The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 25, 2022
Filed:
Jan. 30, 2019
Facebook Technologies, Llc, Menlo Park, CA (US);
Kenneth Diest, Kirkland, WA (US);
Andrew John Ouderkirk, Redmond, WA (US);
Gregory Olegovic Andreev, Redmond, WA (US);
Erik Shipton, Kenmore, WA (US);
Tanya Malhotra, Redmond, WA (US);
Barry David Silverstein, Kirkland, WA (US);
Christopher Yuan Ting Liao, Seattle, WA (US);
Facebook Technologies, LLC, Menlo Park, CA (US);
Abstract
A form birefringent optical element includes a structured layer and a dielectric environment disposed over the structured layer. At least one of the structured layer and the dielectric environment includes a nanovoided polymer, the nanovoided polymer having a first refractive index in an unactuated state and a second refractive index different than the first refractive index in an actuated state. Actuation of the nanovoided polymer can be used to reversibly control the form birefringence of the optical element. Various other apparatuses, systems, materials, and methods are also disclosed.