The Problem with Magic Leap One's Display, Explained

Strap yourself in, we're going in deep.
Defining Terms
1:51 - Vergence
2:39 - Accomodation
4:45 - Lightfield Displays
Magic Leap Display
6:15 - Expectation vs Reality
8:44 - "Discretized Digital Lightfield Signal"
11:10 - Why 37 cm clipping plane?
Fact checking claims
13:39 - Causing Permanent Neurologic Deficits
14:43 - Zone of Comfort research paper
15:40 - Magic Leap is Lightfield, Hololens is not
16:24 - conclusion
Podcast: researchvr.pod...
Thank you to all who contributed their thoughts and expert opinions to helping me understand everything that I cover in this video.
Music sample: Jonah On Keys - SWARVY
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[@Arbyfilmaren]

Nice video, good attempt at explaining how it works! However, there is a factual error. You are confusing the lens of the eye with the iris. These are different things. The lens is behind the iris, and it actually changes shape to bring distant or close objects into focus. This is accommodation. The iris is changing size according to how much light is entering the eye, enabling us to see in a very large span of lighting conditions. The iris is not involved in accommodation.

[@SpaceEngines]

This. Although the description provided by the video is not completely wrong (iris size does affect focal capabilities of the eye), the eye's lens is primarily focused by stretching the eye ball in four directions (up, down, left, right) using the four muscles attached directly to the eye ball. This flattens the eye very slightly, and thus adjusts the lens' focal distance.

[@Arbyfilmaren]

@@SpaceEngines Well, you are right and wrong. The iris does affect the focal capability of the eye, when it gets small it works more like a "camera obscura", making the image sharper. That's why people with poor eyesight see better in better lighting conditions. However, the four muscles you are referring to, does not change the shape of the lens, they rotate the eye to direct the gaze. The shape of the lens is changed by the ciliary muscle, a small circular musclesphincter inside the eyeball.

[@GuillaumeDGNS]

Are lightfield and waveguide the same thing?

[@younisatwi3691]

Hey man, amazing work , i want to have your thoughts on the software you use for interiors I've tried using photo scan but it seems to pick up on unnecessary details in wide areas i might try 3DF zephyr to see if its better than photo scan

[@scubahunter00]

Great Video, suscict and informative without a bunch of overstated pompous opinions!

[@Rakesh6720]

Dig the podcast and this vid was a solid supplement to the ML 1 podcast epi. I was at the Digital Hollywood conference last week, a few days after LeapCon, and lot of the talk centered around Leap's AR future over Oculus' VR. At OC5, Michael Abrash suggested scaleable AR headsets were more than 5 years away because of glass technology. Leap defenders at Digital Hollywood suggested that was false, proven by Leap 1 and a headset by OGD. I took a ML employee to task on a panel because he seemed to be peddling what, in my opinion, has become an insidious quality of Magic Leap's promotion -- deceit. You were much kinder in your review, suggesting ML's waveguide technology is an overstatement rather than a lie. I agree with your video's concluding premise -- that experiences are all that matter to the consumer. However, I am troubled by what seems to be a pattern of obfuscation by Magic Leap going on 4 years...

[@pandadayi]

Hey Az, i am so happy i found you here on YT! I just watched a vimeo video (volumetric filmmakers NYC), where you talked about your work. i was very fascinated, cause i scanned a few things here and there over time.. but just for fun, also a construction site with a drone, witch turned out very good :) your speech there very inspired me to go out and scan even more :D thanks so much and of course i subbed you here and will binge through your videos! thanks for sharing so good information. i really appreciate it! greetings from turkey! keep up the awesome work! ;)

[@zardozx1370]

Really good explained -I understand much more of AR and hope to the next Magic Leap Version

[@pumpuppthevolume]

I expected 6 focal depths working at the same time trying to sort of approximate the light field like 24fps approximates movement.... that's what they had in some concept drawings 6 planes... I didn't expect much else.... but now I understand that getting even that with waveguides will be super problematic and will have some pretty big diminishing returns..... and most likely microled displays will be better for ar as far as picture quality and form factor and complexity.... but not sure about addressing the vergence accommodation conflict with that sort of display

[@whatdoiknow7836]

Nice job Az! I learned a few things! I agree with your assessment on the ML and am frustrated why they continually overstate and oversell what they have. So frustrating.

[@AustinBeaulier]

I have a feeling that they have other display technology that they are hiding behind the scenes because they couldnt make it small fast enough and just went with wave guides to get a dev kit out so they could actually have content when they launch a magic leap two with different display tech

[@amjiva]

I hope so. Until we're scanning the images directly onto the retina, we're still living in the old screen paradigm.

[@pumpuppthevolume]

technical drownings show 3m and 1m focal planes..... if u had something closer than 40cm it will not only be clipped but it will be pretty apparent that something is wrong because your eye will want to focus on let's say 20cm and the actual image will be at 1m focal length .....apparently from 1m to 40cm it's not that noticeable... especially if u r not focusing on a real object next to the virtual object at 40 cm.... and instead u r paying attention just to the virtual objects

[@amjiva]

As far as I'm concerned, Magic Leap hasn't delivered on their promise until they produce a consumer fiber scanning, virtual retinal display.

[@TomBielecki]

This is the review I was waiting for. Great overview!

[@Insitemobile]

Trying to create natural vision is asinine. As you look around magic leap your eyes naturally blur what you are not looking at so creating it is pointless