Apparatus and method for optical coherence tomography

US9033506B2 · kind B2 · utility

Assignee

• WaveLight GmbH · DE

Inventors

• Christof Donitzky · Eckental, DE
• Klaus Vogler · Eckental, DE
• Christian Wuellner · Baiersdorf, DE
• Claudia Gorschboth · Koblenzer Straße, DE
• Michael Mrochen · Eglisau, CH

Key dates

• Filing date: Feb 15, 2011
• Grant date: May 19, 2015
• Expiry date: Feb 15, 2031

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61B5/0066
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

There is provided an apparatus for recording a depth profile of a biological tissue, in particular a frontal eye section of a human eye, according to the principle of optical coherence tomography, comprising a light source adapted to generate a bundle of light rays, an interferometer arrangement having a beam splitter device adapted to spatially separate the bundle of light rays into a reference beam and a measurement beam directed toward the tissue, a reference beam deflection device adapted to deflect the reference beam, a beam superpositioning device adapted to spatially superimpose the deflected reference beam onto the measurement beam deflected by the tissue into a superpositioned beam, and a detector arrangement for detecting information in the superpositioned beam associated with the difference of the optical path length of the reference beam and the measurement beam.