Patent · US Active

Illumination device for a projector having a light modulator

US11281085B2 · kind B2 · utility

0Cited by

2References

19Claims

0Family size

Assignee

Carl Zeiss Jena GmbH · DE

Inventors

Marcus Heidkamp · Jena, DE
Dirk Doering · Erfurt, DE
Axel Krause · Lechenich, DE
Peter Klopfleisch · Jena, DE
Alexander Gratzke · Jena, DE
Bryce Anton Moffat · Jena, DE

Key dates

Filing date	Nov 14, 2019
Grant date	Mar 22, 2022
Priority date	—
Expiry date	Nov 14, 2039

Classification

Technology area (CPC G)Physics
CPC primaryG03B33/12
WIPO fieldOptics
WIPO sectorInstruments

Abstract

An illumination apparatus includes a first solid-state-based illumination module, a second solid-state-based illumination module, and a superposition unit, which couples first and the second luminescence radiation into an illumination beam path, in which said radiation is guided up to the end of the illumination beam path in order to illuminate a light modulator. A filter unit which filters light with a second color from the first luminescence radiation with a first color and from the second luminescence radiation such that light with the first and second color is present at the end of the illumination beam path.

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