Koninklijke Philips Corporation N.v.

Michael Adrianus Henricus Van Der

Johannes Joseph Hubertina Barbara Schleipen

Willem Gerard Ophey

Gerard Johannes Pieter Nijsse

Frank Cornelis Penning

Gerardus Lucien Mathildus Jansen

Aukje Arianne Annette Kastelijn

An optical scanning device for scanning an information layer of an optical record carrier and including a rotary aim () which is arranged to swing about a rotation axis (CR) to alter an angular position of the rotary arm about the rotation axis; a detector arrangement () arranged separate from the rotary arm () for detecting a radiation beam spot, the radiation beam spot () having an angular disposition; a first reflective surface () attached to the rotary arm (); a second reflective surface () attached to the rotary arm (); a first light path (LP; LPO; LP; LP; LP; LP; running from a location on the record carrier to said first reflective surface; a second light path (LP; LP; LP; LP; LP; LP) running from said first reflective surface to said second reflective surface; a third light path (LP; LP; LP; LP; LP; LP) running from said second reflective surface to said detector arrangement (). The rotary arm includes at least one optical inversion element () arranged such that a dependence between variation of the angular disposition of the radiation beam spot and variation of the angular position of the rotary arm is reduced.

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Eindhoven, Netherlands

Michael Adrianus Henricus Van Der