Patent · US Active

Image generation unit and method to use an image generation unit

US7742217B2 · kind B2 · utility

2Cited by

2References

10Claims

0Family size

Assignee

Sony Deutschland GmbH · DE

Inventors

Markus Kamm · Karlsruhe, DE
Olivier Ripoll · Eßlingen, DE

Key dates

Filing date	Jun 14, 2006
Grant date	Jun 22, 2010
Priority date	—
Expiry date	Dec 30, 2026

Classification

Technology area (CPC H)Electricity
CPC primaryH04N9/3129
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

An image generation unit with an illumination unit for generating a plurality of coherent sub-beams and for illuminating an image modulator, including a light source, and a projection lens for superimposing each of the coherent sub-beams onto a projection screen plane. An optical set-up introduces angles between each two of the sub-beams, which are chosen to produce uncorrelated speckle patterns in the projection screen plane, resulting in an interference speckle pattern. A phase modulator including a liquid crystal cell changes its directory profile in a lateral manner, thereby being able to change the phase of light of each sub-beam individually.

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