Condenser system for microscopes

US5872651A · kind A · utility

Assignee

• Leica Mikroskopie und Systeme GmbH · DE

Inventors

• Rolf Krueger · Rockenberg, DE
• Hans-Werner Stankewitz · Wetzlar, DE
• Ute Gehrmann · Kandern, DE
• Peter Euteneuer · Biebertal, DE

Key dates

• Filing date: Oct 6, 1995
• Grant date: Feb 16, 1999
• Expiry date: Oct 6, 2015

Classification

• Technology area (CPC G): Physics
• CPC primary: G02B21/14
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

An exchangeable condenser system for a phase-contrast illuminating system (12) for microscopes has a plurality of different light rings (5), arranged on a nosepiece plate (4), assigned to the condenser optical system (6). The condenser optical system (6) can be exchanged independently of the light rings (5), the focal lengths F.sub.n of the exchangeable condenser optical systems (6) being selected relative to one another in the ratio F.sub.n =F.sub.0 *X.sup.n and the average diameters D.sub.n of the light rings (5) being selected relative to one another in the ratio D.sub.n =D.sub.0 *X.sup.n, where X>0, n=0,1,2,3, . . . .