Dust removing device, manufacturing method for same, and image pickup apparatus

A dust removing device including a vibration plate and piezoelectric elements disposed on the vibration plate, wherein the vibration plate includes an optical effective region B having a substantially right-angled quadrate shape and an outer region A positioned outside the optical effective region B, wherein the piezoelectric element includes a substantially rectangular parallelepiped piezoelectric material, and a first electrode and a second electrode disposed on the piezoelectric material to face each other, wherein given that four sides of the optical effective region B are denoted by a pair of sides O and O′ and a pair of sides N and N′ perpendicular to the pair of sides O and O′, a side P of the piezoelectric element in a lengthwise direction thereof is disposed along the side O, and wherein given that a length of a part of the side P of the piezoelectric element where the first electrode and the second electrode face each other is denoted by PL, a length of one side of the vibration plate in the direction along the side O is denoted by VL, a length of the side O of the optical effective region B is denoted by OL, a region positioned in one end portion of the piezoelectric element in a direction along the side O and spanning along the side P over a length b inwards from a line, which is an extension of the side N or N′ of the optical effective region B and which intersects the piezoelectric element, is denoted by an near-end zone σ of the piezoelectric element, an absolute value of piezoelectric constant of the piezoelectric material in a region, which is positioned between two lines extending from the sides N and N′ of the optical effective region B and which does not include the near-end zone σ, is denoted by d, and an absolute value of the piezoelectric constant in the near-end zone σ is denoted by d0, relations of VL≧PL>OL and d>d0 are satisfied, and the length b satisfies a relation of OL>b>0.