This is description of this part:
LOMO (ЛОМО) oil immersion microscope objective, 90x magnification, made in in the Soviet Union (CCCP / USSR) in 1977 (i.e. before the dissolution of the USSR).
Basic parameters of this objective:
Manufacturer: Lomo, Russia (ЛОМО)
Magnification: 90x
Marking on the objective: МИ 90 1.25 (MI 90 1.25)
Numerical aperture N.A.: 1.25
Serial number: starts with "77"
Year of manufacture: 1977
Tube length: 160 mm
Parfocal length: 33 mm - so-called short barrel objective
Cover glass: yes, 0.17 mm thick
Immersion: yes, oil
Translation: "МИ" stands for "масляная иммерсия", i.e. "oil immersion"
Specimen protection: yes, the objective has a spring-loaded front mount that prevents breaking the slide
Thread: RMS
Why do I state the year of manufacture in the description of this objective? Older LOMO microscope parts (objectives, microscopes, heads) have the year of manufacture encoded in the serial number: the first two digits of the serial number are the year. Many users want to complete their microscope with parts made in the same year as the microscope itself.
This is a so-called short barrel objective with a parfocal length of 33 mm. It is very often mounted on a 12 mm extension, which allows it to be used in microscopes that require objectives with a 45 mm parfocal length. Professional adapters with protective optics, metal adapters and popular DIY 3D-printed adapters all work well here.
Fun fact: LOMO made adapters between the RMS and M27 threads. Thanks to them, this objective was fitted to the Lomo Biolam I and Lomo Biolam M microscopes. Owners of Carl Zeiss Axio series microscopes with M27 thread also took advantage of this and used these adapters.
LOMO objectives are very popular with owners of microscopes from other manufacturers. Due to historical ties, owners of Carl Zeiss Jena microscopes regard them as an obvious replacement for the German objectives.
This objective fits practically any microscope from any manufacturer, as long as it has an RMS thread and accepts objectives with TL = 160 mm and 33 mm parfocal length (or 37 / 45 mm with a suitable adapter). Several example microscopes are listed in the "compatibility" section, but the list is not complete.
What is this part needed for?
- If you want to complete your Lomo microscope with original parts
- If you need a 90x / 100x immersion objective for Lomo, Olympus, Carl Zeiss Jena, PZO, Euromex or other compatible microscopes
- If you have a Lomo microscope from 1977 (serial number starting with "77") and want period-correct objectives in it
- What category does this part belong to?
- Objective [ link ] [More Objective]
- Who manufactures this part?
-
- Lomo - Leningrad Optical Mechanical Association [ link ] [More Lomo]
- LZOS
- TOMP
- WTOMP
- WOOMP
- GOMZ
- LOOMP
- Progres
- Progress
- What microscope does this part come from?
- Mikroskop Lomo Biolam [ link ] [More from Biolam]
- What microscopes or components is this part compatible with?
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- Lomo Biolam
- Bresser Biolam
- Bresser Erudit
- Lomo MPD-1
- Lomo Biolam-I
- Lomo MIN-8
- Lomo MBB-1
- Lomo Biolam-M
- Lomo Polam R-113
- Lomo Polam L-211
- Lomo M-9
- Lomo Biolam D11
- Lomo MIN-6
- Lomo MBR-3
- Lomo MIN-1
- Lomo Polam L-213
- Lomo MBP-1
- Lomo Erudit
- Lomo Biolam 70
- IOR ML-4M
- Hertel & Reuss Studio C
- Hertel & Reuss CN-fl
- Carl Zeiss Jena Lg
- Carl Zeiss Jena Lumipan
- Carl Zeiss Jena Nf
- Carl Zeiss Jena Laboval
- Carl Zeiss Jena Eduval
- Olympus CH
- Olympus KHC
- Olympus HSC
- Olympus EH
- Olympus FH
- Nikon S
- PZO M-440
- PZO MB-10
- Hertel & Reuss Studio II
- Euromex CSL
- Eschenbach Kolleg SH45
- SWIFT (Japan) M2240
- FOZ Opta Junat-2P-1
- FOZ Opta UShM-1
- FOZ Opta Opta UM-301
- Vickers M15
- Lomo Biolam microscope repair parts
- LOMO 90x 1.25 oil objective YOM 1977
- LOMO 90x Öl Objektiv Baujahr 1977
- LOMO 90x objective serial number 77
- LOMO Biolam 90x oil immersion objective replacement
- Bresser Biolam 90x Oel Immersion Objektiv Ersatz
- ЛОМО МИ 90 1.25 RMS 160 objective
- LOMO MBB-1A 90x Objektiv
- Carl Zeiss Jena 90x Öl Objektiv Ersatz
- LOMO 90x short barrel objective 45 mm adapter
- Biolam 90x Objektiv Frontlinse zerkratzt
- Olympus KHC 90x objective fungus - replacement
- Łomo obiektyw 90x immersja olejowa 1977
- Lomo buy spare parts