Patent ID: 6595916
Filing Date: 2003-07-22
Classification: A61B,G02B,H04N

Abstract:
An endoscope apparatus, comprising:an objective lens group disposed at a tip end portion of an endoscope, capable of changing field curvature characteristics by moving a movable lens; an imaging device for picking up an observation object through said objective lens group; image surface curving means for operating so as to change the field curvature characteristics of said objective lens group; driving means for driving said movable lens on the basis of an operation of said image surface curving means; judging means for dividing an imaging area of said imaging device into a plurality of areas and judging whether or not a central part and a peripheral part are in focus within a predetermined range by comparing video signal information of divided imaging areas; and a control circuit for executing various control on the basis of output from said judging means.