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.

33 mm
Thread: RMS
Variant: glossy housing

This very old series of objectives was used in vintage MinO, M-100, and early versions of the MET-3 microscopes.

Together with the 12mm RMS extension adapter, this lens can be successfully used on newer PZO microscopes such as the MB-30, Studar, and Biolar.

Important: this lens can, of course, be used on microscopes from other manufacturers, as it has a classic RMS connection.

Description of this part for the microscope.

mm
Focal Length: 33 mm
Cover Glass: 0.17 mm
Immersion: no
Thread: RMS

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, FL=33 mm.

After installing the 12 mm adapter, this objective lens will have FL = 45 mm.

Description of this part for the microscope.

Length: 33 mm
Cover Glass: 0.17 mm
Immersion: no
Thread: RMS

It can be used with any microscope from any manufacturer. The microscope must be compatible, meaning it supports RMS objectives, TL = 160 mm, FL = 33 mm.

After installing the 12 mm adapter, this objective lens will have FL = 45 mm.

Description of this part for the microscope.

microscope from any manufacturer that allows the use of eyepieces with a mounting diameter of 23.2 mm.

Description of this part for the microscope.

eyepieces can be used with microscopes from any manufacturer, as long as the microscope supports eyepieces with a mounting diameter of 23.2 mm.

Description of this part for the microscope.

microscopes from any manufacturer, as long as the microscope supports eyepieces with a mounting diameter of 23.2 mm.

Description of this part for the microscope.

socket

This is an external electric illuminator for older type microscopes that use a mirror as a light source.

Mirror microscopes may have the mirror mounted vertically or horizontally, and this lamp (this illuminator) is compatible with both mounting types, as it has two mounting pins.

Note that this illuminator uses bulbs with a standard E14 socket, so an LED bulb can also be installed.

The PZO LM-2 illuminator has a place for a round filter with a diameter of 32 mm. Typically, the following are placed there:
- a diffuser to achieve uniform illumination
- a blue filter to convert the yellow, warm bulb light into a more white (cool) light
- or a blue diffuser to achieve both effects at the same time

Note - the PZO LM-2 illuminator is a so-called "simple" illuminator and does not allow achieving Koehler illumination. An external microscope lamp operating in the Koehler standard is called PZO LMK.

This is a universal microscope lamp and can be used with microscopes from many manufacturers.

Description of this part for the microscope.

Manufacturer: Lomo
Magnification: 20x
Model: 20 0.40 P
Numerical aperture: 0.40
Tube length: 160 mm
Focal length: 33 mm
Cover glass: yes, 0.17 mm
Thread: RMS + Pol adapter
Info: P = Polarization

This is an objective designed for transmitted light work with a cover glass.

The RMS thread objective is mounted on a dedicated slide-in adapter that allows it to be used in Lomo MIN series and Lomo Polam series microscopes. Of course, the objective can be unscrewed and another objective can be mounted in the adapter.

The objective itself, once removed from the adapter, is a standard objective that can be used in virtually any microscope with an RMS thread. It is a so-called "short objective" (focal length 33 mm). When a 12 mm adapter is added, the total length becomes 45 mm, allowing it to be used with newer microscopes from any manufacturer.

Lomo polarization objectives with RMS thread can be installed in an RMS-M27 adapter and then used in microscopes such as Lomo Biolam M, Lomo Biolam I, Lomo Lumam, or Lomo ML-2. I have also frequently seen such objectives used in Zeiss Axio series microscopes with M27 thread.

The Pol adapter also allows precise centering of the objective relative to the entire optical path - this requires tools (keys / tools).

Info: I have repeatedly seen information stating that this RMS-Pol adapter is compatible with Leitz Wetzlar polarization microscopes - however, I have not personally verified this.

In summary, this objective is dedicated to Lomo MIN-1, MIN-4, MIN-5, MIN-6, MIN-8, Lomo Polam R-113, Polam L-211, Polam L-213, Polam R-311, Polam LMPR microscopes - but it is practically compatible with any microscope from any manufacturer that supports 160 mm objectives.

Description of this part for the microscope.

Note - this model of microscope objective is very often used for macro photography and focus stacking. More information on this can be found at the end of this description.

Manufacturer: Lomo
Magnification: 9x
Model: PLANACHR 9x0.20 P
Numerical aperture: 0.20
Optical correction: planachromatic (flat field)
Tube length: 160 mm
Focal length: 33 mm
Cover glass: optional, can be used but is not required
Thread: RMS + Pol adapter
Info: P = Polarization

The RMS thread objective is mounted on a dedicated slide-in adapter that allows it to be used in Lomo MIN series and Lomo Polam series microscopes. Of course, the objective can be unscrewed and another objective can be mounted into the adapter.

The objective itself, once removed from the adapter, is a standard objective that can be used in virtually any microscope with an RMS thread. It is a so-called "short objective" (focal length 33 mm). When a 12 mm adapter is added, the total length becomes 45 mm, allowing it to be used with newer microscopes from any manufacturer.

Lomo polarization objectives with RMS thread can be installed in an RMS-M27 adapter and then used in microscopes such as Lomo Biolam M, Lomo Biolam I, Lomo Lumam, or Lomo ML-2. I have also frequently seen such objectives used in Zeiss Axio series microscopes with M27 thread.

The Pol adapter also allows precise centering of the objective relative to the entire optical path - this requires tools (keys / tools).

Info: I have repeatedly seen information stating that this RMS-Pol adapter is compatible with Leitz Wetzlar polarization microscopes - however, I have not personally verified this.

In summary, this objective is dedicated to Lomo MIN-1, MIN-4, MIN-5, MIN-6, MIN-8, Lomo Polam R-113, Polam L-211, Polam L-213, Polam R-311, Polam LMPR microscopes - but it is practically compatible with any microscope from any manufacturer that supports 160 mm objectives.

Additionally, this objective is very often used for macro photography even without a microscope. This objective does not require a cover glass and works in the "direct-projection" technique, meaning it can be connected directly to a camera without additional optics. This allows achieving a very high magnification scale and great depth of field across the entire image when using focus stacking. The fact that this is a polarization objective (i.e. stress-free optics without internal glass tensions) further improves image quality at high magnifications.

Description of this part for the microscope.

Note - this model of microscope objective is very often used for macro photography and focus stacking. More information on this can be found at the end of this description.

Manufacturer: Lomo
Magnification: 3,7x
Model: 3,7 0,11
Numerical aperture: 0.11
Tube length: 160 mm
Focal length: 33 mm
Cover glass: optional, can be used but is not required
Thread: RMS + Pol adapter
Info: P = Polarization

The RMS thread objective is mounted on a dedicated slide-in adapter that allows it to be used in Lomo MIN series and Lomo Polam series microscopes. Of course, the objective can be unscrewed and another objective can be mounted into the adapter.

The objective itself, once removed from the adapter, is a standard objective that can be used in virtually any microscope with an RMS thread. It is a so-called "short objective" (focal length 33 mm). When a 12 mm adapter is added, the total length becomes 45 mm, allowing it to be used with newer microscopes from any manufacturer.

Lomo polarization objectives with RMS thread can be installed in an RMS-M27 adapter and then used in microscopes such as Lomo Biolam M, Lomo Biolam I, Lomo Lumam, or Lomo ML-2. I have also frequently seen such objectives used in Zeiss Axio series microscopes with M27 thread.

The Pol adapter also allows precise centering of the objective relative to the entire optical path - this requires tools (keys / tools).

Info: I have repeatedly seen information stating that this RMS-Pol adapter is compatible with Leitz Wetzlar polarization microscopes - however, I have not personally verified this.

In summary, this objective is dedicated to Lomo MIN-1, MIN-4, MIN-5, MIN-6, MIN-8, Lomo Polam R-113, Polam L-211, Polam L-213, Polam R-311, Polam LMPR microscopes - but it is practically compatible with any microscope from any manufacturer that supports 160 mm objectives.

Additionally, this objective is very often used for macro photography even without a microscope. This objective does not require a cover glass and works in the "direct-projection" technique, meaning it can be connected directly to a camera without additional optics. This allows achieving a very high magnification scale and great depth of field across the entire image when using focus stacking. The fact that this is a polarization objective (i.e. stress-free optics without internal glass tensions) further improves image quality at high magnifications. Info: https://www.closeuphotography.com/lomo-3-7x-objective/2017/12/24/lomo-37x-011-microscope-objective

Description of this part for the microscope.

Poland
- Model: 5/0.15 160/-
- Alternative model marking: 5/0.15 160/0
- Magnification: 5x
- Numerical aperture N.A.: 0.15
- Correction: achromatic
- Focal length FL: 33 mm
- Tube length: 160 mm
- Cover glass: not required, but may be used
- Immersion: no (dry objective)
- Thread: RMS

This model has a metal housing with no lens at its end. Additionally, this housing can be unscrewed without affecting the operation of the objective - resulting in a relatively large working distance of more than 20 mm.

Three features:
- large working distance exceeding 20 mm
- exceptionally high numerical aperture N.A. of 0.15
- achromatic correction allowing direct projection use
make this relatively uncommon model very frequently chosen for macro photography using a microscope objective connected to a camera (focus stacking).

The fact that this objective has FL = 33 mm allows it to be used with microscopes from other manufacturers, including:
- Lomo Biolam
- Lomo MBB-1A
- Carl Zeiss Jena LG / Lu / Lumipan
- Carl Zeiss Jena Nf
- Olympus CH

Note! Please note that the FL = 33 mm focal length means that this objective DOES NOT FIT the following microscopes:
- PZO Biolar
- PZO Studar

Early versions of this objective (with low serial numbers) have the engraved marking 5/0.15 160/0 suggesting that the objective is intended for use without a cover glass. This is true, but more precisely this objective can work both without a cover glass and with one. In newer versions the engraving already reads 5/0.15 160/- where this "minus" already means "indifferent".

Description of this part for the microscope.

mm
Cover Glass: 0.17 mm
Immersion: no
Thread: RMS

It can be used with any microscope from any manufacturer. The microscope must be compatible, meaning it supports RMS objectives, TL = 160 mm, FL = 33 mm.

After installing the 12 mm adapter, this objective lens will have FL = 45 mm.

The fact that this objective has FL = 33 mm allows it to be used with microscopes from other manufacturers, including:
- Lomo Biolam
- Lomo MBB-1A
- PZO MB-10
- Olympus CH

Description of this part for the microscope.

Length: 33 mm
Cover Glass: 0.17 mm
Immersion: no
Thread: RMS

It can be used with any microscope from any manufacturer. The microscope must be compatible, meaning it supports RMS objectives, TL = 160 mm, FL = 33 mm.

After installing the 12 mm adapter, this objective lens will have FL = 45 mm.

The fact that this objective has FL = 33 mm allows it to be used with microscopes from other manufacturers, including:
- Carl Zeiss Jena Lg
- Carl Zeiss Jena Lumipan
- Lomo Biolam
- Lomo MBB-1A
- PZO MB-10
- Nikon S
- Olympus KHC

Description of this part for the microscope.

magnification is very often used as a projection eyepiece for microphotography.

This eyepiece works with any microscope from any manufacturer that allows the use of eyepieces with a mounting diameter of 23.2 mm.

Description of this part for the microscope.

intended for so-called "thick" objectives
Thread in the cap: no, the cap of this objective case does not contain a thread for attaching an RMS objective

This objective case can be used to store so-called "short" objectives (DIN 33 mm), longer objectives (DIN 37 mm), and long objectives (DIN 45 mm), provided they are not the so-called "thick" type.

For PZO objectives, it can accommodate all standard achromatic objectives as well as all phase contrast objectives. Some unusual PZO microscope objectives do not fit inside, for example the 100x PI objective (with a red ring).

Various names are used on the secondary market for a microscope objective case, including:
- objective case
- microscope objective case
- objective container
- microscope objective container
- objective storage case
- objective storage container
- objective box
- objective storage box
- protective objective case
- objective lens case
- objective lens container
- dust protection case
- transport case for microscope objectives
- microscope objective holder case
- storage canister for microscope objectives

Each case has the PZO logo on its cap. Caps may be black, white, or grey.

Although this case is of greatest interest to users and collectors of objectives made by the Polish manufacturer PZO, it can of course be used to store objectives from any manufacturer.

Description of this part for the microscope.

any microscope from any manufacturer that allows the use of eyepieces with a mounting diameter of 23.2 mm.

The company "Dr. G. Schuchardt Göttingen" did not and does not produce microscopes. Previously, it primarily sold microscopes manufactured by Hertel & Reuss and Will Wetzlar under its own brand.

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.

2 mm

Because this is important, I will write it again: this is a single eyepiece, not a pair of eyepieces.

This is a solution for people who:
- either have a pair of these eyepieces, but one of them needs to be replaced
- or have a microscope with a monocular head

For Will Wetzlar microscopes, eyepieces from practically any manufacturer can be used, provided that they are designed for a finite tube length system and have a mounting diameter of 23.2 mm. However, many users appreciate having original parts.

This eyepiece also works the other way around - it fits almost any microscope from any manufacturer that allows the use of eyepieces with a mounting diameter of 23.2 mm. Users of microscopes from many manufacturers are happy to choose German eyepieces because of their high quality. I have included some examples in the "compatibility" section, but this is definitely not a complete list.

Description of this part for the microscope.

2 mm

Because this is important, I will write it again: this is a single eyepiece, not a pair of eyepieces.

This is a solution for people who:
- either have a pair of these eyepieces, but one of them needs to be replaced
- or have a microscope with a monocular head

For Will Wetzlar microscopes, eyepieces from practically any manufacturer can be used, provided that they are designed for a finite tube length system and have a mounting diameter of 23.2 mm. However, many users appreciate having original parts.

This eyepiece also works the other way around - it fits almost any microscope from any manufacturer that allows the use of eyepieces with a mounting diameter of 23.2 mm. Users of microscopes from many manufacturers are happy to choose German eyepieces because of their high quality. I have included some examples in the "compatibility" section, but this is definitely not a complete list.

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.

20x
Correction: Fluotar (other names: Fluor and fluorite)
Numerical aperture N.A.: 0.60
Tube length: 160 mm
Parfocal length: 33 mm
Cover glass: yes, 0.17 mm thick
Immersion: no (dry objective)
Thread: RMS

The objective comes in its original protective case marked "Wild Heerbrugg Switzerland".

Fluotar is the name Wild Heerbrugg used for its fluorite objectives, i.e. semi-apochromats - their lenses contain fluorite or glass with similar optical properties. A standard achromat corrects chromatic errors for only two colors (red and blue), so colored fringes may appear along the edges of objects. An apochromat corrects for three colors (red, green and blue) and represents the highest class of correction. The Fluotar sits between them - colored fringes are clearly smaller than with an achromat, although the correction is not as complete as with an apochromat. Fluorite also transmits ultraviolet light well, which is why objectives of this type were used in fluorescence microscopy.

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

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 a parfocal length of 33 mm (or 37 / 45 mm with a suitable adapter). Several example microscopes are listed in the "compatibility" section, but the list is not complete.