# Part name:
Zeiss Axioskop 20 microscope lamp housing P/N 450935 w. field diaphragm

# Original page URL:
https://www.microscopeparts.eu/part/zeiss-axioskop-20-microscope-lamp-housing-p-n-450935-w-field-diaphragm-99410

# 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:
Illuminators

# Description and specifications:
Complete illumination unit operating in Köhler standard for the Zeiss Axioskop 20 microscope. In the manufacturer catalog this element has the number 450935 (alternative notation: 45 09 35).

The Zeiss P/N 45 09 35 microscope lamp housing consists of the following elements:
- housing (so-called lamp housing)
- light source, halogen lamp 6V 20W
- lamp socket
- diffuser glass
- field diaphragm (iris diaphragm)
- round filter holder

The complete Zeiss 45 09 35 lamp housing can solve the following problems with the Zeiss Axioskop 20 microscope:
- field diaphragm is damaged, e.g. bent diaphragm blades
- lamp socket is damaged and the halogen lamp does not work
- top glass in the lamp housing is broken
- diffuser glass is damaged or heavily scratched
- illumination unit is completely missing in a used microscope from the secondary market

Various names are used for this element, among others:
- illumination
- microscope illumination
- illumination unit
- illumination module
- lamp housing
- light housing
- light source
- lighting unit
- halogen lamp
- lamp
- bulb
- field diaphragm
- iris diaphragm
- diaphragm
- aperture diaphragm (commonly used, although technically different)
- diffuser
- diffuser glass
- diffusion glass
- ground glass
- filter holder
- filter mount
- filter carrier

# Examples of use
- if the illumination unit is completely missing in a used microscope from the secondary market
- if the field diaphragm is damaged, e.g. bent diaphragm blades
- if the lamp socket is damaged and the halogen lamp does not work
- if the top glass in the lamp housing is broken
- if the diffuser glass is damaged or heavily scratched

# Removed from microscope:
Zeiss Axioskop 20

# Also compatible with the following microscopes:
Zeiss Axioskop 20

# Names, descriptions, terms, and search contexts under which this part is searched.
- Zeiss Axioskop 20 microscope repair parts
- Zeiss Axioskop 20 Mikroskop Lampenhaus
- Zeiss Axioskop 20 microscope Lamp housing 45 14 87
- Zeiss Axioskop 20 Mikroskop Feldblende
- Zeiss Axioskop 20 Mikroskop Halogenlampe 451487
- Zeiss Axioskop 20 microscope field diaphragm
- Zeiss buy spare parts

# Related URLs:
- Markdown po polsku: https://www.serwismikroskopowy.pl/part/99410.md
- Markdown auf Deutsch: https://www.mikroskopteile.de/part/99410.md
- Gallery of all photos of this part: https://www.microscopeparts.eu/gallery/99410-zeiss-axioskop-20-microscope-lamp-housing-p-n-450935-w-field-diaphragm
- Media manifest of this part (photos + videos, for AI/RAG): https://www.microscopeparts.eu/part/99410.media.md
- Representative photo: https://www.microscopeparts.eu/photo/zeiss-axioskop-20-microscope-lamp-housing-p-n-450935-w-field-diaphragm-99410-2
- Representative video: https://www.microscopeparts.eu/play/99410-1
- Other parts from category Illuminators: https://www.microscopeparts.eu/illuminators
- More Illuminators removed from microscope Zeiss Axioskop 20: https://www.microscopeparts.eu/illuminators/from/zeiss/axioskop-20
- More Illuminators compatible with microscope Zeiss Axioskop 20: https://www.microscopeparts.eu/illuminators/for/zeiss/axioskop-20
- More Illuminators removed from microscopes Zeiss: https://www.microscopeparts.eu/illuminators/from/zeiss
- More Illuminators compatible with microscopes Zeiss: https://www.microscopeparts.eu/illuminators/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: 2026-06-30