Endoscopic apparatus

Details Endoscopic apparatus Endoscopic apparatus

2007-03-09

2011-10-11

Smith, Philip (Department: 3779)

Surgery

Endoscope

Having imaging and illumination means

Reexamination Certificate

active

08033994

ABSTRACT:
An endoscopic apparatus comprises: 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 respective ones of drive-pulse count data for moving the movable lens forward and backward equally in amount, wherein the control circuit performs control of providing a drive-pulse count, different in between forward and backward movement, to the piezoelectric element of the piezoelectric-element drive mechanism so as to move the movable lens forward and backward equally in amount depending upon drive-pulse count data read out of the storage section.

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JP Office Action issued on Mar. 8, 2011 in JP application No. 2006-066629.

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