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. 19, 2017
Filed:
Dec. 12, 2013
Hamamatsu Photonics K.k., Hamamatsu-shi, Shizuoka, JP;
HAMAMATSU PHOTONICS K.K., Hamamatsu-shi, Shizuoka, JP;
Abstract
A mirror drive device is provided as one capable of efficiently gaining a driving force. The mirror drive devicehas a fixed frame; a movable portionsupported so as to be swingable relative to the fixed frame, through torsion barsextending on an identical straight line, and being of a circular shape; a mirrorarranged on a principal surfaceof the movable portion; and a permanent magnetforming a magnetic field around the movable portion; the movable portionhas a drive coilarranged below the mirror; the drive coilis of a 2n-sided polygon shape (where n is an integer of 3 or more) when viewed from a direction orthogonal to the principal surface, at least one side of which is orthogonal to a direction of the magnetic field F.