Patent · US Active

Apparatus for determining an ametropia of an eye

US9259152B2 · kind B2 · utility

2Cited by

2References

23Claims

0Family size

Assignees

Carl Zeiss Meditec AG · DE
Carl Zeiss AG · DE

Inventors

Markus Seesselberg · Aalen, DE
Tobias Breuninger · Bad Kissingen, DE
Marco Wilzbach · Stuttgart, DE

Key dates

Filing date	Dec 19, 2014
Grant date	Feb 16, 2016
Priority date	—
Expiry date	Dec 19, 2034

Classification

Technology area (CPC G)Physics
CPC primaryG02B21/0012
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

An apparatus for determining an ametropia of an eye 3 comprises a measurement light source 15 and beam formation optics 17 and an analysis module 35 comprising a detector 39 and analysis optics 37. The analysis optics are configured to focus a parallel light beam, entering through the optical interface 27, along a predetermined line extending transverse to a direction of the analysis beam path. The detector is a spatially resolving detector, wherein an acute angle between a surface normal of the detection area and the predetermined line is less than 80°. A controller 53 is configured to obtain light intensity data detected by the detector and to determine ametropia-data representing the ametropia of the eye based on the light intensity data.

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