Collimator — definition

1. collimator (Noun)

2 definitions

collimator (Noun) — A small telescope attached to a large telescope to use in setting the line of the larger one.

collimator (Noun) — 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.

3 types of
optical device scope telescope
2 parts of
prism spectroscope spectroscope