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. 21, 2020
Filed:
Oct. 31, 2013
Applicant:
Cardinal Ig Company, Eden Prairie, MN (US);
Inventors:
Patrick Gayout, Villemomble, FR;
Emmanuel Mimoun, Paris, FR;
Assignee:
Cardinal IG Company, Eden Prairie, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02F 1/1334 (2006.01); B32B 17/10 (2006.01); C09K 19/54 (2006.01); G02B 5/02 (2006.01); G02F 1/1335 (2006.01); G02B 5/22 (2006.01);
U.S. Cl.
CPC ...
G02F 1/133509 (2013.01); G02B 5/22 (2013.01); G02F 1/1334 (2013.01);
Abstract
The invention relates to a glazing unit comprising a substrate coated with a variable light scattering system switching between a transparent state and a translucent state comprising a scattering layer able to scatter the incident light along scattering angles greater than the critical total internal reflection angle at the interface between the substrate and the air and at least one pair of elements absorbing visible light separated from one another at least by the scattering layer. The invention also relates to the use of said glazing unit as a projection or back-projection screen.