I don't think so, I think it's more like sweeping an image across multiple sensors over time using the grating (probably via one of the piezo optical effects?)

I don't think so, I think it's more like sweeping an image across multiple sensors over time using the grating (probably via one of the piezo optical effects?) But I'm not familiar with your terminology, so maybe that's what you said :) Edit: Ah, they're using a DMD. The paper is published here: https://opg.optica.org/optica/fulltext.cfm?uri=optica-10-9-1223&id=538060 https://opg.optica.org/optica/fulltext.cfm?uri=optica-10-9-1.... Iiuc when the DMD mirrors are switching between on and off you can get different diffraction patterns while they're shifting, and these different diffraction orders will move the image on the camera.