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:
Jun. 04, 2019
Filed:
Apr. 22, 2016
Philips Lighting Holding B.v., Eindhoven, NL;
Dominique Maria Bruls, Eindhoven, NL;
Vincent Stefan David Gielen, Eindhoven, NL;
Georges Marie Calon, Eindhoven, NL;
Mohammad Mirsadeghi, Eindhoven, NL;
Leendert Van Der Tempel, Eindhoven, NL;
SIGNIFY HOLDING B.V., Eindhoven, NL;
Abstract
A light emitting device () comprising a first light source () and a second light source (), a luminescent element () comprising a first light input surface (), a second light input surface (), a light exit surface (), a first further surface () and a second further surface (), a first cooling assembly () and a second cooling assembly (), the first cooling assembly () comprising a first cooling element () and a first light source board () on which one of the light sources is mounted, and the second cooling assembly () comprising a second cooling element () and a second light source board (), on which the other one of the light sources is mounted, and the second cooling assembly () being arranged with a surface () in mechanical and thermal contact with the first further surface () of the luminescent element thereby forming a first interface and the first cooling assembly () being arranged with a surface () in mechanical and thermal contact with the second further surface () of the luminescent element thereby forming a second interface, the first interface and the second interface comprising a flatness of less than 10 μm, and the root mean squared surface roughness, R, of the first further surface () and the second further surface () of the luminescent element being comprised in the interval 1 μm<R<5 μm.