Electro-optical element
US5894363A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 24, 1997 |
| Grant date | Apr 13, 1999 |
| Priority date | — |
| Expiry date | Jul 24, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/3558
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An electro-optical element such as a light deflection element which allows high speed random accessing and can provide a large deflection angle and wherein a plurality of of functions can be integrated stably with a high degree of accuracy in a single element. The electro-optical element includes a ferroelectric substrate, electrodes provided on principal faces of the ferroelectric substrate, and function sections each having a polarization reversal domain formed in a predetermined shape in the ferroelectric substrate such that a light beam passes through the domain. The function sections may have a function of for converging at least part of the light beam, another function for diverging at least part of the light beam, a further function for deflecting a propagation direction of at least part of the light beam or/and a still further function for switching a propagation direction of at least part of the light beam, in response to a voltage applied to the electrodes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.