Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun collimator

2 senses of collimator

Sense 1
collimator -- (a small telescope attached to a large telescope to use in setting the line of the larger one)
       => telescope, scope -- (a magnifier of images of distant objects)

Sense 2
collimator -- (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)
       => optical device -- (a device for producing or controlling light)