Patent · US Active

Device for interferometrically measuring the eye length and the anterior eye segment

US9161687B2 · kind B2 · utility

0Cited by

1References

17Claims

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	Dec 17, 2011
Grant date	Oct 20, 2015
Priority date	—
Expiry date	May 20, 2032

Classification

Technology area (CPC G)Physics
CPC primaryG01B9/02028
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

The invention relates to a solution for interferometrically measuring the eye length and the anterior eye segment after the optical axis of the measuring system has been aligned with the optical axis of an eye. The device according to the invention for interferometrically measuring the eye length and the anterior eye segment consists of an illumination source, at least one interferometric measuring array with external reference, diverse optical imaging systems, and a control and evaluation unit. The illumination source has high spatial coherence and low coherence of time. Preferably, light is emitted by the illumination device from the NIR range, having a wavelength of 700-1000 nm, for example. Furthermore, an optical imaging system is arranged in front of the eye such that the illumination light impinges on the eye as a nearly collimated beam.

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