Posted by
Michael Giacomelli on
URL: http://confocal-microscopy-list.275.s1.nabble.com/Multi-camera-adapter-tp7586600p7586601.html
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>Their questions was, is
> there any advantage to using a 2" diameter lens than to a 1" diameter lens,
> given that the microscope exit port field of view, and the emccd entrance
> port are both less than 1" anyways about 0.7 inches if I remember
> correctly.
It depends on if you need the added aperture. When I added a camera
to one of our scopes using a 250 mm tube lens, I ray traced the design
and got that I would need a 30 mm aperture on the tube lens to avoid
vignette on the edges of the sensor (which was only 11 mm wide). As
you add longer lenses, you will need to make them larger to maintain
the same FOV.
> They asked if a larger (2") lens would give less aberration
> because you are going "more through the middle" than a 1" lens where you
> are getting closer to the edges.
Possibly, but if you are concerned about aberration you should
probably simulate the design first. The choice and orientation of
lenses is going to have a much bigger impact than the diameter
(assuming you can use a smaller size lens that is).
Mike