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:
Aug. 30, 1988
Filed:
Feb. 24, 1987
Wilhelmus A Gijzen, Eindhoven, NL;
Petrus J Blankers, Eindhoven, NL;
Petrus A Van Vroenhoven, Eindhoven, NL;
U.S. Philips Corp., New York, NY (US);
Abstract
The invention relates to an electro-optical device for optically scanning an information carrier, comprising a stationary frame, a movable optical holder, in which an objective having an optical axis is eccentrically mounted, a first electromagnetic actuator for translating the optical holder along a pivotal axis and a second electromagnetic actuator for pivoting the optical holder about this pivotal axis. Each of the actuators comprises a first actuator element secured to the frame and a second actuator element secured to the holder, the first and the second actuator elements cooperating with each other via air gaps. The optical holder is formed with a bore which extends parallel to the optical axis and in which the second actuator element of the second actutor is secured and in which the first actuator element which cooperate with said second actuator element extends with clearance. The second actuator element of the second actuator also functions as the balancing mass.