# Part name:
Carl Zeiss Jena 23,2mm microscope photo tube | projection eyepiece and camera adapter, LOMO compatible

# Original page URL:
https://www.microscopeparts.eu/part/carl-zeiss-jena-ergaval-23-2mm-microscope-photo-tube-projection-eyepiece-and-camera-adapter-lomo-compatible-91057

# 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:
Adapters

# Description and specifications:
Carl Zeiss Jena photo tube / camera adapter - also fitting microscopes from other makers: LOMO, Meopta, Olympus, IOR.

The tube allows a camera or a camera body to be attached to a trinocular head or directly to the microscope body, even when there is no trinocular head.

Basic technical parameters of this tube:
Manufacturer: Carl Zeiss Jena
Colour: grey
Tilt angle: none, this is a straight tube
Internal optics: none - not even a deflecting prism
Mounting to the trinocular head or microscope body: ring with a dovetail
Dovetail diameter: 41 mm
Type of connection at the output: empty tube / barrel
Tube diameter at the output: 23.2 mm internal diameter
Length of the barrel / tube: 25 mm
Length adjustment: no - this is not a tube with adjustable height

Since the adapter has an empty barrel with an internal diameter of 23.2 mm on the output side, a projection eyepiece of that diameter can be placed in it, or a so-called "USB eyepiece", that is a digital microscope camera. Adapters between the 23.2 mm barrel and the M42 thread are also widely available, and from the M42 thread you can move on to any other mount: Nikon, Canon, Sony and others.

Such a tube can be mounted directly on the microscope body instead of the head. A dovetail seat with a diameter of 41.0 - 41.5 mm is found, among others, on the microscopes:
- Carl Zeiss Jena
- LOMO
- Meopta
- IOR
- Reichert Biopan
- Olympus CH

It is also often used in microscopes with a slightly larger seat, among others Zeiss West Germany, Leitz Wetzlar, PZO, Will Wetzlar, Hund Wetzlar.

The adapter can equally well be fitted onto trinocular heads, as many of them have a seat prepared for it, among others:
- the output in the trinocular tubes of the Carl Zeiss Jena Jenamed, Jenaval, Jenalumar, Jenatech, Jenavert, Jenapol microscopes
- the LOMO TRN-1 heads (ЛОМО ТРН-1), found in the LOMO Polam microscopes
- some versions of the intermediate photo tubes for the Carl Zeiss Jena Mikroval series microscopes (others require a tube screwed onto a thread)

This is not a "tube for one specific microscope model". A trinocular head can be mounted not only on the microscope it was sold with - it is therefore correct to assume that this is a universal tube, with a 41 mm dovetail on one side and a 23.2 mm barrel on the other.

The "compatibility" section gives an example list of microscopes this tube fits, although it is not a complete list.

# Examples of use
- if you need a tube that allows a camera or photographic camera to be connected to a trinocular head
- if you need to connect a camera or photographic camera directly to the microscope body

# Removed from microscope:
Carl Zeiss Jena Ergaval

# Also compatible with the following microscopes:
- Carl Zeiss Jena NU
- Carl Zeiss Jena NU-2
- Carl Zeiss Jena Eduval
- Carl Zeiss Jena Eduval-4
- Carl Zeiss Jena Laboval
- Carl Zeiss Jena Laboval-2
- Carl Zeiss Jena Laboval-4
- Lomo TRN-1
- Lomo TRH-1
- Lomo HU-POL
- Carl Zeiss Jena Neophot 21
- Lomo MMU-3
- Carl Zeiss Jena Jenamed
- Carl Zeiss Jena Jenalab
- Carl Zeiss Jena Jenaval
- Carl Zeiss Jena Jenalumar
- Carl Zeiss Jena BK 70x50
- Carl Zeiss Jena Amplival
- Carl Zeiss Jena Ergaval
- Carl Zeiss Jena Docuval
- Carl Zeiss Jena Vertival
- Carl Zeiss Jena Epival
- Carl Zeiss Jena Metaval
- Carl Zeiss Jena Fluoval
- Carl Zeiss Jena Epityp-2
- Carl Zeiss Jena Epignost
- Carl Zeiss Jena Jenatech
- Carl Zeiss Jena Pictoval
- Carl Zeiss Jena Telaval
- Carl Zeiss Jena Jenavert
- Carl Zeiss Jena Jenapol
- Carl Zeiss Jena Trinocular Head for Microval- microscopes
- Olympus CK2
- Olympus BHA
- Olympus CH
- Olympus CH-2 CHT
- Olympus CH-2 CHS
- Lomo Biolam
- Lomo Biolam-I
- Lomo MBI-15
- Lomo MICMED-2
- Lomo MBI-11
- Lomo Biolam-M
- Lomo Metam
- Lomo Biolam
- Lomo Polam R-113
- Lomo Polam L-211
- Lomo Polam LMPR
- Lomo Polam R-311
- Lomo Biolam D11
- Lomo Polam L-213
- Lomo Erudit
- Lomo Biolam 70
- Lomo ML-2
- Meopta DD 37 BN
- Reichert Biopan

# Names, descriptions, terms, and search contexts under which this part is searched.
- Carl Zeiss Jena Ergaval microscope repair parts
- Carl Zeiss Jena Jenaval Fototubus 41 mm
- Jenamed Jenapol photo tube 23.2 mm adapter
- LOMO Polam TRN-1 Fototubus ersetzen
- Olympus CH Meopta IOR phototube
- Reichert Biopan photo tube cracked
- Mikroval Fotoansatz gesprungen
- fototubus na mikroskop a Zeiss Jena
- tubo fotografico microscopio PZO Biolar
- adattatore fotocamera microscopio Zeiss Jena
- tubo fotográfico microscopio Lomo Biolam
- adaptador de cámara microscopio PZO Biolar
- tubus fotograficzny mikroskopowy Zeiss Jena
- Carl Zeiss Jena buy spare parts

# Related URLs:
- Markdown po polsku: https://www.serwismikroskopowy.pl/part/91057.md
- Markdown auf Deutsch: https://www.mikroskopteile.de/part/91057.md
- Gallery of all photos of this part: https://www.microscopeparts.eu/gallery/91057-carl-zeiss-jena-ergaval-23-2mm-microscope-photo-tube-projection-eyepiece-and-camera-adapter-lomo-compatible
- Media manifest of this part (photos + videos, for AI/RAG): https://www.microscopeparts.eu/part/91057.media.md
- Representative photo: https://www.microscopeparts.eu/photo/carl-zeiss-jena-ergaval-23-2mm-microscope-photo-tube-projection-eyepiece-and-camera-adapter-lomo-compatible-91057-2
- Other parts from category Adapters: https://www.microscopeparts.eu/adapters
- More Adapters removed from microscope Carl Zeiss Jena Ergaval: https://www.microscopeparts.eu/adapters/from/carl-zeiss-jena/ergaval
- More Adapters compatible with microscope Carl Zeiss Jena Ergaval: https://www.microscopeparts.eu/adapters/for/carl-zeiss-jena/ergaval
- More Adapters removed from microscopes Carl Zeiss Jena: https://www.microscopeparts.eu/adapters/from/carl-zeiss-jena
- More Adapters compatible with microscopes Carl Zeiss Jena: https://www.microscopeparts.eu/adapters/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: 2026-10-02