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. 26, 2020
Filed:
Mar. 28, 2018
Applicant:
Facebook Technologies, Llc, Menlo Park, CA (US);
Inventors:
Zhang Jia, San Jose, CA (US);
Shizhe Shen, Foster City, CA (US);
Kurt Allen Jenkins, Sammamish, WA (US);
Assignee:
Facebook Technologies, LLC, Menlo Park, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
G02B 3/08 (2006.01); G02B 1/04 (2006.01); B05D 5/06 (2006.01); B05D 1/32 (2006.01); B05D 3/12 (2006.01); B05D 1/18 (2006.01); B05D 3/10 (2006.01); B29D 11/00 (2006.01); B05D 1/00 (2006.01); B29K 33/00 (2006.01);
U.S. Cl.
CPC ...
G02B 3/08 (2013.01); B05D 1/005 (2013.01); B05D 1/18 (2013.01); B05D 1/322 (2013.01); B05D 3/101 (2013.01); B05D 3/12 (2013.01); B05D 5/06 (2013.01); B29D 11/00269 (2013.01); B29D 11/00865 (2013.01); G02B 1/041 (2013.01); B29K 2033/12 (2013.01);
Abstract
A Fresnel optical element includes a Fresnel surface formed in a material. The Fresnel surface includes a plurality of Fresnel feature that include an active surface and a draft surface. A light absorptive layer is selectively disposed over the draft surface of the Fresnel features. The light absorptive surface is configured to absorb a majority of visible light encountering the light absorptive layer.