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.

light. The equivalent of the Zeiss IM 35 (IM-35, IM35) microscope is the Opton ICM 405 (ICM-405, ICM405).

Description of this part for the microscope.

I don't remember the specifications for the Jenatech.

Note: this is the version with the frosted glass; there are also versions without it.

Description of this part for the microscope.

This is a component of the transmitted light optical path - it is not a diaphragm for EPI reflected light.

This part fits various Carl Zeiss Jena microscope models built on the Amplival stand:
- Amplival
- Amplival Interphako
- Amplival Pol
- Vertival
- Peraval
- Fluoval
- Docuval

Description of this part for the microscope.

Description of this part for the microscope.

This diaphragm is necessary to set illumination according to the Koehler system.

This element is used in a diaphragm installed in various Carl Zeiss Jena microscope models built on the Amplival stand:
- Amplival
- Amplival Interphako
- Amplival Pol
- Vertival
- Peraval
- Fluoval
- Docuval

The field diaphragm located in the microscope base is part of the transmitted light path - it is not a diaphragm for EPI (reflected) illumination. However, it is VERY LIKELY that individual blades may also fit reflected light diaphragms and other diaphragms (e.g. aperture diaphragms) in Carl Zeiss Jena microscopes and condensers.

Damage to iris diaphragm blades is one of the more common failures in Carl Zeiss Jena microscopes. Most often this occurs when:
- the lubricant in the diaphragm opening / closing mechanism dries out and the user tries to move it by force
- a foreign object gets between the blades (e.g. a glass fragment from a chipped microscope slide)
- the diaphragm is closed too quickly or opened too far

In the event of an iris diaphragm failure, it is possible to:
- replace the entire element (condenser or diaphragm module)
- replace only the diaphragm
- repair the diaphragm by replacing the damaged blades

Description of this part for the microscope.

Most often this occurs when:
- the lubricant in the diaphragm opening / closing mechanism dries out and the user tries to move it by force
- a foreign object gets between the blades (e.g. a glass fragment from a chipped microscope slide)
- the diaphragm is closed too quickly or opened too far

In the event of an iris diaphragm failure, it is possible to:
- replace the entire condenser
- replace only the diaphragm
- repair the diaphragm by replacing the damaged blades

This is an element for repair of a microscope condenser by Carl Zeiss Jena, model Abbe 1.2.
Please note that this is an element (component) for a microscope part (condenser), not for a specific microscope model.

Description of this part for the microscope.

was removed from a Carl Zeiss Jena Jenamed Cytology microscope. It will most likely also fit other models from the Jenamed series (e.g. Jenamed Variant, Jenamed Fluorescence, Jenamed-2, Jenamed Hematology).

It does not fit the Jenamed Histology model because the Carl Zeiss Jena Jenamed Histology microscope features a different type of condenser (a 'flip-out' type) by default. For this reason, the iris diaphragm is located slightly lower than in other models and is different.

To make sure whether this iris diaphragm will fit a specific Carl Zeiss Jena microscope from the Jenamed series, it is best to carefully check all dimensions based on the gallery photos or ask a question on a professional forum, e.g. https://www.mikroskopie-forum.de/

Mechanically, this diaphragm is mounted underneath the condenser. The entire diaphragm module is attached to the microscope body with four screws. It is not mechanically connected to the condenser - these are separate elements. The lever pin used to open / close the diaphragm protrudes through a special opening at the front of the microscope, making it possible to adjust the diaphragm opening. This opening is located in the cover of the filter wheel - here one can see further relationships between the individual elements of the light path.

Carl Zeiss Jena Jenamed microscopes do not have a field diaphragm.

Replacement of the aperture diaphragm module in a Carl Zeiss Jena Jenamed microscope may be necessary:
- when some of the iris diaphragm blades become damaged (bent or broken)
- when the lever used to open / close the diaphragm breaks off
- when the teeth of the gear wheel mounted in this module become damaged

Metal cast or injection-moulded microscope parts made by Carl Zeiss Jena have their own numbers. This part carries the number 2713 (full marking: Si10 CZ 2713).

Description of this part for the microscope.

This diaphragm DOES NOT FIT the following Carl Zeiss Jena microscopes:
- Jenamed 2
- Jenamed Variant
- Jenamed Cytology
- Jenamed Hematology
- Jenamed Fluorescence

Mechanically, this diaphragm is mounted below the condenser. The complete diaphragm module is attached to the microscope stand with two screws. It is not mechanically connected to the condenser - these are separate components. The lever (pin) used to open and close the diaphragm extends through a dedicated opening at the front of the microscope, allowing adjustment of the diaphragm opening. This opening is located in the cover of the filter wheel - illustrating further relationships between successive elements of the light path.

Carl Zeiss Jena Jenamed microscopes do not have a field diaphragm.

Replacement of the aperture diaphragm module in a Carl Zeiss Jena Jenamed Histology microscope may be necessary:
- when one or more iris diaphragm blades become damaged (bent or broken)
- when the lever used to open and close the diaphragm breaks off
- when the teeth of the gear wheel installed in this module become damaged

Metal cast or injection-moulded microscope parts manufactured by Carl Zeiss Jena carry their own part numbers. This part bears number 2714 (full marking: Si10 CZ 2714). The iris diaphragm module used in the other Carl Zeiss Jena Jenamed microscope models bears part number Si10 CZ 2713.

Description of this part for the microscope.

Stand family).

The Carl Zeiss Jena Lu microscope features a modular design (the same as the larger Carl Zeiss Jena Nf microscope). This microscope part (this module) consists of the following components:
- dovetail mounting with a clamping screw for attachment to the condenser lifting block
- condenser holder with a retaining screw for securing the condenser
- iris diaphragm (aperture diaphragm)
- iris diaphragm sliding carriage allowing lateral movement of the diaphragm
- eccentric mechanism allowing rotation of the carriage, making it possible to illuminate not only from the sides but also from the front or rear
- spring plate (lock) allowing the entire diaphragm assembly to be moved out of the optical path

The condenser holder has an internal mounting clamp for condensers with a diameter of 39.5 mm.

The movable iris diaphragm mounted below the microscope condenser allows oblique illumination and produces a three-dimensional image effect that increases the contrast of transparent specimens (for example individual unstained cells). This provides an effect similar to Differential Interference Contrast (DIC).

Various names are used on the secondary market for this microscope part, including:
- decenterable iris diaphragm
- decentering aperture diaphragm
- off-axis iris diaphragm
- eccentric iris diaphragm
- sliding iris diaphragm
- sliding iris
- oblique illumination condenser
- condenser with sliding iris
- oblique illumination module
- oblique illumination diaphragm
- offset iris
- Poor Man's DIC device

Note - this condenser module DOES NOT FIT Carl Zeiss Jena Nf, Ng, Lumipan, Polmi-A or Nu microscopes, even though the mounting arrangement appears very similar at first glance.

Description of this part for the microscope.

Jena
Version: grey version, removed from a Carl Zeiss Jena Amplival microscope
Mounting method: aperture diaphragm in the form of a detachable module
Centerable: yes

This iris diaphragm module is mechanically mounted to the bottom of the panchromatic condenser.

In Carl Zeiss Jena panchromatic condensers, the diaphragm is designed as a detachable module because it can be removed and replaced, for example, with a phase contrast module or a polarization module. Precisely because this microscope part can be detached, it is often missing from condensers available on the secondary market - over the years it simply gets lost.

Interestingly, this microscope part is very often modified. When users do not have a phase contrast module or a polarization module, they frequently insert polarizing film or custom-made phase rings into the aperture diaphragm module and obtain the functionality they need through DIY modifications.

This module can also solve a common problem found in Carl Zeiss Jena Amplival microscopes, namely damaged diaphragm blades in the condenser.

Description of this part for the microscope.

2

this module serves as the aperture diaphragm. The field diaphragm is built into the illumination path inside the microscope base.

At the same time, it provides a holder for 32 mm round filters. The video available in the gallery also demonstrates how a filter is inserted into this holder.

The sliding iris diaphragm mounted beneath the microscope condenser allows oblique illumination to be set, producing a three-dimensional image with enhanced contrast of transparent specimens (such as unstained cells). The resulting image is similar to differential interference contrast (DIC).

This component is known under various names, including:
- decenterable iris diaphragm
- decentering aperture diaphragm
- off-axis iris diaphragm
- eccentric iris diaphragm
- sliding iris diaphragm
- sliding iris
- oblique illumination condenser
- condenser with sliding iris
- oblique illumination module
- oblique illumination diaphragm
- offset iris
- Poor Man's DIC device

Note — this diaphragm DOES NOT FIT the Carl Zeiss Jena Lumipan microscope, even though it appears very similar at first glance.

Because this module is removable, it is missing from a large proportion of microscopes available on the second-hand market. During decades of use, these diaphragm modules were frequently lost.

In addition, they are often damaged and need replacement. The most common failures include:
- the protective glass covering the diaphragm becomes scratched or broken
- the diaphragm blades become bent or broken
- the screw used to decenter the diaphragm bends or breaks
- the return spring responsible for restoring the diaphragm to its centred position becomes damaged or is missing

Replacing the damaged assembly with the diaphragm module offered here solves these problems.

Description of this part for the microscope.

microscope models:
- Carl Zeiss Jena Jenaval
- Carl Zeiss Jena Jenalumar
- Carl Zeiss Jena Jenapol
- can also be installed in a Carl Zeiss Jena Jenavert microscope to add transmitted-light capability

This component is located inside the microscope base and enables the microscope illumination to be adjusted according to the Köhler illumination principle.

Interestingly, microscope versions intended exclusively for reflected-light operation (for example, the basic versions of the Carl Zeiss Jena Jenavert) do not include this transmitted-light field diaphragm because they do not have a transmitted-light optical path. However, the microscope base is identical to that used in transmitted-light models. This makes it possible to upgrade such an EPI microscope for transmitted-light operation by installing the complete lower transmitted-light optical path. The field diaphragm offered here is one of the components required for this conversion.

In the last photograph, an arrow indicates where the transmitted-light field diaphragm is located inside the microscope base, making this component easy to identify.