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. 02, 2013
Filed:
May. 29, 2009
Hendrik Adrianus Van Sprang, Eindhoven, NL;
Hendrik Johannes Boudewijn Jagt, Eindhoven, NL;
Berno Hunsche, Aachen, DE;
Thomas Diederich, Stolberg, DE;
Hendrik Adrianus Van Sprang, Eindhoven, NL;
Hendrik Johannes Boudewijn Jagt, Eindhoven, NL;
Berno Hunsche, Aachen, DE;
Thomas Diederich, Stolberg, DE;
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Abstract
The present invention relates to a LED module which converts pump light from a LED chip () to light at another wavelength, which is emitted from the module. The conversion takes place in a portion of a luminescent material (). The color purity of the LED module is enhanced by reducing any leakage of pump light using a reflector in combination with an absorber. In one embodiment, the absorber is integrated as one or several thin absorbing layers between the layers of a multi-layer reflection filter (); this may yield an even higher reduction of pump light leakage from the module.