collimator, n.
(collimators)
(collimators)
optical device consisting of a tube containing a convex achromatic lens at one end and a slit at the other with the slit at the focus of the lens; light rays leave the slit as a parallel beam
<noun.artifact>
collimator
a small telescope attached to a large telescope to use in setting the line of the larger one
<noun.artifact>
collimator
lexical pointers
derivationally related form
semantic pointers
hypernym