phase filter?
From
RichD@21:1/5 to
All on Tue Mar 19 12:46:24 2019
I attended a seminar on computational imaging last week.
It was mostly over my head, as usual.
The speaker discussed a research project. They work
on the problem of maintaining focus, or de-blurring,
an object as it moves along the z-axis, that is, in
and out of the focal plane.
The key element is a customized phase filter, inserted
in front of the objective lens. Apparently a major
design challenge, as it can't be solved analytically,
and even numerically, very difficult.
All very interesting, except it leaves me wondering:
can anybody here expound on this phase filter
thigamabob, what's the magic sauce?
--
Rich
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