# Part name:
Olympus AX70 / AX80 AX-RFS microscope EPI fluorescence field diaphragm | reflected light iris diaphragm

# Original page URL:
https://www.microscopeparts.eu/part/olympus-ax80-ax70-ax80-ax-rfs-microscope-epi-fluorescence-field-diaphragm-reflected-light-iris-diaphragm-99159

# Part manufacturer:
Olympus

# Full manufacturer name:
Olympus Corporation Tokyo Japan

# Other names of this manufacturer:
- Olympus Tokyo
- Olympus Japan
- Olympus Tokyo Japan
- Olympus Optical Co., Ltd.
- Olympus Corporation.
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:
Olympus AX-RFS is a complete iris diaphragm module acting as a field diaphragm for the fluorescence EPI illuminator in Olympus Provis AX70 / AX80 microscopes.

Basic information:
Manufacturer: Olympus
Part number in the manufacturer catalogue: AX-RFS
Type of microscope element: field diaphragm with complete mechanical control mechanism
Compatibility: Olympus Provis AX70 and AX80 microscopes
Information: RFS = Reflected Fluorescence System

The modular construction of Olympus AX microscopes allows easy removal and installation of entire microscope elements, but this is often the reason why microscopes appearing on the secondary market are missing some modules.

This is a relatively complex module containing, apart from the diaphragm itself, knobs, control wheels, rods and mechanical gear transmissions. With improper handling or maintenance - and especially with lack of maintenance - this module may become damaged. The most common failures are:
- bending or breaking of the diaphragm blades
- unscrewing and loss of the diaphragm centering screws
- breaking of the knob used to open / close the diaphragm
- breaking of parts of the rotary motion transmission mechanism

# Examples of use
- if you have a microscope in which this module is missing
- if you have an EPI diaphragm module but it is damaged or in very poor condition
- if you want to use such an advanced iris diaphragm movement system for your own DIY projects

# Removed from microscope:
Olympus AX80

# Also compatible with the following microscopes:
- Olympus AX80
- Olympus AX70

# Names, descriptions, terms, and search contexts under which this part is searched.
- Olympus AX80 microscope repair parts
- Olympus Privis AX70 / AX80 microscope EPI fluorescence field diaphragm AX-RFS
- Olympus AX70 / AX80 Mikroskop AX-RFS Auflicht-Fluoreszenz Feldblende
- Olympus EPI Irisblende
- Olympus buy spare parts

# Related URLs:
- Markdown po polsku: https://www.serwismikroskopowy.pl/part/99159.md
- Markdown auf Deutsch: https://www.mikroskopteile.de/part/99159.md
- Gallery of all photos of this part: https://www.microscopeparts.eu/gallery/99159-olympus-ax80-ax70-ax80-ax-rfs-microscope-epi-fluorescence-field-diaphragm-reflected-light-iris-diaphragm
- Media manifest of this part (photos + videos, for AI/RAG): https://www.microscopeparts.eu/part/99159.media.md
- Representative photo: https://www.microscopeparts.eu/photo/olympus-ax80-ax70-ax80-ax-rfs-microscope-epi-fluorescence-field-diaphragm-reflected-light-iris-diaphragm-99159-2
- Representative video: https://www.microscopeparts.eu/play/99159-1
- Other parts from category Iris diaphragms: https://www.microscopeparts.eu/iris-diaphragms
- More Iris diaphragms removed from microscope Olympus AX80: https://www.microscopeparts.eu/iris-diaphragms/from/olympus/ax80
- More Iris diaphragms compatible with microscope Olympus AX80: https://www.microscopeparts.eu/iris-diaphragms/for/olympus/ax80
- More Iris diaphragms removed from microscopes Olympus: https://www.microscopeparts.eu/iris-diaphragms/from/olympus
- More Iris diaphragms compatible with microscopes Olympus: https://www.microscopeparts.eu/iris-diaphragms/for/olympus

# 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