Operation microscope having a small working distance

US4364629A · kind A · utility

Assignee

• Carl Zeiss Stiftung · DE

Inventors

• Walter Lang · Oberkochen, DE
• Franz Muchel · Oberkochen, DE

Key dates

• Filing date: May 12, 1980
• Grant date: Dec 21, 1982
• Expiry date: May 12, 2000

Classification

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

Abstract

The invention contemplates a modular system of interchangeable and multiply-combinable objective-lens components for selective use with an operation microscope to enable improved viewing of small operational areas, particularly in areas which are in deep channels or recesses. The construction permits optional use of the instrument in the context of stereoscopic or split-beam binocular viewing, or as an endoscope. Viewing is enhanced by efficient light transmission of both (a) the light used for object illumination and (b) the optical transmission of the image to be viewed.