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:
May. 19, 1981
Filed:
Jun. 21, 1979
Yositugu Araki, Tokorozawa, JP;
Universal Pioneer Corporation, Tokyo, JP;
Abstract
A movable mirror device for an optical information recording and reproducing system has a base portion with a bottom section and an up-standing section extending from the bottom section. A permanent magnet having opposite magnetic poles at opposite ends thereof is fixedly mounted on the bottom section of the base portion. A pair of yokes have their ends engaged with opposite ends of the magnet, respectively. A plate member is supported by the up-standing section of the base portion disposed between the other ends of said yokes and a movable portion having a core. A mirror substrate is supported by an end plate formed on one end of the core and a mirror is fixed to the mirror substrate. A supporting portion provided on the other end of said core pivotally supports the core with respect to the up-standing section and a coil portion is wound around the mirror substrate. The movable portion is disposed such that the coil portion of the movable portion is disposed in a magnetic field formed in gaps between the plate member and the other ends of the yokes.