Ophthalmic surgical system

US7845798B2 · kind B2 · utility

Assignees

• CARL ZEISS SURGICAL GMBH · DE
• Carl Zeiss AG · DE

Inventors

• Christoph Kuebler · Oberkochen, DE
• Daniel Bublitz · Glinde, DE
• Markus Seesselberg · Aalen, DE

Key dates

• Filing date: Dec 22, 2009
• Grant date: Dec 7, 2010
• Expiry date: Dec 22, 2029

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61F2009/00848
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A system includes an optical system having two beam splitters (a dichroic beam splitter and a polarizing beam splitter), which are designed to provide three separate beam paths for observing an object. The dichroic beam splitter is designed to separate two beam paths depending on the wavelength of the light of the respective beam path. The polarizing beam splitter is designed such that two beam paths are separated depending on a direction of polarization of the light of the respective beam path. The measuring light is linearly polarized after having passed the polarizing beam splitter and may be influenced with respect to the state of polarization by a retarding plate. The returning measuring light incident on the polarizing beam splitter is linearly polarized and also polarized in such a direction that the returning measuring light is transported through the polarizing beam splitter towards the analyzing detector with a high efficiency.