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