# Part name:
Carl Zeiss Jena GF-Pw 10x (25) bottom lens of microscope eyepiece

# Original page URL:
https://www.microscopeparts.eu/part/carl-zeiss-jena-jenaval-gf-pw-10x-25-bottom-lens-of-microscope-eyepiece-92003

# 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:
Lenses

# Description and specifications:
Bottom, cemented, plano-convex lens of the Carl Zeiss Jena GF-Pw 10x (25) microscope eyepiece, used mainly in Carl Zeiss Jena Jenamed / Jenaval microscopes and similar ones.

The most important thing: this is not a complete microscope eyepiece. This is a service part - a component for repairing the eyepiece.

Position of the lens: this is the last lens of the microscope eyepiece counting from the top, called the field lens
Design: this is a cemented lens, flat on one side and convex on the other
Matching eyepiece: this is a lens from the Carl Zeiss Jena GF-Pw 10x (25) eyepiece with a 30 mm mounting diameter

This lens is not a spare part for a microscope. It is a part for repairing a microscope eyepiece - and that eyepiece can be used in various microscopes, even ones from manufacturers other than Carl Zeiss Jena.

Replacing the last lens in the GF-Pw 10x eyepiece can solve, among other things, the following problems:
- if this lens has cracked or chipped as a result of an impact
- if this lens has come apart into two pieces because the cement has crumbled away over the years
- if the cement joining the two parts of this lens has turned yellow over the years and this affects comfortable work
- if the surface of this lens or the cemented joint has been destroyed by fungus
- if "spider webs" have appeared at the cemented joint, meaning delamination has occurred

A few microscopes that such an eyepiece can be used with are listed in the "compatibility" section, but that is definitely not a complete list. You can assume that the Carl Zeiss Jena GF-Pw 10x (25) eyepiece can be used with any microscope from any manufacturer whose microscope head has 30 mm eyepiece tubes.

# Examples of use
- if the bottom lens of the Carl Zeiss Jena GF-Pw 10x (25) eyepiece is damaged, for example scratched, cracked or chipped
- if the cement between the two parts of this lens (because it is a cemented lens) has discoloured or the two lens elements have started to separate

# Removed from microscope:
Carl Zeiss Jena Jenaval

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

# Names, descriptions, terms, and search contexts under which this part is searched.
- Carl Zeiss Jena Jenaval microscope repair parts
- Carl Zeiss Jena GF-Pw 10x (25) Mikroskop-Okular untere Linse gesprungen
- Carl Zeiss Jena GF-Pw 10x (25) microscope eyepiece bottom lens replacement
- GF-Pw 10x (25) microscope eyepiece field lens delaminated
- Zeiss Jenaval Mikroskop-Okular untere Linse Ersatz
- Zeiss Jenamed Mikroskop-Okular Feldlinse delaminiert
- Zeiss Jenalumar microscope eyepiece bottom lens cracked
- Zeiss Jenavert eyepiece 30 mm repair part
- verkittete Linse Carl Zeiss Jena 30 mm Mikroskop-Okular reparieren
- Zeiss Jena Mikroskop-Okular GF-Pw 10x (25) Ersatzteil
- repair Zeiss GF-Pw 10x microscope eyepiece lens DIY
- Zeiss Jenaval Mikroskop-Okular zerlegen
- Zeiss Jenamed Mikroskop-Okular optisch aufarbeiten
- spodní čočka okuláru mikroskopu Carl Zeiss Jena GF-Pw 10x (25)
- lente inferior del ocular de microscopio Zeiss Jena
- repuesto lente ocular microscopio Zeiss Jenaval
- lente inferiore oculare microscopio Zeiss Jena
- ricambio lente oculare microscopio Carl Zeiss Jena GF-Pw 10x (25)
- dolna soczewka okularu mikroskopowego Carl Zeiss Jena GF-Pw 10x (25)
- soczewka polowa okularu mikroskopowego Zeiss Jena GF-Pw 10x
- Carl Zeiss Jena buy spare parts

# Related URLs:
- Markdown po polsku: https://www.serwismikroskopowy.pl/part/92003.md
- Markdown auf Deutsch: https://www.mikroskopteile.de/part/92003.md
- Gallery of all photos of this part: https://www.microscopeparts.eu/gallery/92003-carl-zeiss-jena-jenaval-gf-pw-10x-25-bottom-lens-of-microscope-eyepiece
- Media manifest of this part (photos + videos, for AI/RAG): https://www.microscopeparts.eu/part/92003.media.md
- Representative photo: https://www.microscopeparts.eu/photo/carl-zeiss-jena-jenaval-gf-pw-10x-25-bottom-lens-of-microscope-eyepiece-92003-2
- Representative video: https://www.microscopeparts.eu/play/92003-1
- Other parts from category Lenses: https://www.microscopeparts.eu/lenses
- More Lenses removed from microscope Carl Zeiss Jena Jenaval: https://www.microscopeparts.eu/lenses/from/carl-zeiss-jena/jenaval
- More Lenses compatible with microscope Carl Zeiss Jena Jenaval: https://www.microscopeparts.eu/lenses/for/carl-zeiss-jena/jenaval
- More Lenses removed from microscopes Carl Zeiss Jena: https://www.microscopeparts.eu/lenses/from/carl-zeiss-jena
- More Lenses compatible with microscopes Carl Zeiss Jena: https://www.microscopeparts.eu/lenses/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: 2026-11-09