Here you can see a large holographic projector. A real use case of holographic projector at the entrance of a restaurant. A projector was used to create the image on a smoke based screen.
Short clips from following videos are used in this video.
https://www.youtube.com/watch?v=2PH_WpO0_Io
https://www.youtube.com/watch?v=3d7sQfIBAwk
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