Microscope with an autofocus arrangement having a variable magnification system

US5925874A · kind A · utility

Assignee

• Carl Zeiss Stiftung · DE

Inventors

• Jürgen Liegel · Oberkochen, DE
• Hartmut Wolf · Bellinghauserhohn, DE
• Dieter Quendt · Eßlingen, DE

Key dates

• Filing date: Jun 25, 1997
• Grant date: Jul 20, 1999
• Expiry date: Jun 25, 2017

Classification

• Technology area (CPC G): Physics
• CPC primary: G02B21/245
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

In a microscope with an objective, a variable magnification system and an autofocus arrangement, the autofocus arrangement produces a projection beam path for the projection of an autofocus marking onto an observation object, and an imaging beam path which passes through an objective, for imaging on a detector the autofocus marking projected onto the observation object. The projection beam path and/or the imaging beam path then passes through the variable magnification system outside its optical axis.