Fig. 2From: Stereoscopic facial imaging for pain assessment using rotational offset microlens arrays based structured illuminationRotational offset microlens arrays (roMLAs) and FRCM. a Fully packaged FRCM. b The main components of the FRCM. A dot projector consists of a laser diode, a collimating lens, and a DOE. c Fabrication process of roMLAs. d SEM images of roMLAsBack to article page