Patent · US Expired

Projection arrangement for correcting for image distortions

US6935751B2 · kind B2 · utility

9Cited by

4References

16Claims

0Family size

Assignee

Carl Zeiss Jena GmbH · DE

Inventors

Gerd Rieche · Jena, DE
Gudrun Schröter · Jena, DE
Ralph Mende · Braunschweig, DE

Key dates

Filing date	Jun 4, 2002
Grant date	Aug 30, 2005
Priority date	—
Expiry date	Jun 4, 2022

Classification

Technology area (CPC H)Electricity
CPC primaryH04N5/7441
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

A projection arrangement is provided, comprising a light source (1), a light modulator (4), which is arranged following the light source (1) and onto which light from the light source (1) may be directed, said light being modulated by the light modulator (4) under the control of a control device (5) on the basis of predetermined image data, in order to generate an image, and projection optics (6) arranged following the light modulator (4) for projecting said image onto a projection surface (9), wherein the control device (5) comprises a control unit (15) and a correcting unit (16), said correcting unit (16) pre-distorting the predetermined image data such that a non-linear distortion caused by the projection optics (6) is compensated, and said control unit (15) controls the light modulator (4) by means of the pre-distorted image data.

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