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.

Soviet Union)
Description: PR K 3x
Magnification: 3x
Type: PR - Projection/Projection Eyepiece (Microphotography)
Type: K - compensating eyepiece
Mounting Diameter: 23.2 mm

Projection eyepieces are special microscope eyepieces with low magnification. They are used for projection - projecting the microscopic image onto the sensor of a camera or digital camera.
Many microscope or trinocular head photo tubes have a space for mounting a projection eyepiece.

This projection eyepiece can be used with any microscope from any manufacturer.

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.

1 microscopes have simple microscope stages with grips for holding the specimen. Therefore, at magnifications above 400x, manually manipulating the slide with the specimen becomes very difficult. XY cross stages are used for this purpose, for example, to move the specimen very precisely at 900x magnification with oil immersion.

This is not a cheap plastic cross stage - it is a well-made Lomo design, very popular on the used microscope market.

NOTE - if the mounting pin spacing matches, this cross stage can be mounted on stages from virtually any manufacturer.

Description of this part for the microscope.

removed from a MBI-1 microscope. If (unfortunately) you decide to 3D print it, you can find it here .

Description of this part for the microscope.

state.

Of course, the oil is usable, but I think this item has more collector's value.

Description of this part for the microscope.

fluorescence illumination.

Manufacturer: LOMO
Model: WI 40 0.75 L
Magnification: 40x
Numerical aperture: 0.75
Optical correction: achromat, optimized for fluorescence microscopy
Tube length: 160 mm
Focal length: approx. 33 mm
Immersion: water
Designation: L = luminescence
Thread: RMS
Year of manufacture: 1974

Despite the L designation, the objective can of course also be used with standard transmitted light illumination.

LOMO objectives marked with L luminescence differ from non-marked versions by:
- improved transmission in the UV and blue spectral range
- reduced autofluorescence of optical glass
- no or strongly reduced use of organic adhesives in the optical assembly

Description of this part for the microscope.

correction for fluorescence illumination.

Manufacturer: Lomo
Model: WI 30x0.90 L
Manufacturer code: O5V-30L
Magnification: 30x
Numerical aperture: variable from 0.65 to 0.90
Iris diaphragm: yes, built-in
Optical correction: achromat + fluorescence
Tube length: 160 mm
Focal length: 33 mm
Immersion: yes, water
Cover glass: yes, 0.17 mm
Marking: "L" = luminescence
Thread: RMS
Year of manufacture: 1974

This is a rare, professional microscope objective with a very wide range of applications. Main features that make this objective exceptional:
- Water immersion is preferred by many users over oil immersion
- Very high numerical aperture (up to 0.90) provides high-resolution images
- Built-in iris diaphragm allows adjustment of the aperture

Despite the "L" marking, the objective can of course also be used with standard illumination.

LOMO objectives with the "L" luminescence marking differ from those without this symbol by:
- Improved transmission in the UV and blue spectral range
- Lower glass autofluorescence
- No or strongly reduced use of organic adhesives

Description of this part for the microscope.

correction for fluorescence illumination.

Manufacturer: Lomo
Model: APO-WI 60x1.0 D=0 L
Magnification: 60x
Numerical aperture: 1.0
Correction: Apochromat + fluorescence
Tube length: 160 mm (?)
Focal length: 33 mm (?)
Immersion: water
Cover slip: no (!)
Marking: "L" = luminescence
Marking: "D=0" = use without cover slip
Thread: RMS
Year of manufacture: 1975

Apochromatic objectives are known for exceptional color fidelity, significantly better than achromatic objectives.

This objective is extremely rare on the secondary market and highly professional. Key features:
- Water immersion is preferred by many users over oil immersion
- Very high numerical aperture (1.0) provides high-resolution images
- Use without cover slip allows, for example, direct placement of the objective inside a droplet with the sample to be observed

Despite the "L" marking, the objective can also be used with normal transmitted light illumination.

Lomo objectives marked "L" (luminescence) differ from those without this symbol by:
- Improved UV and blue light transmission
- Lower autofluorescence of the glass
- No or reduced use of organic adhesives in the optical assembly

Description of this part for the microscope.

where the letter "H" corresponds to the Latin "N". This means that the model name written in the Latin alphabet is KON-3, where "KON" is simply an abbreviation of the word condenser.

Basic data:
- Element: Abbe microscope condenser
- Manufacturer: Lomo
- Manufacturer designation: KOH-3
- Numerical aperture: 1.2
- Numerical aperture with top lens removed: 0.3
- Mounting diameter: 37 mm
- Iris diaphragm: YES
- Wide-field lens: YES, with the possibility of moving it into / out of the light path
- filter holder: YES

This condenser also fits microscopes from other manufacturers (e.g. Meopta, Olympus, Carl Zeiss Jena and many others) with a 37 mm condenser mount.

Important: Although the mounting diameter of the KOH-3 condenser is 37 mm, the top lens slightly protrudes beyond the condenser body. For this reason, in some cases installation requires the following steps:
- unscrew the top lens
- install the condenser in the holder
- screw the top lens back in

Note: If you use this condenser with a microscope from a manufacturer other than Lomo, please note that:
- the filter holder is designed for filters with a diameter of 33 mm
- while most manufacturers use the 32 mm standard diameter
As a result, 32 mm filters cannot be used in the KOH-3 condenser without modification - they simply fall out because the holder diameter is too large.

Description of this part for the microscope.

11
- Lomo MBI-15
- Lomo Biolam M
- Lomo Biolam I

This holder allows mounting interchangeable stages, i.e. those that are not screwed to the microscope stand. Additionally, it has two centering screws.

In the photo gallery there are detailed photos of this element along with dimensions. In the last photo, an arrow indicates where this element is located in the microscope.

Description of this part for the microscope.

11
- Lomo MBI-15
- Lomo Biolam I
- Lomo Biolam M

On a mechanical microscope stage there are two such clamps, between which a microscope slide with a specimen is placed. These clamps - right and left are not identical. Here I present and offer the left clamp, which does not have a spring.

Note - different stage models use different clamps. In the photo gallery there are detailed photos of this element along with dimensions. In the last photo, the stage to which this clamp fits is shown. Additionally, an arrow indicates where this element is located, so it is clear which part of the microscope stage is being referred to.

These are the exact components marked with numbers 3 and 5 in the instruction manual sketch.
The scanned copy of the instructions comes from http://www.mikroskopfreunde-nordhessen.de/.

Description of this part for the microscope.

2
- Lomo MBI-11
- Lomo MBI-15
- Lomo Biolam I
- Lomo Biolam M

On a mechanical microscope stage there are two such clamps, between which a microscope slide with a specimen is placed. These clamps - right and left are not identical. Here I present and offer the right clamp, which does have a spring.

Note - different stage models use different clamps. In the photo gallery there are detailed photos of this element along with dimensions. In the last photo, the stage to which this clamp fits is shown. Additionally, an arrow indicates where this element is located, so it is clear which part of the microscope stage is being referred to.

These are the exact components marked with numbers 4 and 5 in the instruction manual sketch.
The scanned copy of the instructions comes from http://www.mikroskopfreunde-nordhessen.de/.

Description of this part for the microscope.

micrometer scale: no
- dedicated for polarization: no
- material: aluminium with plastic elements
- mounting diameter: 73 mm

This stage fits the following microscopes:
- Lomo MBI-1
- Lomo MBR-3
- Lomo Biolam
- Lomo sold under the names Bresser and Zenith

This Lomo stage also fits microscopes:
- Carl Zeiss Jena L-Stativ
- Carl Zeiss Jena Lg
- Carl Zeiss Jena Lu
- Carl Zeiss Jena Lr
- Carl Zeiss Jena Lumipan

If any of the above microscopes currently has a fixed stage (screwed), it is possible to retrofit a holder for interchangeable stages (like this: https://www.microscopeparts.eu/part/99175) - this applies to both Lomo and Carl Zeiss Jena microscopes.

How does compatibility of stages between Carl Zeiss Jena and Lomo microscopes work?
- Carl Zeiss Jena stages for L-Stativ microscopes have a mounting diameter of 71 mm
- Lomo stages for MBR-3 / MBI-1 microscopes have a mounting diameter of 73 mm
- The spring-loaded front screw and long side centering screws in the mounting holder compensate for these differences
- Carl Zeiss Jena stages are more solid, heavier, made of brass
- Lomo stages are lighter, made of aluminium with plastic elements

From the 1930s to approximately the mid-1960s many German manufacturers produced microscopes with the same stage mounting standard, so this stage will also fit them.

Note that although this is a round and rotating stage, it is not a polarizing stage. It does not have a micrometer scale to read how many degrees (0-360) the rotation has occurred. Without this scale it can of course be used for amateur observations in polarized light, however for professional applications this is disqualifying.

Description of this part for the microscope.

On the condenser, the model name is written in Cyrillic and looks similar to ON-14.

The Lomo OI-14 condenser has a removable (unscrewable) top lens:
- A1.4 with high aperture, for use with objectives with high numerical aperture (which corresponds to high magnifications, it can be assumed above 40x)
- A0.3 with low aperture, for use with low magnification objectives

Although it is possible to work with low magnification objectives (e.g. 5x or 10x) using a condenser with the A1.4 lens installed - the image is too "sharp" and contrasty. In this case, replacing the lens with A0.3 allows obtaining a pastel, soft and visually pleasant image.

Since the Lomo OI-14 condenser has been produced since the 1960s, over the years this additional lens has very often been lost and most condensers available on the secondary market have only one - most often A1.4.

The Lomo OI-14 condenser has a mounting diameter of 37 mm, but since it is very popular among microscope users, an extension ring is often used, allowing it to be mounted in microscopes with a 39.5 mm condenser holder. This condenser fits microscopes from various manufacturers: Lomo, PZO, Zeiss, Carl Zeiss Jena, Meopta, IOR, Olympus, ROW, Nikon, Leitz Wetzlar and many others.

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.

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.

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.

220V - 240V
Output: 8V
Output power: 20W
Power plug: European flat plug
Potentiometer: yes, smooth brightness adjustment

Designed for:
- Lomo OI-21 illuminator
- Lomo OI-35 illuminator
- illuminator used with MBC-9 and MBC-10 stereo microscopes

Also compatible with older black Lomo microscopes:
- MBB-1
- MIN-8
- EPI reflected-light illuminators, including those used with the Lomo METAM and Lomo MMU-3
- and many others

Some older Lomo microscopes (for example, the MBC-1 and MBC-2 stereo microscopes) may use different connectors, but they use the same Lomo 8V 20W BA15d lamps.

Description of this part for the microscope.

3x
Kind: PR (ПР) - projection eyepiece for photomicrography
Type: K - compensating eyepiece
Mounting diameter: 23.2 mm

Projection eyepieces are special microscope eyepieces used to project the microscopic image onto the sensor of a camera. Many microscope photo tubes and trinocular heads have a seat for a projection eyepiece.

The "compatibility" section lists the microscope models this eyepiece can be used with, but only LOMO microscopes are listed there, as examples, and that list is of course not complete. This projection eyepiece can be used with any microscope of any manufacturer, as long as it has a tube or another seat for an eyepiece of 23.2 mm diameter.

Description of this part for the microscope.

The tube allows a camera or a camera body to be attached to a trinocular head or directly to the microscope body, even when there is no trinocular head.

Basic technical parameters of this tube:
Manufacturer: LOMO (ЛОМО)
Colour: black, rings and barrel chrome-plated
Tilt angle: none, this is a straight tube
Internal optics: none - not even a deflecting prism
Mounting to the trinocular head or microscope body: ring dovetail (male part)
Dovetail diameter: 41 mm
Type of connection at the output: empty tube / barrel
Tube diameter at the output: 23.2 mm internal diameter
Length of the barrel / tube: variable
Length adjustment: yes - the barrel is extendable, with a scale from 140 to 200 mm and a knurled locking ring

This is the version with adjustable tube length. A scale from 140 to 200 mm is engraved on the extendable barrel, with a reference line and intermediate divisions, and the setting is locked with a knurled ring. This gives two things at once. First, a continuous change of the image scale - the longer the tube, the larger the image falling on the sensor or the film, so the framing can be adjusted without changing the objective. Second, and more importantly, the ability to work with objectives computed for different optical tube lengths: 160, 170, 180, 190 and 200 mm. Carl Zeiss Jena and LOMO objectives are computed for 160 mm, Leitz Wetzlar for 170 mm, some objectives of metallurgical and measuring microscopes for 190 or 200 mm - here you simply set the barrel to the right value and the objective works under its design conditions, instead of delivering an image with residual aberration.

Since the adapter has an empty barrel with an internal diameter of 23.2 mm on the output side, a projection eyepiece of that diameter can be placed in it, or a so-called "USB eyepiece", that is a digital microscope camera. Adapters between the 23.2 mm barrel and the M42 thread are also widely available, and from the M42 thread you can move on to any other mount: Nikon, Canon, Sony and others.

Such a tube can be mounted directly on the microscope body instead of the head. A dovetail seat with a diameter of 41.0 - 41.5 mm is found, among others, on the microscopes:
- LOMO
- Carl Zeiss Jena
- Meopta
- IOR
- Reichert Biopan
- Olympus CH

It is also often used in microscopes with a slightly larger seat, among others Zeiss West Germany, Leitz Wetzlar, PZO, Will Wetzlar, Hund Wetzlar.

The "compatibility" section gives an example list of microscopes this tube fits, although it is not a complete list.

The last photo shows a LOMO Erudit microscope with this photo tube and a projection eyepiece mounted. It is an example of use.

Description of this part for the microscope.

this case are the dimensions of these clips, because they let the user make sure that the clips will fit the microscope stage he owns - from any manufacturer:
Length: 50 mm
Width: 7 mm
Diameter of the mounting pin: 4 mm (+/- 0.3 mm, because the pin is slotted inside and can be expanded / squeezed)
Height (pin measured together with the head): 18 mm
Diameter of the head: 9 mm

These all-metal clips are widely used to replace missing parts in many older microscopes during restoration - regardless of the manufacturer and the model of the microscope.

ЛОМО supplied such clips with the following microscopes, among others:
- Lomo M-9
- Lomo МБИ-1 (MBI-1)
- Lomo MBP-1 (MBR-1)
- Lomo Erudit (ЛОМО Эрудит)
- Lomo Biolam Д1 / Д2 / Д3 (D series - portable)
- Lomo Biolam C1 / C2 / C3 (S series - for students)
- Lomo Biolam P1 / P2 / P3 / P4 (R series - working microscopes)
- Lomo Biolam models (ЛОМО Биолам) with the micro fine focus adjustment built into the base (that is, with a two-digit model number, Дxx / Cxx / Pxx)
- as well as those microscopes sold in Germany under the Bresser brand (Bresser Biolam / Bresser Erudit), including the newest ones with illumination integrated into the base
- and the same microscopes sold in the U.K. under the Zenith brand
- Lomo Biolam 70
- Lomo Micmed 1

ЛОМО marked the series in Cyrillic letters, so the letter engraved on the microscope does not always mean what it seems to mean at first glance: Д stands for the Latin D, but the Russian C is read as S and the Russian P as R.

The same models in the notation used on Western markets:
- Lomo Biolam D-1 / D-2 / D-3
- Lomo Biolam S-1 / S-2 / S-3
- Lomo Biolam R-1 / R-2 / R-3 / R-4

Users use various names for this part. All of them mean the same thing: the clips on the microscope stage that hold the slide with the specimen in place. These include:
- stage clips
- microscope stage clips
- slide clips
- spring clips
- stage spring clips
- specimen clips
- specimen spring clips
- slide holder clips
- object clamps

In the last photo in the gallery you can see the complete Lomo Biolam R-1 microscope. In that photo I point out with an arrow where these clips are located on the microscope - so that it is completely clear which part is meant.

In the "compatibility" section I list only a few models of microscopes that these clips fit. It is definitely not a complete list.