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. 21, 2016
Filed:
May. 28, 2012
Siebe Tjerk DE Zwart, Valkenswaard, NL;
Jochen Renaat Van Gheluwe, Lommel, BE;
Wilhelmus Petrus Adrianus Johannus Michiels, Reusel, NL;
Menno Van Baardwijk, Eindhoven, NL;
Fetze Pijlman, Eindhoven, NL;
Cornelis Gerardus Maria DE Haas, Nuenen, NL;
Siebe Tjerk De Zwart, Valkenswaard, NL;
Jochen Renaat Van Gheluwe, Lommel, BE;
Wilhelmus Petrus Adrianus Johannus Michiels, Reusel, NL;
Menno Van Baardwijk, Eindhoven, NL;
Fetze Pijlman, Eindhoven, NL;
Cornelis Gerardus Maria De Haas, Nuenen, NL;
KONINKLIJKE PHILIPS N.V., Eindhoven, NL;
Abstract
The invention relates to a luminaire that enables the use of more sparsely distributed light sources, having a uniform fixture surface brightness and good color mixing. The luminaire comprises first and second light guide layers () optically coupled together by at least one optical coupler (), which allows the passage of light from the first () to the second light guide layer (). The luminaire also comprises a plurality of light sources (), each of which being arranged such that light emitted by the light source () is coupled into the first light guide layer () at an interface surface ()arranged substantially perpendicularly to a longitudinal axis of the first light guide layer (). The luminaire further comprises a scattering element () adapted to cause light to be emitted from an emitting surface of the second light guide layer (). By providing two optically coupled light guide layers (), one for receiving light emitted by the light sources () and the other for emission, greater opportunity for dispersion and color mixing of the light is provided.