# Part name:
Nikon E.100 1.25 oil 160/0.17 microscope objective 100x DIN RMS | Zeiss compatible

# Original page URL:
https://www.microscopeparts.eu/part/nikon-alphaphot-e-100-1-25-oil-160-0-17-microscope-objective-100x-din-rms-zeiss-compatible-91017

# Part manufacturer:
Nikon

# Full manufacturer name:
Nikon Instruments (Nikon Corp.)

# Belongs to category:
Objective

# Description and specifications:
Achromatic oil immersion microscope objective made by Nikon, with 100x magnification and a 45 mm parfocal length.

Manufacturer: Nikon (Japan)
Magnification: 100x
Colour correction: achromatic
Model: E. 100 1.25 oil 160/0.17
Numerical aperture N.A.: 1.25
Cover glass: yes, 0.17 mm thick
Thread: RMS
Tube length: 160 mm
Parfocal length: 45 mm (long barrel objective)
Immersion: yes, oil
Operating mode: objectives marked "E." are already CF objectives (CFN to be precise) and need no additional correction

This objective needs no additional correction from a tube lens or from the eyepieces. That makes it possible to fit it to microscopes of other makes, and in photomicrography it works in direct projection mode (it throws the image straight onto the camera sensor, with no relay optics needed).

This is the so-called black series of objectives, named after the black plastic barrel. They were used mainly in the Nikon Alphaphot YS2 microscope. That was the period when manufacturers were experimenting with a new look for microscope parts, and exactly the same black series appeared for instance in the Leitz / Leica HM-LUX 3 microscope or in the Will Wetzlar V300 / V355 / V365 microscopes.

This objective fits practically any microscope of any make, provided it has an RMS thread and supports objectives with TL = 160 mm and parfocal lengths of 33 / 37 and 45 mm. A few such microscopes are listed in the "compatibility" section, but that list is not complete.

# Examples of use
- if you have a Nikon Alphaphot YS2 microscope without a 100x objective and want to complete it with original parts
- if you are looking for a good-quality 100x objective for a microscope from another manufacturer
- if you already have such an objective, but it is of very poor quality and you want to replace it with a working one
- if you want to keep such objective in reserve

# Removed from microscope:
Nikon Alphaphot

# Also compatible with the following microscopes:
- Nikon Alphaphot
- Nikon Labophot
- Carl Zeiss Jena Eduval
- Carl Zeiss Jena Laboval
- Carl Zeiss Jena Amplival
- Carl Zeiss Jena Ergaval
- PZO Biolar
- PZO Studar
- Delta Optical Genetic Pro
- Olympus CH-2 CHS
- Olympus CHK
- Olympus CH-2 CHT
- Zeiss Standard Junior
- Zeiss KF 2
- Will Wetzlar V200
- Will Wetzlar V100
- Will Wetzlar V300
- Hund H600
- Hund H500
- Hund S200
- Leitz HM-LUX 3
- Leitz Laborlux S
- Leitz Dialux 20
- SWIFT (Japan) Collegiate 400
- AmScope T720Q
- AmScope T490
- AmScope B120c
- Optical N-117M
- Omax M82e
- Omax M83e
- Omax M837
- Leica HM-LUX 3

# Names, descriptions, terms, and search contexts under which this part is searched.
- Nikon Alphaphot microscope repair parts
- Nikon E 100 1.25 oil objective Alphaphot YS2
- Nikon Alphaphot YS2 Objektiv 100x Öl gesprungen
- Nikon 100x oil immersion objective RMS 160mm replacement
- Nikon Ölimmersionsobjektiv 100x 160/0.17 Ersatz kaufen
- Nikon E 100x objective front lens scratched
- Nikon schwarze Serie Objektiv 100x Kunststoffgehäuse
- Nikon 100x objective cleaning oil residue DIY
- Nikon Objektiv 100x für Leitz Leica HM-LUX 3
- Nikon 100x objective for Will Wetzlar V300 V365
- obiektyw imersyjny 100x Nikon do mikroskopu Alphaphot
- obiektyw mikroskopowy 100x Nikon olejowy zamiennik RMS
- Nikon CFN 100x objective no tube lens needed
- Nikon Objektiv 100x RMS Gewinde 45 mm parfokal
- imerzní objektiv 100x Nikon a Zeiss Jena
- objetivo 100x inmersión aceite para PZO Biolar
- objetivo 100x microscopio Carl Zeiss Jena
- obiettivo 100x a immersione per PZO Biolar
- obiettivo microscopio 100x Nikon olio 160/0.17
- Nikon Alphaphot YS Objektiv 100x wackelt Feder
- Nikon buy spare parts

# Related URLs:
- Markdown po polsku: https://www.serwismikroskopowy.pl/part/91017.md
- Markdown auf Deutsch: https://www.mikroskopteile.de/part/91017.md
- Gallery of all photos of this part: https://www.microscopeparts.eu/gallery/91017-nikon-alphaphot-e-100-1-25-oil-160-0-17-microscope-objective-100x-din-rms-zeiss-compatible
- Media manifest of this part (photos + videos, for AI/RAG): https://www.microscopeparts.eu/part/91017.media.md
- Representative photo: https://www.microscopeparts.eu/photo/nikon-alphaphot-e-100-1-25-oil-160-0-17-microscope-objective-100x-din-rms-zeiss-compatible-91017-2
- Representative video: https://www.microscopeparts.eu/play/91017-1
- Other parts from category Objective: https://www.microscopeparts.eu/objective
- More Objective removed from microscope Nikon Alphaphot: https://www.microscopeparts.eu/objective/from/nikon/alphaphot
- More Objective compatible with microscope Nikon Alphaphot: https://www.microscopeparts.eu/objective/for/nikon/alphaphot
- More Objective removed from microscopes Nikon: https://www.microscopeparts.eu/objective/from/nikon
- More Objective compatible with microscopes Nikon: https://www.microscopeparts.eu/objective/for/nikon

# 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: 2026-10-01