Share this entry
light pen Line breaks: light pen

Definition of light pen in English:


1A handheld pen-like photosensitive device held to the display screen of a computer terminal for passing information to the computer.
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.
Definition of light pen in:
Share this entry

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.

Subscribe to remove adverts and access premium resources