Patent ID: 8879132
Filing Date: 2014-11-04
Classification: G02B

Abstract:
1. A mirror driving apparatus, comprising: a mirror section having a reflecting surface which reflects light; a pair of piezoelectric actuator sections arranged on either side of the mirror section; coupling sections which respectively connect one end of each of the piezoelectric actuator sections to an end portion of the mirror section which is distant from an axis of rotation of the mirror section in a direction along the reflecting surface and perpendicular to the axis of rotation; a fixing section which supports another end of each of the piezoelectric actuator sections, wherein, when the one end of each of the piezoelectric actuator sections is displaced, the displacement is transferred to the end section of the mirror section to rotate the mirror section, and the displacement of the piezoelectric actuator sections becomes larger with distance from the another end; and a perpendicular movement suppressing structure which suppresses translational motion of the axis of rotation of the mirror section in a direction perpendicular to the reflecting surface, one end of the perpendicular movement suppressing structure being connected to the fixing section and another end thereof being connected to the mirror section.