# Part name:
Leica CLS 100 LED cold light source microscope illuminator

# Original page URL:
https://www.microscopeparts.eu/part/leica-cls-100-led-cold-light-source-microscope-illuminator-99472

# Part manufacturer:
Leica

# Full manufacturer name:
Leica Microsystems GmbH

# Other names of this manufacturer:
- Leica Wetzlar
- Reichert-Jung
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:
Illuminators

# Description and specifications:
Leica CLS 100 LED illuminator (light source) used for illuminating biological microscopes and, primarily, stereoscopic microscopes.

- Leica CLS 100 LED light source
- Leica P/N 633-20-002
- 24V power supply (220-240V - 24V transformer)
- built-in ON / OFF switch
- continuously variable brightness control
- LED lamp installed inside

Important for certain applications, this illuminator features passive cooling, meaning a heat sink instead of a fan. As a result, there are no vibrations that are often transferred to the workbench and then to the microscope specimen. This is particularly important when observing in-vivo specimens where the medium is a droplet of water. In such cases, vibrations generated by a fan can cause movement of objects (for example microorganisms) within the water droplet, resulting in a blurred image.

IMPORTANT: this listing includes only the light source - no fibre optic light guide or ring illuminator is included.

# Examples of use
- if you own such an illuminator but it has become damaged and you need a replacement
- if you already have a suitable fibre optic light guide or fibre optic ring (light-ring) and need a light source for it
- if you own an older halogen Leica CLS 100 model and would like to upgrade to LED
- if you need a compact light source for your own DIY project

# Removed from microscope:
Leica model

# Also compatible with the following microscopes:
Leica model

# Names, descriptions, terms, and search contexts under which this part is searched.
- Leica model microscope repair parts
- Leica stereo microscope LED light source
- Leica Mikroskop LED Kaltlichtquelle
- Leica CLS100LED illuminator
- Leica CLS 100 LED Beleuchter
- Leica buy spare parts

# Related URLs:
- Markdown po polsku: https://www.serwismikroskopowy.pl/part/99472.md
- Markdown auf Deutsch: https://www.mikroskopteile.de/part/99472.md
- Gallery of all photos of this part: https://www.microscopeparts.eu/gallery/99472-leica-cls-100-led-cold-light-source-microscope-illuminator
- Media manifest of this part (photos + videos, for AI/RAG): https://www.microscopeparts.eu/part/99472.media.md
- Representative photo: https://www.microscopeparts.eu/photo/leica-cls-100-led-cold-light-source-microscope-illuminator-99472-2
- Representative video: https://www.microscopeparts.eu/play/99472-1
- Other parts from category Illuminators: https://www.microscopeparts.eu/illuminators
- More Illuminators removed from microscope Leica model: https://www.microscopeparts.eu/illuminators/from/leica/model
- More Illuminators compatible with microscope Leica model: https://www.microscopeparts.eu/illuminators/for/leica/model
- More Illuminators removed from microscopes Leica: https://www.microscopeparts.eu/illuminators/from/leica
- More Illuminators compatible with microscopes Leica: https://www.microscopeparts.eu/illuminators/for/leica

# 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