Patent Watch: "StunRay" Disables with a Flash of Light

Incapacitating light beam: The suspect is going for his gun, and the police officer doesn’t want to shoot. The founders of a company called Genesis Illumination hope police officers will soon be reaching for a StunRay instead of a gun or Taser. They claim their newly patented device can render an assailant helpless with a brief flash of high-intensity light. It works by overloading the neural networks connected to the retina, saturating the target’s world in a blinding pool of white light. “It’s the inverse of blindness—the technical term is a loss of contrast sensitivity,” says Todd Eisenberg, the engineer who invented the device. “The typical response is for the person to freeze. Law enforcement can easily walk up and apprehend [the suspect].”