Stereoscopic microscope for multiple observation

US4341435A · kind A · utility

Assignee

• Carl Zeiss Stiftung · DE

Inventors

• Walter Lang · Oberkochen, DE
• Ortwin Muller · Aalen, DE
• Alfons Neidlinger · Heidenheim, DE

Key dates

• Filing date: Nov 28, 1980
• Grant date: Jul 27, 1982
• Expiry date: Nov 28, 2000

Classification

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

Abstract

A stereoscopic microscope arranged for multiple observation, so that a surgical operation or other event may be observed simultaneously by two observers, or by one observer and a television apparatus. Three observation light paths are provided, with the centers of their respective entrance pupils lying at the three corners of a triangle. By splitting one beam, two pairs of stereoscopically related observation paths can be obtained. The pupil of the split light path has a diameter which is larger than the diameter of the pupil the other two light paths by a factor approximately equal to square root of two, so that both observers will see images of approximately equal brightness with their right and left eyes. Various specific arrangements of the observation light paths are disclosed.