Patent · US Active

Photochromic optical element

US11320684B2 · kind B2 · utility

1Cited by

1References

14Claims

0Family size

Assignee

Facebook Technologies, LLC · US

Inventors

Jasmine Soria Sears · Redmond, US
Afsoon Jamali · Redmond, US
Yun-Han Lee · Hengshan, TW

Key dates

Filing date	Apr 21, 2020
Grant date	May 3, 2022
Priority date	—
Expiry date	Apr 21, 2040

Classification

Technology area (CPC G)Physics
CPC primaryG02F2202/14
WIPO fieldOptics
WIPO sectorInstruments

Abstract

An optical element includes a first boundary layer and a second boundary layer. A solution is disposed between the first boundary layer and the second boundary layer. The solution includes liquid crystals co-mingled with oblong photochromic dye molecules.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.