reflection in center of FOV

[janvangastel]

It's 23 mm, so it will fit into the camera tube of my Orthoplan. And a spacer will bring it 5 mm higher. Maybe I am wrong, but but I think I will need an adapter for attaching my camera to the eyepiece. The adapter I already have is to narrow, because it's outside diameter is 23 mm. How far should the top lens of the eyepiece be from the camera sensor?
I have ordered the eyepiece.

[mrsonchus]

Hi Jan, there's a reduction-lens up the other end also in my setup - here's an earlier post of this situation with images of my components and of how another fellow put his together.

This is my setup, but you may find the parts hard to find quickly though.

ws_labelled-leitz-full-opti.jpg (73.9 KiB) Viewed 7652 times

The above thread is a really good look into this fitting and at the end of the posts there's a great find by a member who discovered that the reduction lens can be found as part of a camera-piece also, and simply removed!

John B.

[janvangastel]

So, when the periplan eyepiece arrives I will have C, D and E. I can ask my friend to 3D print part B. And I can by a T-ring (or something like that) to mount that to the camera. Missing is the reduction lens. Is it impossible to make reasonably good photographs without a reduction lens?

[MichaelG.]

... Missing is the reduction lens. Is it impossible to make reasonably good photographs without a reduction lens?

No, certainly not impossible
... But without a reduction lens, the camera's field of view will be less than the visual field.

MichaelG.

[75RR]

Certainly possible. I used to use a raised 'normal' eyepiece as a projection lens without a reduction lens within the setup. Image was fine. It is mostly about how much of the microscope field of view you can capture or want to.

In case you have not read this:

http://www.krebsmicro.com/pdf/trinoc_a3.pdf


Field of view vs camera sensor size:
https://www.martinmicroscope.com/field-of-view-fov/

Note: Just a reminder that in Leitz 170 tube length microscopes the intermediate image is 18mm below the upper edge of the tube, not 10mm as it is in 160 tube length microscopes.

[mrsonchus]

Hi Jan, yes as the others have said, it's all about FOV coverage now.
You have (or very soon will) the requirements to match the objective and eyepiece corrections with the periplan spec so your images will be fine, and with the shim, projected. The above fellows are very knowledgeable in this area and will certainly steer you right with this, I'm also reading with interest as I've a lot to learn re photomicrography techniques and configurations.

John B.

[janvangastel]

Alas, I had an email from the seller of the periplan eyepiece, telling that it was sold. I already had a refund from the seller. There are some more on ebay, but only in the USA, with very high shipping cost, sometimes more then the price of the eyepiece. So I will have to wait.

[75RR]

Assuming the 30mm diameter will fit your phototube ? Make a €30 euro offer. Nothing much to lose!

https://www.ebay.de/itm/Leitz-Leica-Per ... 0505.m3226

or this one perhaps ...

https://www.ebay.de/itm/Leitz-Wetzlar-O ... rk:28:pf:0

They are in Germany so shipping at least is more reasonable.

[janvangastel]

Would this be a goodadapter for my Orthoplan with the periplan eyepiece I already ordered https://www.ebay.co.uk/itm/0-3X-C-mount ... 0041.m2061? And I guess I also need a C-mount that fits my camera and this adapter.

[mrsonchus]

Hi Jan, I think this one is the smaller diameter one for the ToupCam USB eyepiece cameras rather than the DSLR cameras. This adapter doesn't use an eyepiece as it has it's own optics.

John B.

Here's a link to the same one - from Amscope in the U.K. It's the same as the Brunel one - which doesn't seem to be available from Brunel at the moment.
This one is also complete with optics inside - AND an adapter-ring. Again, no eyepiece needed...

This is it,

ws_adapter.jpg (18.61 KiB) Viewed 7563 times

I have one of these and it works well, not quite as well as the whole Leitz-asembly, but definitely OK.

John B.

[janvangastel]

Today my periplan eyepiece arrived. It is 30 mm, so it does not fit into the camera tube of the orthoplan. I looked for 30 mm camera tubes for my orthoplan, but found none, neither on ebay nor anywhere else . Has anyone seen one of these offered in the past or do they not exist?

[75RR]

Can you provide a photo of your photo-tube that shows the screw that holds the sleeve adapter in place?

Can you remove the sleeve. What size aperture is there?

[janvangastel]

Yes, I can remove it, see photographs. I cannot remove the 23 mm part.

camera_ingang.jpg (181.35 KiB) Viewed 7393 times

camera_ingang_2.jpg (191.32 KiB) Viewed 7393 times

[75RR]

It does exist, here is one ... not very cheap though. Perhaps you will have better luck finding a less expensive one. If you can't, it may be simpler to get a 23mm Periplan

https://www.ebay.com/itm/Leica-Phototub ... :rk:1:pf:0