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.

This insert fits condensers used in the following Lomo microscopes:
- Polam (all models)
- MIN-8
- MIK-1
- MIK-4

and most likely also in other microscopes that use similarly designed condensers. Note - to make sure that this insert fits your condenser, be sure to check the diameter of this element.

Mount diameter: 35 mm

The transmitted light condenser in these microscopes features:
- interchangeable upper lenses to obtain the required aperture
- a diaphragm located below the upper lens
- a slot for inserting a Pol filter insert (the insert may, but does not have to, include an additional iris diaphragm)

In some cases, this insert alone can be used without the condenser - the effect is similar to a condenser with a Pol filter of low N.A.
This element is often used by owners of microscopes from other manufacturers to convert their condenser into a polarisation condenser.

Since this element can be removed relatively easily, it is very often missing in microscopes from the secondary market.

IMPORTANT - this is not a separate microscope condenser. It is a component of the condenser, even though it is sometimes used as a substitute for a condenser.

Description of this part for the microscope.

condensers used in the following Lomo microscopes:
- Polam
- MIN-8
- MIK-1
- MIK-4

and most likely also in other microscopes that use similarly designed condensers. Note - to make sure that this insert fits your condenser, be sure to check the diameter of this element.

Mount diameter: 26 mm

The transmitted light condenser in these microscopes features:
- interchangeable upper lenses to obtain the required aperture
- a diaphragm located below the upper lens
- a slot for inserting a Pol filter insert (the insert may, but does not have to, include an additional iris diaphragm)

Note - this is the version without an iris diaphragm.

In some cases, this insert alone can be used without the condenser - the effect is similar to a condenser with a Pol filter of low N.A.
This element is often used by owners of microscopes from other manufacturers to convert their condenser into a polarisation condenser.

Since this element can be removed relatively easily, it is very often missing in microscopes from the secondary market.

IMPORTANT - this is not a separate microscope condenser. It is a component of the condenser, even though it is sometimes used as a substitute for a condenser.

Description of this part for the microscope.

Model: Lomo INF
Mount diameter: 35 mm

This insert fits condensers used in the following Lomo microscopes:
- MIK-1
- MIK-4
- Polam (all models)
- MIN-8

and most likely also in other microscopes that use similarly designed condensers. Note - to make sure that this insert fits your condenser, be sure to check the diameter of this element.

The transmitted light condenser in these microscopes features:
- interchangeable upper lenses to obtain the required aperture
- a diaphragm located below the upper lens
- a slot for inserting a IR filter insert (the insert may, but does not have to, include an additional iris diaphragm)

In some cases, this insert alone can be used without the condenser - the effect is similar to a condenser with a IR filter of low N.A.
This element is often used by owners of microscopes from other manufacturers to convert their condenser into a infrared condenser.

Since this element can be removed relatively easily, it is very often missing in microscopes from the secondary market.

IMPORTANT - this is not a separate microscope condenser. It is a component of the condenser, even though it is sometimes used as a substitute for a condenser.

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.

special diaphragms was supplied. The set included phase contrast diaphragms and dark field diaphragms.

Note - I am showing and offering here one single diaphragm in holder - exactly the one visible in the photos. This is a phase contrast diaphragm (phase annulus). The complete set for the Lomo Polam microscope contains 5 diaphragms.

Important note:
Such diaphragms in a special holder, supplied as a set of five diaphragms, were an accessory for the Lomo Polam polarizing microscope. These diaphragms are mounted onto the polarizing microscope condenser in order to combine these observation techniques and obtain a phase image in polarized light. Please note that the same condensers can also be used in Lomo MIN series polarizing microscopes (for example Lomo MIN-6 or Lomo MIN-8 models) and in Lomo MIK series infrared microscopes (for example Lomo MIK-4). This means that there is nothing preventing the use of these phase annuli in those microscopes as well.

The newest version of the Lomo Polam microscope, namely the Lomo Polam LMPR model, no longer requires this accessory. The Lomo Polam LMPR already has a special polarizing phase contrast disc condenser (somewhat similar to the Lomo KF-4 condenser).

In the last photo in the gallery you can see a page from the Lomo Polam microscope manual where this element is shown. In the manual it is shown in figure number 6, element number 65.
The complete instruction manual for the Lomo Polam microscope is available here: https://www.facebook.com/groups/102512763506243/?multi_permalinks=1858054457952056

Description of this part for the microscope.

special diaphragms was supplied. The set included phase contrast diaphragms and dark field diaphragms.

Note - I am showing and offering here one single diaphragm in holder - exactly the one visible in the photos. This is a phase contrast diaphragm (phase annulus). The complete set for the Lomo Polam microscope contains 5 diaphragms.

Important note:
Such diaphragms in a special holder, supplied as a set of five diaphragms, were an accessory for the Lomo Polam polarizing microscope. These diaphragms are mounted onto the polarizing microscope condenser in order to combine these observation techniques and obtain a phase image in polarized light. Please note that the same condensers can also be used in Lomo MIN series polarizing microscopes (for example Lomo MIN-6 or Lomo MIN-8 models) and in Lomo MIK series infrared microscopes (for example Lomo MIK-4). This means that there is nothing preventing the use of these phase annuli in those microscopes as well.

The newest version of the Lomo Polam microscope, namely the Lomo Polam LMPR model, no longer requires this accessory. The Lomo Polam LMPR already has a special polarizing phase contrast disc condenser (somewhat similar to the Lomo KF-4 condenser).

In the last photo in the gallery you can see a page from the Lomo Polam microscope manual where this element is shown. In the manual it is shown in figure number 6, element number 65.
The complete instruction manual for the Lomo Polam microscope is available here: https://www.facebook.com/groups/102512763506243/?multi_permalinks=1858054457952056

Description of this part for the microscope.

special diaphragms was supplied. The set included phase contrast diaphragms and dark field diaphragms.

Note - I am showing and offering here one single diaphragm in holder - exactly the one visible in the photos. This is a special diaphragm with a small light aperture. The complete set for the Lomo Polam microscope contains 5 diaphragms.

Important note:
Such diaphragms in a special holder, supplied as a set of five diaphragms, were an accessory for the Lomo Polam polarizing microscope. These diaphragms are mounted onto the polarizing microscope condenser in order to combine these observation techniques and obtain a phase image in polarized light. Please note that the same condensers can also be used in Lomo MIN series polarizing microscopes (for example Lomo MIN-6 or Lomo MIN-8 models) and in Lomo MIK series infrared microscopes (for example Lomo MIK-4). This means that there is nothing preventing the use of these phase annuli in those microscopes as well.

The newest version of the Lomo Polam microscope, namely the Lomo Polam LMPR model, no longer requires this accessory. The Lomo Polam LMPR already has a special polarizing phase contrast disc condenser (somewhat similar to the Lomo KF-4 condenser).

In the last photo in the gallery you can see a page from the Lomo Polam microscope manual where this element is shown. In the manual it is shown in figure number 6, element number 65.
The complete instruction manual for the Lomo Polam microscope is available here: https://www.facebook.com/groups/102512763506243/?multi_permalinks=1858054457952056

Description of this part for the microscope.

The light source is inserted into this housing (the standard light source in this model is an 8V 20W bulb). The entire housing is covered with dense metal fins acting as a heat sink to dissipate heat. At the end of this housing there is a condenser lens collimating the light beam and a dovetail mount. This mount is used to attach the condenser to the next element of the illumination path, namely the holder with a slot for insertable sliders.

The model designation MMU-3 is written using the Latin alphabet. When written in Cyrillic, this designation looks like MMY-3, and people unfamiliar with the Cyrillic alphabet may therefore refer to this microscope model in that way.

Interestingly, the dovetail connection used here has a diameter of 41.5 mm, which is the standard mounting diameter for accessories (for example microscope heads and intermediate tubes) not only in Lomo microscopes, but also in Carl Zeiss Jena, Romanian IOR, Czechoslovak Meopta and many other microscopes. For this reason, this lamp housing is sometimes used as an EPI reflected light source in various Carl Zeiss Jena microscope modifications.

In the last photograph, on the scanned page from the instruction manual of the Lomo MMU-1 microscope, an arrow indicates which element is being offered and where it is located in the microscope, allowing this part to be identified unambiguously.

Description of this part for the microscope.

with the Lomo Polam polarizing microscope. The set included phase contrast diaphragms and dark field diaphragms. Here I present and offer a complete set.

Important note:
Such diaphragms in a special holder were supplied as a set of five diaphragms as an accessory for the Lomo Polam polarizing microscope. These diaphragms are mounted onto the polarizing microscope condenser to obtain a combination of these techniques and a phase image in polarized light. Please note that the same condensers can also be used in polarizing microscopes of the Lomo MIN series (for example Lomo MIN-6 or Lomo MIN-8 models) and in microscopes designed for infrared light work from the Lomo MIK series (for example Lomo MIK-4). This means that there is nothing preventing the use of these phase rings in those microscopes as well.

The latest version of the Lomo Polam microscope, namely the Lomo Polam LMPR model, no longer requires this accessory. The Lomo Polam LMPR already features a dedicated rotating polarizing phase condenser (somewhat similar to the Lomo KF-4 condenser).

The last photo in the gallery shows a page from the Lomo Polam microscope manual where this microscope part is presented. In the manual it is shown in figure number 6, item number 65.

If you have such a set but it is incomplete - browse this database - you will also find individual diaphragms offered separately - specifically to solve such situations.