Patent · US Active

Holographic information display

US7936489B2 · kind B2 · utility

6Cited by

1References

16Claims

0Family size

Assignee

GM GLOBAL TECHNOLOGY OPERATIONS LLC · US

Inventors

Peter Brandt · Berghausen, DE
Heiko Charle · Gerolzhofen, DE
Daniel SAHLBOM · Mellerud, SE
Steven A. Stringfellow · Waterford Township, US

Key dates

Filing date	Feb 9, 2007
Grant date	May 3, 2011
Priority date	—
Expiry date	Feb 21, 2030

Classification

Technology area (CPC G)Physics
CPC primaryG03H2225/32
WIPO fieldOptics
WIPO sectorInstruments

Abstract

In a holographic heads-up display, a first set of data and a second set of data are provided. A three-dimensional image or scenery displaying the first set of data in a first layer and the second set of data in a second layer are created. The first layer is separated from the second layer by a specified distance. A hologram is determined, which corresponds to a recording of the scenery via a reference beam. A plurality of controllable phase delay elements are set according to the determined hologram. The hologram is reconstructed by illuminating the plurality of phase delay elements using a coherent light source. The light of the reconstructed hologram is directed into the visual field of a driver via a wind screen of a vehicle.

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