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. 08, 2014
Filed:
May. 27, 2010
Erno Fancsali, Eindhoven, NL;
Willem Hendrik Smits, Eindhoven, NL;
Pascal Jean Henri Bloemen, Eindhoven, NL;
Erno Fancsali, Eindhoven, NL;
Willem Hendrik Smits, Eindhoven, NL;
Pascal Jean Henri Bloemen, Eindhoven, NL;
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Abstract
The invention relates to a light emitting device () comprising a primary light source (), a light converting medium () and an optical structure (). The primary light source is disposed on a substrate (). The light converting medium comprising phosphors () is arranged for converting at least a part of the primary light to secondary light (II) of a different wavelength. The light converting medium is in a remote phosphor configuration. The optical structure is arranged for receiving a part of the secondary light (II) from the light converting medium and is configured for redirecting the part of the secondary light in a direction towards the first plane but away for the primary light source (). By providing an optical structure redirecting the secondary light away from the primary light source, absorption of the secondary light by the primary light source can be substantially reduced or eliminated. The luminous efficacy is improved by redirecting this secondary light in a direction such that it is transmitted from the light emitting device.