Patent · US Expired

Device for producing an image

US6964489B2 · kind B2 · utility

38Cited by

2References

19Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Heinrich-Jochen Blume · Darmstadt, DE
Kai Hohmann · Babenhausen, DE
Heinrich Noll · Groß-Umstadt, DE
Thomas Brohm · Eppertshausen, DE
Ralf Mayer · Weitra, AT

Key dates

Filing date	Oct 15, 2002
Grant date	Nov 15, 2005
Priority date	—
Expiry date	Apr 23, 2023

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S362/80
WIPO fieldOptics
WIPO sectorInstruments

Abstract

In a device for producing an image with a high light intensity by an image reproduction apparatus (9) which contains light valves, a light source comprising a light-emitting diode matrix (1, 2, 3) is provided for background lighting of the image reproduction apparatus (9). An optical device (5, 8, 10) for focussing and scattering the light which is produced by the light-emitting diode (1) is arranged between the light source (1, 2, 3) and the image reproduction apparatus (9).

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