Patent · US Active

Optical system for a fundus camera

US8066374B2 · kind B2 · utility

6Cited by

6References

20Claims

0Family size

Assignee

Carl Zeiss Meditec AG · DE

Inventors

Ingo Koschmieder · Jena, DE
Manfred Dick · Gefell, DE
Detlef Biernat · Jena, DE
Jan Buchheister · Jena, DE
Lothar Mueller · Ottendorf, DE

Key dates

Filing date	Dec 18, 2007
Grant date	Nov 29, 2011
Priority date	—
Expiry date	Feb 23, 2028

Classification

Technology area (CPC G)Physics
CPC primaryG02B17/086
WIPO fieldOptics
WIPO sectorInstruments

Abstract

The invention is directed to an optical system for a fundus camera for reflection-free opthalmoscopy having a beam path with refractive and reflective optical elements which are used substantially in common for illumination and observation or recording. An imaging mirror system substantially comprising a plurality of reflecting optical elements in the form of mirrors and is provided for illuminating and imaging the fundus. At least one optical element, for example, mirror, is formed as a freeform mirror with an imaging, reflecting freeform surface. The optical elements are arranged in a housing in a precisely defined position and attitude relative to one another in such a way that an imaging of the reflecting surfaces of the optical elements on the image of the imaged retina is prevented within a wide diopter range of the patient's eye to be examined.

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