Modular illumination equipment

US5136429A · kind A · utility

Assignee

• Jenoptik Jena GmbH · DE

Inventors

• Joachim Bergner · Jena, DE
• Burkhard Bufe · Jena, DE
• Hubert Wahl · Stadtroda, DE

Key dates

• Filing date: Apr 11, 1990
• Grant date: Aug 4, 1992
• Expiry date: Apr 11, 2010

Classification

• Technology area (CPC G): Physics
• CPC primary: G02B21/06
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

Modular illumination system for transmitted-light microscopes, embodying the Koehler illumination principle, and usable on microscopes of short or long optical transmission length, including a telecentering lens disposed in the light beam path defined according to Koehler between the luminous field diaphragm and the aperture diaphragm and imaging the luminous field diaphragm at infinity the telecentering lens is displaceable, preferably perpendicularly to the optical axis.