Fuji Photo Optical Co., Ltd.

Motoyoshi Furusawa

Motohiko Horio

Akio Ohmiya

Shigemitsu Mori

Shyuichi Togashi

In a lens barrel for a photographic camera or the like employing operating rings made of synthetic resin, the operating rings are provided with slots on the periphery thereof. The slots are preferably provided to extend in the direction perpendicular to the optical axis of the lens system of the lens barrel.

Lens barrel

In a film wind-up mechanism of a photographic camera, a wind-up shaft to which a wind-up lever is fixed is divided into an upper portion and a lower portion. The wind-up lever is fixed to the upper portion, and the lower portion is fixed to a spool gear for driving a film take-up spool. A friction means is provided between the spool gear and the take-up spool.

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Shobumachi, undefined

Motoyoshi Furusawa