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field stop

noun, Optics.
the aperture that limits the field of view of a lens or system of lenses. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for field stop
  • Using a unique interface, officers can complete a field stop in less than five minutes.
  • The receiver aperture is located at the entrance port of the averaging sphere, and is the field stop of the receiver.

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