Holographic image projection systems
US8154780B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 15, 2008 |
| Grant date | Apr 10, 2012 |
| Priority date | — |
| Expiry date | Feb 20, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03H2210/20
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A holographic image projection system for projecting an image at an acute angle onto a surface includes: a spatial light modulator (SLM) to display a hologram; an illumination system to illuminate the displayed hologram; projection optics to project light from the illuminated displayed hologram onto the surface at an acute angle form the image; and a processor having an input to receive input image data for display and an output to provide hologram data for the SLM, wherein the processor is configured to: input image data and convert this to target image data; generate from the target image data hologram data for display as a hologram on the SLM to reproduce a target image; and wherein the target image is distorted to compensate for the projection of the hologram at an acute angle to form the image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.