| 摘要 |
PROBLEM TO BE SOLVED: To obtain a flexible board guiding device capable of guiding a flexile board coming out of a shutter block without interfering in a zoom mechanism and without spoiling the strength of parts in a zoom lens barrel having plural lens groups guided to straight advance in an optical axis direction and changing the focal distance of a photographing optical system; the shutter block fixed on any of the plural lens groups; a rotating ring driven to rotate; a cam ring positioned inside the rotating ring, driven and rotated by the rotation of the rotating ring and moving the plural lens groups to straight advance in the optical axis direction; and the flexible board whose one end is fixed on the shutter block. SOLUTION: A flexible drawing-out through-hole is formed in a peripheral direction on the rotating ring, and the flexible board drawn out backward form the shutter block is folded forward at the rear end of the cam ring. Thereafter, a part between the rotating ring and the cam ring is guided forward and guided to the outside of the rotating ring through the flexible drawing-out through-hole of the rotating ring.
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