Speckle Laser Projector: The Black Tech Hidden in”Random Light Dots”
Have you ever wondered how does your phone's Face ID accurately recognizes your face, how does a robot vacuum nimbly avoids table and chair legs, how does a factory precisely detect tiny defects in parts? Behind all these applications lies a key device: the speckle laser projector. The seemingly chaotic random light spots it produces are actually "optical codes" [...]