# Part name:
Lomo PLAN 9x 0.20 microscope objective (RMS  / 1991)

# Original page URL:
https://www.microscopeparts.eu/part/lomo-biolam-plan-9x-0-20-microscope-objective-rms-1991-90737

# 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:
Objective

# Description and specifications:
RMS microscope objective with 9x magnification and plan achromatic correction.

Manufacturer: Lomo
Model: PLAN 9x0.20
Magnification: 9x
Correction: Plan Achromat
Numerical Aperture: 0.20
Tube Length: 160 mm
Focal Length: 33 mm
Immersion: No
Thread: RMS
YOM: 1991

NOTE - Although this is a plan achromatic objective, it does not require dedicated plan compensation optics (e.g., special eyepieces). This makes it very popular for macro photography ? it has a 9:1 magnification ratio, no distortion at the image edge, and operates in direct projection mode.

# Examples of use
- If you want to upgrade your Lomo microscope with original parts
- If you need a 9x objective lens for a flat image for Lomo, Carl Zeiss Jena, PZO, IOR, or other microscopes requiring 33mm and 160mm lenses
- If you have a Lomo microscope from 1991 (the serial number begins with "91") and want lenses from that era
- If you're looking for an interesting lens for macro photography and photo stacking.

# Removed from microscope:
Lomo Biolam

# Also compatible with the following microscopes:
- Lomo Biolam
- Lomo Biolam D11
- Lomo MBI-1
- Lomo MBR-3
- IOR ML-4M
- Carl Zeiss Jena Lg
- Carl Zeiss Jena Lumipan
- Lomo MBB-1

# Names, descriptions, terms, and search contexts under which this part is searched.
- Lomo Biolam microscope repair parts
- mikroskop
- microscope
- Lomo Biolam
- Bresser Biolam
- Carl Zeiss Jena Lumipan
- Carl Zeiss Jena Lg
- IOR ML-4M
- Lomo Plan 9x objective
- Lomo Plan 9-fach Objektiv
- obiektyw
- plan achromat
- macrophotography
- super makro
- stackowanie zdjęć
- Lomo 9
- Lomo buy spare parts

# Related URLs:
- Markdown po polsku: https://www.serwismikroskopowy.pl/part/90737.md
- Markdown auf Deutsch: https://www.mikroskopteile.de/part/90737.md
- Gallery of all photos of this part: https://www.microscopeparts.eu/gallery/90737-lomo-biolam-plan-9x-0-20-microscope-objective-rms-1991
- Media manifest of this part (photos + videos, for AI/RAG): https://www.microscopeparts.eu/part/90737.media.md
- Representative photo: https://www.microscopeparts.eu/photo/lomo-biolam-plan-9x-0-20-microscope-objective-rms-1991-90737-2
- Other parts from category Objective: https://www.microscopeparts.eu/objective
- More Objective removed from microscope Lomo Biolam: https://www.microscopeparts.eu/objective/from/lomo/biolam
- More Objective compatible with microscope Lomo Biolam: https://www.microscopeparts.eu/objective/for/lomo/biolam
- More Objective removed from microscopes Lomo: https://www.microscopeparts.eu/objective/from/lomo
- More Objective compatible with microscopes Lomo: https://www.microscopeparts.eu/objective/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: 2026-07-31