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:
Dec. 25, 2012
Filed:
May. 05, 2008
Rene Theodorus Wegh, Eindhoven, NL;
Christoph Gerard August Hoelen, Eindhoven, NL;
Chantal Sweegers, Eindhoven, NL;
René Jan Hendriks, Eindhoven, NL;
Martijn Henri Richard Lankhorst, Eindhoven, NL;
Nicolas Gerardus Antonius Peeters, Eindhoven, NL;
Martinus Petrus Joseph Peeters, Eindhoven, NL;
Ramon Pascal Van Gorkom, Eindhoven, NL;
Matthijs Hendrik Keuper, Eindhoven, NL;
Coen Theodorus Hubertus Fransiscus Liedenbaum, Eindhoven, NL;
Rene Theodorus Wegh, Eindhoven, NL;
Christoph Gerard August Hoelen, Eindhoven, NL;
Chantal Sweegers, Eindhoven, NL;
René Jan Hendriks, Eindhoven, NL;
Martijn Henri Richard Lankhorst, Eindhoven, NL;
Nicolas Gerardus Antonius Peeters, Eindhoven, NL;
Martinus Petrus Joseph Peeters, Eindhoven, NL;
Ramon Pascal Van Gorkom, Eindhoven, NL;
Matthijs Hendrik Keuper, Eindhoven, NL;
Coen Theodorus Hubertus Fransiscus Liedenbaum, Eindhoven, NL;
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Abstract
The invention relates to a color-tunable illumination system (), to a lamp and to a luminaire. The color-tunable illumination system comprises a light source () emitting light of a first predefined color (B), and comprises a luminescent material () for converting light of the first predefined color into light of a second predefined color (A). The color-tunable illumination system further comprises shielding means () arranged for preventing at least part of the light emitted by the light source to impinge on the luminescent material. The light source, the luminescent material and/or the shielding means are changeable from a first situation to a second situation. In the first situation the color-tunable illumination system is arranged for shielding at least part of the luminescent material against impinging light of the first predefined color. In the second situation the color-tunable illumination system is arranged for shielding less of the luminescent material to the light of the first predefined color emitted by the light source compared to the first situation. The effect of the measures according to the invention is that the shielding means, luminescent material and/or the light source determine an amount of light of the second predefined color emitted by the color-tunable illumination system which determines a color of the color-tunable illumination system.