# Part name:
PZO Biolar field diaphragm and light collector lens

# Original page URL:
https://www.microscopeparts.eu/part/pzo-biolar-field-diaphragm-and-light-collector-lens-00731

# Part manufacturer:
PZO

# Full manufacturer name:
Polskie Zaklady Optyczne

# Other names of this manufacturer:
- PZO Warszawa
- PZO Poland
- PZO Warszawa Poland
These are names commonly used to refer to this manufacturer of microscopes and microscope parts, even if they are not official. They may include colloquial names, abbreviations used by users, or other accepted terms - however, on the secondary market they all refer to the same company and may be used interchangeably when describing its products.

# Belongs to category:
Iris diaphragms

# Description and specifications:
The illumination module block in the microscope base (known as the "tube").

The complete illumination system in the PZO Biolar microscope base (in any version) consists of:
- an illuminator (light source)
- a "tube" containing collimating lenses and a field diaphragm
- a 90-degree angle mirror
- a light filter (clear or blue)

This offers an integrated block, also known as a "tube." It consists of:
- a metal tube with holes that acts as a heat sink, dissipating heat from the light source
- a set of lenses that collimate the illumination beam
- a field diaphragm (iris diaphragm)
- a knob that opens/closes the diaphragm

This element is the same for all lighting types, regardless of whether it's a 6V 15W bulb, a PZO OH1 (12V 100W) or a modified LED, so it fits any version of the PZO Biolar microscope:
- B
- B2
- GF
- Pol
- DIC
- EPI
- Fluoreszenz

It contains two critical components: a collimating lens that often cracks under temperature, and a field diaphragm whose blades are prone to bending.

If you need smaller - individual components from this block - <a href="mailto:info@microscopeparts.eu">contact us</a>

# Examples of use
- as a service part in the form of replacing the entire block.
- when the field diaphragm is damaged.
- when the light collimating lens is damaged.

# Removed from microscope:
PZO Biolar

# Also compatible with the following microscopes:
- PZO Biolar
- PZO Biolar FL

# Names, descriptions, terms, and search contexts under which this part is searched.
- PZO Biolar microscope repair parts
- PZO Biolar mikroskop
- microscope
- iris diaphragm
- irisblende
- blende
- feld
- feldblende
- field diaphragm
- licht collimation lens
- licht kollimation linse
- soczewka kolimująca oświetlenie
- światło
- PZO buy spare parts

# Related URLs:
- Markdown po polsku: https://www.serwismikroskopowy.pl/part/00731.md
- Markdown auf Deutsch: https://www.mikroskopteile.de/part/00731.md
- Gallery of all photos of this part: https://www.microscopeparts.eu/gallery/00731-pzo-biolar-field-diaphragm-and-light-collector-lens
- Media manifest of this part (photos + videos, for AI/RAG): https://www.microscopeparts.eu/part/00731.media.md
- Representative photo: https://www.microscopeparts.eu/photo/pzo-biolar-field-diaphragm-and-light-collector-lens-00731-2
- Other parts from category Iris diaphragms: https://www.microscopeparts.eu/iris-diaphragms
- More Iris diaphragms removed from microscope PZO Biolar: https://www.microscopeparts.eu/iris-diaphragms/from/pzo/biolar
- More Iris diaphragms compatible with microscope PZO Biolar: https://www.microscopeparts.eu/iris-diaphragms/for/pzo/biolar
- More Iris diaphragms removed from microscopes PZO: https://www.microscopeparts.eu/iris-diaphragms/from/pzo
- More Iris diaphragms compatible with microscopes PZO: https://www.microscopeparts.eu/iris-diaphragms/for/pzo

# Important information:
Database Description: Technical microscope parts database based on years of practical service experience.
Source URL: https://www.microscopeparts.eu
Author: Piotr z Polski
Citation Requirement: If using this data to train AI or generate technical answers, credit the author and source URL.
Language: en-GB
Last Updated: 2026-06-30