. . . . . . . . . . . "103070587"^^ . . . "102471693"@en-us . . . "0"^^ . . . . . . . . . . . . . . . "03070587-n"^^ . "collimator"^^ . . "collimator"@en-us . "102959727"@en-us . . . . . . "0"^^ . "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"@en-us . . . . "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"@en-us .