Variable transmission window with blackout bars
US10295837B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 21, 2016 |
| Grant date | May 21, 2019 |
| Priority date | — |
| Expiry date | Jun 30, 2037 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29K2995/0018
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A variable transmission window includes a patterned first polarizer and an opposing patterned second polarizer. The first polarizer includes an optically transmissive first substrate; alternating first and second domains attached to the first substrate, the first domains having a polarization axis that is perpendicular to a polarization axis of the second domains; and blackout bars configured to block visible light, each blackout bar overlapping opposing edge regions of adjacent corresponding first and second domains. The second polarizer includes an optically transmissive second substrate; and alternating third and fourth domains attached to the second substrate, the third domains having a polarization axis that is perpendicular to a polarization axis of the fourth domains. The second polarizer may also include blackout bars overlapping opposing edge regions of adjacent corresponding third and fourth domains.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.