Demonstration of the Functional Principle of a Dot Projector

The dot projector stands as a crucial element powering nowadays face recognition technologies (like Face ID). Typically, this system comprises an array of light-emitting units, lenses, and beam-splitting gratings. Working in conjunction, the lens system and gratings project and replicate the array source pattern multiple times. In this instance, we construct a dot projector system of this kind to showcase its operational principle. With VirtualLab Fusion, we perform both ray and field tracing for the system analysis.