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公开(公告)号：US5285322A
公开(公告)日：1994-02-08
申请号：US941821
申请日：1992-09-08
CPC分类号： G02B7/10
摘要： A zoom lens includes a lens group mounted in a cam barrel mechanism which includes a fixed barrel with a cam barrel rotationally mounted thereon. The lens group has a pin which projects through an axially extending clearance slot in the fixed barrel and a compliant feature on the pin removes the clearance between the pin and the slanted cam slot in the cam barrel so that as the cam barrel is rotated the lens group translates axially within the fixed barrel. The fixed barrel has an endcap with array of centering orifices mounted thereon and a beveled surface which is engaged by an outboard edge of the cam barrel. The cam barrel is urged against the endcap by a wave washer disposed between the cam barrel and a base. Radially disposed with respect to the cam barrel are a pair of spaced lugs and a bowed sheet spring which engages the cam barrel to urge the cam barrel against the lugs. The wave washer and bowed sheet spring positively locate the cam barrel with zero clearance. As long as the spring forces of the wave washer and bowed sheet spring are not exceeded, the cam barrel is limited only to rotational motion with respect to the fixed barrel.
摘要翻译： 变焦透镜包括安装在凸轮筒机构中的透镜组，其包括具有旋转地安装在其上的凸轮筒的固定筒。 透镜组具有突出通过固定筒中的轴向延伸的间隙的销，并且销上的柔顺特征消除了销和凸轮筒中的倾斜凸轮槽之间的间隙，使得当凸轮筒旋转时，透镜 组在固定筒内轴向平移。 固定筒具有安装在其上的定心孔阵列的端盖和与凸轮筒的外侧边缘接合的斜面。 凸轮筒通过布置在凸轮筒和基座之间的波形垫圈推靠在端盖上。 相对于凸轮筒径向设置的是一对间隔开的凸耳和弓形弹簧，该弓形弹簧接合凸轮筒，以将凸轮筒推压到凸耳上。 波形垫圈和弓形弹簧将零间隙正确地定位在凸轮筒上。 只要不超过波形垫圈和弓形弹簧的弹簧力，则凸轮筒仅限于相对于固定筒的旋转运动。
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公开(公告)号：US5162948A
公开(公告)日：1992-11-10
申请号：US806057
申请日：1991-12-11
申请人： Randy E. Horning , James C. Crosley
发明人： Randy E. Horning , James C. Crosley
CPC分类号： G02B7/10
摘要： A rolling ball element mount and barrel interface comprises a barrel and an element mount sharing a common lateral (X, Y, Z) and angular (.THETA..sub.X, .THETA..sub.Y, .THETA..sub.Z) frame of reference located at a center of said barrel, the element mount adapted to fit inside the barrel axially along Z. A first component, including at least two rolling balls, is disposed between and adapted for contact with the element mount and the barrel for (i) constraining the element mount in lateral positions X and Y and angular positions .THETA..sub.X and .THETA..sub.Y and (ii) moveably coupling the element mount and the barrel in the axial direction. A second component, including at least one rolling ball, is disposed between and adapted for contact with the element mount and the barrel for (iii) constraining the element mount in angular position .THETA..sub.Z in cooperation with the first component and (iv) moveably coupling the element mount and the barrel in the axial direction. Lastly, a third component is selectively positioned between the element mount and barrel with respect to the first and second components for loading the element mount against the barrel to maintain the first and second components in contact with the element mount and the barrel, respectively, and for moveably coupling the element mount and the barrel in the axial direction.
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