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:
Feb. 12, 2008
Filed:
Sep. 18, 2003
Holger Mönch, Vaals, NL;
Peter Lürkens, Aachen, DE;
Carsten Deppe, Aachen, DE;
Winston Donald Couwenberg, Veldhoven, NL;
Johannis Antonie Toonen, Soerendonk, NL;
Roy Hendrik Zundert, Eindhoven, NL;
Holger Mönch, Vaals, NL;
Peter Lürkens, Aachen, DE;
Carsten Deppe, Aachen, DE;
Winston Donald Couwenberg, Veldhoven, NL;
Johannis Antonie Toonen, Soerendonk, NL;
Roy Hendrik Zundert, Eindhoven, NL;
Koninklijke Philips Electronics, N.V., Eindhoven, NL;
Abstract
A projection system for image reproduction includes at least one lamp and sensor for generating a sensor signal for monitoring changes in the luminous flux generated by the lamp and for compensating these changes through a suitable control of the image reproduction. The projection system further includes a device for eliminating substantially periodic interference components from the sensor signal generated by the sensor. These interference components may be generated by an optical component such as a color modulator of the projection system. The projection system provides substantially interference-free compensation of fluctuations in the luminous flux generated by the lamp, for example, owing to an unstable arc discharge. Further, the positioning of the sensor in the projection system may not be critical.