COLLIMATOR


Meaning of COLLIMATOR in English

ˈ ̷ ̷ ̷ ̷ˌmād.ə(r) noun

( -s )

1. : a device for producing a beam of parallel rays of light or other radiation or for forming an infinitely distant virtual image that can be viewed without parallax usually consisting of a tube having an objective lens at the end toward the observer and a slit or cross hairs in the objective focal plane at the other end — see spectrometer illustration

2. : a device for obtaining a beam of molecules, atoms, or nuclear particles of limited cross section and moving in parallel lines

Webster's New International English Dictionary.      Новый международный словарь английского языка Webster.