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公开(公告)号：US5875363A
公开(公告)日：1999-02-23
申请号：US954741
申请日：1997-10-20
申请人： Seiichi Imano , Kazuo Akimoto
发明人： Seiichi Imano , Kazuo Akimoto
CPC分类号： G03B7/10
摘要： A camera shutter is capable of switching between a spring-drive mode and a motor-drive mode through a single electromagnet without performing an exposure operation. A control circuit controls a stepping motor for rotating a driving ring and the electromagnet for controlling the opening and closing operations of the diaphragm. A control circuit operates in a mode in which a first switch is turned ON, and in another mode in which a second switch is turned ON. When the first and second switches are turned ON, a normal photographing operation can be performed. However, when the first switch is turned ON and then OFF while keeping the second switch OFF, a power supply stop signal is transmitted to the electromagnet so that a closing sector is released from its restrained condition allowing the shutter to return to its initial state. When a photographer presses a shutter button after changing the mode, a photographing operation can be performed in the changed mode without the necessity of completing an exposure operation in the first selected mode.
摘要翻译： 相机快门能够通过单个电磁体在弹簧驱动模式和电动机驱动模式之间切换而不进行曝光操作。 控制电路控制用于旋转驱动环的步进电机和用于控制隔膜的打开和关闭操作的电磁体。 控制电路在第一开关导通的模式下工作，而在第二开关接通的另一模式中操作。 当第一和第二开关接通时，可以执行正常的拍摄操作。 然而，当第一开关在保持第二开关断开的同时将第一开关接通然后断开时，电源停止信号被传送到电磁体，使得关闭扇区从允许快门恢复到初始状态的约束条件解除。 当摄影者在改变模式之后按下快门按钮时，可以以改变的模式执行拍摄操作，而不需要在第一选择模式中完成曝光操作。
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公开(公告)号：US5701537A
公开(公告)日：1997-12-23
申请号：US410056
申请日：1995-03-24
申请人： Kazuo Akimoto , Seiichi Imano
发明人： Kazuo Akimoto , Seiichi Imano
摘要： A camera shutter includes a driving member rotated in forward and reverse directions by a motor and having first and second control portions. A switching circuit switches an operating starting position of the driving member between first and second positions. An opening member is controlled by the first control portion of the driving member and a first biasing member biases the opening member in the direction of opening the shutter. A first restraint member restrains an operation of the opening member and resists the bias of the first biasing member. A closing member is controlled by the second control portion of the driving member and a second biasing member biases the closing member in the direction of closing the shutter. A second restraint member restrains an operation of the closing member and resists the bias of the second biasing member. When the driving member starts its operation from the first position, the opening member is restrained by the first control portion of the driving member, and when the driving member starts its operation from the second position, the opening member is restrained by the first restraint member.
摘要翻译： 相机快门包括通过马达在正反方向上旋转并具有第一和第二控制部分的驱动部件。 切换电路将驱动部件的动作开始位置切换为第一位置和第二位置。 打开构件由驱动构件的第一控制部分控制，并且第一偏压构件沿打开快门的方向偏压打开构件。 第一限制构件限制打开构件的操作并抵抗第一偏置构件的偏压。 关闭构件由驱动构件的第二控制部分控制，并且第二偏置构件沿关闭活门的方向偏压关闭构件。 第二限制构件限制关闭构件的操作并抵抗第二偏压构件的偏压。 当驱动构件从第一位置开始操作时，开启构件被驱动构件的第一控制部分约束，并且当驱动构件从第二位置开始操作时，开启构件被第一限制构件 。
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公开(公告)号：US5679988A
公开(公告)日：1997-10-21
申请号：US532158
申请日：1995-09-22
申请人： Akihiro Ito , Miyoshi Tanikawa , Kazuo Akimoto , Shigeru Tagami , Masaki Tanaka
发明人： Akihiro Ito , Miyoshi Tanikawa , Kazuo Akimoto , Shigeru Tagami , Masaki Tanaka
CPC分类号： H02K33/16 , H02K1/2726
摘要： A rocking motor comprises a coil wound around a hollow coil bobbin. A rotor is rotatably mounted at a position close to an end portion of the coil bobbin. The rotor has a center shaft and a permanent magnet and is magnetized with two poles such that the positions of the poles are located close to the coil and the magnetization angle is greater than 90 degrees but less than 180 degrees. The positions of the poles of the rotor and the coil are adjacent to one another so that a rotary torque can be efficiently obtained by a magnetic force generated by the coil. The rocking motor can generate a high power output with a relatively low power supply and its operational performance is not adversely affected by an external magnetic field.
摘要翻译： 摇摆马达包括缠绕在中空线圈架上的线圈。 转子可旋转地安装在靠近线圈架的端部的位置。 转子具有中心轴和永磁体，并被磁化为两极，使得极的位置靠近线圈并且磁化角大于90度但小于180度。 转子和线圈的极的位置彼此相邻，使得可以通过线圈产生的磁力有效地获得旋转扭矩。 摇摆马达可以产生具有相对低的电源的高功率输出，并且其运行性能不受外部磁场的不利影响。
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公开(公告)号：US5255049A
公开(公告)日：1993-10-19
申请号：US871368
申请日：1992-04-20
申请人： Kazuo Akimoto , Shinji Miyata , Yoshiyuki Iwamatsu , Hiroko Fujita , Mitsuhiro Kakuta , Tomoki Nakamura
发明人： Kazuo Akimoto , Shinji Miyata , Yoshiyuki Iwamatsu , Hiroko Fujita , Mitsuhiro Kakuta , Tomoki Nakamura
摘要： A shutter control device for a camera includes a control arrangement for controlling the opening and closing of the shutter as a function of an exposure value and a diaphragm value. The control arrangement stores values corresponding to a predetermined diaphragm setting, and employs the parameters of the predetermined setting and the exposure value and diaphragm value in order to determine the opening time of the shutter. In another arrangement, the control arrangement determines the effective exposure time as a function of the brightness of the object, distance to the object and a diaphragm, and employs this effective exposure time and a stored correction factor to determine the actual exposure time.
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公开(公告)号：US5220376A
公开(公告)日：1993-06-15
申请号：US719880
申请日：1991-06-24
申请人： Shigeru Tagami , Kazuo Akimoto , Kanji Ito , Katsuhiko Matsushita
发明人： Shigeru Tagami , Kazuo Akimoto , Kanji Ito , Katsuhiko Matsushita
摘要： A camera shutter system has a motor driven sector for opening and closing a shutter opening. A photo-interruptor is positioned to intercept a light beam, to effect the outputting by the photo-interruptor of a signal pulse corresponding to the speed of the shutter. A memory storing exposure data, such as a matrix memory, is accessible as a function of the speed signal and an exposure quantity that is a function of the brightness of the brightness of an object to be photographed. The accessed exposure data is modified as a function of an observed exposure quantity.
摘要翻译： 相机快门系统具有用于打开和关闭快门开口的马达驱动扇区。 一个光电断路器被定位成拦截一个光束，以实现由光电断路器对应于快门速度的信号脉冲的输出。 存储存储曝光数据的存储器，例如矩阵存储器，可以作为速度信号和作为要拍摄对象的亮度亮度的函数的曝光量的函数来访问。 所访问的曝光数据被修改为观察到的曝光量的函数。
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公开(公告)号：US5140362A
公开(公告)日：1992-08-18
申请号：US232435
申请日：1988-08-15
申请人： Yukio Morino , Kazuo Akimoto
发明人： Yukio Morino , Kazuo Akimoto
IPC分类号： G03B9/10
CPC分类号： G03B9/10
摘要： A shutter for a single lens reflex camera performs exposure operation by means of a drive motor after closing once an opening responding to release operation from a state that the shutter opening is opened.Said shutter provides a drive member actuated by the drive motor, an operating member which opens and closes the shutter opening by actuating a shutter blade actuated by said drive member, holding means for holding said operating member at an opened position of the shutter opening and means for closing said shutter blade rapidly at the initial stage of actuation of said drive motor.
摘要翻译： 用于单镜头反光相机的快门在从打开快门开启的状态开始响应于释放操作的关闭之后，借助于驱动马达执行曝光操作。 所述挡板提供由驱动马达驱动的驱动构件，操作构件通过致动由所述驱动构件致动的快门叶片来打开和关闭闸门开口;保持装置，用于将所述操作构件保持在闸门开口的打开位置， 用于在所述驱动马达的启动的初始阶段快速关闭所述快门叶片。
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公开(公告)号：US4929977A
公开(公告)日：1990-05-29
申请号：US377674
申请日：1989-07-10
申请人： Tadashi Ishikawa , Shigeru Tagami , Kazuo Akimoto , Hiroto Tsuyuki , Michio Kawai , Kanji Ito , Takayuki Sato , Takahito Otora , Teruyo Hayakawa
发明人： Tadashi Ishikawa , Shigeru Tagami , Kazuo Akimoto , Hiroto Tsuyuki , Michio Kawai , Kanji Ito , Takayuki Sato , Takahito Otora , Teruyo Hayakawa
摘要： In a camera having a lens shutter and a focal-plane shutter accomplishing the operations of programed exposure and aperture control, a flash photography changeover device includes a first changeover circuit for setting a lens shutter mode for operating the lens shutter as a programed shutter or a focal-plane shutter mode for controlling the shutter speed by the focal-plane shutter and the aperture by the lens shutter; a first driving device for controlling the programed exposure value and/or the aperture value of the lens shutter; a second driving device for controlling the shutter speed of the focal-plane shutter; a sequence control circuit for controlling the operating timings of the two driving devices; a setting circuit for selecting and setting automatic exposures with a natural light and a flash light; and a coercive changeover circuit for setting the lens shutter mode irrespective of the setting of the first changeover circuit when the setting circuit is set to the automatic exposure with the flash light. The setting circuit and the coercive changeover circuit may be replaced by a determining circuit for detecting and determining a limit shutter speed at which the focal-plane shutter is synchronized with the flash light; and a coercive changeover circuit for setting the lens shutter mode irrespective of the setting of the first changeover circuit for setting the shutter mode, when the determining circuit determines that the shutter speed exceeds the limit speed.
摘要翻译： 在具有实现编程曝光和光圈控制的操作的透镜快门和焦平面快门的相机中，闪光摄影切换装置包括：第一转换电路，用于设置用于操作透镜快门的镜头快门模式作为编程快门或 焦平面快门模式，用于通过焦平面快门控制快门速度和透镜快门的光圈; 用于控制所述编程曝光值和/或所述透镜快门的光圈值的第一驱动装置; 用于控制焦平面快门的快门速度的第二驱动装置; 用于控制两个驱动装置的操作定时的顺序控制电路; 用于用自然光和闪光灯选择和设置自动曝光的设置电路; 以及用于设置透镜快门模式的矫顽力转换电路，而不管第一切换电路的设置如何，当设置电路被设置为用闪光灯自动曝光时。 设置电路和矫顽转换电路可以由用于检测和确定焦平面快门与闪光灯同步的限制快门速度的确定电路来代替; 以及当确定电路确定快门速度超过极限速度时，用于设置透镜快门模式的矫顽转换电路，而不管设置快门模式的第一转换电路的设置。
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