Patent · US Expired

Illumination device and its use

US7270431B2 · kind B2 · utility

2Cited by

8References

24Claims

0Family size

Assignee

Carl Zeiss Jena GmbH · DE

Inventors

Michael Goelles · Jena, DE
Ralf Wolleschensky · Jena, DE
Dieter Graefe · Jena, DE
Matthias Wald · Jena, DE

Key dates

Filing date	Oct 19, 2004
Grant date	Sep 18, 2007
Priority date	—
Expiry date	Mar 16, 2025

Classification

Technology area (CPC G)Physics
CPC primaryG02B27/0977
WIPO fieldOptics
WIPO sectorInstruments

Abstract

To provide an illumination beam (5) which is essentially homogeneous in cross-section, in particular for a laser scanning microscope (15), an illumination device is used which provides an original beam which is essentially rotationally symmetric in cross-section and is incident at a converting unit which then transmits the desired illumination beam (5) and which comprises, for this purpose, an aspherical, convex mirror (1) which is more strongly curved in the area of the point of incidence of the original beam (3) than in the areas removed from the point of incidence.

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