System for shifting at least one light spot
US7400436B2 · kind B2 · utility
8Cited by
6References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 2, 2004 |
| Grant date | Jul 15, 2008 |
| Priority date | — |
| Expiry date | Jan 22, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/1369
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The invention relates to a system for shifting at least one light spot (903), said system comprising: —a phase-modulator (906) for generating, from an input light beam, a light beam which is phase-modulated according to a controllable phase profile, —an array of apertures (902) for generating said at least one light spot (903) from said phase-modulated light beam, a change of the phase profile implying a shift of said at least one light spot (903). Use: Optical storage
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.