Lomo Biolam / MBB-1A KOH-3 microscope condenser | Abbe KON-3 N.A. 1,2 with iris diaphragm - photo gallery

This is description of this part:

Lomo microscope condenser with a numerical aperture of 1.2.

In the manufacturer's catalog this condenser is designated as KOH-3. This is a Cyrillic notation, 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.

What is this part needed for?

• if you have a Lomo microscope and want to use this condenser
• if you want to use this element in a microscope from another manufacturer with 74 mm mount diameter
• if you want to assemble a fully equipped microscope with as many accessories as possible and this condenser is missing from your set

What category does this part belong to?

Condensers [ link ] [More Condensers]

Who manufactures this part?

• Lomo - Leningrad Optical Mechanical Association [ link ] [More Lomo]
• LZOS
• TOMP
• WTOMP
• WOOMP
• GOMZ
• LOOMP
• Progres
• Progress

What microscope does this part come from?

Mikroskop Lomo Biolam [ link ] [More from Biolam]

What microscopes or components is this part compatible with?

• Lomo Biolam
• Lomo MBB-1
• Lomo Biolam-M
• Lomo M-9
• Lomo Biolam D11
• Lomo MBI-1
• Lomo MBR-3
• Lomo MBP-1
• Lomo Biolam 70
• Olympus CH-2 CHT
• Meopta DD 37 BN

Names, descriptions, terms, and search contexts under which this part is searched.

• Lomo Biolam microscope repair parts
• Lomo Biolam microscope condenser
• kondensor mikroskopowy Lomo
• Lomo MBB-1A Mikroskopkondensor
• Lomo Biolam Mikroskop Kondensor
• Kondensor für Bresser Biolam Mikroskop
• Mikroskop Kondensor mit 37 mm Durchmesser
• Irisblende bei Mikroskop Kondensor funktioniert nicht
• Lomo buy spare parts