Re: Olympus tube-lens with higher magnification

Posted by Mark Cannell on
URL: http://confocal-microscopy-list.275.s1.nabble.com/Olympus-tube-lens-with-higher-magnification-tp4559126p4559420.html

You can look for achromats in various sizes from Edmond and other
optical supply houses. If you place a suitable divergent lens behind
the  converging  Olympus lens you can increase its FL.

Hope this helps.
 
Cheers

Shalin Mehta wrote:

> Dear Listers,
> This is a specific query regarding Olympus microscope optics.
>
> We have a few high-NA low-magnification objectives, for which the
> nominal magnification on the objective does not provide sufficient
> sampling. Ours is an upright microscope, which makes it somewhat
> difficult to add custom magnification on top of the trinocular - as
> one needs a mount that mates with Olympus's custom-designed mounting.
>
> So, I am thinking of replacing the default Olympus tube-lens with a
> tube-lens of longer focal length (which will lead to increased
> magnification above nominal on the objective). Someone informed me
> that Olympus does provide such lenses, but I cannot find them on their
> website. We have tried adding variable magnification changer part from
> Olympus, but that introduces aberrations.
>
> Are such tube-lenses around?
>
> Thanks for any pointers,
> Shalin
>
> mobile: [phone]
> blog: shalin.wordpress.com
>
> Bioimaging Lab, Block-E3A, #7-10
> Div of Bioengineering, NUS Singapore 117574
> website: http://www.bioeng.nus.edu.sg/optbioimaging/colin/people.asp#shalinm
>