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:
Feb. 07, 2023
Filed:
Mar. 01, 2022
Applicant:
Reald Spark, Llc, Beverly Hills, CA (US);
Inventors:
Ben Ihas, Boulder, CO (US);
Robert A. Ramsey, Boulder, CO (US);
Graham J. Woodgate, Henley-on-Thames, GB;
Jonathan Harrold, Leamington Spa, GB;
Michael G. Robinson, Boulder, CO (US);
Assignee:
RealD Spark, LLC, Beverly Hills, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02F 1/13 (2006.01); G02F 1/01 (2006.01); F21V 8/00 (2006.01);
U.S. Cl.
CPC ...
G02F 1/1323 (2013.01); G02B 6/0053 (2013.01); G02B 6/0068 (2013.01); G02F 1/0136 (2013.01);
Abstract
A display apparatus comprises at least one spatial light modulator and at least one curved view angle control element that comprises plural retarders arranged between the display polariser of each spatial light modulator, and an additional polariser. The curvature of the view angle control element provides increased luminance uniformity for a head-on user and increased visual security to an off-axis snooper.