# Part name:
Zeiss Slit Lamp F=125 microscope objective f=125 with 47mm mounting thread

# Original page URL:
https://www.microscopeparts.eu/part/zeiss-slit-lamp-f-125-microscope-objective-f-125-with-47mm-mounting-thread-99863

# Part manufacturer:
Zeiss

# Full manufacturer name:
Carl Zeiss West Germany

# Other names of this manufacturer:
- Carl Zeiss West
- Carl Zeiss West Germany
- Opton
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:
Main objective f=125 for the Carl Zeiss slit lamps 125/16 and 100/16.

This objective fits the following slit lamp microscopes:
- Carl Zeiss Slit Lamp 125/16
- Carl Zeiss Slit Lamp 100/16

I have not found any documentation confirming my assumption, but most probably this objective also fits the models:
- Carl Zeiss Slit Lamp 20 SL
- Carl Zeiss Slit Lamp 30 SL

Important: it is widely but wrongly believed that these slit lamp models have a built-in objective with a magnification changer. That magnification changer is not an objective. It is a Galilean lens system, while the objective itself screws onto a thread underneath the body of this microscope.

A note on the mounting thread diameter: this f=125 objective has a mounting thread of 47 mm diameter. Slit lamps are not surgical microscopes, even though they are sometimes - incorrectly - called Zeiss OPMI f=125. The early models of the Zeiss OPMI surgical microscopes have objectives with a mounting thread of 48 mm diameter. This single millimetre of difference is why objectives from these two kinds of microscopes are often confused, especially as they can almost be screwed into a female thread 1 mm larger or smaller in diameter.

Several terms are used for this slit lamp microscope (slit lamp):
- Carl Zeiss Spaltlampe 125/16
- Carl Zeiss Spaltlampe f=125
- Carl Zeiss Slit Lamp f=125
- Carl Zeiss Slit Lamp 125/16
- Carl Zeiss OPMI f=125 (although this name is incorrect)
- Carl Zeiss f=125 head
- Carl Zeiss f-125 slit lamp microscope
- Carl Zeiss f-125 slit lamp
- Carl Zeiss f-125 stereo microscope
[[//BLOK]]

# Examples of use
- if you own a Carl Zeiss Slit Lamp F 125 without an objective (because someone unscrewed it, for example) or with a damaged one
- if you own a Carl Zeiss Slit Lamp F 100 without an objective or with a damaged objective
- if you own a Carl Zeiss Slit Lamp F 100 with the objective standard for that model (that is f=100) and you want to increase its working distance to 125 mm

# Removed from microscope:
Zeiss Slit Lamp f=125

# Also compatible with the following microscopes:
- Zeiss Slit Lamp f=125
- Zeiss Slit Lamp f=100

# Names, descriptions, terms, and search contexts under which this part is searched.
- Zeiss Slit Lamp f=125 microscope repair parts
- Zeiss Slit Lamp 125/16 Hauptobjektiv f=125
- Zeiss slit lamp objective lens f=125 replacement
- Spaltlampe Zeiss 100/16 Objektiv fehlt
- Zeiss slit lamp missing objective lens
- Zeiss Spaltlampe Objektiv gesprungen
- Zeiss slit lamp front lens cracked
- Zeiss F 125 Spaltlampe Objektiv nachrüsten
- Zeiss F-125 slit lamp lens DIY repair
- Zeiss 30 SL/M Objektiv f=125
- Zeiss 20 SL slit lamp objective
- Objektivgewinde 47 mm Zeiss Spaltlampe
- Zeiss slit lamp objective thread 47 mm
- Zeiss Spaltlampe Arbeitsabstand 125 mm Objektiv
- obiektyw f=125 do lampy szczelinowej Zeiss
- objektiv f=125 pro štěrbinovou lampu Zeiss
- objetivo f=125 para lampara de hendidura Zeiss
- lente objetivo Zeiss 125/16 lampara de hendidura
- obiettivo f=125 per lampada a fessura Zeiss
- lente frontale Zeiss 125/16 lampada a fessura
- Zeiss buy spare parts

# Related URLs:
- Markdown po polsku: https://www.serwismikroskopowy.pl/part/99863.md
- Markdown auf Deutsch: https://www.mikroskopteile.de/part/99863.md
- Gallery of all photos of this part: https://www.microscopeparts.eu/gallery/99863-zeiss-slit-lamp-f-125-microscope-objective-f-125-with-47mm-mounting-thread
- Media manifest of this part (photos + videos, for AI/RAG): https://www.microscopeparts.eu/part/99863.media.md
- Representative photo: https://www.microscopeparts.eu/photo/zeiss-slit-lamp-f-125-microscope-objective-f-125-with-47mm-mounting-thread-99863-2
- Representative video: https://www.microscopeparts.eu/play/99863-1
- Other parts from category Objective: https://www.microscopeparts.eu/objective
- More Objective removed from microscope Zeiss Slit Lamp f=125: https://www.microscopeparts.eu/objective/from/zeiss/slit-lamp-f-125
- More Objective compatible with microscope Zeiss Slit Lamp f=125: https://www.microscopeparts.eu/objective/for/zeiss/slit-lamp-f-125
- More Objective removed from microscopes Zeiss: https://www.microscopeparts.eu/objective/from/zeiss
- More Objective compatible with microscopes Zeiss: https://www.microscopeparts.eu/objective/for/zeiss

# 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: 2026-10-11