公开(公告)号：US5940633A

公开(公告)日：1999-08-17

申请号：US988360

申请日：1997-12-10

申请人： Haruhisa Yamamoto ,  Norio Nakai

发明人： Haruhisa Yamamoto ,  Norio Nakai

IPC分类号： G02B7/10 ,  G03B3/10

CPC分类号： G02B7/10

摘要： A lens barrel includes an optical lens having an optical axis, an operation ring substantially cylindrical and operable about the optical axis to move the optical lens along the optical axis thereof, and a slidable contact member slidably in contact with the inner circumferential surface of the operation ring, the slidable contact member providing a specific load against the inner circumferential surface thereof. The operational torque of the operation force is changed when the slidable contact member moves in the optical axis direction by changing its contact area with the inner circumferential surface of the operation ring.

摘要翻译： 透镜镜筒包括具有光轴的光学透镜，操作环基本上为圆柱形并且围绕光轴可操作以沿着其光轴移动光学透镜，以及可滑动地与操作的内周表面接触的可滑动接触构件 所述可滑动接触构件对其内周面提供特定的载荷。 当可滑动接触构件通过改变与操作环的内周表面的接触面积沿光轴方向移动时，操作力的操作扭矩改变。

公开(公告)号：US5696634A

公开(公告)日：1997-12-09

申请号：US580277

申请日：1995-12-27

申请人： Itaru Watanabe ,  Yasunori Imaoka ,  Norio Nakai

发明人： Itaru Watanabe ,  Yasunori Imaoka ,  Norio Nakai

IPC分类号： G03B19/07 ,  H04N5/225 ,  G02B15/14

CPC分类号： G03B19/07 ,  H04N5/2254

摘要： An objective lens for application to an image apparatus of which the size of the image pickup surface is changeable over between a first mode of a first aspect ratio and a second mode of a second aspect ratio has first optical member for extending the focal length of the objective lens, second optical member for shrinking the focal length of the objective lens, an operating member, and a transmitting mechanism for transmitting the operating force of the operating member to the first optical member under the first mode, and transmitting the operating force to the first and second optical member under the second mode, and by the operation of the operating member, under the first mode, the first optical member is removably insertable into the optical path of the objective lens, and under the second mode, the first and second optical member are removably insertable into the optical path of the objective lens.

摘要翻译： 一种用于应用于第一宽高比的第一模式与第二高宽比的第二模式之间的图像拾取表面的尺寸可改变的图像设备的物镜具有用于延伸第一宽高比的第一模式和第二宽高比的第二模式的第二模式的第一光学构件， 物镜，用于收缩物镜的焦距的第二光学构件，操作构件和用于在第一模式下将操作构件的操作力传递到第一光学构件的传送机构，并将操作力传递到 在第二模式下的第一和第二光学构件，并且通过操作构件的操作，在第一模式下，第一光学构件可移除地插入到物镜的光路中，并且在第二模式下，第一和第二光学构件 光学构件可移除地插入到物镜的光路中。