MOVABLE REFLECTIVE ELEMENT AND TWO-DIMENSIONAL SCANNING DEVICE

摘要

Each of a pair of actuator portions (140) is disposed at both sides of a movable frame (120) along the X-axis direction, and deformed by the expansion and the contraction of a piezoelectric element to cause the movable frame (120) to pivot about the X-axis relative to a fixed frame (110). Each of a pair of actuator portions (150) is disposed at both sides of a mirror portion (130) along the Y-axis direction, and deformed by the expansion and the contraction of a piezoelectric element to cause the mirror portion (130) to pivot about the Y-axis relative to the movable frame (120). The length of the section of actuator portion (140) extending along the Y-axis direction is longer than the distance along the Y-axis direction from the midpoint of the outer side of the movable frame (120) to the inner side of the fixed frame (110) to which the actuator portion (140) is connected.