Parallax barrier, display, passive polarization modulating optical element and method of making such an element
US6437915B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 10, 2000 |
| Grant date | Aug 20, 2002 |
| Priority date | — |
| Expiry date | Feb 10, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N13/363
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A parallax barrier includes a polarization modifying layer having aperture regions, for supplying light of a second polarization when receiving light of a first polarization, separated by barrier regions, for supplying light of a third polarization different from the second polarization when receiving light of the first polarization, and a polarizer selectively operable in a first mode and a second mode. At least one of the aperture regions and the barrier regions alters the polarization of light passing therethrough. The polarizer passes light of the second polarization and blocks light of the third polarization in the first mode and passes light of the third polarization in the second mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.