Definition of light pen in English:

light pen

Line breaks: light pen


  • 1A handheld pen-like photosensitive device held to the display screen of a computer terminal for passing information to the computer.
    More example sentences
    • You may have to adjust the brightness of your monitor to get your light pen to work properly.
    • Various other light pens have been developed which include a lens for focusing the axially received light.
    • The radiated light is directed so as to be projected from a tip of the light pen as required.
  • 2A handheld light-emitting device used for reading barcodes.

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