Optical systems with authentication and privacy capabilities
US11740465B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 9, 2021 |
| Grant date | Aug 29, 2023 |
| Priority date | — |
| Expiry date | Mar 29, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03H2001/266
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A head-mounted electronic device may include a display with an optical combiner. The combiner may include a waveguide with first and second output couplers. The first output coupler may couple a first portion of image light at visible wavelengths out of the waveguide and towards an eye box. The second output coupler may couple a second portion of the image light at near-infrared wavelengths out of the waveguide and towards the surrounding environment. The second portion of the image light may include an authentication code that is used by a secondary device to authenticate the head-mounted device and/or may include a pattern that serves to prevent camera equipment in the surrounding environment from capturing accurate facial recognition information from a user while wearing the head-mounted device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.