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This community is a place to share and discuss new scientific research. Read about the latest advances in astronomy, biology, medicine, physics, social science, and more. Find and submit new publications and popular science coverage of current research.

Updated: 2018-03-20T14:17:47+00:00


Hi! I’m Bernard Kress, Partner Optical Architect at Microsoft/Hololens. I’m working on developing next generation AR experiences through the introduction of novel optical technologies and architectures. Ask me anything!


Immersive modes, such as Augmented Reality and Mixed Reality headsets, have the power to revolutionize how we work, play, teach, learn and shop. Enterprise already offers solutions for specific AR tasks in engineering, manufacturing, design, health care, architecture, retail and gaming; return on investment is mainly cost avoidance (shorter learning cycles, less errors, better communication, productivity and yields, etc.).

However, most actors involved in developing the AR ecosystem (from hardware to app development platform to apps and content) agree that it will take a long time for hardware to hit the consumer level comfort required for mass adoption (5 to 10 years).

Some of the hardware issues to solve, specifically from an optical engineering point of view, are:

• Higher FOV and higher resolution through active foveation

• Vergence Accommodation Conflict (VAC) mitigation through varifocal, multifocal, light field or true holographic display

• Pixel occlusion for HDR for more “realistic” holograms

• Higher brightness over a decent eye box for external usage (lower power, higher brightness / contrast displays and high efficient optics)

• More accurate, less power, more compact IR and visible sensors (sensor hardware fusion: Head tracking, eye tracking, gesture tracking, 3D scanning, multispectral)

There are many other challenges for the ultimate consumer AR experience (such as overall CG, size and weight, battery life, head dissipation, 5G connectivity for cloud rendering, etc…) which we will not discuss today.

If you would like more information outside of this AMA, I will be at SPIE Photonics Europe in Strasbourg, France next month for the Digital Optics for Immersive Displays conference. You can also take my free course “An Introduction to VR, AR, MR and Smart Eyewear: Market Expectations, Hardware Requirements and Investment Patterns” on the SPIE Digital Library. It was recorded live at SPIE Photonics West in January. Enjoy!

submitted by /u/Bernard_Kress
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/u/masta on $200 off Pixel 2 XL + extra wall charger free


I got my 6p from Amazon summer sale a few days after having bought from google full price, and I believe it was ridiculously cheap. Like half. I'll just wait for that to happen again.

/u/masta on Age doesn't define swagger


I think the definition of swagger is the issue

/u/masta on How do I clean my system?


We have a tendency to break out dependencies to the extreme, and sub-divide them for isolation.

/u/masta on The ultimate trick question on Who Wants to be a Millionaire.


Ahahaha... it was so obvious!

The first question is always so obvious, how could this happen?

/u/masta on Gore warning: Careful out there brothers. Air hammers are no joke.


I reported this for lack of NSFW.

As the top mod of /r/WTF I know the NSFW topic very well. Tag the post properly or else it might be banned. Hey /u/datums you have to do something here! For everyone else, for fucks sake down vote to oblivion.

/u/masta on Can we talk about how fucked Windows Update still is?


Hey gang,

Side question: How does Red Hat compare for platform updates (rhel)? Is there anything that could improve?

/u/masta on Is it possible to install GNOME 3.28 on Fedora 27?


Great suggestion. Rawhide is nice.

/u/masta on Purchased house and looking for network ideas for fiber.


The single story will make things much easier.

Before you get ahead of yourself dreaming of networking, you will need to dream of tools. Go out and purchase a nice drill, something that can bore a 3/4 inch hole through 2x4 wood. You will need a flashlight, preferably the kind you could attach to your head. Wire snake is essential, and depending on the age of your home you may also needs a flexible drill bit extension... to get down (or up) the wall to penetrate the fire-breaks.

All this assumes you want to run Ethernet through your home, which I would highly recommend.

/u/masta on Bill O'Reilly when he did movie reviews for WFAA in 1976


Yeah, he comes across like an asshole way back then, too.

/u/masta on Best graphics card for Fedora


Noted, thx

/u/masta on The mosquitoes are back, RUN FOR YOUR LIVES


It's done. Thx for the reminder.

/u/masta on The mosquitoes are back, RUN FOR YOUR LIVES


Sry, haven't yet... Because mobile device. It's high on my to-do list

/u/masta on Best graphics card for Fedora



/u/masta on Best graphics card for Fedora


You are joking, right?

/u/masta on Best graphics card for Fedora



/u/masta on Being bad at something is the first step to being kinda good at something...


Some people would probably pay extra for that amount of top.

/u/masta on How can I check on the files that are backed up?


The Synology is not a suitable backup target. But it's good of you to have a hot copy near by.

The Synology runs Linux, think of it that way. It's a Linux server, so replicate you're files according to your 20 years of experience of Linux. Easy.

Rsync can emulate the hardlinks of your typical time machine setup.

/u/masta on The mosquitoes are back, RUN FOR YOUR LIVES


Thank you for raising to my attention.

/u/masta on TIL that Linus Torvalds makes more in Salary than Jim Zemlin, contrary to another post


I'll be honest, I've no idea what that term actually means, and I don't want to know. I'd like to keep it a typo, and stay oblivious. I'm only aware it exists and is deragatory. Sry, I totally missed the sarcasm for lack of the /s

/u/masta on Youtuber “Samcrac” buys salvage Domino’s DXP pizza delivery car, now threatened with legal action over fair use of leagally obtained property


Not Intentional for sale? Well, they did presumably sell the vehicles to a scrap yard, or worse... They didn't, which then suggest they have zero value for their own marks.... Which are worth millions.

/u/masta on Best graphics card for Fedora


Avoid Nvidia. They make great products, but for myself I'll never buy them again.

A few remarks.

Not the most open source friendly when compared to AMD. This is all about mainline kernel support, and the surrounding tools like Mesa. AMD is the clear winner in terms of open source. But mainline kernel support isn't everything, and the freetards that complain about binary blobs are deluded... Because a computer these days probably won't boot without some kind of firmware blob. Anyways, the blob is just a translation layer that sits between a kernel interface, and thre hardware, it makes driver development easier for Nvidia. AMD is on record for wanting to do the same thing, sorta... just Google AMD Linux hal driver.

AMD performance is good enough, but perhaps right now not as great as Nvidia. That is for now, and given Moore's law is over, the silicon shrink wars are almost over as we head into 7 nano meter.... Quantum tunneling interference will not allow shrinking anymore. So the competitive advantage is fabrics, and memory latency. AMD seems to be ahead in those regards.

Now then, right now is a bad time to buy a gpu, thanks to crypto miners. If you can wait a while for coin market to finish crashing, it would save you some money. Might even pickup a decent card used from a miners selling off.