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.

came from an EPI-POL illuminator for the Carl Zeiss Jena NU microscope, but as far as I know, the same sliders are compatible with the polarizing kit for the Carl Zeiss Jena Lg, NF, and Polmi-A polarizing microscopes. It's very possible it fits other configurations I'm not aware of, or even microscopes from other manufacturers.

Description of this part for the microscope.

Jena NU microscope, but as far as I know, the same sliders are compatible with the polarizing kit for the Carl Zeiss Jena Lg, NF, and Polmi-A polarizing microscopes. It's very possible it fits other configurations I'm not aware of, or even microscopes from other manufacturers.

Description of this part for the microscope.

Carl Zeiss Jena Metaval
- Carl Zeiss Jena Docuval
- Carl Zeiss Jena NU-2

There are several models of mechanical microscope stages from Carl Zeiss Jena designed for microscopes of the Mikroval series. They differ mainly in the placement of the control knobs used for movement in both axes, for example:
- the Ergaval model has a short handle with control knobs
- the Amplival model has a long handle
- some variants of the Laboval model had a stage without a handle with control knobs, where the knobs were arranged horizontally on both sides of the stage.

However, many of the individual components used in these stages are identical.

Many of these stages can also be used interchangeably with other microscopes of the Vertival series, which means that many microscopes today no longer have their original stages. For this reason it is best to examine the photos carefully to make sure that the element shown and offered here will fit.

In the photo gallery there are detailed photos of this element together with the dimensions. Additionally, in the last photo an arrow indicates which element is being referred to and where it is located in the microscope head, in order to clearly identify this part.

Description of this part for the microscope.

Carl Zeiss Jena Metaval
- Carl Zeiss Jena Docuval
- Carl Zeiss Jena NU-2

There are several models of mechanical microscope stages from Carl Zeiss Jena designed for microscopes of the Mikroval series. They differ mainly in the placement of the control knobs used for movement in both axes, for example:
- the Ergaval model has a short handle with control knobs
- the Amplival model has a long handle
- some variants of the Laboval model had a stage without a handle with control knobs, where the knobs were arranged horizontally on both sides of the stage.

However, many of the individual components used in these stages are identical.

Many of these stages can also be used interchangeably with other microscopes of the Vertival series, which means that many microscopes today no longer have their original stages. For this reason it is best to examine the photos carefully to make sure that the element shown and offered here will fit.

In the photo gallery there are detailed photos of this element together with the dimensions. Additionally, in the last photo an arrow indicates which element is being referred to and where it is located in the microscope head, in order to clearly identify this part.

Description of this part for the microscope.

Carl Zeiss Jena Metaval
- Carl Zeiss Jena Docuval
- Carl Zeiss Jena NU-2

There are several models of mechanical microscope stages from Carl Zeiss Jena designed for microscopes of the Mikroval series. They differ mainly in the placement of the control knobs used for movement in both axes, for example:
- the Ergaval model has a short handle with control knobs
- the Amplival model has a long handle
- some variants of the Laboval model had a stage without a handle with control knobs, where the knobs were arranged horizontally on both sides of the stage.

However, many of the individual components used in these stages are identical.

Many of these stages can also be used interchangeably with other microscopes of the Vertival series, which means that many microscopes today no longer have their original stages. For this reason it is best to examine the photos carefully to make sure that the element shown and offered here will fit.

In the photo gallery there are detailed photos of this element together with the dimensions. Additionally, in the last photo an arrow indicates which element is being referred to and where it is located in the microscope head, in order to clearly identify this part.

Description of this part for the microscope.

Carl Zeiss Jena Metaval
- Carl Zeiss Jena Docuval
- Carl Zeiss Jena NU-2

There are several models of mechanical microscope stages from Carl Zeiss Jena designed for microscopes of the Mikroval series. They differ mainly in the placement of the control knobs used for movement in both axes, for example:
- the Ergaval model has a short handle with control knobs
- the Amplival model has a long handle
- some variants of the Laboval model had a stage without a handle with control knobs, where the knobs were arranged horizontally on both sides of the stage.

However, many of the individual components used in these stages are identical.

Many of these stages can also be used interchangeably with other microscopes of the Mikroval series, which means that many microscopes today no longer have their original stages. For this reason it is best to examine the photos carefully to make sure that the element shown and offered here will fit.

In the photo gallery there are detailed photos of this element together with the dimensions. Additionally, in the last photo an arrow indicates which element is being referred to and where it is located, in order to clearly identify this part.

Description of this part for the microscope.

Carl Zeiss Jena Metaval
- Carl Zeiss Jena Docuval
- Carl Zeiss Jena NU-2

There are several models of mechanical microscope stages from Carl Zeiss Jena designed for microscopes of the Mikroval series. They differ mainly in the placement of the control knobs used for movement in both axes, for example:
- the Ergaval model has a short handle with control knobs
- the Amplival model has a long handle
- some variants of the Laboval model had a stage without a handle with control knobs, where the knobs were arranged horizontally on both sides of the stage.

However, many of the individual components used in these stages are identical.

Many of these stages can also be used interchangeably with other microscopes of the Mikroval series, which means that many microscopes today no longer have their original stages. For this reason it is best to examine the photos carefully to make sure that the element shown and offered here will fit.

The surface of these microscope stages is often very worn. You could try painting it, but it's definitely better to replace it. The piece I'm showing here isn't perfect - it shows signs of wear, but it's in very good condition.

In the photo gallery there are detailed photos of this element together with the dimensions. Additionally, in the last photo an arrow indicates which element is being referred to and where it is located, in order to clearly identify this part.

Description of this part for the microscope.

Carl Zeiss Jena Metaval
- Carl Zeiss Jena Docuval
- Carl Zeiss Jena NU-2

There are several models of mechanical microscope stages from Carl Zeiss Jena designed for microscopes of the Mikroval series. They differ mainly in the placement of the control knobs used for movement in both axes, for example:
- the Ergaval model has a short handle with control knobs
- the Amplival model has a long handle
- some variants of the Laboval model had a stage without a handle with control knobs, where the knobs were arranged horizontally on both sides of the stage.

However, many of the individual components used in these stages are identical.

Many of these stages can also be used interchangeably with other microscopes of the Mikroval series, which means that many microscopes today no longer have their original stages. For this reason it is best to examine the photos carefully to make sure that the element shown and offered here will fit.

In the photo gallery there are detailed photos of this element together with the dimensions. Additionally, in the last photo an arrow indicates which element is being referred to and where it is located, in order to clearly identify this part.

Description of this part for the microscope.

Carl Zeiss Jena Metaval
- Carl Zeiss Jena Docuval
- Carl Zeiss Jena NU-2

There are several models of mechanical microscope stages from Carl Zeiss Jena designed for microscopes of the Mikroval series. They differ mainly in the placement of the control knobs used for movement in both axes, for example:
- the Ergaval model has a short handle with control knobs
- the Amplival model has a long handle
- some variants of the Laboval model had a stage without a handle with control knobs, where the knobs were arranged horizontally on both sides of the stage.

However, many of the individual components used in these stages are identical.

Many of these stages can also be used interchangeably with other microscopes of the Mikroval series, which means that many microscopes today no longer have their original stages. For this reason it is best to examine the photos carefully to make sure that the element shown and offered here will fit.

In the photo gallery there are detailed photos of this element together with the dimensions. Additionally, in the last photo an arrow indicates which element is being referred to and where it is located, in order to clearly identify this part.

Description of this part for the microscope.

08 160/-
Color correction: Planachromat
Numerical aperture: 0.08
Tube length: 160 mm
Focal length: 45 mm
Cover glass: no
Immersion: no
Thread: RMS

This lens provides an excellent, wide image, and because it doesn't require a cover glass, it's often used for macro photography and stacking.

Important - this lens is not suitable for taking photos using the "direct-projection" technique, as it requires plan-compensation optics.

A microscope objective with such low magnification is used, among others, in the following fields:
- tissue overview examination in pathomorphology
- observation of insects
- observation of minerals
- observation of inclusions in amber
- handwriting analysis
- observation of micromollusks
- and many others

Description of this part for the microscope.

Length: 45 mm
Cover Glass: yes, 0,17 mm
Immersion: no
Thread: RMS
Info: Ph = phase contrast

It can be used with any microscope from any manufacturer, along with a compatible phase contrast condenser. The microscope must be compatible, meaning it supports RMS objectives, TL = 160 mm, FL = 45 mm.

Description of this part for the microscope.

mm
Focal Length: 45 mm
Cover Glass: yes, 0,17 mm
Immersion: yes, oil
Thread: RMS
Info: Ph3 = phase contrast

It can be used with any microscope from any manufacturer, along with a compatible phase contrast condenser. The microscope must be compatible, meaning it supports RMS objectives, TL = 160 mm, FL = 45 mm.

Description of this part for the microscope.

yes

This condenser fits microscopes from many manufacturers (e.g. Steindorff Berlin, Zeiss, Carl Zeiss Jena, Leitz, Kremp Wetzlar, Will Wetzlar and many others) with a condenser holder diameter of 39.5 mm.

Description of this part for the microscope.

10x
Correction: Achromat
Numerical aperture: 0.24
Tube length: 160 mm
Focal length: 45 mm
Cover glass: no
Immersion: no
Thread: RMS
Info: PI = polarization-interference objective (red ring).

Compatible with the following PZO condensers:
- PZO KPI 2
- slit condenser
PI objectives are among the components of the PZO UPI set (i.e. the so-called DIC).

VERY IMPORTANT: the marking on the objective is "PI" (in lowercase: "pi"), meaning [P]-polarization [I]-interference.
In many descriptions available on the Internet, you can find information that this is a PLAN objective. This is an ERROR caused by misinterpreting the marking as PL.

Note: another INCORRECT piece of information often found online is that these are DIC objectives. This is not true.
DIC according to Pluta (niem: DIC nach Pluta), sold by PZO, achieves the DIC effect (i.e. a 3D relief image) using standard achromatic PZO objectives (and not only those). Objectives marked PI with a red ring are not required for this.

It can be used with any microscope from any manufacturer that supports RMS objectives, TL=160 mm, FL=45 mm.

Description of this part for the microscope.

40
Mounting diameter: 39.5 mm
Iris diaphragm: yes
Filter holder: yes, for round filters with 32 mm diameter
Removable top lens: yes

This is a very rarely encountered condenser designed for use with high numerical aperture objectives (e.g. Nikon Plan Apo or Leitz PL-Fluotar Oel Fluoreszenz).

This condenser fits microscopes from many manufacturers (e.g. PZO, Zeiss, Carl Zeiss Jena, Leitz, Kremp Wetzlar, Will Wetzlar and many others) with a condenser holder diameter of 39.5 mm.

Description of this part for the microscope.

10 160/-
Color correction: Planachromat
Numerical aperture: 0.10
Tube length: 160 mm
Focal length: 45 mm
Cover glass: no
Immersion: no
Thread: RMS

This lens provides an excellent, wide image, and because it doesn't require a cover glass, it's often used for macro photography and stacking.

Important - this lens is not suitable for taking photos using the "direct-projection" technique, as it requires plan-compensation optics.

A microscope objective with such low magnification is used, among others, in the following fields:
- tissue overview examination in pathomorphology
- observation of insects
- observation of minerals
- observation of inclusions in amber
- handwriting analysis
- observation of micromollusks
- and many others

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=45 mm.

Description of this part for the microscope.

Color correction: Planachromat
Numerical aperture: 0.25
Tube length: 160 mm
Focal length: 45 mm
Cover glass: no
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=45 mm.

Description of this part for the microscope.

17
Color correction: Planachromat
Numerical aperture: 0.32
Tube length: 160 mm
Focal length: 45 mm
Cover glass: yes, 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=45 mm.

Description of this part for the microscope.

17
Color correction: Planachromat
Numerical aperture: 0.65
Tube length: 160 mm
Focal length: 45 mm
Cover glass: yes, 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=45 mm.

Description of this part for the microscope.

17
Color correction: Planachromat
Numerical aperture: 1,25
Tube length: 160 mm
Focal length: 45 mm
Cover glass: yes, 0,17 mm
Immersion: yes, oil
Thread: RMS
Info: HI = Homogene Immersion, also oil immersion

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=45 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.

3x
Model: Semiplan 6.3/0.16 160/-
Color correction: Semi-Planachromat
Numerical aperture: 0.16
Tube length: 160 mm
Focal length: 45 mm
Cover glass: no
Immersion: no
Thread: RMS

This is one of the most commonly used microscope objectives for macro photography and focus stacking.

Important - this objective IS SUITABLE for taking images using the "direct-projection" technique, as it does not require plan-compensating optics.

It can be used with any microscope from any manufacturer. Of course, the microscope must be compatible, meaning it supports RMS objectives, TL=160 mm, FL=45 mm.

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.

for taking microscope photographs or recording microscope videos. This is a gray photographic adapter.

Basic technical parameters:
- mounting connection to microscope stand: 41 mm dovetail
- output connection type on the photo port: 49 mm internal thread
- connection for binocular head mounting: Jena standard 41 mm dovetail
- magnification directed to the binocular head: 1.6x
- magnification on the photo output: none (that is 1.0x)

Because this photo head has a 49 mm threaded output, virtually any device, camera, adapter, tube or other accessory can be connected after using an appropriate 49 mm thread adapter. Direct projection technique may be used (because there is no additional optics inside), or any projection eyepieces may be installed in the optical path.

This photographic attachment is intended mainly (but not exclusively) for the following microscope models:
- Carl Zeiss Jena Eduval
- Carl Zeiss Jena Laboval
- Carl Zeiss Jena Ergaval
- Carl Zeiss Jena Amplival
- Carl Zeiss Jena Vertival
- Carl Zeiss Jena Epival
- Carl Zeiss Jena Metaval
- Carl Zeiss Jena Telaval
- Carl Zeiss Jena Pictoval
- Carl Zeiss Jena Epignost

The list above contains Mikroval series microscopes with gray housings - just like the tube shown and offered here. However, it also works with older black Carl Zeiss Jena microscopes:
- Carl Zeiss Jena L-Stativ (models Lg, Lu and Lr)
- Carl Zeiss Jena Lumipan
- Carl Zeiss Jena Ng
- Carl Zeiss Jena Nf (and NfPk)

Please note that microscopes from other manufacturers also use the 41 / 41.5 mm dovetail connection standard. Because of this, this photographic head can also be used with microscopes made by:
- Lomo (for example Lomo Biolam)
- Meopta
- IOR
- selected Reichert microscopes (for example Reichert Neozet)
- Will Wetzlar
- Hund Wetzlar
- Leitz Wetzlar

This Carl Zeiss Jena tube is also very often used with microscopes having a larger head mounting diameter. In such cases users apply additional spacer or thickening rings. Because of this, this photo adapter also fits microscopes from manufacturers such as:
- PZO (for example the PZO Biolar model with 43 mm connection)
- Olympus (for example the Olympus CH model with 42 mm connection)

The element that allows a photographic camera or imaging camera to be connected to Carl Zeiss Jena Mikroval series microscopes may be referred to by different names. Commonly used names include:
- trino head
- trinocular head
- photo head
- photographic head
- photo attachment
- photographic attachment
- photo adapter
- photographic adapter
- photo tube
- photographic tube
- phototube
- photographic angle tube
- and various combinations of the words head, attachment, adapter or tube with terms such as photo, photographic, for camera and similar

Description of this part for the microscope.

35 160/0.17
Manufacturer part number: 46 05 10-9906 (alternative notation: 460510 - 9906)
Color correction: Planachromat
Numerical aperture N.A.: 0.35
Tube length: 160 mm
Focal length: 45 mm
Cover glass: yes, 0.17 mm thickness
Immersion: no (dry objective)
Thread: RMS

Description of this part for the microscope.

65 160/0.17
Manufacturer part number: 46 07 10-9904 (alternative notation: 460710 - 9904)
Color correction: Planachromat
Numerical aperture N.A.: 0.65
Tube length: 160 mm
Focal length: 45 mm
Cover glass: yes, 0.17 mm thickness
Immersion: no (dry objective)
Thread: RMS

Description of this part for the microscope.

bright field
- dark field
- oblique illumination
- phase contrast

It can work with phase objectives of different magnifications and from different manufacturers (it is sufficient to manually adjust the ring diameter).

Basic parameters:
Manufacturer: Leitz Wetzlar
Model: Heine condenser
Mounting diameter: 39.5 mm
Numerical aperture N.A.: variable, up to 1.4

This Heine condenser was designed for microscopes with a condenser holder in the form of a circular clamp (e.g. Leitz SM microscopes). It is not a condenser that slides into mounting rails (as found, for example, in the Leitz Orthoplan microscope).

This condenser fits microscopes from many manufacturers (e.g. PZO, Steindorff Berlin, Zeiss, Carl Zeiss Jena, Leitz, Kremp Wetzlar, Will Wetzlar and many others) equipped with a 39.5 mm condenser holder.

Description of this part for the microscope.

Wetzlar
Model: 160/0,17 EF 100/1.25 OEL PHACO 3
Magnification: 100x
Correction: semi-plan achromat
Numerical aperture: 1.25
Tube length: 160 mm
Focal length: 45 mm
Cover glass: yes, 0.17 mm
Immersion: yes, oil
Thread: RMS
Specimen protection: yes - spring-loaded
Info: PHACO 3 = phase contrast

Some important information about this objective:
- the designation "EF" means "Extended Field" - this is a semi-plan achromatic objective with an 18 mm field of view, which should be taken into account when selecting suitable eyepieces
- the semi-plan achromatic correction is "almost flat" - it is no longer an achromat, but not yet a plan achromat
- this objective can be used in brightfield, but phase contrast operation requires a compatible phase contrast condenser or a slide (slider) with a phase ring diaphragm
- the designation PHACO 3 means that for phase contrast operation a phase contrast condenser set to ring "3" should be used (the equivalent setting used by Zeiss is called "Ph3")
- this objective can be used with microscopes designed for objectives with a 170 mm tube length, but in such a case the optical path must be extended by 10 mm - most commonly by pulling the eyepieces out of the tubes by 10 mm

This objective can be used with any microscope from any manufacturer together with a compatible phase contrast condenser. Naturally, the microscope must be compatible, i.e. it must support RMS objectives, TL=160 mm and FL=45 mm - or have adapters that make such adaptation possible (for example thread adapters).

Description of this part for the microscope.

ameters:
Manufacturer: Lomo
Model: PLAN 25x0.50 P
Original designation: ЛОМО ПЛАН 25х0,50 П
Magnification: 25x
Numerical aperture N.A.: 0.50
Tube length: 160 mm
Cover glass: yes, 0.17 mm thickness
Immersion oil: no – this is a dry objective
Focal length: 45 mm
Thread type: RMS
Additional designation: P (Cyrillic: П) indicates that this objective is designed for use with polarized light
Special features: built-in iris diaphragm
Year of manufacture: 1976

This objective has a standard RMS thread and TL=160 mm, which means it can be used with the vast majority of microscopes from virtually any manufacturer, including Olympus, Zeiss, Nikon, PZO, Carl Zeiss Jena, Reichert, Wild and many others.

The built-in iris diaphragm allows, among other things, precise centering of the objective, because in a polarizing microscope the following diaphragms may operate simultaneously:
- field diaphragm in the illuminator
- aperture diaphragm (or two aperture diaphragms) in the condenser
- iris diaphragm in the microscope objective
- iris diaphragm in the eyepiece head
and accurate centering of all of them relative to each other is very important in polarized-light observations.

Objectives marked "P" / "Pol" feature a special construction in which the lenses are mounted and cemented in a way that prevents mechanical stress. They can be used both for conventional brightfield microscopy and for observations in polarized light.

Description of this part for the microscope.

diameter: 23.2 mm

This eyepiece allows the microscope image to be projected onto a surface such as a wall, ceiling or projection screen.

Originally, this eyepiece model was supplied with the Carl Zeiss Jena Pictoval projection microscope. It can also be installed on virtually any microscope from any manufacturer with a 23.2 mm eyepiece tube.

Important: Projecting a microscope image requires a very large amount of light, so a high-power illuminator is necessary.

Description of this part for the microscope.

head in Carl Zeiss Jena Pictoval projection microscopes (microprojectors). The adjustable tilt angle of the eyepiece tube, which held a projection eyepiece (usually f=100), allowed the position of the projected image on the projection surface to be changed.

Basic parameters:
Manufacturer: Carl Zeiss Jena
Eyepiece mounting diameter: 23.2 mm
Mounting to the microscope arm: 41 mm diameter dovetail ring

Because this microscope head has a Carl Zeiss Jena standard microscope mount (a 41 mm diameter dovetail ring), it can be mounted on most microscopes from this manufacturer (e.g. Carl Zeiss Jena Eduval, Laboval, Ergaval, Amplival, etc.), as well as on microscopes made by Lomo (e.g. Lomo Biolam), IOR and Meopta.

It seems useful to mention a few points:
- never look through this microscope head with the naked eye if a projection eyepiece is installed in it and the head is mounted in a Carl Zeiss Jena Pictoval microprojector. This may result in loss of eyesight due to the very high light output emitted by this microscope
- when mounting this microscope head on a microscope other than a Carl Zeiss Jena Pictoval, a different magnification scale may be obtained than with the original heads designed for the particular microscope model
- projecting a microscope image requires a great deal of light, i.e. a powerful illuminator. This is worth remembering if you intend to use this head to project an image from biological microscopes with standard incandescent illumination (e.g. 15 W 6 V), which is definitely not sufficient
- visual observation using this microscope head may be inconvenient because it has a different (smaller) tilt angle than standard monocular or binocular microscope heads