Optical limiting

Optical limiting is a process that protects sensitive eyes or sensors from intense light, such as laser beams. When the incoming light is weak, the device allows it to pass through normally. But if the light becomes too bright, the device reacts by absorbing or scattering the excess energy, preventing the light from reaching a harmful level. Think of it like a safety valve that keeps light intensity within a safe range, ensuring protection without blocking everyday lighting conditions. This technology is used in sunglasses, sensors, and protective eyewear to prevent damage from sudden bright flashes.