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. 12, 2013
Filed:
Sep. 04, 2009
Petrus A. J. Holten, Aalten, NL;
Giorgia Tordini, Lyons, FR;
Vincent Fabriek, Enschede, NL;
Koninklijke Philips N.V., Eindhoven, NL;
Abstract
The invention relates to a luminaire () and an illumination system (). The luminaire according to the invention comprises a light exit window () for emitting light from the luminaire, and a reflective screen () arranged opposite the light exit window. The luminaire further comprises a light source () which is arranged for indirect illumination of the light exit window via the reflective screen. The light source is arranged near the light exit window on an imaginary plane P substantially parallel to the light exit window and emits light away from the light exit window. The luminaire further comprises a specularly reflective part () as part of the reflective screen, which specularly reflective part is concavely shaped for reflecting at least part of the light emitted by the light source towards a diffusely reflective part () of the reflective screen. The luminaire according to the invention has the effect that use of the specularly reflective part allows an improved controlled reflection of the portion of the light emitted by the light source towards the diffusely reflective part.