An idea of Volumetric Display by changing the optical path with two spinning mirrors
The location of the rotating 45° mirror 10 is fixed. The vertical mirror 9(can also be replaced with a led screen) is doing the circular motion, always facing the 45° mirror with the same angular velocity. When watching from the top, the optical path from transparent screen 11 to eye is periodically changed.
version 2.0 demo hardware with one mirror and three surrouding led screens
showing a half pyramid
hackaday: https://hackaday.io/project/194714-volumetric-display-using-rotating-mirror
Video: https://youtube.com/shorts/WtBLADxNRh4
Video: https://www.youtube.com/shorts/ZilCZabeLMg (debuging with single mirror and led)
Video: https://www.youtube.com/shorts/ft3zD9OViyE (debuging with two mirrors and led)
Video: https://www.youtube.com/shorts/52YA3tK1XmA (debuging with single mirror and led, showing a volumetric Aescartes Heart Curve.)
Video: https://www.youtube.com/shorts/yh6b7pyUaBM (debuging with high speed camera)
Video: https://www.youtube.com/shorts/uKBhVhGyDE0 (debuging with one mirror and three surrouding led screens)
Video: https://www.youtube.com/shorts/99Vo0eT40mk (showing a half pyramid)