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:
Jan. 18, 2022
Filed:
May. 19, 2020
Applicant:
Reald Inc., Beverly Hills, CA (US);
Inventor:
Ching-Chin Wu, Taipei, TW;
Assignee:
RealD, Beverly Hills, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03B 21/604 (2014.01); G03B 21/602 (2014.01); G03B 21/625 (2014.01); G03B 21/56 (2006.01); G03B 21/60 (2014.01); G03B 21/00 (2006.01);
U.S. Cl.
CPC ...
G03B 21/604 (2013.01); G03B 21/56 (2013.01); G03B 21/60 (2013.01); G03B 21/602 (2013.01); G03B 21/625 (2013.01); G03B 21/003 (2013.01);
Abstract
A projection screen for diffusing illumination light into a range of viewing angles is formed by depositing a coating on a substrate. Within the coating are particles having an average particle height. Protrusions at least two microns higher than the average particle height may be substantially uniformly distributed over the screen. In some embodiments, each protrusion may be no closer than 80 microns to another protrusion.