Patent ID: 6956705

Claim:
A lens barrel structure, comprising: a first lens frame including an outer ring portion, an inner ring portion, and a flange wall by which a front end of said outer ring portion and a front end of said inner ring portion are connected, said first lens frame being provided with a first cam follower on an inner peripheral surface of said outer ring portion; a cam ring which is driven to rotate and positioned between said outer ring portion and said inner ring portion; a second lens frame which includes a second cam follower, and is positioned inside said inner ring portion; a first cam groove formed on an outer peripheral surface of said cam ring so that said first cam follower is engaged with said first cam groove; a second cam groove formed on an inner peripheral surface of said cam ring so that said second cam follower is engaged with said second cam groove; a linear guide ring, positioned around said first lens frame, for guiding said first lens frame linearly along an optical axis; and a linear guide mechanism, provided between said inner ring portion of said first lens frame and said second lens frame, for guiding said second lens frame linearly along said optical axis.