Gopakumar, Suyeon Choi, Yifan Peng, Ward Lopes, and Gordon Wetzstein.

However there’s quite a bit that is very spectacular about even these idea VR glasses. Because the researchers state: “With an thought using the consumer’s pupil as a pure Fourier filter in addition to the Pupil-HOGD algorithm contemplating the HDOs and the pupil measurement, a real glasses-form issue holographic VR was offered for the primary time.”

Now simply to attend and see which enterprising firm places it to good use in a delivery product.

Jacob Ridley

Jacob earned his first byline writing for his personal tech weblog from his hometown in Wales in 2017. From there, he graduated to professionally breaking issues as {hardware} author at PCGamesN, the place he would later win command of the package cabinet as {hardware} editor. These days, as senior {hardware} editor at PC Gamer, he spends his days reporting on the newest developments within the expertise and gaming trade. When he is not writing about GPUs and CPUs, nevertheless, you will discover him making an attempt to get as far-off from the trendy world as doable by wild tenting.

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