Stereoscopic projector with rotating segmented disk
US8066382B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 14, 2009 |
| Grant date | Nov 29, 2011 |
| Priority date | — |
| Expiry date | Jun 3, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N13/341
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A stereoscopic digital image projecting system has a light source system providing polarized illumination having a first polarization state and a beam splitting system with a rotating segmented disk in the illumination, alternately generating first and second light beams, the rotating segmented disk having outer segments alternately transmissive and non-transmissive and inner segments radially aligned with the outer segments and alternately reflective and transmissive. A polarization rotator in a path of either the first or second light beam rotates the first polarization state to a second state orthogonal to the first. A combining system combines the first and second light beams into a combined light beam. A spatial light modulator modulates the combined light beam in a manner consistent with stereoscopic image data to form first and second modulated images having substantially orthogonal polarization states. Projection optics project the modulated images onto a display surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.