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:
Dec. 28, 2021
Filed:
Aug. 10, 2018
Applicant:
Facebook Technologies, Llc, Menlo Park, CA (US);
Inventors:
Assignee:
FACEBOOK TECHNOLOGIES, LLC, Menlo Park, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
G06F 3/01 (2006.01); G02B 27/01 (2006.01); G02F 1/01 (2006.01); G02B 27/00 (2006.01); F21V 8/00 (2006.01); A61B 3/11 (2006.01); G02B 27/42 (2006.01);
U.S. Cl.
CPC ...
G02B 27/0081 (2013.01); A61B 3/112 (2013.01); G02B 6/0016 (2013.01); G02B 27/0172 (2013.01); G02B 6/0035 (2013.01); G02B 27/4205 (2013.01); G02B 2027/0123 (2013.01); G02B 2027/0174 (2013.01); G02B 2027/0178 (2013.01);
Abstract
A pupil expander spatially modulates decoupling efficiency of light for pupil steering. The pupil expander can be used in a waveguide display, such as part of an artificial-reality display, to reduce power consumption of an optical source.