Synonyms
1. 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.
Synonyms
- spectroscope
- prism spectroscope
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2. collimator
noun. a small telescope attached to a large telescope to use in setting the line of the larger one.
Synonyms
- scope
Example sentences of the word collimator
1. Noun, singular or mass
Ghilani and Wolf claim that a key feature of a theodolite is its collimator -- a device that narrows a beam of light.