Home page of the microscope service parts, repair and spare parts online catalog - Sermik-Oplatek Mikroskopservice Dresden f.n.n.Z

Description of this part for the microscope.

37 mm)
- four phase contrast objectives
- MIR-4 auxiliary microscope (23,2 mm eyepiece)
- wooden case

Four phase contrast objectives:
- Lomo 10x 0.30 F
- Lomo 20x 0.40 F
- Lomo 40x 0.65 F
- Lomo MI 90x 1.25 F
- thread: RMS
- tube length: 160 mm
- focal length: 33 mm

Can be used with, among others: With Lomo microscopes:
- Biolam (Bresser Biolam)
- Biolam I
- MBB 1A
- MBR
- MBI
- MBI-11
- and others

This set is often used with Carl Zeiss Jena microscopes. To use it with microscopes from dozens of other brands, a condenser adapter is used, changing the condenser mounting diameter to 39.5 mm, and adapters changing the focal length of the objectives to 45 mm. It can then be used with PZO, Olympus, Nikon, Hund Wetzlar, Will Wetzlar, and most other microscopes with a TL of 160 mm.

Description of this part for the microscope.

mm
Thread: RMS
YOM: 1976

This lens was produced as an OEM for many vendors. It can be found without any manufacturer name (commonly found on Bresser Biolam microscopes), or with the "BoB" or "Fujiopt Tokyo" logo engraved on it.

Description of this part for the microscope.

Bresser Biolam microscopes
Magnification: 3.7x
Numerical Aperture: 0.11
Tube Length: 160 mm
Focal Length: 33 mm
Thread: RMS

Due to its superior optical quality, this objective is used for macro photography, especially for stacking images.

Description of this part for the microscope.

use of Lomo lenses with an RMS thread and a TL of 190mm (most often EPI lenses). The mount is a 41.5mm dovetail, the Carl Zeiss Jena standard.

Description of this part for the microscope.

mm
Thread: RMS
YOM: 1985

Description of this part for the microscope.

40x
Numerical aperture: 0.75
Tube length: 160 mm
Focal length: 33 mm
Immersion: yes, water immersion
Thread: RMS
YOM: 1991

Description of this part for the microscope.

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.

Description of this part for the microscope.

although incorrectly, referred to as "Lomo")
Model: 20 0,40
Magnification: 20x
Correction: Achromat
Numerical aperture: 0.40
Tube length: 160 mm
Focal length: 33 mm
Cover glass: 0.17 mm
Immersion: no
Thread: RMS
Serial number: 01234

It can be used with any microscope from any manufacturer. Of course, the microscope must be compatible, i.e. support RMS objectives, TL=160 mm and FL=33 mm.

After installing a 12 mm adapter, this combination of adapter and objective will function as an objective with FL=45 mm.

This objective is attractive mainly to collectors because:
- there are very few microscope objectives with the LZOS logo on the secondary market
- the objective has a so-called "golden serial number": 01234

Description of this part for the microscope.

objective:
Manufacturer: LOMO, Russia (ЛОМО)
Magnification: 40x
Numerical aperture N.A.: 0.65
Serial number: starts with "92"
Year of manufacture: 1992
Tube length: 160 mm
Parfocal length: 33 mm - so-called short barrel objective
Cover glass: yes, 0.17 mm thick
Immersion: no - this is a dry objective
Specimen protection: yes, the objective has a spring-loaded front mount that prevents breaking the slide with the specimen
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 of manufacture. 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. Very often this objective is 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 manufactured adapters from the RMS thread to M27. Thanks to them, this objective was used on LOMO Biolam I and LOMO Biolam M microscopes. Users of Carl Zeiss Axio series microscopes with the M27 thread took advantage of this as well and used these adapters too.

LOMO objectives are very popular among users of microscopes from other manufacturers. Because of the historical ties, owners of Carl Zeiss Jena microscopes regard them as a natural replacement for the German objectives.

This objective fits practically any microscope of any manufacturer, as long as it has an RMS thread and takes objectives with a 160 mm tube length and a 33 mm parfocal length (or 37 / 45 mm with a suitable adapter). Several example microscopes are listed in the "Compatibility" section, but this is not a complete list.

Description of this part for the microscope.

Basic parameters of this objective:
Manufacturer: LOMO, (ЛОМО, former Soviet Union)
Magnification: 40x
Numerical aperture N.A.: 0.65
Serial number: starts with "89"
Year of manufacture: 1989
Tube length: 160 mm
Parfocal length: 33 mm - so-called short barrel objective
Cover glass: yes, 0.17 mm thick
Immersion: no - this is a dry objective
Specimen protection: yes, the objective has a spring-loaded front mount that prevents breaking the slide with the specimen
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 of manufacture. 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. Very often this objective is 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 manufactured adapters from the RMS thread to M27. Thanks to them, this objective was used on LOMO Biolam I and LOMO Biolam M microscopes. Users of Carl Zeiss Axio series microscopes with the M27 thread took advantage of this as well and used these adapters too.

LOMO objectives are very popular among users of microscopes from other manufacturers. Because of the historical ties, owners of Carl Zeiss Jena microscopes regard them as a natural replacement for the German objectives.

This objective fits practically any microscope of any manufacturer, as long as it has an RMS thread and takes objectives with a 160 mm tube length and a 33 mm parfocal length (or 37 / 45 mm with a suitable adapter). Several example microscopes are listed in the "Compatibility" section, but this is not a complete list.

Description of this part for the microscope.

Basic parameters of this objective:
Manufacturer: LOMO, (ЛОМО, former Soviet Union)
Magnification: 40x
Numerical aperture N.A.: 0.65
Serial number: starts with "80"
Year of manufacture: 1980
Tube length: 160 mm
Parfocal length: 33 mm - so-called short barrel objective
Cover glass: yes, 0.17 mm thick
Immersion: no - this is a dry objective
Specimen protection: yes, the objective has a spring-loaded front mount that prevents breaking the slide with the specimen
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 of manufacture. 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. Very often this objective is 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 manufactured adapters from the RMS thread to M27. Thanks to them, this objective was used on LOMO Biolam I and LOMO Biolam M microscopes. Users of Carl Zeiss Axio series microscopes with the M27 thread took advantage of this as well and used these adapters too.

LOMO objectives are very popular among users of microscopes from other manufacturers. Because of the historical ties, owners of Carl Zeiss Jena microscopes regard them as a natural replacement for the German objectives.

This objective fits practically any microscope of any manufacturer, as long as it has an RMS thread and takes objectives with a 160 mm tube length and a 33 mm parfocal length (or 37 / 45 mm with a suitable adapter). Several example microscopes are listed in the "Compatibility" section, but this is not a complete list.

Description of this part for the microscope.

Basic parameters of this objective:
Manufacturer: LOMO, (ЛОМО, former Soviet Union)
Magnification: 40x
Numerical aperture N.A.: 0.65
Serial number: starts with "79"
Year of manufacture: 1979
Tube length: 160 mm
Parfocal length: 33 mm - so-called short barrel objective
Cover glass: yes, 0.17 mm thick
Immersion: no - this is a dry objective
Specimen protection: yes, the objective has a spring-loaded front mount that prevents breaking the slide with the specimen
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 of manufacture. 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. Very often this objective is 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 manufactured adapters from the RMS thread to M27. Thanks to them, this objective was used on LOMO Biolam I and LOMO Biolam M microscopes. Users of Carl Zeiss Axio series microscopes with the M27 thread took advantage of this as well and used these adapters too.

LOMO objectives are very popular among users of microscopes from other manufacturers. Because of the historical ties, owners of Carl Zeiss Jena microscopes regard them as a natural replacement for the German objectives.

This objective fits practically any microscope of any manufacturer, as long as it has an RMS thread and takes objectives with a 160 mm tube length and a 33 mm parfocal length (or 37 / 45 mm with a suitable adapter). Several example microscopes are listed in the "Compatibility" section, but this is not a complete list.

Description of this part for the microscope.

Basic parameters of this objective:
Manufacturer: LOMO, (ЛОМО, former Soviet Union)
Magnification: 40x
Numerical aperture N.A.: 0.65
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: no - this is a dry objective
Specimen protection: yes, the objective has a spring-loaded front mount that prevents breaking the slide with the specimen
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 of manufacture. 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. Very often this objective is 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 manufactured adapters from the RMS thread to M27. Thanks to them, this objective was used on LOMO Biolam I and LOMO Biolam M microscopes. Users of Carl Zeiss Axio series microscopes with the M27 thread took advantage of this as well and used these adapters too.

LOMO objectives are very popular among users of microscopes from other manufacturers. Because of the historical ties, owners of Carl Zeiss Jena microscopes regard them as a natural replacement for the German objectives.

This objective fits practically any microscope of any manufacturer, as long as it has an RMS thread and takes objectives with a 160 mm tube length and a 33 mm parfocal length (or 37 / 45 mm with a suitable adapter). Several example microscopes are listed in the "Compatibility" section, but this is not a complete list.

Description of this part for the microscope.

Basic parameters of this objective:
Manufacturer: LOMO, (ЛОМО, former Soviet Union)
Magnification: 40x
Numerical aperture N.A.: 0.65
Serial number: starts with "75"
Year of manufacture: 1975
Tube length: 160 mm
Parfocal length: 33 mm - so-called short barrel objective
Cover glass: yes, 0.17 mm thick
Immersion: no - this is a dry objective
Specimen protection: yes, the objective has a spring-loaded front mount that prevents breaking the slide with the specimen
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 of manufacture. 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. Very often this objective is 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 manufactured adapters from the RMS thread to M27. Thanks to them, this objective was used on LOMO Biolam I and LOMO Biolam M microscopes. Users of Carl Zeiss Axio series microscopes with the M27 thread took advantage of this as well and used these adapters too.

LOMO objectives are very popular among users of microscopes from other manufacturers. Because of the historical ties, owners of Carl Zeiss Jena microscopes regard them as a natural replacement for the German objectives.

This objective fits practically any microscope of any manufacturer, as long as it has an RMS thread and takes objectives with a 160 mm tube length and a 33 mm parfocal length (or 37 / 45 mm with a suitable adapter). Several example microscopes are listed in the "Compatibility" section, but this is not a complete list.

Description of this part for the microscope.

Basic parameters of this objective:
Manufacturer: LOMO, (ЛОМО, former Soviet Union)
Magnification: 40x
Numerical aperture N.A.: 0.65
Serial number: starts with "73"
Year of manufacture: 1973
Tube length: 160 mm
Parfocal length: 33 mm - so-called short barrel objective
Cover glass: yes, 0.17 mm thick
Immersion: no - this is a dry objective
Specimen protection: yes, the objective has a spring-loaded front mount that prevents breaking the slide with the specimen
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 of manufacture. 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. Very often this objective is 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 manufactured adapters from the RMS thread to M27. Thanks to them, this objective was used on LOMO Biolam I and LOMO Biolam M microscopes. Users of Carl Zeiss Axio series microscopes with the M27 thread took advantage of this as well and used these adapters too.

LOMO objectives are very popular among users of microscopes from other manufacturers. Because of the historical ties, owners of Carl Zeiss Jena microscopes regard them as a natural replacement for the German objectives.

This objective fits practically any microscope of any manufacturer, as long as it has an RMS thread and takes objectives with a 160 mm tube length and a 33 mm parfocal length (or 37 / 45 mm with a suitable adapter). Several example microscopes are listed in the "Compatibility" section, but this is not a complete list.

Description of this part for the microscope.

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 "93"
Year of manufacture: 1993
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.

Description of this part for the microscope.

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 "92"
Year of manufacture: 1992
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.

Description of this part for the microscope.

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 "91"
Year of manufacture: 1991
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.

Description of this part for the microscope.

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 "85"
Year of manufacture: 1985
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.

Description of this part for the microscope.

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.

Description of this part for the microscope.

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 "74"
Year of manufacture: 1974
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.

Description of this part for the microscope.

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 "73"
Year of manufacture: 1973
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.

Description of this part for the microscope.

objective (model 8 0.20) is frequently used for macro photography with a microscope or a camera (via an RMS adapter or a bellows). Although it is an achromat, it renders fine detail very sharply and performs well in focus stacking. It complements a set together with the LOMO 3.7x, Carl Zeiss Jena Semiplan 6.3x and Nikon M Plan 10x.

Basic parameters of this objective:
Manufacturer: Lomo, USSR (ЛОМО)
Magnification: 8x
Correction: achromatic
Marking on the objective: 8 0.20
Numerical aperture N.A.: 0.20
Serial number: starts with "72"
Year of manufacture: 1972
Tube length: 160 mm
Parfocal length: 33 mm - so-called short barrel objective
Cover glass: not critical - objectives with such low magnification work both with and without a cover glass
Immersion: no (dry objective)
Thread: RMS

Important - this objective is suitable for direct projection photography, as it does not require plan-compensating optics.

A microscope objective with such low magnification (with a 160 mm tube length it gives an 8:1 reproduction ratio) is used, among other things, for observing or photographing:
- insects
- minerals
- inclusions in amber
- handwriting
- micro shells (micromollusks)
- and much more

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.

Description of this part for the microscope.

objective (model 8 0.20) is frequently used for macro photography with a microscope or a camera (via an RMS adapter or a bellows). Although it is an achromat, it renders fine detail very sharply and performs well in focus stacking. It complements a set together with the LOMO 3.7x, Carl Zeiss Jena Semiplan 6.3x and Nikon M Plan 10x.

Basic parameters of this objective:
Manufacturer: Lomo, USSR (ЛОМО)
Magnification: 8x
Correction: achromatic
Marking on the objective: 8 0.20
Numerical aperture N.A.: 0.20
Serial number: starts with "86"
Year of manufacture: 1986
Tube length: 160 mm
Parfocal length: 33 mm - so-called short barrel objective
Cover glass: not critical - objectives with such low magnification work both with and without a cover glass
Immersion: no (dry objective)
Thread: RMS

Important - this objective is suitable for direct projection photography, as it does not require plan-compensating optics.

A microscope objective with such low magnification (with a 160 mm tube length it gives an 8:1 reproduction ratio) is used, among other things, for observing or photographing:
- insects
- minerals
- inclusions in amber
- handwriting
- micro shells (micromollusks)
- and much more

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.

Description of this part for the microscope.

20) is frequently used for macro photography with a microscope or a camera (via an RMS adapter or a bellows). Although it is an achromat, it renders fine detail very sharply and performs well in focus stacking. It complements a set together with the LOMO 3.7x, Carl Zeiss Jena Semiplan 6.3x and Nikon M Plan 10x.

Basic parameters of this objective:
Manufacturer: Lomo, Russia (ЛОМО)
Magnification: 8x
Correction: achromatic
Marking on the objective: 8 0.20
Numerical aperture N.A.: 0.20
Serial number: starts with "92"
Year of manufacture: 1992
Tube length: 160 mm
Parfocal length: 33 mm - so-called short barrel objective
Cover glass: not critical - objectives with such low magnification work both with and without a cover glass
Immersion: no (dry objective)
Thread: RMS

Important - this objective is suitable for direct projection photography, as it does not require plan-compensating optics.

A microscope objective with such low magnification (with a 160 mm tube length it gives an 8:1 reproduction ratio) is used, among other things, for observing or photographing:
- insects
- minerals
- inclusions in amber
- handwriting
- micro shells (micromollusks)
- and much more

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.

Description of this part for the microscope.

Lomo, USSR (ЛОМО)
Magnification: 8x
Correction: achromatic
Marking on the objective: 8 0.20
Numerical aperture N.A.: 0.20
Serial number: starts with "66"
Year of manufacture: 1966
Tube length: 160 mm
Parfocal length: 33 mm - so-called short barrel objective
Cover glass: not critical - objectives with such low magnification work both with and without a cover glass
Immersion: no (dry objective)
Thread: RMS

The LOMO 8x objective (model 8 0.20) is frequently used for macro photography with a microscope or a camera (via an RMS adapter or a bellows). Although it is an achromat, it renders fine detail very sharply and performs well in focus stacking. It complements a set together with the LOMO 3.7x, Carl Zeiss Jena Semiplan 6.3x and Nikon M Plan 10x.

Important - this objective is suitable for direct projection photography, as it does not require plan-compensating optics.

A microscope objective with such low magnification (with a 160 mm tube length it gives an 8:1 reproduction ratio) is used, among other things, for observing or photographing:
- insects
- minerals
- inclusions in amber
- handwriting
- micro shells (micromollusks)
- and much more

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.

Description of this part for the microscope.

(ЛОМО)
Version: this is the OEM version of this objective; it was made for export and has no engraved manufacturer logo
Magnification: 90x
Correction: achromatic
Marking on the objective: A 90*1.25
Numerical aperture N.A.: 1.25
Tube length: 160 mm
Parfocal length: 33 mm - so-called short barrel objective
Cover glass: yes, 0.17 mm thick
Immersion: yes, oil
Specimen protection: yes, the objective has a spring-loaded front mount that prevents breaking the slide
Thread: RMS

LOMO exported its microscopes to Western Europe, where they were sold under the names Bresser Biolam / Bresser Erudit (mainly in Germany) and Zenith Biolam (in the UK). These microscopes often (but not always) came with special versions of the objectives without the "ЛОМО" engraving.

Apart from the missing manufacturer name, the export version also differs in the way the parameters are marked. On the LOMO version the marking read "МИ 90 1.25", where "МИ" is an abbreviation written in Cyrillic, corresponding to "MI" and meaning "oil immersion". The export version dropped the Cyrillic (and even the immersion information), and the marking changed to "A 90*1.25".

A note on the Bresser Erudit microscope: Bresser sold two different microscopes under this name. The first was a Lomo microscope labelled "Bresser Erudit", the second is the plastic, Chinese-made "Bresser Erudit DLX" microscope.
The microscope objective offered here fits the first of these two Erudit microscopes. A photo gallery of the first model can be found here: https://www.microscopeparts.eu/gallery/lomo-erudit-microscopes-207.

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.

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.

Description of this part for the microscope.

microscope or a camera (via an RMS adapter or a bellows). Although it is an achromat, it renders fine detail very sharply and performs well in focus stacking. It complements a set together with the LOMO 3.7x, Carl Zeiss Jena Semiplan 6.3x and Nikon M Plan 10x.

Basic parameters of this objective:
Manufacturer: Lomo, Russia (ЛОМО)
Magnification: 8x
Correction: achromatic
Marking on the objective: 8 0.20
Numerical aperture N.A.: 0.20
Serial number: starts with "91"
Year of manufacture: 1991
Tube length: 160 mm
Parfocal length: 33 mm - so-called short barrel objective
Cover glass: not critical - objectives with such low magnification work both with and without a cover glass
Immersion: no (dry objective)
Thread: RMS

Important - this objective is suitable for direct projection photography, as it does not require plan-compensating optics.

A microscope objective with such low magnification (with a 160 mm tube length it gives an 8:1 reproduction ratio) is used, among other things, for observing or photographing:
- insects
- minerals
- inclusions in amber
- handwriting
- micro shells (micromollusks)
- and much more

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.

Description of this part for the microscope.

the OEM version of this objective; it was made for export and has no engraved manufacturer logo
Magnification: 40x
Correction: achromatic
Marking on the objective: 40 0,65
Numerical aperture N.A.: 0,65
Tube length: 160 mm
Parfocal length: 33 mm - so-called short barrel objective
Cover glass: yes, 0.17 mm thick
Immersion: no
Specimen protection: yes, the objective has a spring-loaded front mount that prevents breaking the slide
Thread: RMS

LOMO exported its microscopes to Western Europe, where they were sold under the names Bresser Biolam / Bresser Erudit (mainly in Germany) and Zenith Biolam (in the UK). These microscopes often (but not always) came with special versions of the objectives without the "ЛОМО" engraving.

A note on the Bresser Erudit microscope: Bresser sold two different microscopes under this name. The first was a Lomo microscope labelled "Bresser Erudit", the second is the plastic, Chinese-made "Bresser Erudit DLX" microscope.
The microscope objective offered here fits the first of these two Erudit microscopes. A photo gallery of the first model can be found here: https://www.microscopeparts.eu/gallery/lomo-erudit-microscopes-207.

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.

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.

Description of this part for the microscope.

objective:
Manufacturer: Lomo (ЛОМО)
Magnification: 40x
Correction: achromatic
Engraving on the objective: 40 0,65 Ф-2 ЛОМО
Numerical aperture N.A.: 0,65
Working distance: 0,55 mm
Tube length: 160 mm
Parfocal length: 33 mm - a so-called short barrel objective
Cover glass: yes, 0,17 mm thick
Phase contrast: yes, type F-2 (Ф-2), which means there are two phase rings inside the objective
Immersion: no (dry objective, sometimes called an "air immersion" objective)
Specimen protection: no, the objective has no spring-loaded mechanism
Thread: RMS
Work in brightfield without phase contrast: possible, but even the manufacturer states in the manual that the image quality is worse than with an objective without phase rings inside

A very important note: two phase rings inside an objective bring to mind variable phase contrast (PhZ at PZO or PhV at Carl Zeiss Jena). With LOMO, however, this is rather something like a "second type of positive phase contrast". LOMO states in the manual (https://laboratorium.dp.ua/item/68) that one image is obtained when light passes through both rings (with the condenser iris diaphragm open) - and a different one when the diaphragm is closed far enough that light no longer reaches the outer, wide ring and only the inner ring works. The manufacturer recommends viewing the specimen in both modes, because together they give a more reliable idea of its structure. The contrast stays positive (thicker or denser parts of the specimen appear darker against a bright background), and both modes differ from work with the single-ring "Ф" objectives and the LOMO KF-4 condenser (ЛОМО KФ-4), where both the objective and the condenser diaphragm have only one ring. So the resulting effect does change - but this is not variable phase contrast; the change is stepwise (either-or), not continuous.

The objective presented here fits the LOMO KF-5 condenser (ЛОМО KФ-5). That condenser has a mounting diameter of 37 mm and is very often used on microscopes from other makers, among them Carl Zeiss Jena and Olympus (especially Olympus CH). With a suitable build-up ring fitted (3D printed, for example), this condenser is commonly used in microscopes with a 39,5 mm condenser seat as well. The instructions for setting up LOMO KF-5 phase contrast can be found here: https://scopica.ru/proj/ustroystvo-dlya-nablyudeniya-metodom-fazovogo-kontrasta-kf-5/

This is a so-called short barrel objective, with a parfocal length of 33 mm. It is very commonly mounted on a 12 mm extension, which allows it to be used in microscopes that require objectives of 45 mm length. Professional adapters with protective optics, metal adapters and the popular 3D printed DIY solutions all work here.

LOMO objectives are very popular with owners of microscopes from other makers. Because of the historical links, owners of Carl Zeiss Jena microscopes treat them as an obvious substitute for those German objectives.

This objective fits practically any microscope from any maker, provided it has an RMS thread and accepts objectives with TL=160 mm and a parfocal length of 33 mm (or 37 / 45 mm if a suitable adapter is used). A few such microscopes are listed in the "compatibility" section, but that is not a complete list.