Light field generator devices with series output couplers
US10416468B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 28, 2018 |
| Grant date | Sep 17, 2019 |
| Priority date | — |
| Expiry date | Apr 11, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H9/02968
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Electro-holographic light field generator devices comprising surface acoustic wave (SAW) optical modulators are disclosed that employ multiple output couplers. These output couplers might be distributed along waveguides of the SAW modulators, within output coupling regions. Each of these output couplers can be configured for directing an incident leaky mode light at different output angles. In some cases, it may be desirable to employ the output couplers to function as different sub-pixels, to provide light to different viewing directions. The output couplers may be mirrors, volume gratings, chirped gratings, reflection gratings, two dimensional gratings, and/or transmission gratings. The output couplers may be angled so that the coupling output fans for each optical modulator are offset from the waveguide for that optical modulator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.