# Part name:
Union coated M5x N.A.0.10 T.L.170 microscope objective, metallurgical, Tokyo, Japan

# Original page URL:
https://www.microscopeparts.eu/part/union-mic-3-coated-m5x-n-a-0-10-t-l-170-microscope-objective-metallurgical-tokyo-japan-00640

# Part manufacturer:
Union

# Full manufacturer name:
Union Optical Co. Ltd. Tokyo (Japan)

# Belongs to category:
Objective

# Description and specifications:
Manufacturer: Union Tokyo (Japan)
Model: Coated M5x N.A.0.10 T.L.170
Magnification: 5x
Correction: Achromat
Numerical Aperture: 0.10
Tube Length: 170 mm
Focal Length: 33 mm (?)
Cover Glass: No
Immersion: No
Thread: RMS

This objective lens offers excellent optical quality. It has an anti-reflective coating, which significantly improves image quality.

This objective lens was originally designed for use in inverted metallurgical microscopes, but it can also be used in 170 mm biological microscopes (though many people use it in 160 mm microscopes).

# Examples of use
- If you have a Union microscope without objectives and need to upgrade it using original parts
- If you have a Union microscope that doesn't have an objective lens with this magnification and want to upgrade it
- If you have such an objective lens, but it's of very poor quality or damaged
- If you're cautious and want to have such an objective lens on hand
- If you're looking for a very good 5x objective lens for your microscope from another manufacturer
- If you're looking for a good quality lens with anti-reflective coating for macro photography

# Removed from microscope:
Union Mic-3

# Also compatible with the following microscopes:
- Union Mic-3
- Leitz SM
- Praktycznie każdy 170 Praktycznie każdy z TL = 170 mm
- ROW UFA 626
- ROW UFD 121
- ROW UFD 122
- Meopta DD 37 BN
- Kosmos Modell C

# Names, descriptions, terms, and search contexts under which this part is searched.
- Union Mic-3 microscope repair parts
- Mikroskop Objektiv
- obiektyw mikroskopowy
- lens
- glass
- soczewka
- microscope objective
- ROW Rathenow
- Leitz Wetzlar
- Meopta
- Union buy spare parts

# Related URLs:
- Markdown po polsku: https://www.serwismikroskopowy.pl/part/00640.md
- Markdown auf Deutsch: https://www.mikroskopteile.de/part/00640.md
- Gallery of all photos of this part: https://www.microscopeparts.eu/gallery/00640-union-mic-3-coated-m5x-n-a-0-10-t-l-170-microscope-objective-metallurgical-tokyo-japan
- Media manifest of this part (photos + videos, for AI/RAG): https://www.microscopeparts.eu/part/00640.media.md
- Representative photo: https://www.microscopeparts.eu/photo/union-mic-3-coated-m5x-n-a-0-10-t-l-170-microscope-objective-metallurgical-tokyo-japan-00640-2
- Other parts from category Objective: https://www.microscopeparts.eu/objective
- More Objective removed from microscope Union Mic-3: https://www.microscopeparts.eu/objective/from/union/mic-3
- More Objective compatible with microscope Union Mic-3: https://www.microscopeparts.eu/objective/for/union/mic-3
- More Objective removed from microscopes Union: https://www.microscopeparts.eu/objective/from/union
- More Objective compatible with microscopes Union: https://www.microscopeparts.eu/objective/for/union

# 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: 2026-08-10