Patent · US Expired

Ophthalmoscope

US5268711A · kind A · utility

11Cited by

2References

21Claims

0Family size

Assignee

Carl Zeiss Stiftung · DE

Inventors

Martin Poxleitner · Königsbronn, DE
Gerhard Gaida · Aalen, DE

Key dates

Filing date	Jan 21, 1992
Grant date	Dec 7, 1993
Priority date	—
Expiry date	Jan 21, 2012

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61B3/1225
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

The invention is directed to an ophthalmoscope and especially a confocal raster ophthalmoscope wherein the scanning unit can be imaged on the pupil of the eye with different imaging scales. The switchover between the imaging scales is realized by a displacement of a spherical concave mirror of the ophthalmoscope. The astigmatism of the concave mirror is changed because of the changed imaging scale and is compensated in that the displacement of the concave mirror has a displacement component perpendicular to the main axis of this mirror.

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