Re: How to distinguish 160 vs 170 mm eypieces?

On Jan 18, 10:50 pm, Kevin Cunningham <sms...@xxxxxxxxxxxxxx> wrote:
shiraz14 wrote:
On Jan 18, 9:50 am, Richard J Kinch <ki...@xxxxxxxxxxx> wrote:
shiraz14 writes:
Also, yes the eyepiece's core function is still to magnify a virtual
image ...

You mean a real image, not virtual. An eyepiece produces a virtual
magnified image of the real image produced by the objective.

Hi Richard,

Thanks for the correction.

No, I did not wish to post this to the discussion forum, that's why I
deleted it. I must say I'm relatively astounded you managed to get the
post (I don't have it even though I'm subscribed to this group),
causing me to presume the post has been successfully deleted.

However, as you've pointed out, yes, the eyepiece forms a magnified
virtual image of the real image already formed by the objective.
Nevertheless, further recent research reveals that eyepieces too can
form real images, depending on the complexity of the system involved
(you can read a little about this on Nikon's MicroscopyU website here:
http://www.microscopyu.com/articles/optics/components.html).

By the way Richard (or Kevin), may I ask if you (or any
correspondences you may have) actually provide engineering services to
customize a particular microscope component? What I require is for
someone (preferably an optics expert) to precisely locate the rear
focal plane in my scope's trinocular head (I'm using a Leica DM4000M
scope, which employs infinity optics) and subsequently engineer and
fabricate a slot (sufficient for the insertion of a slider - the size
of which remains negotiable) into the head. I don't presume the rfp
lies within any of the prisms constituting the head, hence there
shouldn't be any complications in the location and synthesis of this
slot.

Thank you and anticipating your reply in this regard ...

Regards,
Shiraz

Precision location of sliders or reticules is rather common.  The
question is whether you need the slot placed were you think or whether
the slot could be placed some were else.  That's the joy of infinity
correction.  The first thing I would urge you to do is to take a look
a the Leica web site (www.leica-microsystems.com/), particularly at
the Leica polarizing part.  Pol. systems usually have all kinds of
slots.  Also take a look at the Klarmann Rulings site
(www.reticles.com/), they make eyepiece and other reticles

Another point is you should deal with some one close to home.  Its
relatively simple to design something, it's quite difficult to make
something perfectly the very first time.  It is far easier to take the
item back if the maker is three blocks away.

Thanks,

Kevin Cunningham
SMS- Hide quoted text -

- Show quoted text -

Hi Kevin,

Thanks for the reply.

Yes, the Pol scopes (& parts for Pol scopes) generally have a wide
number of slots (for insertion of analyzers, compensators, etc) but
these are common slots and do not suit my purpose. I need this slot to
be integrated into the trinoc head (just below the sliding prism
assembly and where the light rays converge, at the point of exit from
the infinity system), so that the slider inserted sits exactly in the
rear focal plane of the image formed by the specimen.

Thank you and anticipating your reply ...

Regards,
Shiraz
.

Relevant Pages

  • Re: How to distinguish 160 vs 170 mm eypieces?
    ... virtual image of the real image already formed by the objective. ... focal plane in my scope's trinocular head (I'm using a Leica DM4000M ... fabricate a slot (sufficient for the insertion of a slider - the size ...  That's the joy of infinity ...
    (sci.techniques.microscopy)
  • Re: How to distinguish 160 vs 170 mm eypieces?
    ... virtual image of the real image already formed by the objective. ... focal plane in my scope's trinocular head (I'm using a Leica DM4000M ... lies within any of the prisms constituting the head, ... eyepiece as shown and described at Molecular Expressions resources. ...
    (sci.techniques.microscopy)
  • Re: How to distinguish 160 vs 170 mm eypieces?
    ... virtual image of the real image already formed by the objective. ... focal plane in my scope's trinocular head (I'm using a Leica DM4000M ...  That's the joy of infinity ... eyepiece as shown and described at Molecular Expressions resources. ...
    (sci.techniques.microscopy)
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