Analysis of information sources in references of the Wikipedia article "Face ID" in English language version.
vertical-cavity surface-emitting lasers (VCSELs) power some of Apple's most popular new features, including Face ID
To provide the 30,000 dots, the VCSEL supplies the IR light and the Folded Optic directs the IR light to the Active Diffractive Optical Element (DOE). Finally, the Active DOE divides the light beam into 30,000 dots of light.