| 摘要 |
A lens barrel having an eccentricity adjusting mechanism, the lens barrel includes a first lens frame, a second lens frame, an engaging part, a plate spring, a circumferential direction groove, a guiding groove, a screw hole, a set screw, a tool insertion hole. The first lens frame is disposed in an fixed barrel of the lens barrel, integrally holds a plurality of lenses, and has openings on front and rear end of the first lens frame in an optical axis direction. The second lens frame that holds a part of the plurality of lenses to be subjected to eccentricity adjustment and is inserted from one of the openings to be disposed and held in the first lens frame.
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