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:
Apr. 23, 2024
Filed:
May. 04, 2020
Signify Holding B.v., Eindhoven, NL;
Barry Mos, Eindhoven, NL;
Michel Cornelis Josephus Marie Vissenberg, Roermond, NL;
Olexandr Valentynovych Vdovin, Maarheeze, NL;
Johannes Petrus Maria Ansems, Hulsel, NL;
Hugo Johan Cornelissen, Escharen, NL;
SIGNIFY HOLDING, B.V., Eindhoven, NL;
Abstract
A light guide () for a lighting device () is provided. The light guide () comprises an incoupling element () configured for receiving light and coupling the received light into the light guide (). The light guide () is configured to convey the received light within the light guide (). The light guide () comprises at least a first group and a second group of conically shaped outcoupling surface structures () distributed on, and recessed into or protruding from, a side () of the light guide (). Each conically shaped outcoupling surface structure () is configured for coupling of light out of the light guide (). Further, each conically shaped outcoupling surface structure () of the first group is geometrically characterized by a shape in accordance with a first cone or conical frustum () and each conically shaped outcoupling surface structure () of the second group is geometrically characterized by a shape in accordance with a second cone or conical frustum (). The first cone or conical frustum () has (i) a height () different from a height (h) of the second cone or conical frustum (), and (ii) a base diameter (bd) different from a base diameter (bd) of the second cone or conical frustum (). The first cone or conical frustum () has a height (h) to base diameter (bd) ratio in a range of 0.4 to 0.7. The second cone or conical frustum () has a height (h) to base diameter (bd) ratio in a range of 0.7 to 1.4.