Sourcing Zeiss / Docter / Noblex macro lenses for Turmon and Turmon clones (1 Viewer)

[triskelion]

Hi all - first post here, but I've enjoyed the discussions as a lurker for a while. Deeply impressed by the passion and knowledge on show!

I own a Zeiss Jena Turmon folding monocular of which I'm very fond, and I know that Zeiss Jena, and their successors Docter and Noblex, also marketed a small roll of lens attachments for the Turmon and its clones that would permit using it as a field microscope and teleloupe.

I'd love to buy a set of these lenses, but despite canvassing what seems like the entire internet I can't find anywhere or anyone that might sell them to me. If anyone knows where I might look, or has a set to sell (ideally UK) I'd be glad of the info. A supplementary question, I suppose, is whether the attachments made for the polycarbonate Docter/Noblex Turmon clones would fit an original Turmon. I'm guessing they would, but would welcome superior knowledge on the topic.

Thanks for any help!

 

[KC Foggin]

Hi there triskelion and a warm welcome to you from all of us at BirdForum. Hope you get some suggestions.

 

[John A Roberts]

Hi triskelion,

Firstly, welcome to the forum.

To give others an idea of what you're talking about, I've attached an image showing the optical construction of the Turmon;
along with an image of the Noblex version, both correctly orientated for use and also when folded flat for carry (it was last in their 2019 catalogue).



More details can be found in post #99 at: Zeiss: Collection of cross-section and cutaway images
The last link to the Monokulare/ Monoculars site, shows the original Carl Zeiss Jena version along with variations,
and also various accessories that were produced - including lens attachments and a stand.


John


p.s. An illustration from Wikipedia shows why the two Porro prisms in use, need to be orientated at 90 degrees to each other:
so that the image is both inverted (top-to-bottom), and reversed (side-to-side).