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.

has a 20 mm thread.

Element: upper lens of a microscope condenser
Manufacturer: Leitz Wetzlar (Leica)
Model: 0,90 As
Thread diameter: 20 mm
Immersion: no - this is a dry upper lens

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.

is part of the component shown in the Leitz Dialux 20 microscope manual under number 18, which corresponds to the field diaphragm assembly. This page from the manual can be found in the image gallery.

The field diaphragm of the Leitz Dialux 20 microscope consists of:
- lens
- iris diaphragm
and is screwed to the microscope base (stativ foot) directly below the condenser.
The item offered here is exactly this lens.

This lens performs several functions:
- it collimates the light beam
- it protects the iris diaphragm from contamination
- it also serves as a filter holder for inserting filters

It is worth noting that this element may also be compatible with many other Leitz Wetzlar microscope models.

Description of this part for the microscope.

diffuser)
- blue
- yellow
- green

New (usually Chinese) microscope filters are sometimes not even made of glass. And even if they are made of glass - you may encounter scandalous examples where the glass is only surface-colored. Unfortunately, cheap colored glass filters may not be internally homogeneous and can cause light refraction distortions.

This filter set by PZO was originally sold together with the PZO Biolar microscope. It was manufactured in the 1970s (and certainly before 1977), so these are optical glasses that are about half a century old! They have never been used until now (this is so-called NOS - New Old Stock), therefore these are excellent old-class optical glasses of the highest quality.

Filters with a 32 mm diameter are used - and can be used - in microscopes from various manufacturers:
- Carl Zeiss Jena
- Zeiss West Germany
- Eschenbach
- Meopta
- Nikon
- ROW
- Leitz Wetzlar
- Wild
- Hund
- Kosmos
- and many others

Important - popular microscopes by Lomo (for example Lomo Biolam) have a 33 mm filter holder, so the filters shown here have too small a diameter and may fall out from some Lomo holders.

Description of this part for the microscope.

It transfers the light beam from the illuminator, properly focuses it using lenses and then reflects it vertically upwards using an angle mirror. This microscope element carries the manufacturer part number Leitz Wetzlar 020-452.010-025.

This part may solve the following problems that can occur in the Leitz Dialux 20 microscope:
- if artifacts in the form of lines are visible in the microscope image - this may indicate a crack in the light-collimating lens caused by high temperature emitted by the illuminator
- if the light-reflecting mirror is damaged: scratched, chipped, cracked or if the silver coating has oxidized

Description of this part for the microscope.

8x
- lens mount marked: 0.8x 419610 (font characteristic for the Wild company. Number 419610 is the manufacturer catalog number)
- field widening lens: 0.8x MPS 195182 (number 195182 is the catalog number of this lens)
- Wild Leitz / Wild MPS 52 photo tube (Heerbrugg Switzerland) with connector for the MPS 46 control console (important - the console is not included)

The mounting diameter on the microscope side is 40 mm.

This tube is currently commonly used for connecting digital cameras or photographic cameras to microscopes with a trinocular head. There is a lot of information about this online as well as DIY step-by-step guides on internet forums. It allows taking microscope photographs and, after minor modifications, it can also be used for macrophotography https://www.mikroskopia.de/serv-mps52-en.html.

Please note that the MPS 52 was sold during a period of ownership and manufacturer name changes. Leitz Wetzlar changed its name to "Leica", and Leica later acquired Wild Heerbrugg. Because of this, the following names are used interchangeably for the entire MPS 52 system:
- Wild MPS 52
- Leitz MPS 52
- Leica MPS 52
This is also visible on the element shown in the photographs:
- the adapter for Polaroid film backs is marked as Wild Heerbrugg
- while the tube itself carries the "Wild Leitz" logo

Description of this part for the microscope.

Lichteinstellupe (Centering / Focus telescope)
Mounting diameter: 23.2 mm + original 30 mm adapter

This centering telescope can be used for:
- DIC alignment (Differential Interference Contrast)
- Phase contrast alignment (centering phase rings)
- Aperture diaphragm inspection (iris diaphragm observation)Filament centering when setting up Köhler illumination

This is one of those microscope elements for which many different names are used. Among others:
- phase telescope
- phase contrast telescope
- phase alignment telescope
- phase adjustment telescope
- phase centering telescope
- phase contrast centering telescope
- phase contrast alignment telescope
- phase contrast adjustment telescope
- centering telescope
- condenser centering telescope
- condenser alignment telescope
- condenser adjustment telescope
- alignment telescope
- adjustment telescope
- inspection telescope
- aperture viewing telescope
- back focal plane viewing telescope
- auxiliary microscope
- phase contrast auxiliary microscope
- alignment auxiliary microscope
- centering auxiliary microscope
- adjustment auxiliary microscope
- auxiliary telescope
- centering scope
- alignment scope
- phase scope
- phase viewer
- phase contrast viewer
- phase centering eyepiece
- phase contrast eyepiece
- phase alignment eyepiece
- phase telescope eyepiece
- centering eyepiece
- condenser centering eyepiece
- adjustment eyepiece
- inspection eyepiece

Description of this part for the microscope.

objective nosepiece. It can hold, for example, fluorescence barrier filters, a polarization analyzer, a neutral density filter, or a custom DIY project.

Basic parameters:
Slider width: 20 mm
Slider thickness: 4 mm
Number of filter positions: 2
Filter diameter: 19 mm

A slider with a filter holder of these dimensions fits the following microscope models:
- Leitz Dialux II
- Leitz Ortholux II
Note that these are models marked with "II" and not the older black Leitz Dialux and Leitz Ortholux microscopes. It is also not compatible with Leitz Orthoplan microscopes, which require sliders with a width of 30 mm.

This slider is empty - it does not contain any filters and can be configured as desired.

Description of this part for the microscope.

170 mm
Focal length: 37 mm
Cover glass: yes, 0.17 mm
Immersion: no
Thread: RMS

This objective was removed from a Leitz Dialux microscope, but it is compatible with most Leitz Wetzlar microscopes manufactured approximately before 1980 (SM, SM-Lux, Dialux, Ortholux, Orthoplan, etc.).

Some useful information about Leitz Wetzlar objectives with TL=170 mm and FL=37 mm:
- most Leitz microscopes manufactured approximately before 1980 support both 160 mm and 170 mm tube length objectives
- many Leitz microscopes support both 37 mm and 45 mm focal length objectives
- by adding an RMS-8mm adapter, such an objective obtains a focal length of 45 mm. Leitz manufactured such adapters under the name "Plezzy" - however, many users make their own versions from metal or by using 3D printers

Description of this part for the microscope.

guide rails of the condenser holder. It is not a condenser mounted in a circular clamp, therefore it does not have a "diameter" parameter describing it.

This condenser was removed from a Leitz Wetzlar Dialux microscope (the first black model), but to the best of my knowledge it also fits other microscopes from the same era: Leitz Ortholux and Leitz Orthoplan. Important - it does not fit Leitz SM microscopes.

The upper flip-out lens provides the best image quality when working with objectives of high numerical aperture (N.A.). When the upper lens is flipped out, optimal illumination is achieved when using objectives with magnifications below 10x.

Description of this part for the microscope.

from a Leitz Dialux microscope. In the last photo in the gallery you can see the microscope stage from which it was removed. However, the manufacturer fitted the same type of mechanical XY microscope stage to many other Leitz microscope models, so this specimen holder is also compatible with models other than the Leitz Dialux.

When determining compatibility and whether this specimen holder can be mounted on a particular mechanical XY microscope stage, the following dimensions are critical:
- distance between the two side locating pins: 81 mm measured from the outer edge of one pin to the outer edge of the other pin
- locating pin diameter: 3 mm each
- therefore, the centre-to-centre distance between the locating pins is 78 mm
- diameter of the central mounting screw: 4 mm
- position of the mounting screw: centred between the two locating pins

If the spacing of the locating pins matches, this specimen holder can also be mounted on microscope stages made by other manufacturers.

Leitz Wetzlar produced specimen holders with fixed stage clips as well as versions with a spring-loaded stage clip. Here I am showing and offering the spring-loaded version.

On the used market and in technical documentation, this microscope part is described using a variety of names. Common terms include:
- specimen holder
- microscope stage specimen holder
- mechanical stage specimen holder
- slide holder
- microscope slide holder
- microscope slide clamp
- spring-loaded specimen holder
- spring-loaded slide holder
- spring-loaded stage clip
- specimen clamp
- specimen carrier
- mechanical stage carrier
- XY stage specimen holder
- specimen holder for mechanical XY microscope stage
- stage holder
- stage clip assembly

The photographs in the gallery show the exact dimensions of the microscope part offered here. In addition, the last photograph includes an arrow indicating exactly which microscope part is being described and where it is mounted on the mechanical XY microscope stage, making identification straightforward. The accompanying video demonstrates the operation of the spring-loaded stage clip.

Description of this part for the microscope.

allowing precise movement of the specimen in both the X and Y axes of the stage plane. The manipulator consists of two coaxial knobs, two independent drive shafts and the fixing elements that attach it to the stage mechanism.

This particular manipulator was removed from a Leitz Dialux microscope. The last photograph in the gallery shows the entire microscope stage from which it was dismounted. The manufacturer also used the same or very similar stages in many other Leitz Wetzlar microscope models, which is why the manipulator may also be compatible with other models from this company.

On the second-hand market and in service documentation one encounters many names referring to this assembly. The most commonly used terms include, among others:
- stage manipulator
- XY stage manipulator
- mechanical stage drive
- stage control knobs
- specimen mover
- coaxial stage drive
- stage drive assembly
- mechanical stage control
- manual XY stage drive
- stage actuator mechanism

Such manipulators very often suffer mechanical damage during transport of the microscope. Because they protrude beyond the outline of the stand, it is precisely they that absorb the impact energy first — in the event of a fall or improper packaging of the instrument.

In many cases it is not the entire manipulator that is damaged, but only one of its components. Most often these are the knobs, the drive shafts, the coaxial sleeves or the fixing elements. For this reason, this database also contains all the most important constituent parts of this (and other) manipulators, offered separately as service elements.

Damage to the manipulator does not make further work with the microscope impossible. The specimen can be moved by hand, or a simple specimen holder without an XY movement mechanism can be fitted. Such a solution works well at low magnifications; however, when working with objectives of magnifications greater than 40x (e.g. 60x, 63x, 80x or 100x), precise manual movement of the specimen becomes very difficult. At total magnifications exceeding about 400x, even a slight movement of the hand shifts the image by a considerable distance within the field of view. The mechanical manipulator enables very smooth, controlled and repeatable movement of the specimen in both axes, which is particularly important during observation with oil immersion and when producing photographic documentation.

The photographs in the gallery show the exact dimensions of the complete manipulator. The last photograph presents the entire microscope stage together with an arrow indicating the mounting location of this element, which makes it possible to identify the offered part unambiguously.

Description of this part for the microscope.

not 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.

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 Leitz Wetzlar logo on its cap.

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