Electro-optical sensor
Encyclopedia
Electro-optical sensors are electronic detectors that convert light
Light
Light or visible light is electromagnetic radiation that is visible to the human eye, and is responsible for the sense of sight. Visible light has wavelength in a range from about 380 nanometres to about 740 nm, with a frequency range of about 405 THz to 790 THz...

, or a change in light, into an electronic signal. They are used in many industrial and consumer applications, for example:
  • Lamp
    Lamp
    Lamp is a light source, while LAMP is an acronym.-Lamps:Lamp may refer to one of the following:*Oil lamp, the original use of the term*Kerosene lamp, a lamp burning liquid petroleum...

    s that turn on automatically in response to darkness
  • Position sensor
    Position sensor
    A position sensor is any device that permits position measurement. It can either be an absolute position sensor or a relative one...

    s that activate when an object interrupts a light beam
  • Flash detection, to synchronize one photographic flash to another
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