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:
Jun. 03, 2025
Filed:
Jul. 16, 2021
Applicant:
Meta Platforms Technologies, Llc, Menlo Park, CA (US);
Inventors:
Wai Sze Tiffany Lam, Redmond, WA (US);
Yijing Fu, Redmond, WA (US);
Assignee:
Meta Platforms Technologies, LLC, Menlo Park, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 27/01 (2006.01); F21V 8/00 (2006.01); G02B 5/30 (2006.01);
U.S. Cl.
CPC ...
G02B 27/0172 (2013.01); G02B 5/3083 (2013.01); G02B 6/0016 (2013.01); G02B 6/0028 (2013.01); G02B 6/0036 (2013.01); G02B 6/0076 (2013.01); G02B 2027/0178 (2013.01);
Abstract
An optical structure includes an input grating and a multilayer waveplate. The input grating is configured to incouple a first spectrum of received image light. The multilayer waveplate is configured to reflect the first spectrum of the image light incoupled by the input grating in the second polarization orientation and reflect a second spectrum of the image light incoupled by the input grating by diffraction in the first polarization orientation.