Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun A unit of measurement of the refractive power of lenses equal to the reciprocal of the focal length measured in meters.
from The Century Dictionary.
- noun An ancient form of theodolite.
- noun The alidade or index arm of a graduated circle.
- noun An instrument used in craniometry for obtaining projections of the skull.
- noun A dioptric.
from the GNU version of the Collaborative International Dictionary of English.
- noun An optical instrument, invented by Hipparchus, for taking altitudes, leveling, etc.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun A unit of measure of the power of a lens or mirror, equal to the
reciprocal of itsfocal length in meters.Myopia is diagnosed and measured in diopters. - noun obsolete Any lens system, such as a
telescope . - noun obsolete A
theodolite or similar surveyor’s angle measuring device. - noun obsolete An
alidade . - noun obsolete A
surgical speculum . - noun obsolete An instrument for drawing the skull by projections.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun a unit of measurement of the refractive power of a lens which is equal to the reciprocal of the focal length measured in meters; used by oculists
Etymologies
from The American Heritage® Dictionary of the English Language, 4th Edition
from Wiktionary, Creative Commons Attribution/Share-Alike License
Support
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Examples
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A diopter is a unit of measurement that indicates the amount of correction needed to change your vision to be as close to 20/20 as possible.
Eyeglasses 101 2008
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The diopter is a little adjustment that you can make to how your viewfinder works - it's particularly useful for people with poor eye sight - it's usually a little wheel next to your viewfinder.
xml's Blinklist.com 2008
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The diopter is a little adjustment that you can make to how your viewfinder works - it's particularly useful for people with poor eye sight - it's usually a little wheel next to your viewfinder.
xml's Blinklist.com 2008
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The diopter is a little adjustment that you can make to how your viewfinder works - it's particularly useful for people with poor eye sight - it's usually a little wheel next to your viewfinder.
xml's Blinklist.com 2008
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Also connected with this is checking the 'diopter' on your camera (if it has one.
xml's Blinklist.com 2008
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Also connected with this is checking the 'diopter' on your camera (if it has one.
xml's Blinklist.com 2008
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Even the best (read extravagantly expensive) binocular on the market will give you a fuzzy view of the world until you correctly set the diopter ring.
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Adjusting the diopter the right way makes all the difference.
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Look at the same object, and turn the diopter ring (see inset) to bring the object into sharp focus.
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Well, after archery today (I shot pretty well for somebody who is probably a quarter of a diopter off in the prescription for her dominant eye, currently) and dinner, I went after the poor shedding GRD with an undercoat rake.
skin as white as a cuttlefish bone matociquala 2009
hernesheir commented on the word diopter
(n): in optics and cinematography, part of the lens or viewfinding system that can be adjusted to compensate for one's own particular eyesight, allowing one to see the groundglass clearly.
January 18, 2009