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公开(公告)号：US4326786A
公开(公告)日：1982-04-27
申请号：US206990
申请日：1980-11-14
摘要： In a slit exposure shutter having leading and trailing blades driven to run down to make an exposure and to return to their initial positions by an electromagnetic drive source, this source is provided with electromagnetically operated latch means for holding the leading and trailing blades in either one of the terminal ends of running down and returning movement thereof. Another feature is that the above-described latch means is constructed by utilizing the magnetic attraction force of at least one of the stationary and movable electromagnetic members of the drive source.
摘要翻译： 在具有驱动下降以进行曝光并通过电磁驱动源返回到其初始位置的前叶片和后叶片的狭缝曝光闸板中，该源设置有电磁操作的闩锁装置，用于将前叶片和后叶片保持在任一个 的末端向下运动并返回其运动。 另一个特征是上述闩锁装置是通过利用驱动源的固定和可移动电磁构件中的至少一个的磁力来构成的。
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公开(公告)号：US4313658A
公开(公告)日：1982-02-02
申请号：US132100
申请日：1980-03-20
申请人： Yoji Sugiura , Nobuaki Date , Ryoichi Suzuki , Syuichiro Saito
发明人： Yoji Sugiura , Nobuaki Date , Ryoichi Suzuki , Syuichiro Saito
摘要： Disclosed is a single lens reflex camera having an electrically driven focal plane shutter. A locking arrangement locks the shutter curtains in their start positions before shutter release to prevent unintentional actuation of an exposure due to faulty operation of switches, shock, or the like. Upon completion of the upward movement of the quick return mirror, the locking mechanism is disabled.
摘要翻译： 公开了具有电驱动焦平面快门的单透镜反光相机。 锁定装置在快门释放之前将快门帘锁定在其起始位置，以防止由于开关，冲击等的故障操作而引起的曝光的意外致动。 快速返回镜向上移动完成后，锁定机构被禁用。
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公开(公告)号：US4334749A
公开(公告)日：1982-06-15
申请号：US228318
申请日：1981-01-26
申请人： Syuichiro Saito , Nobuaki Date , Ryoichi Suzuki , Yoji Sugiura
发明人： Syuichiro Saito , Nobuaki Date , Ryoichi Suzuki , Yoji Sugiura
摘要： A camera having an electromagnetic driving source for operating a focal plane shutter in the camera, includes a shutter base plate and a driving arm pivoted on the base plate for swinging movement in a plane parallel to the plate. A group of thin shutter blades are supported on the driving arm parallel to the surface of the base plate. The output shaft of a motor is coupled with the driving arm, and either one of the rotor of the motor, or a permanent magnet forming a part of the stator of the motor, provides magnetic flux parallel to the axis of the output shaft, thereby causing the rotor to rotate the output shaft and drive the focal plane shutter.
摘要翻译： 具有用于在相机中操作焦平面快门的电磁驱动源的相机包括快门基板和枢转在基板上的驱动臂，用于在平行于平板的平面中摆动。 一组薄的快门叶片平行于基板的表面支撑在驱动臂上。 电动机的输出轴与驱动臂连接，电动机的转子或形成电动机定子的一部分的永磁体中的任一个提供平行于输出轴的磁通的磁通量，由此 使转子旋转输出轴并驱动焦平面快门。
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公开(公告)号：US4313659A
公开(公告)日：1982-02-02
申请号：US142750
申请日：1980-04-22
IPC分类号： G03B9/36 , G03B9/18 , G03B9/42 , H02K41/035
摘要： In the slit exposure shutter disclosed, front and rear shutter blades carry permanent magnets along a passage of electromagnets which are excited to repel the permanent magnets and cause the blades to float in the gaps of the electromagnets.
摘要翻译： 在所公开的狭缝曝光闸板中，前挡板叶片和后挡板叶片沿着电磁铁的通道携带永磁体，其被激励以排斥永磁体并使叶片浮在电磁铁的间隙中。
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公开(公告)号：US4290682A
公开(公告)日：1981-09-22
申请号：US162323
申请日：1980-06-23
申请人： Syuichiro Saito , Takashi Uchiyama , Syozo Yoshida
发明人： Syuichiro Saito , Takashi Uchiyama , Syozo Yoshida
摘要： In the slit shutter disclosed, an actuator transmits the rotational force of an electromagnetic drive arrangement to move shutter blades through opening and closing cycles. A spring arrangement for engaging the actuating means serves to aid the shutter movement at the beginning of the cycle and retard the shutter movement at the end of each cycle while the spring arrangement is energized during its retarding action. According to an embodiment of the invention, the spring arrangement encounters an arm of the actuator at the end of each cycle, absorbs the arm movement during the retardation, and uses the energization to aid the movement at the start of the next cycle. The spring arrangement again encounters the arm at the end of the next cycle.
摘要翻译： 在所公开的狭缝闸门中，致动器传递电磁驱动装置的旋转力以通过打开和关闭循环移动快门叶片。 用于接合致动装置的弹簧装置用于在循环开始时帮助快门运动，并且在弹簧装置在其延迟动作期间通电期间延迟每个循环结束时的快门运动。 根据本发明的实施例，弹簧装置在每个周期结束时遇到致动器的臂，在延迟期间吸收臂运动，并且在下一循环开始时使用通电来辅助运动。 在下一个周期结束时，弹簧布置再次遇到了手臂。
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公开(公告)号：US4751544A
公开(公告)日：1988-06-14
申请号：US915022
申请日：1986-10-03
申请人： Syuichiro Saito
发明人： Syuichiro Saito
摘要： A diaphragm device having a plurality of blades defining an aperture opening whose size is varied by a stepwise drive. For the adjustment of the size to small values, the driving of the diaphragm blades is controlled in such a manner that they are first driven excessively by at least one step and then backward by the corresponding number of steps to that excess.
摘要翻译： 一种隔膜装置，具有多个叶片，其限定孔径开口，其尺寸通过逐步驱动而变化。 为了将尺寸调整为小值，以这样的方式控制光阑叶片的驱动，使得它们首先被过度驱动至少一个步骤，然后向后移动相当数量的步骤。
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公开(公告)号：US4367938A
公开(公告)日：1983-01-11
申请号：US295013
申请日：1981-08-21
申请人： Syozo Yoshida , Syuichiro Saito
发明人： Syozo Yoshida , Syuichiro Saito
摘要： An electromagnetically driven shutter for use in a photographic camera has blades driven by an electromagnetic drive source to move in vertical directions. The electrical power supply control means for the electromagnetic drive source is provided with means for detecting the photographic posture of the camera, whereby the output torque of the electromagnetic drive source is changed as the camera posture changes. This is done in order to insure that the speed of movement of the shutter blades is maintained constant regardless of whether or not the camera is positioned normally, or upside down.
摘要翻译： 用于照相机的电磁驱动的快门具有由电磁驱动源驱动的刀片，以在垂直方向上移动。 用于电磁驱动源的电源控制装置设置有用于检测照相机的照相姿势的装置，由此随着照相机姿态的变化，电磁驱动源的输出转矩变化。 这样做是为了确保快门叶片的移动速度保持恒定，而不管相机是否正确定位或倒置。
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公开(公告)号：US4353632A
公开(公告)日：1982-10-12
申请号：US221632
申请日：1980-12-31
申请人： Syuichiro Saito , Masanori Uchidoi
发明人： Syuichiro Saito , Masanori Uchidoi
CPC分类号： G03B9/18
摘要： In the disclosed device, an electromagnetic drive source in the form of a stator and rotor opens and closes shutter blades. A magnet sensor senses the displacement phase of the rotor, or any member operated by the rotor, to produce a timing signal at a predetermined position of the shutter during exposure. According to an embodiment of the invention, the timing signal is used for synchronizing a flash unit and the sensor is a reed switch.
摘要翻译： 在所公开的设备中，定子和转子形式的电磁驱动源打开和关闭快门叶片。 磁体传感器感测转子或由转子操作的任何部件的位移相位，以在曝光期间在快门的预定位置处产生定时信号。 根据本发明的实施例，定时信号用于使闪光单元同步，传感器是簧片开关。
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公开(公告)号：US4351596A
公开(公告)日：1982-09-28
申请号：US216431
申请日：1980-12-15
申请人： Takehiko Ohniwa , Syuichiro Saito
发明人： Takehiko Ohniwa , Syuichiro Saito
CPC分类号： G03B9/08
摘要： A moving coil type electromagnetic driving source designed to obtain reliable contact between slide pieces and current supply brushes for supplying current to the moving coil wherein each slide piece is provided with grooves having two inclined surfaces opposed to each other, with an elastic brush having a circular or semi-circular section being provided for each groove such that the brush is in contact with the groove at two points.
摘要翻译： 一种动圈式电磁驱动源，其特征在于，为了获得滑动片和用于向动圈供给电流的电流刷之间的可靠接触，其中每个滑动片设置有具有彼此相对的两个倾斜表面的凹槽，弹性刷具有圆形 或每个凹槽设置的半圆形部分，使得刷子在两个点处与凹槽接触。
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公开(公告)号：US5032863A
公开(公告)日：1991-07-16
申请号：US488449
申请日：1990-02-27
申请人： Nobuaki Date , Akio Sunouchi , Syuichiro Saito , Yoshitaka Murata , Yukio Ogawa , Nobuo Tezuka
发明人： Nobuaki Date , Akio Sunouchi , Syuichiro Saito , Yoshitaka Murata , Yukio Ogawa , Nobuo Tezuka
摘要： A shutter device for a still video camera comprises first and second shutter blades, a latch member and an unlatch member. The latch member latches the first blade at its moved position where an image pickup element is exposed to an image light. The first blade is kept latched for a preparatory exposure to correct a set exposure value on the basis of the output of the pickup element or for picking up a motion picture. The unlatch member releases the latching of the first blade. In one embodiment, the unlatch member is provided on the second blade to unlatch the first blade when the second blade is moved to terminate the exposure. In other embodiments, the unlatch member includes an electromagnet to unlatch the first blade.A still video camera comprises a view finder mirror and a mirror operating mechanism. The mechanism includes a motor and is arranged to retract and return the mirror relative to an optical path by utilizing a normal and a reverse rotation of the motor, respectively.In the disclosed embodiments, the camera further comprises a mechanism to maintain the mirror in the retracted condition and a shutter in the opened condition to operate in a motion video mode where an image pickup element is continuously exposed to an image light. The mechanism for setting in the motion video mode may be operable manually from the exterior of the camera or by connecting an external device to the camera.
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