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:
Oct. 06, 2020
Filed:
Jul. 21, 2017
Applicant:
Sony Corporation, Tokyo, JP;
Inventors:
Thomas Dawson, Escondido, CA (US);
Steven Richman, San Diego, CA (US);
Assignee:
Sony Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03B 21/56 (2006.01); G03B 21/60 (2014.01); G02B 5/20 (2006.01);
U.S. Cl.
CPC ...
G03B 21/567 (2013.01); G02B 5/206 (2013.01); G03B 21/60 (2013.01);
Abstract
A multichromic filtering coating is applied to a projector screen to pass to the projector screen substrate only those wavelengths produced by the projector, to accentuate selective wavelengths of light to be reflected by the screen. The screen can be a passive black substrate or an active grayscale screen such as e-ink paper, and un-reflected light reaches the screen which selectively tunes its grayscale to accentuate the brightness or darkness of the color video image being projected onto it.