Electro-optical device and electronic apparatus selectively reflecting and transmitting circularly polarized light having reverse rotation directions
US7995179B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 6, 2008 |
| Grant date | Aug 9, 2011 |
| Priority date | — |
| Expiry date | Oct 6, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/13718
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An electro-optical device includes, a first substrate, a second substrate, an electrooptic material layer, an illuminating device, and a polarizing device. The electrooptic material layer is held between the first substrate and the second substrate. The illuminating device irradiates illumination light to an outer surface of the first substrate. The polarizing device is provided on the outer surface of the first substrate. The electrooptic material layer exhibits optical isotropy when no electric field is applied, and, when an electric field is applied, exhibits optical anisotropy corresponding to the magnitude of the electric field. The electrooptic material layer further has a characteristic to selectively reflect a first circularly polarized light having a first rotation direction. Light that passes through the polarizing device is a second circularly polarized light that has a second rotation direction reverse to the first rotation direction of the first circularly polarized light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.