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:
May. 11, 2021
Filed:
Nov. 28, 2017
Applicant:
Facebook Technologies, Llc, Menlo Park, CA (US);
Inventors:
Evan M. Richards, Fremont, CA (US);
Kurt Allen Jenkins, Sammamish, WA (US);
Assignee:
Facebook Technologies, LLC, Menlo Park, CA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 3/08 (2006.01); B29D 11/00 (2006.01); B29C 33/30 (2006.01); G02B 5/09 (2006.01); B29C 33/42 (2006.01);
U.S. Cl.
CPC ...
G02B 3/08 (2013.01); B29C 33/302 (2013.01); B29C 33/42 (2013.01); B29D 11/00269 (2013.01); B29D 11/00865 (2013.01); G02B 5/09 (2013.01);
Abstract
An optical element includes a Fresnel surface including valleys between Fresnel segments. Compensation trenches disposed in the valleys are configured to accept excess of an optical layer received in the valleys during a deposition of the optical layer. The compensation trenches are filled with the optical layer.