Heise.de published a description for an open source holographic microscope which can generate 3d views.

This said, mine doesn‘t work, and the guys behind it aren‘t really helpful or friendly. Physicists, what can I say?

Sunk 300€ into it, misses some crucial information on calibration and useage according to me. However, others seem to have gotten it to work, so maybe I am not the brightest candle on the cake…

https://github.com/holmos-ipm/

https://www.heise.de/ratgeber/Holographie-Mikroskop-mit-Rasp... (paywalled)