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:
Jan. 03, 1989
Filed:
Apr. 13, 1988
Antonius A van Alem, Eindhoven, NL;
Gerard E van Rosmalen, Eindhoven, NL;
U.S. Philips Corporation, New York, NY (US);
Abstract
An electro-optical device is able to follow the information structure (2) of a moving information carrier (3) with a radiation spot 17 in two directions, of which one extends in a plane perpendicular to the other. A lens system (5) is fixed in a lens mounting (9) which relative to a frame (4) may perform pivotal movements about a pivotal axis (10) parallel to the optical axis (6) of the lens system and translational movements along the pivotal axis (10) by means of electromagnetic actuator means (14, 13) which are symmetrically located with respect to the pivotal axis. The lens mounting (9) is of elongate form and its parts which are situated on opposite sides of the pivotal axis (11) have substantially the same mass and mass distribution.