 collimator |
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| 1. | [ noun ] a small telescope attached to a large telescope to use in setting the line of the larger one | |
| Related terms: | telescope collimate | |
| 2. | [ noun ] (physics,optics) 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 | |
| Related terms: | optical_device spectroscope | |
| Similar spelling: |
collimate collimation columniation |
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