Skip to definition.
Get the FREE one-click dictionary software for Windows or the iPhone/iPad and Android apps

Noun: collimator  'kó-lu,mey-tu(r)
  1. A small telescope attached to a large telescope to use in setting the line of the larger one
  2. 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

Derived forms: collimators

Type of: optical device, scope, telescope

Part of: prism spectroscope, spectroscope

Encyclopedia: Collimator