Anti-glare, privacy screen for windows or electronic device displays
US11353639B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 30, 2021 |
| Grant date | Jun 7, 2022 |
| Priority date | — |
| Expiry date | Aug 30, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F1/1609
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An array of microstructures or frustums on a substrate for reducing glare for electronic device displays or windows. The microstructures are designed to nearly perfectly align with the pixels on the display to avoid adverse viewing effects, such as Moiré effects. Substantially all light from the environment illuminating the front side of the film containing the microstructures from all angles is not reflected to the primary viewer (often viewing at an angle normal to the film). Light illuminating the microstructure from the environment will reflect off the microstructures at angles greater than a defined threshold outside the primary viewers field of view. Thus, glare to the primary viewer is minimized while glare to other views who view from other angles than the primary viewer is increased. This increased glare for other viewers adds privacy for the viewing by the primary viewer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.