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:
Nov. 10, 2015
Filed:
Jul. 10, 2013
Koninklijke Philips N.v., Eindhoven, NL;
Wiebe Wagemans, Eindhoven, NL;
Floris Maria Hermansz Crompvoets, Bunde, NL;
Marc Matysek, Hofheim, DE;
KONINKLIJKE PHILIPS N.V., Eindhoven, NL;
Abstract
The invention relates to a diffuser () for use in a lighting device. The diffuser () comprises an at least partially transparent first layer () and an adjoining at least partially transparent second layer (), the first layer being continuous and comprising a stretchable elastomer, the second layer being a segmented layer comprising a material with a high effective stiffness measured as the product of the thickness of the material and the elastic modulus of the material. The second layer () comprises a non-periodic pattern of segments () having different dimensions. The diffuser is stretchable between a first position in which the first layer is in a non-stretched state and the segments of the second layer are arranged adjacent each other such as to form a substantially continuous layer, and a second position in which the first layer is stretched out and the segments of the second layer are separated from each other such that part of the first layer is exposed.