Method and apparatus for azimuthal holographic multiplexing using elliptical reflector
US7742378B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 20, 2004 |
| Grant date | Jun 22, 2010 |
| Priority date | — |
| Expiry date | Apr 23, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03H2223/24
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method and an apparatus for recording at least two multiplexed holograms. Either an object beam or a reference beam is reflected from an aspherical reflecting surface. Either the reference beam impinging on a recording media at the selected storage location or the object beam impinging on the recording media at the selected storage location is rotated through a selected azimuthal angle about an axis that passes through a plane defined by the intersection of the object beam and the reference beam in the recording media, wherein an angle between the object beam and the reference beam impinging on the recording media is preserved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.