A micromirror device comprising: a mirror portion having a reflecting surface for reflecting incident light; a pair of first support portions that are connected to the mirror portion on a first axis (a 1 ) located in a plane including the reflecting surface of the mirror portion in a stationary state, and that swingably support the mirror portion around the first axis (a 1 ); a pair of movable frames that are connected to the first support portion and face each other across the first axis (a 1 ); a pair of second support portions that are connected to the movable frame on a second axis (a 2 ) which is located in the plane and is orthogonal to the first axis (a 1 ), and that swingably support the mirror portion , the first support portion , and the movable frame around the second axis (a 2 ); a driving portion that surrounds the movable frame ; a fixed frame that surrounds the driving portion; a pair of connecting portions that have a thinner thickness than the fixed frame and stretch along the first axis (a 1 ) or the second axis (a 2 ) to connect the driving portion and the fixed frame ; and four piezoelectric sensors each of which is formed of an upper electrode , a piezoelectric film , and a lower electrode , in which a shape and a position of the upper electrode are in a line-symmetrical relationship about the first axis (a 1 ) and the second axis (a 2 ), wherein, in a case where a stretching direction of the connecting portion is a first direction, a direction orthogonal to the first direction and located in the plane is a second direction, and a length of a boundary between the fixed frame and the connecting portion in the second direction is denoted by H, at least a part of each of the four piezoelectric sensors is within a range of H/2 in the second direction from an axis parallel to the first direction, out of the first axis (a 1 ) and the second axis (a 2 ), and is disposed on the fixed frame . a mirror portion having a reflecting surface for reflecting incident light; a pair of first support portions that are connected to the mirror portion on a first axis (a 1 ) located in a plane including the reflecting surface of the mirror portion in a stationary state, and that swingably support the mirror portion around the first axis (a 1 ); a pair of movable frames that are connected to the first support portion and face each other across the first axis (a 1 ); a pair of second support portions that are connected to the movable frame on a second axis (a 2 ) which is located in the plane and is orthogonal to the first axis (a 1 ), and that swingably support the mirror portion , the first support portion , and the movable frame around the second axis (a 2 ); a driving portion that surrounds the movable frame ; a fixed frame that surrounds the driving portion; a pair of connecting portions that have a thinner thickness than the fixed frame and stretch along the first axis (a 1 ) or the second axis (a 2 ) to connect the driving portion and the fixed frame ; and four piezoelectric sensors each of which is formed of an upper electrode , a piezoelectric film , and a lower electrode , in which a shape and a position of the upper electrode are in a line-symmetrical relationship about the first axis (a 1 ) and the second axis (a 2 ), wherein, in a case where a stretching direction of the connecting portion is a first direction, a direction orthogonal to the first direction and located in the plane is a second direction, and a length of a boundary between the fixed frame and the connecting portion in the second direction is denoted by H, at least a part of each of the four piezoelectric sensors is within a range of H/2 in the second direction from an axis parallel to the first direction, out of the first axis (a 1 ) and the second axis (a 2 ), and is disposed on the fixed frame . <EOS>