DICT.TW Dictionary Taiwan

 col·li·ma·tor /ˈkɑləˌmetɚ/
 瞄準儀

 col·li·ma·tor /ˈkɑləˌmetɚ/ 名詞
 平行光管,准直儀

 collimator
 視準儀

 Col·li·ma·tor n.
 1. Astron. A telescope arranged and used to determine errors of collimation, both vertical and horizontal.
 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.
 ◄ ►

 collimator
      n 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