How does the optical system of a structured light 3D scanner work?

[SnPtL]

Hello, can anyone explain me how optical system of a structured light 3d scanner like this one works? I tried to google it, but still didn't understand how it get's Z coordinate.

 

[berkeman]

Hello, can anyone explain me how optical system of a structured light 3d scanner like this one works? I tried to google it, but still didn't understand how it get's Z coordinate.

Welcome to the PF.

That same website has more information on how to do the 3-D scans...

https://artecgroup.zendesk.com/hc/en-us/categories/201309909-Scanning