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91.发明授权
公开(公告)号：US4349258A
公开(公告)日：1982-09-14
申请号：US177186
申请日：1980-08-11
申请人： Kiyoshi Kitai , Masaru Kobayashi , Tadashi Nakagawa , Hiroaki Ishida , Masanori Watanabe , Yuzuru Takazawa
发明人： Kiyoshi Kitai , Masaru Kobayashi , Tadashi Nakagawa , Hiroaki Ishida , Masanori Watanabe , Yuzuru Takazawa
摘要： A focal point adjusting and change-over mechanism for an automatic focusing camera, including a mechanism for restricting a position of the camera photographic lens in response to a distance sensing signal, and a change-over mechanism manually operable to at least two positions including an automatic position and a manual position. The restricting mechanism is operative to provide automatic focusing of the lens when the change-over mechanism is set at a position for automatic operation, and the change-over mechanism renders the distance sensing signal or the restricting mechanism inoperative when set at the position for manual operation, and thereby manual focusing is carried out in accordance with the manually set position of the change-over mechanism in the manual position.
摘要翻译： 一种用于自动聚焦照相机的焦点调节和转换机构，包括用于响应于距离感测信号限制照相机摄影透镜的位置的机构，以及手动操作至少两个位置的转换机构，包括 自动位置和手动位置。 当转换机构设置在自动操作的位置时，限制机构可操作以提供镜头的自动对焦，并且当设置在手动位置时，转换机构使得距离感测信号或限制机构不起作用 根据手动位置中的切换机构的手动设定位置进行手动对焦。
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公开(公告)号：US4231648A
公开(公告)日：1980-11-04
申请号：US8762
申请日：1979-02-01
申请人： Kiyoshi Kitai , Tadashi Nakagawa , Hiroaki Ishida
发明人： Kiyoshi Kitai , Tadashi Nakagawa , Hiroaki Ishida
CPC分类号： G03B3/10
摘要： An automatic focusing apparatus for use in a camera has an operating member which moves from a rest position to a depressed position. An actuating member is rotatably mounted on the operating member and a detecting member is mounted for movement from a first position to a second position and is biased normally into the first position. The actuating member enables the detecting member to move from the first to the second position in response to the movement of the operating member from the rest position to the depressed position and disengages from the detecting member when the operating member is in the depressed position to enable the detecting member to move from the second position to the first position under the action of its bias. A device produces an electric signal corresponding to the position of the detecting member and a focus scanning member is movable over its entire focus scanning range in response to the movement of the detecting member between its first and second positions. An electro-magnet is provided for stopping the movement of the detecting member during its movement from the second to the first position when the electro-magnet is actuated. A focus detecting module receives a signal from the device synchronously with the movement of the focus scanning member during the movement of the detecting member to the second position to determine the signal from the device corresponding to the in-focus position and for actuating the electro-magnet to stop the return movement of the detecting member to its first position when the signal from the device is equal to that determined for the in-focus position. In this way, the camera lens can be focused with reduced error.
摘要翻译： 用于照相机的自动对焦装置具有从静止位置移动到按压位置的操作构件。 致动构件可旋转地安装在操作构件上，并且检测构件安装成用于从第一位置移动到第二位置并且被正常地偏置到第一位置。 致动构件使得检测构件能够响应于操作构件从静止位置移动到凹陷位置而从第一位置移动到第二位置，并且当操作构件处于按压位置时能够从检测构件脱离，以使得能够 检测构件在其偏压的作用下从第二位置移动到第一位置。 装置产生对应于检测构件的位置的电信号，并且聚焦扫描构件可响应于检测构件在其第一和第二位置之间的移动而在整个焦点扫描范围内移动。 设置电磁体，用于当电磁体被致动时，阻止检测部件从第二位置移动到第一位置时的运动。 焦点检测模块在检测构件移动到第二位置期间与聚焦扫描构件的运动同步地接收来自装置的信号，以确定来自对应于对焦位置的装置的信号， 磁体，用于当来自装置的信号等于为对焦位置确定的信号时，将检测构件的返回运动停止到其第一位置。 以这种方式，相机镜头可以以减少的误差进行聚焦。
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公开(公告)号：US4217051A
公开(公告)日：1980-08-12
申请号：US917197
申请日：1978-06-20
申请人： Tadashi Nakagawa , Ichiro Nemoto
发明人： Tadashi Nakagawa , Ichiro Nemoto
CPC分类号： G03B9/62
摘要： A camera shutter has a control member movable when the shutter is released for successively actuating an opening member and a closing member to effect the taking of an exposure. A delay mechanism coacts with the control member to effect the selective setting of a range of exposure times including a minimum exposure time by which the control member actuates the opening and closing members without interaction of the delay mechanism, a next to the minimum exposure time by which the control member engages with the delay mechanism prior to actuating the opening and closing members, and one or more longer exposure times by which the control member actuates the opening member and then engages with the delay mechanism prior to actuating the closing member. The engagement of the control member and delay mechanism prior to actuation of the opening and closing members, in the next to the minimum exposure time mode, compensates for unstable motion of the control member at the initial stage of movement thereof under control of the delay mechanism thereby ensuring exposure accuracy.
摘要翻译： 当快门被释放以相继地致动打开构件和关闭构件以实现曝光时，相机快门具有可移动的控制构件。 延迟机构与控制构件共同作用以选择性地设定曝光时间范围，包括最小曝光时间，通过该最小曝光时间，控制构件在不与延迟机构相互作用的情况下致动打开和关闭构件，接近最小曝光时间 所述控制构件在致动所述打开和关闭构件之前与所述延迟机构接合，以及一个或多个更长的曝光时间，通过所述曝光时间，所述控制构件致动所述打开构件，然后在致动所述关闭构件之前与所述延迟机构接合。 在接近最小曝光时间模式之前，控制构件和延迟机构在致动开闭构件之前的接合在延迟机构的控制下补偿控制构件在其初始运动阶段的不稳定运动 从而确保曝光精度。
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公开(公告)号：US4205909A
公开(公告)日：1980-06-03
申请号：US917198
申请日：1978-06-20
申请人： Kiyoshi Kitai , Tadashi Nakagawa
发明人： Kiyoshi Kitai , Tadashi Nakagawa
CPC分类号： G03B9/18
摘要： A camera shutter has a set of opening blades and a set of closing blades sequentially driven from cocked positions to released positions to effect an exposure. During cocking of the shutter, the opening and closing blades are driven to their cocked positions by opening and closing mechanisms which include springs for permitting continued movement of the opening and closing mechanisms in the cocking direction after the opening and closing blades are driven to their cocked positions. Upon completion of the movement of the opening and closing blades to their cocked positions, the springs undergo further compression thereby permitting continued cocking movement of the opening and closing mechanisms independent of the opening and closing blades.
摘要翻译： 照相机快门具有一组开启叶片和一组关闭叶片，其顺序地从起始位置驱动到释放位置以进行曝光。 在挡板启动时，通过打开和关闭机构，打开和关闭叶片被打开和关闭机构驱动，打开和关闭机构包括弹簧，用于在打开和关闭叶片被驱动到它们的压头之后允许打开和关闭机构在起动方向上继续移动 职位 当打开和关闭叶片移动到它们的旋转位置完成时，弹簧经受进一步的压缩，从而允许打开和关闭机构的独立于打开和关闭叶片的持续的启动运动。
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公开(公告)号：US4184761A
公开(公告)日：1980-01-22
申请号：US954864
申请日：1978-10-26
申请人： Tadashi Nakagawa , Ichiro Nemoto
发明人： Tadashi Nakagawa , Ichiro Nemoto
摘要： An exposure control device for the shutter of a camera wherein an opening member opens the aperture of the shutter to start exposure, a closing member closes the aperture to complete exposure, an opening hook and a closing hook retain at a charged position the opening member and the closing member, respectively. A control member is released by shutter release operation to control the exposure time by shutter release operation to control the exposure time and to successively release said opening member and said closing member. A governor delays the motion of said control member in proportion to desired exposure times. An interlocking lever is adjustable to a first range where it is actuated by the movement of the control member to push the closing hook and to a second range where it is actuated by the movement of the opening member to push the closing hook. An adjusting lever supports the interlocking lever operable within the first and second ranges. A cam member changesover the adjusting lever in proportion to the desired exposure time.
摘要翻译： 一种用于相机快门的曝光控制装置，其中打开构件打开快门的开口以开始曝光，关闭构件封闭孔以完成曝光，打开钩和闭合钩保持在打开构件的充电位置， 关闭成员。 通过快门释放操作释放控制构件，通过快门释放操作来控制曝光时间，以控制曝光时间并依次释放所述打开构件和所述关闭构件。 调速器以所需的曝光时间成比例地延迟所述控制构件的运动。 联动杆可调节到第一范围，在该第一范围内，通过控制构件的移动来推动闭合钩，并且通过打开构件的运动致动其推动闭合钩的第二范围。 调节杆支撑在第一和第二范围内可操作的互锁杆。 凸轮构件与所需的曝光时间成比例地转换调节杆。
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公开(公告)号：US4145132A
公开(公告)日：1979-03-20
申请号：US751161
申请日：1976-12-16
CPC分类号： G03B9/18
摘要： A camera shutter mechanism including a shutter opening member mounted for pivoting about a first axis between a closed position corresponding to a closed shutter and an open position corresponding to an open shutter, and a shutter closing member mounted for pivoting about a second axis between an open position corresponding to an open shutter and a closed position corresponding to a closed shutter. A movable driving member includes a coupling mechanism for releasably coupling the driving member to the shutter opening member to permit moving the shutter opening member by moving the driving member, and for releasing the shutter opening member from the driving member when the shutter opening member is moved from the open to the closed position. A first spring biases the driving member to move the shutter opening member from the closed to the opened position to initiate exposure, and a second spring biases the shutter closing member to move from the opened to the closed position to terminate exposure. A drive transmission lever mounted on the driving member is positioned for responding to movement of the shutter closing member to the closed position for returning the shutter opening member to the closed position.
摘要翻译： 一种照相机快门机构，包括安装用于在对应于闭合的快门的关闭位置和对应于打开的快门的打开位置之间围绕第一轴线枢转的快门打开构件以及安装成围绕第二轴线在打开状态 对应于打开的快门和对应于闭合的快门的关闭位置的位置。 可移动的驱动构件包括用于将驱动构件可释放地联接到活门开启构件的联接机构，以允许通过移动驱动构件来移动活门开启构件，并且当活门打开构件移动时将活门打开构件从驱动构件释放 从开放到关闭的位置。 第一弹簧偏置驱动构件以将快门打开构件从关闭位置移动到打开位置以开始曝光，并且第二弹簧偏压开闭器关闭构件以从打开位置移动到闭合位置以终止曝光。 安装在驱动构件上的驱动传动杆定位成响应于活门关闭构件的运动到关闭位置，以将活门打开构件返回到关闭位置。
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公开(公告)号：US4139085A
公开(公告)日：1979-02-13
申请号：US720083
申请日：1976-09-02
IPC分类号： F16D20060101 , F16D13/64
CPC分类号： F16D13/64 , F16D2013/642
摘要： A clutch of the single-plate dry-disc type is structured to include annular friction facings secured to opposite surfaces of a supporting plate of a clutch plate and a plurality of recesses or shallow grooves are defined in the surface of one of the annular friction facings. The shallow grooves extend from the inner periphery of the one annular friction facing and terminate short of the outer periphery thereof.Accelerated air streams are introduced from the exterior through the fly wheel into the plurality of grooves so as to aid in separation of the friction facing of the clutch plate from the engaging surface of a fly wheel as a result of a hydrodynamic force created by the air streams. Furthermore, slots are defined in the surface of the friction facing in addition to the grooves so as to provide discharge passages for powder which has been produced due to wear or attrition of the friction facings.
摘要翻译： 单板干盘型的离合器被构造成包括固定到离合器板的支撑板的相对表面的环形摩擦面，并且在环形摩擦面之一的表面中限定多个凹部或浅槽 。 浅沟槽从一个环形摩擦面的内周边延伸出来，并且在其外周缘处延伸。
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公开(公告)号：US4110767A
公开(公告)日：1978-08-29
申请号：US760980
申请日：1977-01-21
CPC分类号： G03B19/12
摘要： In a single lens reflex camera, the shutter base plate is provided with a recess in which the reflecting mirror is mounted. This permits the mirror to be closer to the film plane and hence permits the imaging plane, prism and viewing lens of the view finder to be closer to the optical axis of the camera lens, thus reducing the overall size of the camera.
摘要翻译： 在单透镜反光相机中，快门基板设置有凹部，反射镜安装在该凹部中。 这允许镜子更靠近胶片平面，因此允许取景器的成像平面，棱镜和观看透镜更靠近照相机镜头的光轴，从而减小照相机的整体尺寸。
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公开(公告)号：US4092657A
公开(公告)日：1978-05-30
申请号：US636727
申请日：1975-12-01
申请人： Eiichi Onda , Mitsuo Koyama , Tadashi Nakagawa
发明人： Eiichi Onda , Mitsuo Koyama , Tadashi Nakagawa
CPC分类号： G03B9/18
摘要： An electrically operated shutter in which an exposure aperture is opened by actuation of a shutter blade opening member and closed by actuation of a shutter blade closing member and exposure time is controlled in accordance with the duration of excitation of an electromagnet. The shutter is comprised of a disengaging member for causing said shutter blade closing member to actuate upon being attracted to the electromagnet during excitation thereof, and an engaging member for causing the shutter blade opening member to actuate upon being actuated by the movement of a control member if the shutter is released. When the electromagnet is not normally energized, the disengaging member is engaged by a cam portion of the engaging member on the initial operating period of shutter release and disengaged upon lapse of a preselected time from the shutter opening operation.
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