Projection display apparatus
US8330879B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 26, 2010 |
| Grant date | Dec 11, 2012 |
| Priority date | — |
| Expiry date | Jun 11, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2203/34
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A projection display apparatus includes a light source configured to emit light, at least one reflective liquid crystal device configured to generate an image by modulating a polarization of the light emitted from the light source and reflecting the light, an imaging lens configured to form a real image of the image generated by the reflective liquid crystal device, a quarter-wave plate disposed between the reflective liquid crystal device and the imaging lens, an image splitter configured to include at least one reflecting plane and spatially split the real image into at least two split real images by reflecting the real image on the reflecting plane, at least two projection lenses configured to form the split real images again on a screen, and a phase difference corrector configured to correct a phase difference between a p-polarized light and an s-polarized light generated by the reflecting plane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.