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Definition of Collimator
1. Noun. A small telescope attached to a large telescope to use in setting the line of the larger one.
2. 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.
Definition of Collimator
1. n. A telescope arranged and used to determine errors of collimation, both vertical and horizontal.
Definition of Collimator
1. Noun. (physics) An optical device that generates a parallel beam of light. Often used to compensate for laser beam divergence. ¹
2. Noun. (physics) A similar device that produces a parallel beam of particles such as neutrons. ¹
3. Noun. (astronomy) A small telescope attached to a larger one, used to point it in the correct general direction ¹
¹ Source: wiktionary.com
Definition of Collimator
1. [n -S]
Medical Definition of Collimator
1. A device of high absorption coefficient material used in collimation. (05 Mar 2000)