SS OCT interferometry for measuring a sample

US8632181B2 · kind B2 · utility

Assignee

• Carl Zeiss Meditec AG · DE

Inventors

• Daniel Bublitz · Glinde, DE
• Gerhard Krampert · Jena, DE
• Martin Hacker · Jena, DE

Key dates

• Filing date: Jun 12, 2009
• Grant date: Jan 21, 2014
• Expiry date: May 27, 2030

Classification

• Technology area (CPC G): Physics
• CPC primary: G01B2290/70
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

An SS OCT interferometry device for measuring a sample, in particular from an eye. The device interferometrically generates a measuring signal and from the signal a depth-resolved contrast signal of the sample by spectral tuning of the central wavelength of the measurement radiation of a measuring signal, and has a control unit for this purpose. The device includes a sample motion detector, which provides a motion signal indicating movement of or in the sample, the control unit uses the motion signal to correct the measuring signal with respect to measuring errors that are caused by a movement of or in the sample before or during the generation of the depth-resolved contrast signal.