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more about collimator
collimator |
2 definitions found From Webster's Revised Unabridged Dictionary (1913) [web1913]: Collimator \Col"li*ma`tor\, n. 1. (Astron.) A telescope arranged and used to determine errors of collimation, both vertical and horizontal. --Nichol. 2. (Optics) A tube having a convex lens at one end and at the other a small opening or slit which is at the principal focus of the lens, used for producing a beam of parallel rays; also a lens so used From WordNet r 1.6 [wn]: collimator n 1: a small telescope attached to a large telescope to use in setting the line of the larger one 2: 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
more about collimator
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