Microscope with light source

US6307690A · kind A · utility

Assignee

• Carl Zeiss Jena GmbH · DE

Inventors

• Norbert Czarnetzki · Jena, DE
• Thomas Scheruebl · Jena, DE
• Manfred Matthae · Jena, DE

Key dates

• Filing date: Mar 24, 2000
• Grant date: Oct 23, 2001
• Expiry date: Mar 24, 2020

Classification

• Technology area (CPC G): Physics
• CPC primary: G02B21/082
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

A microscope with incident light input coupling, wherein the light provided for the incident illumination is directed onto the partially reflecting layer of a beam splitter cube and is directed from there through the objective onto the specimen, while the light reflected and/or emitted by the specimen travels back to the partially reflecting layer and passes through the latter into the imaging beam path. In a microscope of this type, the beam splitter cube is provided with a negative spherical curvature at its outer surface facing the objective. Further, instead of the conventional tube lens, there is a combination formed of a converging lens and a diverging lens, wherein the surface curvatures of the converging lens and the diverging lens and the negative spherical curvature effected at the beam splitter cube are adapted to one another in such a way that the back-reflections of the incident illumination in the intermediate image plane are limited to a minimum.