Re: Entrance and Exit Pupils Positions

youzpalang@xxxxxxxxxxxx wrote:

>
>
>Hi:
>
>Does Entrance Pupil's position of an optic system depend on where the
>Object (a point source) is located on the oprics axis of the optic
>system?
>
>thanks


Simply, NO. The entrance pupil is the image of the aperture stop as
seen from object space and formed by any and all optics which lie
between the observer and the aperture stop. The position is generally
referenced to a distance from the first optical surface but may be
referenced to any reference point in the system.

The exit pupil is the image of the aperture stop as seen from image
space and formed by all of the optics between the observer and the
aperture stop.

In some systems these images are real and in others they are virtual.

See chapter 4 (or near it) in Optics by Jenkins and White for further
information.

Hope this helped. It took me a long time to clearly visualize it
myself.




James E. Klein
Engineering Calculations

jameseklein@xxxxxxxxxxxxx
http://home.earthlink.net/~76403795

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Relevant Pages

  • Re: Entrance and Exit Pupils Positions
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  • Re: Entrance and Exit Pupils Positions
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