Light masked smart glazing
US9904136B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 25, 2015 |
| Grant date | Feb 27, 2018 |
| Priority date | — |
| Expiry date | May 14, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/13756
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A multiple-pane insulating glazing unit may include multiple panes of transparent material and a layer of electrically controllable optically active material that provides controllable privacy for the glazing unit. Despite efforts to fully black out the multiple-pane insulating glazing unit by switching the optically active material from a transmissive state to a privacy state, the glazing unit may exhibit some residual direct visible transmission. In some examples, the multiple-pane insulating glazing unit may include a light emitting element positioned to direct light at the layer of optically active material to address this issue. Light emitted by the light emitting element may reflect and mask residual visibility through the electrically controllable optically active material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.