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.

removed from a Biolam microscope. If (unfortunately) you decide to 3D print it, you can find it here .

Description of this part for the microscope.

P3, P4, P5, and P6

"P" written in Cyrillic is the Latin "R," so you might see it written as:
- Lomo Biolam R1, R2, R3, R4, R5, and R6

...and, of course, the above models sold in Western Europe as "Bresser Biolam" and in the UK as "Zenith."

Here is a table comparing the models.

NOTE: This mechanism does not fit models where the fine movement is controlled by a knob built into the microscope base.

Description of this part for the microscope.

P2, P3, P4, P5, and P6

"P" written in Cyrillic is the Latin "R," so you might see it written as:
- Lomo Biolam R1, R2, R3, R4, R5, and R6

...and, of course, the above models sold in Western Europe as "Bresser Biolam" and in the UK as "Zenith."

Here is a table comparing the models.

NOTE: This mechanism does not fit models where the fine movement is controlled by a knob built into the microscope base.

Description of this part for the microscope.

removed from a MBP-3 microscope. If (unfortunately) you decide to 3D print it, you can find it here .

Description of this part for the microscope.

revolving nosepiece that gives you the audible, tactile click as you turn the objective revolver and that stops it in the right place. It is a plate with a recess into which the corresponding tooth drops.

This detent spring fits the objective nosepieces used in the following microscopes, among others:
- Lomo Erudit (ЛОМО Эрудит)
- Lomo Biolam 70
- Lomo Micmed 1
- Lomo Biolam Д1 / Д2 / Д3 (D series - portable)
- Lomo Biolam C1 / C2 / C3 (S series - for students)
- Lomo Biolam P1 / P2 / P3 / P4 / P5 / P6 / P7 (R series - working microscopes)

This detent spring also fits the objective revolvers from the Lomo Biolam models with the fine focus built into the base (these are the Biolam models with a two-digit model number, Дxx / Cxx / Pxx)
- Lomo Biolam Д11 / Д12 / Д13 (D series - portable)
- Lomo Biolam C11 / C12 / C13 (S series - for students)
- Lomo Biolam P11 / P12 / P13 / P14 / P15 / P16 / P17 (R series - working microscopes)

In addition, this detent spring fits the revolving nosepieces from the following microscopes:
- those sold in Germany under the names Bresser Biolam and Bresser Erudit, including the newest ones with illumination integrated into the base
- and the same microscopes sold in the United Kingdom under the name Zenith Biolam

Here you can see an objective nosepiece that this detent spring fits: https://www.microscopeparts.eu/part/99982.

You will find a comparison table of the first generation Lomo Biolam microscope models (with one digit in the model name) here: https://www.microscopeparts.eu/photo/99964-1.

You will find a comparison table of the second generation Lomo Biolam microscope models (with two digits in the model name) here: https://www.microscopeparts.eu/photo/99983-5.

You can read about the differences between the Lomo Erudit and the Lomo Biolam microscope here: https://www.microscopeparts.eu/microscope/lomo-erudit-207.

ЛОМО marked the series in Cyrillic letters, so the letter engraved on the microscope does not always mean what it seems to mean at first glance: Д stands for the Latin D, but the Russian C is read as S and the Russian P as R.

The same models in the notation used on Western markets:
- Lomo Biolam D-1 / D-2 / D-3
- Lomo Biolam S-1 / S-2 / S-3
- Lomo Biolam R-1 / R-2 / R-3 / R-4 / R-5 / R-6 / R-7
- Lomo Biolam D-11 / D-12 / D-13
- Lomo Biolam S-11 / S-12 / S-13
- Lomo Biolam R-11 / R-12 / R-13 / R-14 / R-15 / R-16 / R-17

Description of this part for the microscope.

head sits on the microscope body on a round aluminium dovetail (). The inner opening of this mount measures about 35 mm, while the angle prism inside the head () is only 17 mm wide (about 15 mm in effective width). To prevent artefacts such as reflections (flares) or a milky image, LOMO fitted a dedicated stop into the dovetail of the head, limiting the amount of light and shaping the beam that enters the head. This is the very part offered here.

Key data of this baffle:
Function: limiting the amount of light that reaches the prism inside the monocular head
Material: plastic
Colour: black
Outer diameter: 37 mm
Diameter of the inner opening: 13,5 mm
Fitting: pushed in from below into the mount of the monocular head - the part is press-fitted, not screwed in

Very important: this glare stop is made of very thin plastic. Over the years the material turns very (!) brittle - and that is why heads without this light stop turn up so often. For the same reason, unfortunately, you have to fit the insert into the head with great care, so that the plastic does not break during assembly.

With this black baffle missing, artefacts can appear that are visible to the naked eye or when taking photomicrographs with a camera or a mobile phone.

If the baffle is missing from the monocular tube of a Lomo Biolam microscope, putting one back in can help with the following problems:
- when the image is too milky, slightly soft and low in contrast. This may be caused by exactly that: too wide a beam reaching the prism. Note: the cause may also be eyepieces with too high a magnification
- when flares, reflections or overly bright areas show up in the image, especially in its centre. The cause may be light bouncing off the bare aluminium mount (the dovetail). The black glare stop covers precisely a part of that metal element.

Note: the newest microscopes of this class, especially those built after 1990 (later examples of the Lomo Micmed-1 as well as Bresser Biolam and Lomo Biolam with illumination built into the base), have a monocular head with an angular inclined tube. All older microscopes of this class have a head with a hemispherical inclined tube. The plastic glare stop offered here fits this ROUND version of the head (see the last photo in the gallery). The newer, angular heads do not have it.

So that you can tell exactly which version of the monocular head this black insert fits, the last two photos in the gallery show:
- the complete monocular head, with an arrow showing where the baffle sits inside it
- a close-up of the dovetail itself with the light stop in place

Monocular heads of this kind, the ones LOMO originally fitted these light baffles into, can be found in the following microscopes, among others:
- Lomo Erudit (ЛОМО Эрудит)
- Lomo Biolam 70
- Lomo Micmed-1
- Lomo Biolam Д1 / Д2 / Д3 / Д11 / Д12 / Д13 (D series - portable)
- Lomo Biolam C1 / C2 / C3 / C11 / C12 / C13 (S series - for students)
- Lomo Biolam P1 / P2 / P3 / P4 / P5 / P6 / P7 / P11 / P12 / P13 / P14 / P15 / P16 / P17 (R series - working microscopes)
- the microscopes sold in Germany under the names Bresser Biolam and Bresser Erudit, including the newest ones with illumination integrated into the base
- and the same microscopes sold in the United Kingdom under the name Zenith Biolam

Some of the microscope versions listed above were originally sold with the LOMO AU-12 binocular head, yet on the second-hand market they often turn up with monocular heads. That is exactly why I have listed them here.

ЛОМО marked the series in Cyrillic letters, so the letter engraved on the microscope does not always mean what it seems to mean at first glance: Д stands for the Latin D, but the Russian C is read as S and the Russian P as R.

The same models in the notation used on Western markets:
- Lomo Biolam D-1 / D-2 / D-3
- Lomo Biolam S-1 / S-2 / S-3
- Lomo Biolam R-1 / R-2 / R-3 / R-4 / R-5 / R-6 / R-7
- Lomo Biolam D-11 / D-12 / D-13
- Lomo Biolam S-11 / S-12 / S-13
- Lomo Biolam R-11 / R-12 / R-13 / R-14 / R-15 / R-16 / R-17

You will find a comparison table of the first generation Lomo Biolam microscope models (with one digit in the model name) here: https://www.microscopeparts.eu/photo/99964-1.

You will find a comparison table of the second generation Lomo Biolam microscope models (with two digits in the model name) here: https://www.microscopeparts.eu/photo/99983-5.