| 摘要 |
In a lens barrel provided with a cam member having a cam portion for controlling the optical distance of a zoom lens system, and a sliding movement guide member for rotatably holding the cam member at a predetermined position on the optical axis and for causing the lens system to move straight in an opitical axis direction, in order to rotatably hold the above-described cam member at the optical predetermined position on the slidable guide member, there are provided a region for adjusting axial movement of the cam member between the cam member and the slidable guide member, and an inhibiting device for inhibiting axial movement of the cam member relative to the slidable guide member after the adjustment has been effected. Accordingly, the assembly and adjusting operations of the barrel are facilitated.
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