Patent · US Active

Illumination device for a projector having a light modulator

US11137615B2 · kind B2 · utility

0Cited by

1References

18Claims

0Family size

Assignee

Carl Zeiss Jena GmbH · DE

Inventors

Peter Klopfleisch · Jena, DE
Dirk Doering · Erfurt, DE
Bryce Anton Moffat · Jena, DE
Alexander Gratzke · Jena, DE

Key dates

Filing date	Nov 14, 2019
Grant date	Oct 5, 2021
Priority date	—
Expiry date	Dec 3, 2039

Classification

Technology area (CPC G)Physics
CPC primaryG02B26/008
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

An illumination apparatus for a projector that includes a light modulator is provided. The illumination apparatus includes a first illumination module emitting first radiation, a second illumination module emitting second radiation, a light mixing rod extending in the axial direction and a superposition unit, which superposes the first and second radiation and couples this into the light mixing rod. The superposition unit includes a first imaging optical unit which focuses the first radiation into the light mixing rod such that a first focus is present, and a second imaging optical unit which focuses the second radiation into the light mixing rod such that a second focus is present. The first focus is spaced apart from the second focus in the axial direction.

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