Optimized device for swept source optical coherence domain reflectometry and tomography

US9492077B2 · kind B2 · utility

Assignee

• Carl Zeiss Meditec AG · DE

Inventors

• Ralf Ebersbach · Schmölln, DE
• Martin Hacker · Jena, DE

Key dates

• Filing date: Jan 30, 2012
• Grant date: Nov 15, 2016
• Expiry date: Apr 29, 2032

Classification

• Technology area (CPC G): Physics
• CPC primary: G01B9/02091
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

Optimized device for swept source optical coherence domain reflectometry and tomography. In the coherence-optical device, light, with the aid of an interferometer, is used for distance-measuring and imaging purposes on reflecting and scattering areas of the human eye. The optimized device according to the invention consists of includes a tunable light source, matched to the sought-after measurement region ZOCT, with a resonator length LR, an interferometric measurement arrangement, a data capturing unit for capturing the light portions scattered back from the sample and a data processing unit. Here the resonator length LR of the tunable light source is matched not only to the sought-after measurement region ZOCT, but also to the entire interferometric measurement arrangement such that disturbance points present in the interferometric measurement arrangement cannot create disturbance signals in the sought-after measurement region ZOCT.