公开(公告)号：US5886836A

公开(公告)日：1999-03-23

申请号：US955155

申请日：1997-10-21

申请人： Takamitsu Sasaki ,  Zenichi Okura

发明人： Takamitsu Sasaki ,  Zenichi Okura

IPC分类号： G02B7/04 ,  G02B7/10 ,  G02B7/02 ,  G02B15/14

CPC分类号： G02B7/10

摘要： A lens barrel which includes: a cam ring having a plurality of cam slots; a follower barrel on which the cam ring is slidably fitted; a plurality of follower projections formed on the follower barrel to be respectively fitted in the plurality of cam slots; a plurality of ring members respectively fixed to the plurality of follower projections to each project outwardly from an outer periphery of the cam ring in a radial direction; a plurality of washers respectively held between the plurality of follower projections and the plurality of ring members, each of the plurality of washers being formed to have a diameter larger than a width of a corresponding one of the plurality of cam slots so that at least a rim of the each of the plurality of washers contacts the outer periphery of the cam ring.

摘要翻译： 一种镜筒，包括：具有多个凸轮槽的凸轮环; 一个从动筒，凸轮环可滑动地装配在其上; 多个随动突起，形成在所述从动筒上，以分别装配在所述多个凸轮槽中; 分别固定在所述多个从动突起上的多个环状构件，其各自从所述凸轮环的外周向径向突出; 分别保持在所述多个从动突起与所述多个环构件之间的多个垫圈，所述多个垫圈中的每一个形成为具有大于所述多个凸轮槽中的相应一个的宽度的直径，使得至少一个 多个垫圈中的每一个的边缘与凸轮环的外周接触。

公开(公告)号：US4720167A

公开(公告)日：1988-01-19

申请号：US801993

申请日：1985-11-25

申请人： Zenichi Okura

发明人： Zenichi Okura

IPC分类号： G03B9/10 ,  G02B7/04 ,  G02B15/14 ,  G02B7/02

CPC分类号： G02B15/14 ,  G02B7/04

摘要： A lens barrel having a front lens group frame axially movable along its optical axis is stabilized by means of spring elements which urge the frame in a radial direction to a stable position. A rear lens group frame is subsequently radially adjusted so that the optical axis of the rear lens group is in alignment with that of the first lens group.

摘要翻译： 具有沿着其光轴可轴向移动的前透镜组框架的透镜筒通过弹簧元件来稳定，所述弹簧元件将框架沿径向推动到稳定位置。 后透镜组框架随后被径向调整，使得后透镜组的光轴与第一透镜组的光轴对准。

公开(公告)号：US4367939A

公开(公告)日：1983-01-11

申请号：US276743

申请日：1981-06-24

申请人： Zenichi Okura

发明人： Zenichi Okura

IPC分类号： G03B9/07

CPC分类号： G03B9/07

摘要： An automatic aperture presetting device for a camera lens having a crank lever pivotally mounted on a preset ring which is rotatable around the optical axis of the lens. The end of one arm of the lever is in abutment against the edge of a cam which is mounted on a stationary lens barrel while the end of the other arm of the lever is operatively coupled to a stop member of an aperture operation ring which is driven from a corresponding member on the camera body side to thereby obtain an automatic aperture value corresponding to a set position of the preset ring.

摘要翻译： 一种用于相机镜头的自动孔径预设装置，具有可枢转地安装在围绕透镜的光轴旋转的预设环上的曲柄杆。 杆的一个臂的端部与安装在固定镜筒上的凸轮的边缘抵接，而杆的另一个臂的端部可操作地联接到被驱动的孔操作环的止动构件 从相机机体侧的相应部件上获得与预设环的设定位置对应的自动光圈值。

公开(公告)号：US4951083A

公开(公告)日：1990-08-21

申请号：US320625

申请日：1989-03-08

申请人： Zenichi Okura ,  Shinsuke Kohmoto

发明人： Zenichi Okura ,  Shinsuke Kohmoto

IPC分类号： H05K1/02 ,  G03B17/02 ,  G03B17/04 ,  G03B17/12

CPC分类号： G03B17/02 ,  G03B17/04 ,  G03B2217/002

摘要： In a camera, a shutter unit is mounted to a movable lens system for movement therewith along an optical axis. An annular member is arranged between the shutter unit and a camera body, for moving the shutter unit. A control signal from a control unit within the camera body is supplied to the shutter unit through a flexible element. The flexible element is turned back plurality of times within a space defined by the annular member so as to have at least two first and second turned-back portions spaced away from each other along the optical axis, whereby the flexible element has at least three sections including a first section extending between the shutter unit and the first turned-back portion, a second section extending between the first and second turned-back portions, and a third section extending between the second turned-back portion and the control unit. These sections overlap with each other in a direction normal to the optical axis.

摘要翻译： 在相机中，快门单元安装到可移动透镜系统，以便沿着光轴移动。 在快门单元和照相机主体之间布置环形构件，用于移动快门单元。 来自照相机主体内的控制单元的控制信号通过柔性元件提供给快门单元。 柔性元件在由环形构件限定的空间内被多次翻转，以具有沿着光轴彼此间隔开的至少两个第一和第二折返部分，由此柔性元件具有至少三个部分 包括在所述快门单元和所述第一折回部分之间延伸的第一部分，在所述第一和第二折返部分之间延伸的第二部分，以及在所述第二折返部分和所述控制单元之间延伸的第三部分。 这些部分在垂直于光轴的方向上彼此重叠。

公开(公告)号：US4505564A

公开(公告)日：1985-03-19

申请号：US520724

申请日：1983-08-05

申请人： Etsuro Nishio ,  Zenichi Okura

发明人： Etsuro Nishio ,  Zenichi Okura

IPC分类号： G03B7/01 ,  G03B9/02 ,  G03B9/07 ,  G03B17/14

CPC分类号： G03B9/07 ,  G03B17/14

摘要： An interchangeable objective with a variable lens aperture for a photographic camera has a stationary support member and a diaphragm-operating member that is rotatable about an axis between first and second angular positions relative to the stationary support member. A first spring-loaded locking pin is located in the stationary member in a first plane perpendicular to the axis. A second spring-loaded locking pin is located in the stationary member circumferentially spaced at an angle to the first pin about the axis and in a second plane perpendicular to the axis. The second plane is spaced from the first plane in the direction of the axis. As a result, the distance between locking pins is greater than the angular distance of rotation of the diaphragm-operating member between the end of the M-range and the A-position. A locking groove is formed in the diaphragm-operating member so as alternatively to receive the first and second spring-loaded pins in locking engagement when the diaphragm-operating member is positioned at the first and second angular positions, respectively. An unlocking button is mounted in the diaphragm-operating member over the locking groove to push the respective first and second pins out of engagement with the locking groove upon depression of the unlocking button.

摘要翻译： 具有用于照相机的可变透镜孔的可互换物镜具有固定支撑构件和隔膜操作构件，其可相对于固定支撑构件在第一和第二角位置之间绕轴线旋转。 第一弹簧加载的锁定销位于垂直于轴线的第一平面中的固定构件中。 第二弹簧加载的锁定销位于固定构件中，该固定构件围绕轴线以与第一销成一角度的方式与垂直于该轴线的第二平面间隔开。 第二平面在轴线方向上与第一平面间隔开。 结果，锁定销之间的距离大于在M档的端部与A位置之间的隔膜操作构件的旋转的角度距离。 在隔膜操作构件中形成锁定槽，以便当隔膜操作构件分别位于第一和第二角度位置时，可替换地接收第一和第二弹簧加载销的锁定接合。 解锁按钮安装在隔膜操作构件上方的锁定槽上，以在按下解锁按钮时推动相应的第一和第二销脱离与锁定槽的接合。

公开(公告)号：US4357089A

公开(公告)日：1982-11-02

申请号：US237987

申请日：1981-02-25

申请人： Zenichi Okura ,  Yasuyuki Haneishi ,  Shinsuke Kohmoto

发明人： Zenichi Okura ,  Yasuyuki Haneishi ,  Shinsuke Kohmoto

IPC分类号： G03B7/20 ,  G03B9/07 ,  G03B17/14 ,  G03B17/00

CPC分类号： G03B7/20 ,  G03B17/14

摘要： A camera body having a camera body and an interchangeable lens engageable with the camera body has an improved contact arrangement between camera body and lens. A lens mount has a first flat surface, a camera mount engages a lens mount to join the lens to the camera body, and the camera mount has a second flat surface abutting the first flat surface when the lens mount engages the camera mount. One or more first electrical contacts in the lens mount are movable normal to the first surface between a retracted position approximately flush with the first surface and an extended position projecting from the first surface. A spring urges the one or more first contacts toward the extended position. One or more stationary second electrical contacts in the camera mount open toward the second surface without protruding therefrom in alignment with the respective one or more first contacts when the lens mount engages the camera mount so the one or more first contacts normally bear against the respective one or more second contacts. A manually actuated device retracts the one or more first contacts into a position spaced from the respective one or more second contacts. The lens mount and the camera mount are electrically conductive so the manually actuated device connects and disconnects the one or more first contacts electrically to and from the lens mount to make and break electrical contact between the one or more second contacts and the mounts.

摘要翻译： 具有照相机主体和可与相机主体接合的可互换镜头的相机主体具有改善的相机机身和镜头之间的接触布置。 透镜座具有第一平坦表面，相机安装座接合透镜座，以将透镜连接到照相机主体，并且当镜头安装座与相机安装座接合时，相机安装座具有邻接第一平坦表面的第二平坦表面。 透镜安装座中的一个或多个第一电接触件能够在与第一表面大致齐平的缩回位置和从第一表面伸出的延伸位置之间垂直于第一表面移动。 弹簧将一个或多个第一触头推向伸出位置。 相机安装件中的一个或多个固定的第二电触头朝向第二表面开放，而当透镜安装座与摄像机安装座接合时，其不会与相应的一个或多个第一接触件对准，从而一个或多个第一接触件通常抵靠在相应的一个 或更多的第二接触。 手动致动装置将一个或多个第一触头缩回到与相应的一个或多个第二触点间隔开的位置。 透镜支架和摄像机支架是导电的，因此手动致动装置将一个或多个第一触头电连接到透镜支架上并从透镜支架断开，以使得和断开一个或多个第二触点和支架之间的电接触。

公开(公告)号：US4187020A

公开(公告)日：1980-02-05

申请号：US951206

申请日：1978-10-13

申请人： Tadayoshi Ishii ,  Zenichi Okura ,  Takeshi Machida

发明人： Tadayoshi Ishii ,  Zenichi Okura ,  Takeshi Machida

IPC分类号： G02B7/02 ,  G02B7/04 ,  G02B7/28 ,  G03B3/02 ,  G03B13/32 ,  G03B3/00 ,  G03B17/00

CPC分类号： G03B3/02 ,  G02B7/04

摘要： A photographic lens mount has a tripod portion that is rotatable about the optical axis of the lens. A rack and pinion type of focussing mechanism is used and the pinion is fixed with respect to the tripod mounting seat irrespective of the rotational position of the lens support and the camera body. The ring portion of the gear mechanism is formed on a ring that is rotatable with respect to the camera support around the optical axis.

摘要翻译： 照相镜头支架具有可围绕透镜的光轴旋转的三脚架部分。 使用齿条和小齿轮类型的聚焦机构，并且小齿轮相对于三脚架安装座固定，而与透镜支架和照相机主体的旋转位置无关。 齿轮机构的环形部分形成在相对于照相机支撑件围绕光轴可旋转的环上。

公开(公告)号：US5537262A

公开(公告)日：1996-07-16

申请号：US325123

申请日：1994-10-18

申请人： Nobuaki Aoki ,  Zenichi Okura ,  Shinsuke Kohmoto ,  Hitoshi Tanaka ,  Kazuyoshi Azegami

发明人： Nobuaki Aoki ,  Zenichi Okura ,  Shinsuke Kohmoto ,  Hitoshi Tanaka ,  Kazuyoshi Azegami

IPC分类号： G02B7/02

CPC分类号： G02B7/023

摘要： An apparatus for setting the rotational torque of a screw mechanism including a frictional member which is positioned between a lens frame and a lens frame holder. The frictional member can be made of natural fiber, sponge, rubber, or styrene foam.

摘要翻译： 一种用于设置螺旋机构的旋转扭矩的装置，其包括位于透镜框架和透镜框架保持器之间的摩擦构件。 摩擦构件可以由天然纤维，海绵，橡胶或苯乙烯泡沫制成。

公开(公告)号：US5270759A

公开(公告)日：1993-12-14

申请号：US374

申请日：1993-01-04

申请人： Zenichi Okura

发明人： Zenichi Okura

IPC分类号： G03B9/06 ,  G03B9/07

CPC分类号： G03B9/06

摘要： A diaphragm apparatus of a lens includes a diaphragm opening and closing ring and a diaphragm supporting ring for supporting a plurality of diaphragm blades and for opening and closing a diaphragm aperture in accordance with the relative rotation of the diaphragm blades. A diaphragm value setting ring sets a diaphragm value. A releasing member is actuated upon a release of a shutter to rotate the diaphragm opening and closing ring to thereby stop-down the latter. A cam mechanism operates in associated with the rotation of the diaphragm value setting ring to restrict the angular displacement of the diaphragm opening and closing ring into the stopping-down direction, and a stopping-down mechanism rotates the diaphragm supporting ring into the stopping-down direction in association with the rotation of the diaphragm value setting ring in a first angular range from a full open position of the diaphragm value setting ring to a predetermined intermediate diaphragm value thereof. A diaphragm data transmitting member, that is separate from the diaphragm value setting ring, transmits diaphragm value data to a camera body side. An associated mechanism that is provided between the diaphragm value setting ring and the diaphragm data transmitting member maintains the diaphragm data transmitting member to a predetermined position in the diaphragm range in which the diaphragm aperture changes, regardless of an angular position of the diaphragm value setting ring.

摘要翻译： 透镜的隔膜装置包括隔膜开闭环和用于支撑多个光阑叶片的隔膜支撑环，并且用于根据光阑叶片的相对旋转来打开和关闭光阑孔。 光圈值设置环设置光阑值。 释放构件在释放闸门时被致动，以旋转隔膜开闭环，从而阻止隔膜开闭环。 凸轮机构与隔膜值设定环的旋转相关联地操作，以将隔膜开闭环的角位移限制到停止方向，并且停止机构将隔膜支撑环旋转到停止 与隔膜值设定环的旋转相关联的方向与从隔膜值设定环的全开位置到其规定的中间隔膜值的第一角度范围相关联。 与光圈值设定环分离的光圈数据传送部件将光圈值数据传送到照相机机身侧。 设置在膜片数值设定环和隔膜数据传送部件之间的相关机构将膜片数据传递部件保持在膜片孔径变化的膜片范围内的规定位置，而与膜片设定环的角位置无关 。

公开(公告)号：US4890133A

公开(公告)日：1989-12-26

申请号：US280586

申请日：1988-12-06

申请人： Ryota Ogawa ,  Shigeo Toji ,  Kazushi Yoshida ,  Zenichi Okura

发明人： Ryota Ogawa ,  Shigeo Toji ,  Kazushi Yoshida ,  Zenichi Okura

IPC分类号： G02B7/08

CPC分类号： G02B7/08

摘要： In an autofocus camera, at least one lens of a photographing lens system serves as a focus lens which is reciprocatively moved by a drive unit along a predetermined optical path. A detector detects a position of the focus lens in the lens system. On the basis of the detected position, a calculator calculates a correction amount of a spherical aberration of the lens system. A controller controls the drive unit on the basis of the calculated correction amount so as to cause the drive unit to move the focus lens to a position where the spherical aberration of the lens system is corrected.

摘要翻译： 在自动对焦照相机中，摄影镜头系统的至少一个透镜用作通过驱动单元沿着预定光路往复运动的聚焦透镜。 检测器检测聚焦透镜在透镜系统中的位置。 基于检测到的位置，计算器计算透镜系统的球面像差的校正量。 控制器基于所计算的校正量来控制驱动单元，以使驱动单元将聚焦透镜移动到校正透镜系统的球面像差的位置。