# Part name:
Lomo MMU-3 / MMY-3 Metallurgical Microscope Lamp House and EPI Condenser

# Original page URL:
https://www.microscopeparts.eu/part/lomo-mmu-3-mmy-3-metallurgical-microscope-lamp-house-and-epi-condenser-99517

# Part manufacturer:
Lomo

# Full manufacturer name:
Leningrad Optical Mechanical Association

# Other names of this manufacturer:
- LZOS
- TOMP
- WTOMP
- WOOMP
- GOMZ
- LOOMP
- Progres
- Progress
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:
Condensers

# Description and specifications:
Lamp house and EPI condenser for the Lomo MMU-3 / MMY-3 metallurgical microscope.

This part is a component of the illumination system of the Lomo MMU-3 microscope. The light source is inserted into this housing (the standard light source in this model is an 8V 20W bulb). The entire housing is covered with dense metal fins acting as a heat sink to dissipate heat. At the end of this housing there is a condenser lens collimating the light beam and a dovetail mount. This mount is used to attach the condenser to the next element of the illumination path, namely the holder with a slot for insertable sliders.

The model designation MMU-3 is written using the Latin alphabet. When written in Cyrillic, this designation looks like MMY-3, and people unfamiliar with the Cyrillic alphabet may therefore refer to this microscope model in that way.

Interestingly, the dovetail connection used here has a diameter of 41.5 mm, which is the standard mounting diameter for accessories (for example microscope heads and intermediate tubes) not only in Lomo microscopes, but also in Carl Zeiss Jena, Romanian IOR, Czechoslovak Meopta and many other microscopes. For this reason, this lamp housing is sometimes used as an EPI reflected light source in various Carl Zeiss Jena microscope modifications.

In the last photograph, on the scanned page from the instruction manual of the Lomo MMU-1 microscope, an arrow indicates which element is being offered and where it is located in the microscope, allowing this part to be identified unambiguously.

# Examples of use
- if you have a Lomo MMU-3 microscope with an incomplete illumination module and this particular element is missing or damaged
- if you would like to adapt this EPI condenser to another microscope, for example a Carl Zeiss Jena microscope
- if you are building your own DIY project and need a light beam collimator

# Removed from microscope:
Lomo MMU-3

# Also compatible with the following microscopes:
Lomo MMU-3

# Names, descriptions, terms, and search contexts under which this part is searched.
- Lomo MMU-3 microscope repair parts
- Lomo MMU-3 / MMY-3 EPI Auflicht Mikroskop Lampenhaus
- Lomo MMU-3 EPI Lichtkondensor
- Lomo MMY-3 metallurgical microscope lamp housing
- Lomo MMU-3 microscope EPI condenser
- Lomo buy spare parts

# Related URLs:
- Markdown po polsku: https://www.serwismikroskopowy.pl/part/99517.md
- Markdown auf Deutsch: https://www.mikroskopteile.de/part/99517.md
- Gallery of all photos of this part: https://www.microscopeparts.eu/gallery/99517-lomo-mmu-3-mmy-3-metallurgical-microscope-lamp-house-and-epi-condenser
- Media manifest of this part (photos + videos, for AI/RAG): https://www.microscopeparts.eu/part/99517.media.md
- Representative photo: https://www.microscopeparts.eu/photo/lomo-mmu-3-mmy-3-metallurgical-microscope-lamp-house-and-epi-condenser-99517-2
- Representative video: https://www.microscopeparts.eu/play/99517-1
- Other parts from category Condensers: https://www.microscopeparts.eu/condensers
- More Condensers removed from microscope Lomo MMU-3: https://www.microscopeparts.eu/condensers/from/lomo/mmu-3
- More Condensers compatible with microscope Lomo MMU-3: https://www.microscopeparts.eu/condensers/for/lomo/mmu-3
- More Condensers removed from microscopes Lomo: https://www.microscopeparts.eu/condensers/from/lomo
- More Condensers compatible with microscopes Lomo: https://www.microscopeparts.eu/condensers/for/lomo

# 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