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Jeroen Wals, Joris Jan Vrehen, Sjoerd Stallinga: Optical wavefront modifier. Koninklijke Philips Electronics, Michael E Belk, September 10, 2002: US06449236 (11 worldwide citation)

An optical wavefront modifier modifies a wavefront of an optical beam passing through the modifier. The modifier comprises a first and a second transparent electrode layer and a flat medium for modifying the wavefront depending on electrical excitation of the medium and arranged between the electrod ...


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Joris Jan Vrehen: Optical scanning unit comprising a detection system for detecting the position of a movable element within the unit. Koninklijke Philips Electronics, Michael E Belk, July 22, 2003: US06596984 (2 worldwide citation)

In an optical unit for scanning an information plane having a track structure by means of a scanning spot, which unit is provided with a pivotable mirror for fast movement of the scanning spot perpendicular to the track direction, the angular position of the mirror is determined by means of a flat w ...


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Teunis Willem Tukker, Joris Jan Vrehen: Optical record carrier scanning device. CP Mahk Japan, McDermott Will & Emery, April 20, 2010: US07701832 (1 worldwide citation)

An optical scanning device scans optical record carriers, such as three optical record carriers, where each optical record carrier has an information layer having a depth which is different from the information layer depth of other optical record carriers, where d3


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Peter Coops, Joris Jan Vrehen, Robertus Johannes Heeman: Optical scanning device. Koninklijke Philips Electronics, Michael E Belk, August 29, 2006: US07099254 (1 worldwide citation)

An optical scanning device for scanning an optical record carrier includes a radiation source and a beam splitter arranged to pass a first portion of the source beam to the record carrier, and a second portion to an intensity sensor. A signal detector is arranged in the path of the beam reflected by ...


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Dirk Hente, Joseph Hendrik Anna Maria Jacobs, Elena Tiziana Ferrari, Ramon Rascal Van Gorkom, Petrus Johannes Bremer, Bertrand Johan Edward Hontele, Robert Cornelis Houtepen, Joris Jan Vrehen: Inductive power supply system. KONINKLIJKE PHILIPS, Larry Liberchuk, March 27, 2018: US09929598

A power supplying device is provided for providing electrical power to a power receiving device, the power supplying device comprising two plates, two electrode structures being arranged to be coupled to an AC power source and at least one power transmitter. Each electrode structure is attached to o ...


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Bernardus Hendrikus Wilhelmus Hendriks, Joris Jan Vrehen, Pascal Jean Henri Bloemen, Peter Coops: Optical scanning device. Koninklijke Philips Electronics, June 22, 2010: US07742381

The invention relates to an optical scanning device for scanning in a first mode a first information layer (111) of an information carrier and in a second mode a second information layer (112) of the information carrier. The optical scanning device comprises a radiation source (101) for generating a ...