Patent · US Active

Method and device for determining various biometric parameters of an eye by interferometry

US8965065B2 · kind B2 · utility

0Cited by

3References

18Claims

0Family size

Assignee

Carl Zeiss Meditec AG · DE

Inventors

Tobias Schmitt-Manderbach · Jena, DE
Daniel Bublitz · Glinde, DE
Roland Bergner · Jena, DE

Key dates

Filing date	Sep 15, 2011
Grant date	Feb 24, 2015
Priority date	—
Expiry date	Feb 1, 2032

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61B3/113
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

Determination of biometric parameters of an eye, in which the optical axis of the biometric measurement system is aligned to the optical axis of an eye. The device includes an interferometry measuring arrangement having a measurement light source and a measurement sensor, a fixation light source for capturing the eye with the reflexes that arise, an image sensor, and lens for detecting volume scattered light and an analysis unit for determining the angular deviation of the optical axis of the eye from the optical axis of the biometric measurement system. The analysis unit compares determined angular deviation to a predefined tolerance and, laterally displaces fixation marks on the basis of the calculated angular deviation, or of initiating the biometric measurement.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.