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:
Jul. 25, 2023
Filed:
Jan. 20, 2022
Applicant:
Leia Inc., Menlo Park, CA (US);
Inventors:
David A. Fattal, Menlo Park, CA (US);
Ming Ma, Menlo Park, CA (US);
Assignee:
LEIA INC., Menlo Park, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F21V 8/00 (2006.01);
U.S. Cl.
CPC ...
G02B 6/003 (2013.01); G02B 6/005 (2013.01); G02B 6/0016 (2013.01); G02B 6/0036 (2013.01); G02B 6/0068 (2013.01);
Abstract
A collimated backlight and an electronic display employ a light guide having angle-preserving scattering feature and an absorption collimator. The angle-preserving scattering feature is configured to scatter a portion of guided light out of the light guide as emitted light. The absorption collimator includes an absorption element and is configured to convert light provided by a light source into collimated light to be guided as the guided light. The electronic display includes an array of light valves and may be configured as a multiview display or a privacy display.