Solid State Volumetric Display
Another volumetric display! This one does away with the wildly spinning arrays of LEDs (https://www.youtube.com/watch?v=pcAEqbYwixU ), instead using projection mapping onto a point cloud etched inside a block of glass.
00:00 Establishing the principle
01:04 Generating a point cloud
01:58 Unboxing the crystal
02:28 Stacking the positioning system
03:34 Assembling the cradle
04:27 Calibration & alignment
05:57 Showreel!
07:21 Doom, obviously
07:43 Fin
It has a resolution of around 38000 points – not anyone’s idea of HD, but enough for playable games (if you’re generous with your definitions of ‘playable’ and ‘games’).
The showreel demos all come from Multivox (https://github.com/AncientJames/multivox ), the codebase that handles my spinning displays. There’s a new device driver for the new setup, but the demo code is unchanged.
The stack of optomechanical stages was rescued from a local lab clearout some years ago. The next step for this project would be to get rid of that, build a solid mount in a nice housing, and perform the alignment in software (https://youtu.be/zz59e1wWyVc?t=258 ).
I’m not the first person to do this – a group at Columbia University built one in 2006 https://cave.cs.columbia.edu/Statics/publications/pdfs/Nayar_TR06.pdf
Source
