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:
Mar. 23, 2021
Filed:
Apr. 14, 2020
Applicant:
Leia Inc., Menlo Park, CA (US);
Inventors:
David A. Fattal, Mountain View, CA (US);
Ming Ma, Palo Alto, CA (US);
Xuejian Li, Menlo Park, CA (US);
Assignee:
LEIA INC., Menlo Park, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02F 1/13357 (2006.01); F21V 8/00 (2006.01); G02B 6/00 (2006.01);
U.S. Cl.
CPC ...
G02F 1/13362 (2013.01); G02B 6/00 (2013.01); G02B 6/005 (2013.01); G02B 6/0023 (2013.01); G02B 6/0043 (2013.01); G02B 6/0053 (2013.01); G02B 6/0056 (2013.01); G02B 6/0061 (2013.01); G02F 1/133615 (2013.01);
Abstract
A polarized backlight employs a light source configured to provide polarized light and a light guide to guide the polarized light. A polarization-preserving scattering feature optically coupled to the light guide is configured to scatter a portion of the guided polarized light out of the light guide as emitted polarized light. A polarization of the emitted polarized light is determined by a polarization of the guided polarized light.