Patent · US Expired

Optical system for imaging the light from light sources

US5307208A · kind A · utility

3Cited by

4References

16Claims

0Family size

Assignee

Optische Werke G. Rodenstock · DE

Inventors

Engelbert Hofbauer · Pfeffenhausen, DE
Ingrid Schehrer · Munich, DE
Jakob Bleicher · Munich, DE
Siegfried Hetz · Freising, DE
Ulrich Matern · Bollschweil, DE

Key dates

Filing date	Nov 19, 1990
Grant date	Apr 26, 1994
Priority date	—
Expiry date	Nov 19, 2010

Classification

Technology area (CPC G)Physics
CPC primaryG02B27/0972
WIPO fieldOptics
WIPO sectorInstruments

Abstract

An optical system for imaging the light from light sources having varying astigmatic differences of focus in different planes, having an optical element with an astigmatic effect and having an imaging lens system, the optical element having an astigmatic effect being provided with two lens components, the distance of which in the direction of the optical axis can be adjusted in order to correct astigmatic differences of focus varying from light source to light source and/or changing astigmatic differences of focus due to aging.

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