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:
Sep. 02, 2008
Filed:
Aug. 13, 2007
Peter Menard, Arvada, CO (US);
Peter Menard, Arvada, CO (US);
OC Oerlikon Balzers AG, Balzers, LI;
Abstract
A magnetic actuator utilizes a single magnet and two voice coils to rotate a mirror between two angular positions with respect to a rest state. A magnetic field assembly applies magnetic flux across the voice coils. An upper plate and a lower plate are held together by a permanent magnet, so that each plate forms a magnetic pole. The voice coils are actuated by feeding current to their coils, resulting in an electromagnetic field being formed around the coils. The voice coils have magnetic flux passing across them, caused by the magnet and the two plates. Hence, the coils move upward or downward according to the current applied. A mirror holder includes a fixed periphery and moving arms attached to a torsional beam spanning the periphery. The arms are moved by the adjacent voice coils, twisting the torsional beam, and the attached mirror moves also.