公开(公告)号：US06786656B2

公开(公告)日：2004-09-07

申请号：US10668223

申请日：2003-09-24

申请人： Mitsuhiko Oka

发明人： Mitsuhiko Oka

IPC分类号： G03B100

CPC分类号： G03B17/245 ,  G03B1/04 ,  G03B17/26 ,  G03B2217/24 ,  G03B2217/261

摘要： A roll film, which is wound up on a feeder spool with emulsion surface facing inward on the roll, is turned inside out and is drawn from the feeder spool to a first guide roller. The photo film is turned inside out again while being fed through a second guide roller and is wound up on a take-up spool with the emulsion surface facing inward on the roll. On an inner wall of a film magazine facing the second guide roller, a press roller presses the photo film to prevent loosening of the photo film in a film feeding path from the periphery of the second guide roller to the take-up spool.

公开(公告)号：US06236519B1

公开(公告)日：2001-05-22

申请号：US09501533

申请日：2000-02-09

申请人： Mitsuhiko Oka

发明人： Mitsuhiko Oka

IPC分类号： G02B1514

CPC分类号： G02B7/102 ,  G02B23/145

摘要： A zoom viewfinder device has a viewfinder body. Two movable lenses are accommodated in the viewfinder body. A lens moving mechanism drives the movable lenses in the viewfinder body. A rectilinear guiding mechanism guides movement of each movable lens in an optical axis direction thereof. In the rectilinear guiding mechanism, a rectilinear guiding groove is formed in the viewfinder body, extended in the optical axis direction. A follower projection is formed with a periphery of the movable lens, for contacting the rectilinear guiding groove to slide along the rectilinear guiding groove. A one-side positioning rod keeps the follower projection pressed on the rectilinear guiding groove by pushing the movable lens in a direction crosswise to the optical axis direction, for absorbing play of the movable lens relative to the optical axis direction.

摘要翻译： 变焦取景器装置具有取景器主体。 两个可移动透镜容纳在取景器主体中。 透镜移动机构驱动取景器主体中的可移动透镜。 直线引导机构引导每个可移动透镜在其光轴方向上的移动。 在直线引导机构中，在取景器主体中形成沿光轴方向延伸的直线引导槽。 随动突起形成有可移动透镜的周边，用于接触直线引导槽沿着直线引导槽滑动。 单侧定位杆通过沿与光轴方向交叉的方向推动可动透镜来保持随动突起被压在直线引导槽上，用于吸收可移动透镜相对于光轴方向的播放。

公开(公告)号：US06477333B1

公开(公告)日：2002-11-05

申请号：US09672975

申请日：2000-09-29

申请人： Mitsuo Manabe ,  Mitsuhiko Oka

发明人： Mitsuo Manabe ,  Mitsuhiko Oka

IPC分类号： G03B1310

CPC分类号： G03B13/12 ,  G03B1/50

摘要： A view frame changing apparatus of the present invention is constructed in which cam grooves formed at view frame pieces are arched by the predetermined curvature; thus the cam pins can smoothly slide over the entire area of the sliding area of the cam grooves without being caught in the cam grooves. Moreover, the cam grooves are formed in areas of acute angles in between the two diagonal lines of the image frame; therefore, the frame changing apparatus can be compact in size.

摘要翻译： 本发明的视角变更装置的特征在于，在观察框架上形成的凸轮槽以规定的曲率被弯曲; 因此凸轮销可以在凸轮槽的滑动区域的整个区域上平滑地滑动，而不会卡在凸轮槽中。 此外，凸轮槽形成在图像框架的两条对角线之间的锐角区域中; 因此，帧改变装置的尺寸可以是紧凑的。