Patent ID: 8033994

Claim:
An endoscopic apparatus comprising: a movable lens that is movably built in an objective optical system arranged at an tip of an insert part of an endoscope; a piezoelectric-element drive mechanism that causes the movable lens to move forward and backward in an optical axis direction due to driving of a piezoelectric element; a control circuit that provides a drive pulse to the piezoelectric element; and a storage section that stores a first drive-pulse count data for moving the movable lens forward by a predetermined amount and a second drive-pulse count data different from the first drive-pulse count data for moving the movable lens backward by an amount equal to the predetermined amount; wherein the control circuit provides the first drive-pulse count data to move the movable lens forward by the predetermined amount, and provides the second drive-pulse count data so as to move the movable lens backward by the amount equal to the predetermined amount.