Stereomicroscope

US4518231A · kind A · utility

Assignee

• Carl Zeiss Stiftung · DE

Inventors

• Franz Muchel · Oberkochen, DE
• Fritz Strahle · Heubach, DE

Key dates

• Filing date: May 2, 1983
• Grant date: May 21, 1985
• Expiry date: May 2, 2003

Classification

• Technology area (CPC G): Physics
• CPC primary: G02B21/22
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

A stereomicroscope in which the axes of the two stereo channels are guided in parallel behind the objective assembly. Two different embodiments of the objective assembly are disclosed. One embodiment contains a common main objective for both individual stereoscopic pencils as well as a pair of wedge prisms of dispersive action to correct for the chromatic aberration in the direction of the stereo base which is produced as a result of the eccentric passage of the individual pencils through the objective. The second embodiment comprises a pair of individual objectives (Greenough type) which are inclined to each other, as well as a pair of a chromatic wedge prisms in order to adapt the angle of inclination of the objectives to the parallel passage of the beam in the tube.