Patent · US Active

Apparatus and method for detecting the focal position of an optical system and opthalmological treatment apparatus

US7982169B2 · kind B2 · utility

6Cited by

7References

13Claims

0Family size

Assignee

WaveLight GmbH · DE

Inventors

Olaf Kittelmann · Berlin, DE
Peter Triebel · Jena, DE

Key dates

Filing date	Feb 20, 2007
Grant date	Jul 19, 2011
Priority date	—
Expiry date	Apr 18, 2027

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61F2009/00872
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

An apparatus and a method are presented for detecting the focal position of an optical system (10) with a radiation source (12), a focusing imaging system (16), an at least partially reflective surface (18) on the focus (18a), a digital camera (24) for recording an image reflected by said surface (18), a computer (C) for evaluating the image recorded by the camera (24), and with an optical element (34; 36) in the beam path of the optical system (10) upstream of the focusing imaging system (16), which element influences said image depending on the focal position.

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