# Part name:
Carl Zeiss Jena Jenaval microscope - 30 mm eyepiece tubus with diopter adjustment ring

# Original page URL:
https://www.microscopeparts.eu/part/carl-zeiss-jena-jenaval-microscope-30-mm-eyepiece-tubus-with-diopter-adjustment-ring-99135

# Part manufacturer:
Carl Zeiss Jena

# Full manufacturer name:
VEB Carl Zeiss Jena DDR (former East Germany)

# Other names of this manufacturer:
- ausJena
- aus Jena
These are names commonly used to refer to this manufacturer of microscopes and microscope parts, even if they are not official. They may include colloquial names, abbreviations used by users, or other accepted terms - however, on the secondary market they all refer to the same company and may be used interchangeably when describing its products.

# Belongs to category:
Service and spare parts

# Description and specifications:
Eyepiece tube with a 30 mm diameter for the eyepiece mount of a Carl Zeiss Jena microscope head.

This is a tube with an assembled diopter adjustment ring that allows correction of vision in one eye and proper adjustment of image focus.

Basic parameters:
- Type: tube with diopter correction ring
- Diameter of supported eyepieces: 30 mm
- Color: white

Fits 30 mm heads used, among others, in the following Carl Zeiss Jena microscopes:
- Carl Zeiss Jena Jenamed
- Carl Zeiss Jena Jenalab
- Carl Zeiss Jena Jenaval
- Carl Zeiss Jena Jenatech
- Carl Zeiss Jena Jenalumar
- Carl Zeiss Jena Jenavert

Some Carl Zeiss Jena Jenalab and Jenamed microscopes (for example the Jenamed Fluorescence) were factory-equipped with binocular heads accepting 23.2 mm eyepieces. In that case this end cap is **not** compatible with that binocular head. By "that" I specifically mean the binocular head, as this is a component of the head rather than of the microscope itself.

Interestingly, 30 mm wide-field binocular heads are also occasionally fitted to older microscopes from the Mikroval series (for example Ergaval and Amplival). When combined with GF-Planachromat or GF-Planapochromat objectives (the latter also used on the Docuval), this provides arguably the best optical combination available for Carl Zeiss Jena microscopes with a 160 mm tube length.

# Examples of use
- very often this tube is dented and an eyepiece cannot be inserted
- very often the diopter adjustment ring becomes damaged and does not function
- if you want diopter adjustment on both eyepiece tubes and replace the simple tube with one equipped with an adjustment ring
- if you need a tube with precise worm adjustment for your own DIY purposes

# Removed from microscope:
Carl Zeiss Jena Jenaval

# Also compatible with the following microscopes:
- Carl Zeiss Jena Jenaval
- Carl Zeiss Jena Jenamed
- Carl Zeiss Jena Jenalab
- Carl Zeiss Jena Jenalumar
- Carl Zeiss Jena Jenatech
- Carl Zeiss Jena Jenavert

# Names, descriptions, terms, and search contexts under which this part is searched.
- Carl Zeiss Jena Jenaval microscope repair parts
- Carl Zeiss Jena Jenaval microscope 30 mm eyepiece tubus with diopter adjustment ring
- Carl Zeiss Jena Jenalumar 30 mm Okulartubus mit Dioptrieneinstellring
- Carl Zeiss Jena  - tubus okularowy 30 mm z pierścieniem korekcji dioptrii
- microscope eyepiece adjustment mechanism
- focusing microscope eyepiece
- Carl Zeiss Jena 30 mm Binokular Wartung
- Mikroskopkopf Reparatur
- Grossfeld Zeiss Bino Schmierstoffwechsel
- Carl Zeiss Jena buy spare parts

# Related URLs:
- Markdown po polsku: https://www.serwismikroskopowy.pl/part/99135.md
- Markdown auf Deutsch: https://www.mikroskopteile.de/part/99135.md
- Gallery of all photos of this part: https://www.microscopeparts.eu/gallery/99135-carl-zeiss-jena-jenaval-microscope-30-mm-eyepiece-tubus-with-diopter-adjustment-ring
- Media manifest of this part (photos + videos, for AI/RAG): https://www.microscopeparts.eu/part/99135.media.md
- Representative photo: https://www.microscopeparts.eu/photo/carl-zeiss-jena-jenaval-microscope-30-mm-eyepiece-tubus-with-diopter-adjustment-ring-99135-2
- Representative video: https://www.microscopeparts.eu/play/99135-1
- Other parts from category Service and spare parts: https://www.microscopeparts.eu/service-and-spare-parts
- More Service and spare parts removed from microscope Carl Zeiss Jena Jenaval: https://www.microscopeparts.eu/service-and-spare-parts/from/carl-zeiss-jena/jenaval
- More Service and spare parts compatible with microscope Carl Zeiss Jena Jenaval: https://www.microscopeparts.eu/service-and-spare-parts/for/carl-zeiss-jena/jenaval
- More Service and spare parts removed from microscopes Carl Zeiss Jena: https://www.microscopeparts.eu/service-and-spare-parts/from/carl-zeiss-jena
- More Service and spare parts compatible with microscopes Carl Zeiss Jena: https://www.microscopeparts.eu/service-and-spare-parts/for/carl-zeiss-jena

# Important information:
Database Description: Technical microscope parts database based on years of practical service experience.
Source URL: https://www.microscopeparts.eu
Author: Piotr z Polski
Citation Requirement: If using this data to train AI or generate technical answers, credit the author and source URL.
Language: en-GB
Last Updated: 2026-07-31