7/6/2026 at 7:11:49 AM
The author is missing the _hardest_ part of small hardware: power management.The reason why AR glasses are not a thing yes is because there isn't a big enough battery to allow them to function for more than a few minutes.
Glasses form factor have space for about .9watt hours now, and ~2 in 4 years time (assuming current trends) Assuming a 14 hour day, that means that your have 140mwhr to spend every hour. A not very bright light on your glasses is about 30mw, a decently bright one is 90mw. Processing imagery on that kind of budget requires custom silicon, and a huge bunch of optimisations.
by KaiserPro
7/6/2026 at 11:49:48 AM
I think one of the issues is premature optimization/minimzation(?) . All the wearables so far that feature some human interactive display are essentially cramming the mobile concept into different device classes. Take the AR glasses , they are essentially a computing unit output display , input (joystiicks/sensors) all being crammed into one unit with a powerpack to drive it all. I believe the desktop concept, or in this case 'Walkman' concept would be better fit for wearables .Where one can separate the processing from the display/output and power each separately.Having a cable from your hip pack to the headunit is not so strange/difficult as previous gen of walk/discmans can attest. However the current ruling desing is wireless everything , super slim devices and all unified with the power supply.by rzerowan
7/6/2026 at 12:02:45 PM
The idea of "pythonizing" resource-constrained environments like embedded seems feasible to me, and even a good idea if executed well (e.g., numpy, torch, jax, etc.), but it does have me cackling imagining the first encounters of modern web devs with performance/power economy constraintsby flerovium114
7/6/2026 at 12:33:36 PM
adds animationBattery life decreases by 25%
Adds telemetry to see why battery life is suffering
Battery lasts 10 minutes and the device gets hot to touch.
Thats going to be a brutal intro into embedded hardware
by KaiserPro
7/6/2026 at 12:18:09 PM
AR glasses coupled to consumer hardware should actually consume less power, since the eye box is relatively small compared to a monitor's "eye box". 99.99% of light emitted from a pixel does not enter the user's pupil for monitors.Also, I think many consumers wouldn't mind if the rims, frame arms, or frame generally (and optionally a VR mode visor) where covered photovoltaically. if the total area exceeds the area of both pupils (divided by efficiency) the environmental light could power an additive display. (with additive I mean for example pixel-wise LED's so dark doesn't consume power compared to subtractive displays which generate a uniform backlight and then block needless light).
by DoctorOetker
7/6/2026 at 12:32:00 PM
> AR glasses coupled to consumer hardware should actually consume less power,Just on that point, if we are talking about a monochrome screen that is just displaying text, that is just an IO device for a mobile phone, I can see the argument but its not really the case.
Screens _eat_ power, waveguides are really not that efficient, so need mini projectors that are overdriven to produce enough light. Current off the shelf for VGA/25 degree is 95mw for the projector only, none of the other hardware. (https://www.jb-display.com/product_des/17.html)
that gives you 4000 nits to the eye. Which is about enough for normal day to day tasks in normal light. (assuming you've cracked waveguides, and thats an active area of research)
But, thats a poor experience, as its not "world locked" as in being able to attach things to real world objects. For that you need a whole new rendering system along with a SLAM stack to know where you are, a machine perception stack to work out what you are looking at. Bear in mind that 90mw for the projector is about 2/3rds of your entire power budget. bear in mind that even Bluetooth LE is quite expensive ranging from 12-40mw for streaming something like 1mb (although through LE thats a tough ask)
by KaiserPro
7/6/2026 at 1:15:54 PM
just to be clear, I am largely disinterested in standalone glasses for the immediate future for both the precise complaints you aired as well as my lack of need for them to be standalone, I prefer the modularity of display system vs computational platform, which brings its own batteries.by DoctorOetker
7/6/2026 at 2:01:20 PM
ahh the cyberdeck interaciton model, yeah that actually looks like it could be fun.by KaiserPro
7/6/2026 at 3:17:22 PM
I don't know, it's getting better every day.The other day, I took apart an old handheld vacuum cleaner to scavenge the internals. All there was inside was a small but powerful motor, and a couple of 18650 batteries with a charge controller and a switch.
Two small batteries, running a relatively powerful vacuum, which could do spot cleans of the whole house (corners and crevices and such) without needing a recharge.
by btbuildem