Exit-pupil sentence example

  • Since many of the rays coming from the exit-pupil of the objective would not reach the eye of the observer at all, it is necessary, in order to make use of all of them, to direct the diverging rays forming the real image so that the whole of the light enters the eye of the observer.
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  • Both lenses together form the exit-pupil of the objective behind the eyelens, so that this image, the exit-pupil of the total system or the Ramsden circle, is accessible to the eye of the observer.
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  • Here also the exit-pupil is accessible to the eye and through it the whole field can be seen by moving the head and eye.
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