公开(公告)号：US20140362459A1

公开(公告)日：2014-12-11

申请号：US14374099

申请日：2012-12-26

Applicant: KOWA COMPANY LTD.

Inventor： Tosao Tohjima

IPC: G02B7/04

CPC classification number: G02B7/04 ,  G02B7/08 ,  G02B7/09 ,  G02B7/102 ,  G03B17/12

Abstract: A lens barrel has a telescopic structure in which an inner barrel and an outer barrel move relative to each other. A plurality of ring retainers (201 and 202) are disposed at different positions with respect to the optical axis direction between an inner barrel (11) and an outer barrel (12) to support a number of bearing balls (30) so that the bearing balls (30) roll in contact with the inner barrel (11) and the outer barrel (12). The retainers (201 and 202) are supported floatingly in a direction parallel to the optical axis in accordance with the rolling movement of the bearing balls (30). The inner barrel (11) and the outer barrel (12), which move relative to each other, are supported by the ball bearings.

Abstract translation: 镜筒具有伸缩结构，其中内筒和外筒相对于彼此移动。 多个环形保持器（201和202）设置在内筒（11）和外筒（12）之间相对于光轴方向的不同位置，以支撑多个轴承滚珠（30），使得轴承 滚珠（30）与内筒（11）和外筒（12）接触。 保持器（201和202）根据轴承滚珠（30）的滚动运动沿着平行于光轴的方向被浮动地支撑。 相对于彼此移动的内筒（11）和外筒（12）由球轴承支撑。

公开(公告)号：US09470871B2

公开(公告)日：2016-10-18

申请号：US14374099

申请日：2012-12-26

Applicant: KOWA COMPANY LTD.

Inventor： Tosao Tohjima

IPC: G02B7/02 ,  G02B7/04 ,  G02B7/08 ,  G02B7/09 ,  G03B17/12 ,  G02B7/10

CPC classification number: G02B7/04 ,  G02B7/08 ,  G02B7/09 ,  G02B7/102 ,  G03B17/12

Abstract: A lens barrel has a telescopic structure in which an inner barrel and an outer barrel move relative to each other. A plurality of ring retainers (201 and 202) are disposed at different positions with respect to the optical axis direction between an inner barrel (11) and an outer barrel (12) to support a number of bearing balls (30) so that the bearing balls (30) roll in contact with the inner barrel (11) and the outer barrel (12). The retainers (201 and 202) are supported floatingly in a direction parallel to the optical axis in accordance with the rolling movement of the bearing balls (30). The inner barrel (11) and the outer barrel (12), which move relative to each other, are supported by the ball bearings.

Abstract translation: 镜筒具有伸缩结构，其中内筒和外筒相对于彼此移动。 多个环形保持器（201和202）设置在内筒（11）和外筒（12）之间相对于光轴方向的不同位置，以支撑多个轴承滚珠（30），使得轴承 滚珠（30）与内筒（11）和外筒（12）接触。 保持器（201和202）根据轴承滚珠（30）的滚动运动沿着平行于光轴的方向被浮动地支撑。 相对于彼此移动的内筒（11）和外筒（12）由球轴承支撑。