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:
Mar. 08, 2005
Filed:
Sep. 10, 2001
Dirk Jan Broer, Eindhoven, NL;
Cornelis Antonius Van Den Heuvel, Eindhoven, NL;
Gerardus Gegorius Petrus Van Gorkom, Eindhoven, NL;
Dirk Jan Broer, Eindhoven, NL;
Cornelis Antonius Van Den Heuvel, Eindhoven, NL;
Gerardus Gegorius Petrus Van Gorkom, Eindhoven, NL;
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Abstract
A light valve for controlled transmission of light comprises first and second elements at least one of which is controllably movable into optical contact with the other element. Means are provided for projecting light on the first of the two elements on the side remote from the second of the two elements. Each facing side of the elements is provided with an interference filter layer, which interference filter layers, when being in optical contact with each other, have a transmission for light projected onto the light valve in a wavelength range determined by the interference filter layers. This transmission differs from the transmission that would occur in the case where the interference filter layers are not in optical contact with each other.