SAW modulators and light steering methods
US11340513B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 5, 2020 |
| Grant date | May 24, 2022 |
| Priority date | — |
| Expiry date | Oct 5, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10N30/8542
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An electro-holographic light field generator device is disclosed. The light field generator device has an optical substrate with a waveguide face and an exit face. One or more surface acoustic wave (SAW) optical modulator devices are included within each light field generator device. The SAW devices each include a light input, a waveguide, and a SAW transducer, all configured for guided mode confinement of input light within the waveguide. A leaky mode deflection of a portion of the waveguided light, or diffractive light, impinges upon the exit face. Multiple output optics at the exit face are configured for developing from each of the output optics a radiated exit light from the diffracted light for at least one of the waveguides. An RF controller is configured to control the SAW devices to develop the radiated exit light as a three-dimensional output light field with horizontal parallax and compatible with observer vertical motion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.