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A device capable of collimating radiation, as a long narrow tube in which strongly absorbing or reflecting walls permit only radiation traveling parallel to the tube axis to traverse the entire length.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


1. (General Physics) a small telescope attached to a larger optical instrument as an aid in fixing its line of sight
2. (General Physics) an optical system of lenses and slits producing a nondivergent beam of light, usually for use in spectroscopes
3. (General Physics) any device for limiting the size and angle of spread of a beam of radiation or particles
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˈkɒl əˌmeɪ tər)

1. a fixed telescope for use in collimating other instruments.
2. an optical system that transmits parallel rays of light.
3. a device for producing a particle beam in which all the particle paths are parallel.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.collimator - a small telescope attached to a large telescope to use in setting the line of the larger onecollimator - a small telescope attached to a large telescope to use in setting the line of the larger one
telescope, scope - a magnifier of images of distant objects
2.collimator - 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
optical device - a device for producing or controlling light
prism spectroscope, spectroscope - an optical instrument for spectrographic analysis
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.


[ˈkɒlɪˌmeɪtəʳ] ncollimatore m
Collins Italian Dictionary 1st Edition © HarperCollins Publishers 1995
References in periodicals archive ?
According to the company, FluoroShield combines the power of AI, an ultra-fast collimator and the world's most advanced image processing to deliver a Region of Interest solution that has shown to reduce radiation exposure up to ~84%, helping Interventional clinicians better reach their ALARA goals.
Wide field-of-view camera parameters, such as distortion, can be accurately measured with a mirror-based collimator, for instance.
The size of the laser working spot of multi-kilowatt fibre lasers or fibre-coupled lasers can be varied easily using AdIOptica's new zoom collimator TrioFokus.
However, the intensity drop also depends on the alignment of sample and goniometer as well as the size of the collimator, receiving slit, the tilting angle Ps of a sample and the Bragg angle th of diffraction.
IF YOU OWN A Newtonian telescope, you need a collimator. It can be as simple as a focuser plug with a hole in the center, or as complex as a combination Cheshire sight tube with crosshairs and an angled reflecting plate.
7 demonstrates the results of histogram comparison in the synchronous measurements of [sup.90]Sr [beta]-radioactivity in Novosibirsk and [sup.239]Pu [alpha]-radioactivity in Pushchino in 3 variants of experimental setup: with the collimator aimed at the Polar star (no.
The targeted operating temperature is 130[degrees]C due to the operational temperature limitation of the commercial optical fiber collimator. The fiber optic accelerometer that can endure 130[degrees] C was fabricated using mostly the following materials: invar, ceramic adhesive, and 130[degrees] C endurable collimated optical fiber for dimensional stability in high temperature environments.
Some studies show the [[mu]] dependence on factors such as sample thickness and the size of the collimator utilized.
The source S, of strength 200 mCi of [sup.241]Am in the form of a steel-welded capsule, was located in a lead collimator C.
This study was designed to optimize the imaging parameters, including the energy window and collimator type for BS imaging.