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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.:

US 11269131 B1

PDFFull Text
Date of Patent:
Mar. 08, 2022

Filed:

Mar. 16, 2020

Liquid crystal reflective polarizer and pancake lens assembly having the same

Applicant:

Facebook Technologies, Llc, Menlo Park, CA (US);

Inventors:

Fenglin Peng, Redmond, WA (US);

Junren Wang, Redmond, WA (US);

Yuge Huang, Redmond, WA (US);

Lu Lu, Kirkland, WA (US);

Yusufu Njoni Bamaxam Sulai, Snohomish, WA (US);

Ying Geng, Bellevue, WA (US);

Jacques Gollier, Sammamish, WA (US);

Barry David Silverstein, Kirkland, WA (US);

Yu-Jen Wang, Menlo Park, CA (US);

Yun-Han Lee, Redmond, WA (US);

Assignee:

FACEBOOK TECHNOLOGIES, LLC, Menlo Park, CA (US);

Attorney:

Millburn IP PLLC

Primary Examiner:

Nathanael R Briggs

Int. Cl.
CPC ...
F21V 8/00 (2006.01); G02F 1/13363 (2006.01); G02F 1/1335 (2006.01); G02B 5/30 (2006.01); G02F 1/13357 (2006.01);
U.S. Cl.
CPC ...
G02B 6/0056 (2013.01); G02B 5/3016 (2013.01); G02B 5/3083 (2013.01); G02F 1/13362 (2013.01); G02F 1/133536 (2013.01); G02F 1/133541 (2021.01); G02F 1/133543 (2021.01); G02F 1/133636 (2013.01); G02F 1/133638 (2021.01); G02F 1/133615 (2013.01); G02F 2201/343 (2013.01); G02F 2413/02 (2013.01); G02F 2413/13 (2013.01);
Abstract

An optical device is provided. The optical device includes a first optical element configured to output an elliptically polarized light having one or more predetermined polarization ellipse parameters. The optical device also includes a second optical element including a birefringent material with a chirality, and configured to receive the elliptically polarized light from the first optical element and reflect the elliptically polarized light as a circularly polarized light.

Find Patent Forward Citations

Peng, Fenglin. (2022). Liquid crystal reflective polarizer and pancake lens assembly having the same (U.S. Patent No. 11269131). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/11269131

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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