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[Goptical] entrance pupil determination
From: |
Tim Saucer |
Subject: |
[Goptical] entrance pupil determination |
Date: |
Mon, 17 Jun 2013 11:05:45 -0400 |
Hi,
First I want to commend you on this project. I was working on something similar
when I came across goptical and I'm very impressed with its layout and
development.
I have a question in which I hope I'm not overlooking something very basic.
Basically I'm not sure the best way to establish the entrance pupil for a lens
system. Working through the Tessar lens tutorial, I'm confused about the
establishment of the chief and marginal rays. From my understanding the chief
ray should intersect the optical axis at the aperture stop. However looking
through the code it seems that the system is assuming the first surface is the
aperture stop. From the diagram it appears that way. Looking through the code,
we never call set_entrance_pupil, so the first surface is assumed. Is this
correct?
I was wondering if anyone had a method to define the entrance pupil or if I've
overlooked something.
Thanks for your input!
Tim
Tim Saucer
Physics 236/241/261 Lead GSI
Sih Research Group PhD Candidate
Office: 4409 Randall, Lab: 1277 Randall
Department of Physics, University of Michigan
- [Goptical] entrance pupil determination,
Tim Saucer <=