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. 23, 2013
Filed:
Apr. 23, 2008
Martinus Petrus Joseph Peeters, Eindhoven, NL;
Marcellus Jacobus Johannes Van Der Lubbe, Eindhoven, NL;
Elvira Johanna Maria Paulussen, Eindhoven, NL;
Daniel Anton Benoy, Eindhoven, NL;
Jan DE Graaf, Eindhoven, NL;
Martinus Petrus Joseph Peeters, Eindhoven, NL;
Marcellus Jacobus Johannes Van Der Lubbe, Eindhoven, NL;
Elvira Johanna Maria Paulussen, Eindhoven, NL;
Daniel Anton Benoy, Eindhoven, NL;
Jan De Graaf, Eindhoven, NL;
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Abstract
The invention relates to an illumination system (), a projection device, and a color wheel (). The illumination system comprises a light source comprising a first light-emitting unit () and a second light-emitting unit each emitting light towards a light output window (). The illumination system comprises the color wheel including a spoke () between two adjacent color segments. The system is configured to prevent the spoke when transiting the optical path () between the light source and the light output window to simultaneously transit a first optical path between the first light-emitting unit and the light output window and a second optical path between the second light-emitting unit and the light output window. The illumination system further comprises a drive unit () which is configured for switching off the first light-emitting unit during a time interval (p) when the spoke transits the first optical path.