Re: plane parallel window, spherical aberration


Michael Koch wrote:
Hi,
again a simple question:
Let's assume we have a perfect spherical wavefront coming from an ideal
point source.
After passing through a perfect plane parallel window, there is spherical
aberration in the wavefront. Does the amount of spherical aberration change
if the window is moved along the optical axis? I suppose the answer is no.
Thanks,
Michael

The answer is no. Imagine the rays going through the window. They are
bent identically no matter where the mirror is positioned.

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