This 3D display generates a light field by scanning a modified Nipkow Drum in front of a very high refresh rate screen. 00:00 Capturing a light field 00:33 Projecting a light field 01:43 Assembly 04:34 Diffusers 05:37 Spin up 06:49 Slow mo cutaway view 07:30 Results 07:46 Fin 08:45 Doom, obviously The outer drum operates the same way as a mechanical TV, with a helical arrangement of holes performing a raster scan of the inner light source. However, instead of a single diffuse light source, the inner screens project a full 2D image per hole, synchronised with the rotation and updated 512 times per frame. This means the light from each hole is view dependent, and both eyes see a perspective correct view of the scene regardless of how many people are looking or where they are in space. It's surprisingly difficult to capture the effect on video. In the room, the stereo effect is extremely solid, and the perspective works for both large head movements and subtle shifts, resulting in an image that's very solidly locked in space. On video the coarse pixel grid dominates, and it tends to read as a low resolution 2D image. The 3D effect comes at a cost. The resolution as seen by one eye at one instant is around 100x48, but to achieve that it's generating more than 5 million rays per frame (effectively 3K resolution), most of which head off into empty space. As a mechanically scanned display, the vertical resolution is limited by the number of holes in the drum, and the horizontal resolution is limited by the refresh rate of the backing panels. I use these LED panels because they can be driven very fast - the front 3 panels, 32x64 pixels each, update at 22500 fps in 1 bit colour. At 3 bpc it's 7500 fps, and in wraparound mode with 5 panels active it's further halved. These models are licensed under Creative Commons Attribution: 07:30 "Rampaging T- Rex" (https://skfb.ly/oERzr) by Naelwow 07:46 "Abyssal Angler Fish 3d Model Free" (https://skfb.ly/pJZGE) by iRahulRajput 07:57 "Mantis Shrimp" (https://skfb.ly/otVwn) by AIUM2 08:24 "Slimer" (https://skfb.ly/oRHYH) by marcoseec If you enjoy my creations, please consider supporting me at https://ko-fi.com/ancientjames