Patent ID: 8888301
Filing Date: 2014-11-18
Classification: B08B,G02B,H01L,H04N

Abstract:
1. A foreign substance removal unit comprising: a rectangular optical member disposed on an optical path, in which is set an optically effective region through which a light flux passes; a piezoelectric device applied to a side of the optical member on the outer side of the optically effective region; a vibration suppression member applied to a side of the optical member where the piezoelectric device is not applied; and a retaining member arranged to retain the optical member, wherein the vibration suppression member is applied to the optical member such that an edge face of the side of the vibration suppression member protrudes outwardly from the edge face of the optical member, and wherein the retaining member retains the optical member such that the retaining member does not contact the edge face of the vibration suppression member that is protruding outwardly from the edge face of the optical member.