Looking help with a Zeiss KPL 10x W Br

[Michael Cytrynowicz]

Dear forum members, please forgive my writing in English. I love German, but can only read a bit, and writing and speaking is more difficult for me.

I have been trying to fix 2 delaminated Zeiss KPL 10x/18 W Br eyepieces (using Xylol/Malinol) and have been only very partially successful.

Were I have been VERY unsuccessful is putting the eyepieces back together. Yes, I'm an idiot, did not make good notes when I took them apart.

I am hoping someone can help me with the correct order and lens (doublet, eye-lens) orientation!

Attaching a photo of the big mess...

[Mark]

Hi uimike,

the pieces should fit together like this:



#3 has two threadings ; the larger, lower one will fit into #6, the
finer threading fits into #7  (notice that #3 is flipped 180° in respect to your image !)

#4  --> try out both directions, check if you see any difference
#5 --> looks like the ring that is supposed to prevent the eyelens from colliding with
       #4

eyelens --> flat side towards the eye, the eyelens will also fit in the upmost part of #3

as for the compound I marked "?"  : I haven´t found anything similar in any of my eyepieces  -
maybe for the gray filter ? If so, I would suggest it goes between 1 and 3 , but don´t you nail me
down on that ... good luck !

Mark

[rhamvossen]

Hi uimike,

Which microscope do you have? If you ever are going to buy other eyepieces, don't buy Zeiss Kpl-W. Better is Kpl8x or Leitz Periplan GF10x eyepieces, the latter also work well with Zeiss West objectives. The number of Kpl-W repairs done by many is countless so maybe this is a good opportunity to say that it's better to not buy them in the first place. Over the years I have become utterly disappointed by all this "high-end" Zeiss stuff of which I now know I would never ever purchase again. Best,

Rolf

[Michael Cytrynowicz]

Mark, Thank You!!

Your instructions helped me put it back together again in 5 minutes 

I love this forum (and I am always amazed at the collective knowledge and experience in here)

Vielen Dank!

Michael

[Michael Cytrynowicz]

Hi uimike,

"Which microscope do you have?..."

Hi Rolf, I'm humbled to get a post from you - I follow your site, your work with "hybrid" eyepieces, and all else !

I have an old Standard RA, well a hybrid of it and other Standard stands. I got it when I was 14, and it was loooooong ago.  Stephan Hiller is making me a new LED light, and I am getting also a phase condenser II z from him.

I followed advice from people here and in other forums (Pau, for example), and on top of the Seidentopf trinocular added a Zeiss "Halbkugel" tube, with a Pentax-M 40 mm pancake lens, 2 adapter rings from RAF in Belarus, and a Canon EOS 80D.

I read carefully your articles! - so I ended up buying several eyepieces, including 2 Periplan. One of the issues is getting something highpoint and wide-angle enough to fill the FOV of the camera - but maybe I'm not doing it right.

I did get success fixing one of the KPL W 10x Br (the fixed one) with Xylol and Malinol - let's see if it lasts...  and it works reasonably well as a photo eyepiece (until I get an S-KPL which is coming).

What I could not get at all was finding any eyepiece that would work well with my humble Zeiss 3,2x - no planarity at all.

I am starting to get the feeling that noting will work well with very low-power objectives. But of course my current condenser is the very humble Zeiss 0.9.

What are your thoughts?

[Michael Cytrynowicz]

And here is the Standard...

[rhamvossen]

Hi Michael,

What I could not get at all was finding any eyepiece that would work well with my humble Zeiss 3,2x - no planarity at all.

I am starting to get the feeling that noting will work well with very low-power objectives. But of course my current condenser is the very humble Zeiss 0.9.

That's a known issue. Zeiss Oberkochen never made an eyepiece that works well with the 3.2/0.07 achromat. The problem lies in the compensation, the 3.2 does not (or barely) need compensation, so the image will be overcorrected when one of the compensating Zeiss eyepieces (C, Cpl, Kpl) is used. If you want to make pictures using this objective, you need a non-compensating eyepiece. Some simple Huygens eyepiece of any brand or a no-name WF10x eyepiece may work well with the 3.2. I described the problem with te 3.2 here:

https://microscopyofnature.com/right-combination-objective-and-eyepiece


Best regards,

Rolf

PS: there's no need to be "humble", I'm just a guy who likes to fool around with optical parts