iris diaphragm

  1. diaphragm consisting of thin overlapping plates that can be adjusted to change the diameter of a central opening
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How To Use iris diaphragm In A Sentence

  • It has an iris diaphragm, and an optical and LCD screen viewfinder.
  • It has an adjustable iris diaphragm, with up to 10 mm clear aperture, mounted in a 30 mm diameter barrel.
  • These iris diaphragms are made from tempered and blackened steel leaves mounted in a metal ring.
  • Some of our iris diaphragms use a two-iris system to allow them to be closed completely to a zero aperture.
  • This is the job of the iris diaphragm, a series of overlapping metal plates that can fold in on each other or expand out.
  • Implicit in such microscopes are design elements such as solid metal alloys, high quality prisms rather than mirrors and iris diaphragms not disk type diaphragms, among others.
  • The iris leaves of Melles Griot iris diaphragms, constructed of corrosion-resistant, blackened spring-steel, are mounted on a low-friction bearing pins.
  • The condenser is equipped with an iris diaphragm , a shutter controlled by a lever which is used to regulate the amount of light entering the lens system.
  • In experiments to find the effect of lens diameter he invented the familiar iris diaphragm.
  • Focusing the condenser on a microscope without an iris diaphragm is carried out by removing the slide from the stage and placing a piece of thin card half-way across the light source aperture.
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