公开(公告)号：US5461444A

公开(公告)日：1995-10-24

申请号：US230516

申请日：1994-04-20

申请人： Zenichi Okura ,  Shinsuke Kohmoto

发明人： Zenichi Okura ,  Shinsuke Kohmoto

IPC分类号： G02B7/02 ,  G03B17/00

CPC分类号： G02B7/026

摘要： A lens holding structure used in a camera is provided having a rectangular photographing aperture. The lens holding structure includes a lens and a lens holding member for holding a lens. The lens is formed having a pair of flat surfaces, parallel to each other, and parallel to a longitudinal boundary of the photographing aperture. The lens holding member has a lens holding sleeve and a pair of lens engaging arms. When the lens is fitted into the lens holding sleeve, the lens engaging arms contact the pair of flat surfaces of the lens.

摘要翻译： 提供了一种在相机中使用的镜头保持结构，其具有矩形拍摄孔径。 透镜保持结构包括透镜和用于保持透镜的透镜保持构件。 透镜形成为具有彼此平行并平行于拍摄孔的纵向边界的一对平坦表面。 透镜保持构件具有透镜保持套筒和一对透镜接合臂。 当透镜装配到透镜保持套筒中时，透镜接合臂接触透镜的一对平坦表面。

公开(公告)号：US5446593A

公开(公告)日：1995-08-29

申请号：US145171

申请日：1993-11-03

申请人： Takuji Hamasaki ,  Zenichi Okura

发明人： Takuji Hamasaki ,  Zenichi Okura

IPC分类号： G02B7/10 ,  G02B7/02

CPC分类号： G02B7/10

摘要： A lens advancing mechanism which includes a stationary barrel having a linear guide groove arranged parallel to an optical axis, a ring rotatably coupled on the outer circumferential surface of the fixed barrel and a lens supporting member having a guide portion which is received in the linear guide groove. The ring has at least one lead groove formed on its inner surface and the guide portion has at least one protrusion which is received in the lead groove of the ring. When the ring is rotated, the lens supporting member is moved along the linear guide groove.

摘要翻译： 一种透镜行进机构，其包括具有平行于光轴布置的直线导向槽的固定筒，可旋转地联接在固定筒的外周表面上的环和具有引导部的透镜支撑构件，该引导部被容纳在直线导轨 槽。 环具有形成在其内表面上的至少一个引导槽，并且引导部分具有容纳在环的引导槽中的至少一个突起。 当环旋转时，透镜支撑构件沿直线引导槽移动。

公开(公告)号：US4668047A

公开(公告)日：1987-05-26

申请号：US739674

申请日：1985-05-31

申请人： Zenichi Okura

发明人： Zenichi Okura

IPC分类号： G02B7/02 ,  B02B7/02 ,  F16L23/02

CPC分类号： G02B7/026 ,  Y10T403/64

摘要： A lens holding system is provided for the rear lens system of a camera lens arrangement having front and rear lens systems divided by a shutter housing. The lends holding system includes a first lens holder for biasing the rear lens system in a first axial direction, a second lens holder for biasing the rear lens system in a direction opposite the first axial direction, the first and second lens holder including respective first and second coupling parts extending from peripheral portions of the respective lens holders for interengagement and for supplying the biasing through elastic deformation of at least one of the first and second coupling parts.

摘要翻译： 为具有由快门外壳分隔开的前后透镜系统的相机透镜装置的后透镜系统提供透镜保持系统。 借助保持系统包括：用于沿第一轴向偏置后透镜系统的第一透镜保持器，用于沿与第一轴向方向相反的方向偏压后透镜系统的第二透镜保持器，第一和第二透镜保持器包括各自的第一和 第二联接部件，其从相应的透镜保持器的周边部分延伸，用于相互接合，并且用于通过第一和第二联接部件中的至少一个的弹性变形来提供偏压。

公开(公告)号：US4621918A

公开(公告)日：1986-11-11

申请号：US235839

申请日：1981-02-19

申请人： Masahiro Kawasaki ,  Zenichi Okura ,  Fumio Urano

发明人： Masahiro Kawasaki ,  Zenichi Okura ,  Fumio Urano

IPC分类号： G03B7/085 ,  G03B7/20 ,  G03B9/07 ,  G03B17/14 ,  G03B19/12

CPC分类号： G03B7/085 ,  G03B17/14 ,  G03B19/12 ,  G03B7/20

摘要： A camera comprises a camera body and first and second lens assemblies interchangeably insertable into the camera body. Each lens assembly has a displaceable actuator, a diaphragm adjustable between a maximum aperture and a minimum aperture value responsive to displacement of the actuator and a transducer for generating a first signal representative of the displacement of the actuator. In the camera body, there is generated a second signal representative of the desired aperture value of the diaphragm for correct exposure. The first and second signals are compared and the actuator of the lens assembly inserted in the camera body is displaced responsive to the comparison to stop down the diaphragm from the maximum aperture value toward the minimum aperture value until the first and second signals assume a predetermined relationship. The diaphragm of the second lens assembly is maintained at the maximum aperture value during an initial portion of the displacement of the actuator. Preferably, the initial portion of the actuator displacement is sufficient to compensate for the deviation in aperture value, maximum aperture value, and minimum aperture between the first and second lens assemblies.

摘要翻译： 相机包括照相机主体和可互换地插入照相机主体中的第一和第二透镜组件。 每个透镜组件具有位移致动器，可响应于致动器的位移的最大孔径和最小孔径值之间调节的隔膜以及用于产生表示致动器的位移的第一信号的换能器。 在相机机身中，产生表示用于正确曝光的光圈的期望光圈值的第二信号。 第一和第二信号被比较，并且插入照相机主体中的透镜组件的致动器响应于比较而移动，以将光阑从最大孔径值朝向最小孔径值停止，直到第一和第二信号呈现预定关系 。 在致动器的位移的初始部分期间，第二透镜组件的膜片保持在最大光圈值。 优选地，致动器位移的初始部分足以补偿第一和第二透镜组件之间的孔径值，最大孔径值和最小孔径的偏差。

公开(公告)号：US4577952A

公开(公告)日：1986-03-25

申请号：US584521

申请日：1984-02-28

申请人： Fumio Urano ,  Zenichi Okura ,  Masahiro Kawasaki

发明人： Fumio Urano ,  Zenichi Okura ,  Masahiro Kawasaki

IPC分类号： G03B7/20 ,  G03B17/18

CPC分类号： G03B17/18 ,  G03B7/20

摘要： A camera has a displaceable actuator in a diaphragm adjustable between a maximum aperture value and a minimum aperture value responsive to displacement of the actuator. A first signal representative of the displacement of the actuator is generated. A second signal representative of a fraction of an exposure quantity dependant on film sensitivity and subject light is generated. Responsive to the second signal, the exposure time of the camera is set. At least partially responsive to the second signal, a third signal representative of the desired aperture value of the diaphragm for correct exposure is generated. The first and third signals are compared. Upon shutter release, the actuator is displaced and the diaphragm is maintained at the maximum aperture value during an initial portion of the displacement of the actuator to compensate for the characteristics of the particular interchangeable lens connected to the camera body. Responsive to the comparison, displacement of the actuator is arrested when the first and second signals assume a predetermined relationship, which establishes the desired diaphragm aperture value for correct exposure. The desired diaphragm value and shutter speed are also displayed.

摘要翻译： 相机具有可移动的致动器，该隔膜在响应于致动器的位移的最大孔径值和最小孔径值之间可调节。 产生表示致动器的位移的第一信号。 产生代表取决于胶片感光度和被摄体光的曝光量的一部分的第二信号。 响应于第二信号，设置相机的曝光时间。 至少部分地响应于第二信号，产生表示用于正确曝光的光阑的期望光圈值的第三信号。 比较第一和第三信号。 在快门释放时，致动器移位，并且在致动器的位移的初始部分期间，膜片保持在最大光圈值，以补偿连接到照相机主体的特定可互换镜头的特性。 响应于比较，当第一和第二信号呈现预定的关系时致动器的位移被阻止，这确定了用于正确曝光的期望的光阑孔径值。 还显示所需的光圈值和快门速度。

公开(公告)号：US4477161A

公开(公告)日：1984-10-16

申请号：US229879

申请日：1981-01-30

申请人： Masahiro Kawasaki ,  Zenichi Okura ,  Fumio Urano

发明人： Masahiro Kawasaki ,  Zenichi Okura ,  Fumio Urano

IPC分类号： G03B7/085 ,  G03B7/20 ,  G03B9/07

CPC分类号： G03B7/20 ,  G03B7/085

摘要： A compensator system for diaphragm control in a single-lens reflex camera of interchangeable type having an exposure control circuit responsive to the position of a lever that is operatively coupled to the diaphragm according to a preset position of a diaphragm preset ring. The exposure control circuit is regulated for compensating any errors in illumination intensity in a film plane provided by individual interchangeable lenses and errors in illumination intensity provided by photometric operation through respective lenses mounted on a camera in relation with a specific position of a light receiving element contained in a photometric circuit. A diaphragm preset ring has on the periphery thereof an indication for the automatic diaphragm control at a predetermined angular distance from an indication for the fully closed diaphragm value of an associated lens. An arithmetic factor is provided for exposure control comprising an electric adjustment factor such as a resistance value or binary signal that is selected by the lever when the diaphragm preset ring has been rotated to the automatic diaphragm control position. A signal is provided for detecting a fully closed diaphragm and a fully opened diaphragm. Compensation is provided for a deviation from the signal representing the fully opened diaphragm value not represented by any of the specific series of a multiple of a first displacement provided by a diaphragm blade actuator system.

摘要翻译： 一种用于可互换类型的单镜头反光照相机中的光圈控制的补偿器系统，其具有响应于根据隔膜预设环的预设位置可操作地耦合到隔膜的杆的位置的曝​​光控制电路。 调节曝光控制电路，以补偿由各个可互换镜头提供的胶片平面中的照明强度的任何误差以及通过安装在相机上的相应透镜相对于包含的光接收元件的特定位置的光度测量操作提供的照明强度的误差 在测光电路中。 隔膜预设环在其周边上具有自动光圈控制的指示，该指示与相关联的透镜的完全关闭的光阑值的指示在预定的角距离处。 提供了一种用于曝光控制的算术因子，其包括当光阑预设环已经旋转到自动光阑控制位置时由杠杆选择的诸如电阻值或二进制信号的电调节因子。 提供用于检测完全闭合的隔膜和完全打开的隔膜的信号。 提供了与表示由光阑叶片致动器系统提供的第一位移的倍数的特定系列中没有表示的完全打开的膜片值的信号的偏差。

公开(公告)号：US4395106A

公开(公告)日：1983-07-26

申请号：US300683

申请日：1981-09-09

申请人： Masahiro Kawasaki ,  Zenichi Okura ,  Fumio Urano

发明人： Masahiro Kawasaki ,  Zenichi Okura ,  Fumio Urano

IPC分类号： G03B7/085 ,  G03B7/20 ,  G03B9/07

CPC分类号： G03B7/085 ,  G03B7/20

摘要： A camera has first and second displaceable actuators and a diaphragm adjustable between a maximum aperture value and a minimum aperture value responsive to displacement of the second actuator. A first signal is generated that is representative of the displacement of the first actuator. A second signal is generated that is representative of a desired aperture value of the diaphragm for correct exposure. A first and second signal are compared. The first actuator is displaced upon shutter release, but the second actuator remains stationary during an initial portion of the displacement of the first actuator and is displaced as a unit with the first actuator during the remainder of the displacement of the first actuator. When the first and second signals assume a predetermined relationship as indicated by the comparison, displacement of the actuators is arrested and the proper aperture value is provided. In a camera having interchangeable lenses, the first actuator is disposed in the camera body so that none of the parts of the first signal generator need to be placed in the lens.

摘要翻译： 相机具有第一和第二可移位致动器，并且响应于第二致动器的位移，可在最大光圈值和最小光圈值之间调节光阑。 产生代表第一致动器的位移的第一信号。 产生表示用于正确曝光的隔膜的期望光圈值的第二信号。 比较第一和第二信号。 第一致动器在快门释放时移位，但是在第一致动器的位移的初始部分期间第二致动器保持静止，并且在第一致动器的剩余位移期间与第一致动器一起移位。 当第一和第二信号呈现如比较所示的预定关系时，致动器的位移被阻止并提供适当的孔径值。 在具有可互换镜头的相机中，第一致动器设置在照相机主体中，使得第一信号发生器的任何部分都不需要放置在透镜中。