Systems with adjustable window transmission
US12090821B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 30, 2021 |
| Grant date | Sep 17, 2024 |
| Priority date | — |
| Expiry date | Jun 30, 2041 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06B2009/2464
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A system such as a vehicle, building, or electronic device system may have a support structure with one or more windows. The support structure and window may separate an interior region within the system from a surrounding exterior region. Control circuitry may receive input such as user input and may adjust an adjustable layer in the window based on the input. The adjustable layer may be an adjustable light transmission layer. The adjustable light transmission layer may have a polymer matrix layer with embedded guest-host liquid crystal cells. Each cell may have liquid crystal material and dichroic dye. The adjustable light transmission layer may be operated in a dark state to prevent light from passing through the window, a clear state in which the window passes light, and intermediate states that exhibit intermediate light transmission levels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.