公开(公告)号：US4281907A

公开(公告)日：1981-08-04

申请号：US064806

申请日：1979-08-08

Applicant: Shigeru Kamata

Inventor： Shigeru Kamata

IPC: G02B7/04 ,  G02B7/10

CPC classification number: G02B7/04 ,  G02B7/10

Abstract: 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.

Abstract translation: 在设置有具有用于控制变焦透镜系统的光学距离的凸轮部分的凸轮构件的镜筒中，以及滑动运动引导构件，用于将凸轮构件可旋转地保持在光轴上的预定位置，并且用于使透镜系统 为了将上述凸轮构件可旋转地保持在可滑动导向构件上的光学预定位置处，为了在凸轮构件和第二凸轮构件之间设置用于调节凸轮构件的轴向运动的区域， 以及用于在进行调整之后抑制凸轮构件相对于可滑动导向构件的轴向移动的禁止装置。 因此，筒的组装和调整操作变得容易。