Optical device, display device, and three-dimension image display device for changing a polarization state of a light beam in time
US7495831B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 18, 2005 |
| Grant date | Feb 24, 2009 |
| Priority date | — |
| Expiry date | Jan 26, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B30/25
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical element, an optical device, and a display device are disclosed that are able to change a polarization state in time order and to produce polarized light with little wavelength dependence and superior in polarization purity, and able to perform pixel shift easily and accurately to realize high resolution image display. The optical element has a translucent surface parallel to the rotational axis of the optical element, and at least a portion of the translucent surface is formed from an optically anisotropic medium. A polarization state of a light beam transmitting through the translucent surface is switched in time order along with rotation of the optical element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.