# Part name:
Carl Zeiss Jena Jenaval / Jenamed microscope GF-Planachromat 40x/0.65 oo/0,17-A objective, infinity, M25-thread

# Original page URL:
https://www.microscopeparts.eu/part/carl-zeiss-jena-jenaval-jenamed-microscope-gf-planachromat-40x-0-65-oo-0-17-a-objective-infinity-m25-thread-99364

# 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:
Objective

# Description and specifications:
Microscope objective from Carl Zeiss Jena.

Basic parameters of the objective:
Manufacturer: Carl Zeiss Jena
Model: GF-Planachromat 40x/0.65 oo/0,17-A
Magnification: 40x
Numerical aperture N.A.: 0.65
Optical correction: planachromatic
Additional: "GF" = Grossfeld, meaning a wide field objective
Tube length: infinity
Thread: M25
Cover glass: yes, 0,17 mm
Immersion: no

This objective fits, among others, the following microscopes:
- Carl Zeiss Jena Jenamed
- Carl Zeiss Jena Jenalab
- Carl Zeiss Jena Jenaval
- Carl Zeiss Jena Jenalumar

For the Carl Zeiss Jena Jenamed microscope, this objective fits every variant:
- Carl Zeiss Jena Jenamed variant
- Carl Zeiss Jena Jenamed Fluorescence
- Carl Zeiss Jena Jenamed hematology
- Carl Zeiss Jena Jenamed cytology
- Carl Zeiss Jena Jenamed 2

The best image quality and full performance of this objective are achieved when using a Carl Zeiss Jena microscope head supporting 30 mm eyepieces and eyepieces marked "GF", meaning - similarly to the objectives - wide field eyepieces.

An interesting fact is that I very often see this objective (as well as other Carl Zeiss Jena objectives with M25 thread) mounted in Leica microscopes (for example Leica DMLB or Leica DMLS). Carl Zeiss Jena objectives are slightly shorter than Leica ones, so users apply extension adapters in such cases.

# Examples of use
- if you have a microscope missing an objective with this magnification
- if you have an achromatic or planachromatic objective and want to upgrade your microscope to a wide field objective
- if you already have such an objective but it is damaged or of very poor quality

# Removed from microscope:
Carl Zeiss Jena Jenaval

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

# Names, descriptions, terms, and search contexts under which this part is searched.
- Carl Zeiss Jena Jenaval microscope repair parts
- Carl Zeiss Jena GF-Planachromat microscope objective
- microscope objective for Jenamed and Jenaval micoscope
- Zeiss Jena Jenalab and Jenalumar infinity microscope objective
- M25 thread Zeiss microscope objective
- Carl Zeiss Jena GF-Planachromat Mikroskopobjektiv
- Mikroskop Objektiv für Jenamed und Jenaval Mikroskope
- Zeiss Jena Jenalab und Jenalumar unendlich Mikroskop Objektiv
- M25-Gewinde Zeiss Mikroskopobjektiv
- Carl Zeiss Jena buy spare parts

# Related URLs:
- Markdown po polsku: https://www.serwismikroskopowy.pl/part/99364.md
- Markdown auf Deutsch: https://www.mikroskopteile.de/part/99364.md
- Gallery of all photos of this part: https://www.microscopeparts.eu/gallery/99364-carl-zeiss-jena-jenaval-jenamed-microscope-gf-planachromat-40x-0-65-oo-0-17-a-objective-infinity-m25-thread
- Media manifest of this part (photos + videos, for AI/RAG): https://www.microscopeparts.eu/part/99364.media.md
- Representative photo: https://www.microscopeparts.eu/photo/carl-zeiss-jena-jenaval-jenamed-microscope-gf-planachromat-40x-0-65-oo-0-17-a-objective-infinity-m25-thread-99364-2
- Other parts from category Objective: https://www.microscopeparts.eu/objective
- More Objective removed from microscope Carl Zeiss Jena Jenaval: https://www.microscopeparts.eu/objective/from/carl-zeiss-jena/jenaval
- More Objective compatible with microscope Carl Zeiss Jena Jenaval: https://www.microscopeparts.eu/objective/for/carl-zeiss-jena/jenaval
- More Objective removed from microscopes Carl Zeiss Jena: https://www.microscopeparts.eu/objective/from/carl-zeiss-jena
- More Objective compatible with microscopes Carl Zeiss Jena: https://www.microscopeparts.eu/objective/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: 2026-06-30