Dimming shutter combining guest-host liquid crystal and photochromic materials for augmented reality applications
US11815683B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 15, 2022 |
| Grant date | Nov 14, 2023 |
| Priority date | — |
| Expiry date | Apr 15, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2203/48
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A headset for augmented reality applications is provided. The headset includes at least one eyepiece configured to provide a see-through image to a user via a transparent optical component, and to provide an artificial image through a display, and a dimming shutter configured to adjust a transparency level of the transparent optical component. The dimming shutter further includes an active liquid crystal layer configured to adjust a transparency level according to an electrical power provided between two electrodes, and a photoactive layer configured to adjust the transparency level upon absorption of an ultraviolet radiation for a selected period of time. A default orientation of a host material in the active liquid crystal layer may be in a dark state or in a clear state, when no electrical power is provided. A method and a memory storing instructions to execute the method for use of the above device are also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.