-
公开(公告)号：US5060000A
公开(公告)日：1991-10-22
申请号：US427037
申请日：1989-10-25
申请人： Masuo Ogihara , Hiroyuki Ishida , Shinji Nagaoka , Youichi Seki , Shigeru Tagami , Hiroshi Yamazaki , Nobuo Shinozaki
发明人： Masuo Ogihara , Hiroyuki Ishida , Shinji Nagaoka , Youichi Seki , Shigeru Tagami , Hiroshi Yamazaki , Nobuo Shinozaki
摘要： A drive ring drivable by a stepping motor is normally urged by a spring to turn in one direction around a lens aperture. When not in use, the stepping motor is not subjected to the resilient force from the spring since the drive ring is locked against rotation by a ratchet wheel engaged by an engagement lever. The stepping motor is therefore not subjected to undue stresses and is prevented from malfunctioning. Consequently, focusing failures and exposure adjustment failures which could otherwise arise from malfunctioning of the stepping motor are prevented from occurring. In operation, a solenoid is energized to move the engagement lever out of engagement with the ratchet wheel, which is then freed to allow the drive ring to be turned by the stepping motor.
摘要翻译： 由步进电机驱动的驱动环通常由弹簧推动以围绕透镜孔向一个方向转动。 当不使用时，步进电机不受弹簧的弹力，因为驱动环被接合杆啮合的棘轮锁定以防旋转。 因此，步进电机不会受到过大的应力，并且不会发生故障。 因此，防止由于步进电机故障引起的聚焦故障和曝光调整故障发生。 在操作中，螺线管被通电以将接合杆移动脱离与棘轮的接合，然后释放该棘轮，以允许驱动环由步进电机转动。
-
公开(公告)号：US4881096A
公开(公告)日：1989-11-14
申请号：US15169
申请日：1987-02-17
申请人： Masuo Ogihara , Hiroyuki Ishida , Shinji Nagaoka , Youichi Seki , Shigeru Tagami , Hiroshi Yamazaki , Nobuo Shinozaki
发明人： Masuo Ogihara , Hiroyuki Ishida , Shinji Nagaoka , Youichi Seki , Shigeru Tagami , Hiroshi Yamazaki , Nobuo Shinozaki
摘要： A camera shutter has an automatic focusing lens operative when actuated to effect an automatic focusing operation. An actuating ring is normally placed in a non-operating region and momentarily shifted to an operating region during the automatic focusing operation. The actuating ring is sequentially displaceable in forward and reverse direction through the operating region to actuate the automatic focusing lens, and displaceable in the forward and reverse directions in the non-operating region without effecting actuation of the automatic focusing lens. A ratchet mechanism is coupled to the actuating ring for selectively locking and unlocking the actuating ring in the non-operating region in response to the displacement thereof in the forward and reverse directions. A bi-directionally rotatable stepping motor is connected to drive the actuating ring to displace the same in the forward and reverse directions.
摘要翻译： 相机快门具有自动聚焦透镜，当被致动时可操作以实现自动聚焦操作。 致动环通常放置在非操作区域中，并且在自动对焦操作期间暂时移动到操作区域。 致动环可以在正向和反向方向上顺序地通过操作区域移动，以启动自动聚焦透镜，并且在非操作区域中可沿前后方向移位，而不影响自动聚焦透镜的致动。 棘轮机构联接到致动环，用于响应于其在正向和反向的位移而选择性地在非操作区域中锁定和解锁致动环。 连接双向旋转的步进电动机以驱动致动环，以沿前后方向使其移动。
-
公开(公告)号：US4693583A
公开(公告)日：1987-09-15
申请号：US766032
申请日：1985-08-15
申请人： Masuo Ogihara , Hajime Oda , Yoichi Seki , Hiroshi Yamazaki
发明人： Masuo Ogihara , Hajime Oda , Yoichi Seki , Hiroshi Yamazaki
CPC分类号： G03B7/095
摘要： A programmable shutter of the type wherein a shutter blade is opened and closed by means of a stepping motor. The motor is rotated in a forward direction by drive pulses of a predetermined fixed period to gradually open a sector while at the same time a light measuring circuit is started. Thus, at the time when an appropriate exposure quantity is reached, the direction of rotation of the motor is forcibly reversed to effect closing of the sector to attain simultaneous measurement of light and exposure.
摘要翻译： 这种类型的可编程快门，其中快门叶片通过步进电机打开和关闭。 电动机通过预定固定周期的驱动脉冲沿正向旋转，以逐渐打开扇形，同时启动光测量电路。 因此，当达到适当的曝光量时，马达的旋转方向被强制地反转，以实现扇区的闭合，以同时测量光和曝光。
-
公开(公告)号：US5006880A
公开(公告)日：1991-04-09
申请号：US342660
申请日：1989-04-24
申请人： Masuo Ogihara , Hajime Oda , Yoichi Seki , Hiroshi Yamazaki
发明人： Masuo Ogihara , Hajime Oda , Yoichi Seki , Hiroshi Yamazaki
CPC分类号： G03B7/095
摘要： A programmable shutter of the type wherein a shutter blade is opened and closed by means of a stepping motor. The motor is rotated in a forward direction by drive pulses of a predetermined fixed period to gradually open a sector while at the same time a light measuring circuit is started. Thus, at the time when an appropriate exposure quantity is reached, the direction of rotation of the motor is forcibly reversed to effect closing of the sector to attain simultaneous measurement of light and exposure.
-
公开(公告)号：US4696560A
公开(公告)日：1987-09-29
申请号：US730743
申请日：1985-05-06
申请人： Masuo Ogihara , Hajime Oda , Yoichi Seki , Hiroshi Yamazaki
发明人： Masuo Ogihara , Hajime Oda , Yoichi Seki , Hiroshi Yamazaki
CPC分类号： G03B7/097
摘要： In a program shutter having a sector which is opened and closed by a step motor, there is provided a home position detection means for detecting whether or not the sector is positioned in a home position. Before and after an exposure operation, it is detected whether or not the sector is positioned in the home position, and if the sector is not positioned in the home position, the step motor is reversely rotated to complete the closing movement of the sector.
摘要翻译： 在具有由步进电机打开和关闭的扇区的程序快门中，提供了一个用于检测扇区是否位于原始位置的原点位置检测装置。 在曝光操作之前和之后，检测扇区是否位于原始位置，并且如果扇区不位于原始位置，则步进电机反向旋转以完成扇区的关闭运动。
-
公开(公告)号：US4697908A
公开(公告)日：1987-10-06
申请号：US706505
申请日：1985-02-28
申请人： Masuo Ogihara , Hajime Oda , Yoichi Seki , Hiroshi Yamazaki
发明人： Masuo Ogihara , Hajime Oda , Yoichi Seki , Hiroshi Yamazaki
CPC分类号： G03B7/10
摘要： A program shutter has a shutter mechanism comprised of at least one sector movable in opening and closing directions in response to forward and reverse rotation of a step motor to form a lens aperture. A control unit automatically controls the shutter operation and comprises an exposure quantity storage circuit for storing exposure quantity data corresponding to the brightness of a subject being photographed, a motor control data storage circuit for storing step drive number data proportional to the exposure quantity data and interpolation quantity data corresponding to the exposure quantity data, a pulse generator circuit for generating step drive pulses and clock pulses, a first presettable counter preset with the step drive number data before opening of the sector and downcounted to zero by the drive pulses, a second presettable counter preset with the interpolation quantity data and downcounted to zero by the clock pulses beginning at a time after the first counter has downcounted to zero, a reverse drive circuit for detecting when the second counter has counted down to zero and thereafter effecting rotation of the step motor in the reverse direction, and a motor drive circuit for rotationally driving the step motor according to the drive pulses generated by the pulse generator circuit means.
摘要翻译： 程序快门具有快门机构，该快门机构包括响应于步进电动机的正向和反向旋转而形成透镜孔径的至少一个可在打开和关闭方向移动的扇区。 控制单元自动控制快门操作，并且包括曝光量存储电路，用于存储与被拍摄对象的亮度相对应的曝光量数据;电动机控制数据存储电路，用于存储与曝光量数据成比例的步进驱动数量数据和插值 与曝光量数据相对应的数量数据，用于产生步进驱动脉冲和时钟脉冲的脉冲发生器电路，通过扇区打开之前的步进驱动数据数据预先设置的第一可预置计数器，并由驱动脉冲计数为零;第二预设计 计数器用插补量数据预设，并且在第一计数器已经计数到零之后的时间开始的时钟脉冲计数为零;反向驱动电路，用于检测第二计数器何时计数到零，然后进行步骤 电动机反向运动，电动机驱动电路 根据由脉冲发生器电路装置产生的驱动脉冲旋转地驱动步进电动机。
-
公开(公告)号：US4702579A
公开(公告)日：1987-10-27
申请号：US766031
申请日：1985-08-15
申请人： Masuo Ogihara , Hajime Oda , Yoichi Seki , Hiroshi Yamazaki
发明人： Masuo Ogihara , Hajime Oda , Yoichi Seki , Hiroshi Yamazaki
CPC分类号： G03B7/24
摘要： A device which includes means for detecting a film sensitivity code based upon International Standardization Organization and provided on a film cartridge when the film cartridge is loaded, whereby it is determined whether or not a film is one whose cartridge has a code provided thereon by adding 1 to the film sensitivity code detected the means to detect if a carry-over appears or not.
摘要翻译： 一种装置，其包括用于检测基于国际标准化组织的胶片敏感性代码并且当胶片暗盒被装载时在暗盒上提供的装置，由此确定胶片是否是其胶卷具有其上提供的代码的装置， 检测到电影敏感度代码检测是否出现结转的方法。
-
公开(公告)号：US4648701A
公开(公告)日：1987-03-10
申请号：US734039
申请日：1985-05-14
申请人： Masuo Ogihara , Hajime Oda , Yoichi Seki , Hiroshi Yamazaki
发明人： Masuo Ogihara , Hajime Oda , Yoichi Seki , Hiroshi Yamazaki
摘要： In a program shutter including a forwardly/reversely rotatable step motor for opening and closing a shutter blade to effect automatic exposure, a drive pulse number and an interpolation quantity are set in first and second counters. A step drive pulse is generated by the first counter to start opening the sectors. After a final pulse is generated, the second counter is started, and at the timing when the time corresponding to the interpolation quantity is elapsed, the step motor is reversely rotated thereby to fractionate a gap between steps and obtain a proper exposure quantity.
摘要翻译： 在包括用于打开和关闭快门叶片以实现自动曝光的向前/反向可旋转的步进电机的程序快门中，在第一和第二计数器中设置驱动脉冲数和内插量。 由第一计数器产生阶跃驱动脉冲以开始扇区。 在产生最终脉冲之后，开始第二计数器，并且在经过与内插量相对应的时间的定时，步进电机反向旋转，从而分离步骤之间的间隙并获得适当的曝光量。
-
公开(公告)号：US4771309A
公开(公告)日：1988-09-13
申请号：US707744
申请日：1985-03-04
申请人： Masuo Ogihara , Hajime Oda , Yoichi Seki , Hiroshi Yamazaki
发明人： Masuo Ogihara , Hajime Oda , Yoichi Seki , Hiroshi Yamazaki
CPC分类号： G03B7/16
摘要： A strobo control circuit for a program shutter which opens or closes sectors by means of a stepping motor, wherein a data ROM (read-only memory) is accessed in accordance with a value obtained by computing a code representative of a distance to a subject, a film speed and so forth, and after the data stored in the ROM is set in a timer circuit, the timer is started synchronously with start of the stepping motor to produce a strobo trigger signal upon termination of the timer action.
摘要翻译： 一种用于通过步进电机打开或关闭扇区的程序快门的频闪控制电路，其中根据通过计算代表到被摄体的距离的代码获得的值来访问数据ROM（只读存储器） 胶片速度等等，并且在存储在ROM中的数据被设置在定时器电路中之后，定时器与步进电机的启动同步地启动，以在定时器动作结束时产生频闪触发信号。
-
公开(公告)号：US5291237A
公开(公告)日：1994-03-01
申请号：US874285
申请日：1992-04-24
申请人： Shigeru Tagami , Tomihiko Aoyama , Teruyo Hayakawa , Hiroshi Yamazaki , Yuji Nakajima , Seiichi Imano
发明人： Shigeru Tagami , Tomihiko Aoyama , Teruyo Hayakawa , Hiroshi Yamazaki , Yuji Nakajima , Seiichi Imano
摘要： A camera has a shutter which may also constitute a diaphragm. In a multi-flash mode the shutter selectively has a maximum aperture at an onset or at the end of the time base. The flash occurs in synchronism with a shutter waveform shaped by this aperture area and a time base element. In a second embodiment, a second diaphragm setting circuit is provided, in diaphragm priority photography, for computing a measurement value of a distance to a subject and a second diaphragm value from the guide number during an emission of flashed light. The diaphragm is set to the computed second diaphragm value, ad an electronic flash is energized with a desired aperture area. The diaphragm is set to an initial value to effect the photography at a time other than during the emission of flashed light. A timing circuit may be provided for setting the diaphragm to the second diaphragm value. The aperture area may be increased or decreased for diaphragm matching with the quantity of flashed light and the distance to the subject during diaphragm priority flash photography.
摘要翻译： 相机具有也可以构成隔膜的快门。 在多闪光模式中，快门在时基的开始或结束时选择性地具有最大光圈。 闪光与由该开口区域和时基元件形成的快门波形同步地发生。 在第二实施例中，在隔膜优先摄影中设置第二隔膜设置电路，用于在闪光灯发射期间计算距离被摄体的距离的测量值和来自引导号的第二光阑值。 光阑被设定为计算出的第二光阑值，电子闪光灯被所需的光圈区域通电。 隔膜被设置为初始值，以在除了发光之前的时间进行摄影。 可以提供定时电路用于将隔膜设置到第二隔膜值。 在光圈优先闪光摄影期间，可以增加或减少光圈匹配与闪光量和被摄体距离的光圈面积。
-
-
-
-
-
-
-
-
-
搜索结果
451 条记录 (耗时 0.033 秒)
