Patent ID: 6307678
Filing Date: 2001-10-23
Classification: G02B,G03B

Abstract:
An image shake correction device of an optical apparatus comprising:an optical element in an optical path of a principal optical system, including a pair of flat plates being made of transparent material corresponding to an incident surface and an outgoing surface and a transparent fluid filler filled between said pair of flat plates and a sealer to seal said filler between said pair of flat plates;a driving mechanism having at least one actuator which utilizes a shape memory alloy member to change an angle of at least one of said pair of flat plates with respect to an optical axis of the principal optical system of the optical apparatus and supporting said optical element, andsaid actuator maintaining a shape of said shape memory alloy member in a standby state to allow deformation both to a direction to restore the memorized original shape and to a counter direction to deform by an applied force when in a condition where the image shake is not corrected, and a temperature of said shape memory alloy member being controlled to a calculated temperature based on a detected shake magnitude of the optical apparatus for changing the shape to the memorized shape corresponding to the controlled temperature from said shape of said standby state.