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. 05, 2021
Filed:
May. 08, 2018
Merck Patent Gmbh, Darmstadt, DE;
Ties De Jong, Utrecht, NL;
Casper Van Oosten, Waalre, NL;
MERCK PATENT GMBH, Darmstadt, DE;
Abstract
The invention relates to a switchable optical device () having a layer structure comprising at least one switchable layer () and at least one optical layer (). The at least one switchable layer () comprises a liquid-crystalline material and at least one dye. The at least one optical layer () has at least one reflection band () which includes at least a first part of the visible spectrum and has at least one transmission band () which includes at least a second part of the visible spectrum. The absorption spectrum of the at least one switchable layer () is adjusted by means of the at least one dye such that the light transmission through the switchable optical device () for incident light in the visible light spectrum for at least one of the states of the switchable layer () is set to a predetermined transmission spectrum.