Quick question. I know that, in a wave optics representation of
imaging, shifting the detector away from the "true" image plane can be
treated as a quadratic defocus term in the optical phase at the exit pupil.
Now for the question: if instead of shifting the detector, I shift the
object position away from the "true" plane, is the defocus still a
quadratic?
Thanks,
Harry
PS This is not a homework question. I took Fourier Optics a few years
back, and I know that if I haul out my copy of Goodman, I can probably
work this out. Just wondered if anyone has the answer off the top of
their head.
