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by DoctorOetker
26 days ago
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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). |
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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)