| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a mirror device in which a movable part can rotate (oscillate) around a first axis, the device capable of preventing separation of a magnet and increasing magnetic flux density of a magnetic field acting on the magnet by forming a magnetic path, and to provide a method for manufacturing the mirror device, an optical scanner and an image formation apparatus. <P>SOLUTION: A mirror device 1 comprises: a movable plate 11 having a light-reflective light reflection part 12; a pair of shaft members 13a, 13b; a permanent magnet 20 provided for the movable plate 11, disposed in a way that a first axis passes transversely between both poles; a solder layer 21 made of solder, interposed between the movable plate 11 and the permanent magnet 20 to bond the movable plate 11 and the permanent magnet 20; and a ground layer 22 interposed between the movable plate 11 and the solder layer 21, having higher solder wettability than the movable plate 11, and including a soft magnetic material. The ground layer 22 encloses the permanent magnet 20 in planar view of the movable plate 11, and at least part of the ground layer 22 is projecting from the permanent magnet 20. <P>COPYRIGHT: (C)2013,JPO&INPIT |
