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1.发明授权
公开(公告)号：US4122467A
公开(公告)日：1978-10-24
申请号：US739097
申请日：1976-11-05
申请人： Tokuichi Tsunekawa , Zenzo Nakamura , Shohei Ohtaki , Nobuaki Sakurada , Masayuki Suzuki , Takashi Uchiyama
发明人： Tokuichi Tsunekawa , Zenzo Nakamura , Shohei Ohtaki , Nobuaki Sakurada , Masayuki Suzuki , Takashi Uchiyama
摘要： The present invention relates to a shutter time control circuit of the type in which the shutter time is changed over into a predetermined value for flash light photography in response to a flash charge completion signal from the flash light device. In order to eliminate the shortcoming of the conventional shutter time control circuit of this type, in that when the shutter time is changed over into the value predetermined for flash light photography predetermined shutter time is memorized in a memory capacitor for controlling the shutter time in accordance with the value memorized after the charge completion signal has disappeared.
摘要翻译： 本发明涉及一种快门时间控制电路，其中响应于来自闪光灯装置的闪光充电完成信号，快门时间被切换到用于闪光灯拍摄的预定值。 为了消除这种类型的常规快门时间控制电路的缺点，因为当快门时间改变为对于闪光灯拍摄预定的值时，预定的快门时间被存储在用于根据控制快门时间的存储电容器中 在充电完成信号消失后存储的值。
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公开(公告)号：US4464609A
公开(公告)日：1984-08-07
申请号：US551491
申请日：1983-11-14
申请人： Zenzo Nakamura , Takashi Uchiyama , Shohei Ohtaki , Tokuichi Tsunekawa , Masanori Uchidoi , Yukio Mashimo
发明人： Zenzo Nakamura , Takashi Uchiyama , Shohei Ohtaki , Tokuichi Tsunekawa , Masanori Uchidoi , Yukio Mashimo
CPC分类号： H05B41/325
摘要： A voltage detecting means is provided in a flash lamp firing circuit for detecting the attainment of the voltage of a storage capacitor to a satisfactory lamp firing voltage level to assure that a photographic camera associated with the flash lighting unit operates in a flash exposure range switched from a daylight exposure range only when a sufficient voltage is available to fire the lamp at the time of striking of the lamp. In one embodiment, the detecting means comprises two transistorized circuits having output terminals one of which is connected to the gate lead of a SCR in a discharge circuit of the lamp, and another output terminal which is arranged to be connectable to a light-emitting diode of the camera and therefrom connected to the gate lead of an electronic change-over switch for selection of the operating ranges of the camera, the light-emitting diode being arranged to be visible from the outside of the camera so that the operator is immediately aware if the storage capacitor voltage has attained the satisfactory firing level.
摘要翻译： 电压检测装置设置在闪光灯点火电路中，用于检测存储电容器的电压达到满意的灯点火电压电平，以确保与闪光照明单元相关联的照相机在从 日光曝光范围仅在足够的电压可用于在点亮灯时点亮灯。 在一个实施例中，检测装置包括两个晶体管电路，其具有输出端子，其一个连接到灯的放电电路中的SCR的栅极引线，另一个输出端子被布置成可连接到发光二极管 并且由此连接到用于选择相机的操作范围的电子转换开关的栅极引线，所述发光二极管被布置为从相机的外部可见，使得操作者立即知道 如果存储电容器电压达到令人满意的放电电平。
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公开(公告)号：US4238149A
公开(公告)日：1980-12-09
申请号：US928791
申请日：1978-07-28
申请人： Takashi Uchiyama , Shohei Ohtaki , Zenzo Nakamura , Tokuichi Tsunekawa , Tadashi Ito , Hiroshi Aizawa
发明人： Takashi Uchiyama , Shohei Ohtaki , Zenzo Nakamura , Tokuichi Tsunekawa , Tadashi Ito , Hiroshi Aizawa
CPC分类号： G03B7/16
摘要： A shutter control circuit which normally responds to ambient light switches automatically to a flash mode in response to a charge signal from a flash unit. The light flash eliminates the charge signal. To prevent the absence of a charge signal from returning the shutter to daylight control, a shutter closing signal is generated before a flash synchronizing contact is closed and hence before the charge signal ends. However shutter closing action is then started only after a delay that provides time for the flash to occur when the shutter is fully open.
摘要翻译： 响应于来自闪光单元的充电信号，通常响应环境光的快门控制电路自动切换到闪光模式。 闪光灯消除了充电信号。 为了防止没有充电信号使快门返回到日光控制，在闪光同步触点闭合之前并且因此在充电信号结束之前产生快门关闭信号。 然而，只有在快门完全打开时，闪光灯提供时间的延迟之后才开始快门关闭动作。
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公开(公告)号：US4127325A
公开(公告)日：1978-11-28
申请号：US615897
申请日：1975-09-23
摘要： A self-adjusting electronic flash is attached to an interchangeable lens camera having a shutter-priority exposure control. For flash operation, aperture information suitable for electronic flash and the film sensitivity is automatically conveyed to the camera's diaphragm control. Thus the aperture can be automatically adjusted for flash as well as daylight operation.
摘要翻译： 自调整电子闪光灯附接到具有快门优先曝光控制的可互换镜头相机。 对于闪光灯操作，适用于电子闪光灯的光圈信息和胶片感光度自动传送到相机的光圈控制。 因此，可以对闪光灯以及日光操作自动调整光圈。
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5.发明授权Electronic flash device with capacitor discharge cut-off before full discharge 失效电子闪光器件在充放电之前具有电容放电截止
公开(公告)号：US4012665A
公开(公告)日：1977-03-15
申请号：US613470
申请日：1975-09-15
CPC分类号： H05B41/325 , H02M3/3384
摘要： The time period necessary to charge a current-to-light convertible energy storing capacitor to a certain voltage is reduced as compared with prior art devices. The energy storing capacitor is connected across a flash tube and switching element series-connected with each other. The switching element is provided with a control circuit, responsive to the voltage of the storage capacitor decreasing to a level at which the flash tube is stopped from producing flash light, for producing a terminating signal by which the switching element is brought into the open or non conducting state. With this arrangement, it is made possible to prevent complete discharge of the electric charge stored in the storage capacitor from occurring, thereby providing the advantage of saving a good fraction of the charging time period which would be otherwise necessary when the storage capacitor is completely discharged to zero voltage.
摘要翻译： 与现有技术的装置相比，将电流对光可转换储能电容器充电到一定电压所需的时间段减少。 储能电容器跨越闪光管和彼此串联连接的开关元件连接。 开关元件设置有控制电路，响应于存储电容器的电压降低到闪光管停止的水平而不产生闪光，用于产生终止信号，通过该终止信号使开关元件进入开路或 非导电状态。 通过这种布置，可以防止存储在存储电容器中的电荷的完全放电发生，从而提供了当存储电容器完全放电时否则需要的充电时间段的很大一部分的优点， 到零电压。
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公开(公告)号：US4230402A
公开(公告)日：1980-10-28
申请号：US883298
申请日：1978-03-03
申请人： Takashi Uchiyama , Zenzo Nakamura , Shohei Ohtaki
发明人： Takashi Uchiyama , Zenzo Nakamura , Shohei Ohtaki
CPC分类号： G03B15/05 , G03B7/16 , G03B2215/05
摘要： The present invention relates to a device for flash light photography and, more particularly, to a device for flash light photography for adjustable light stroboscope. A major feature of the present invention is that the adjustable light condition of the stroboscope is rendered to be adjusted, based on the film speed and diaphragm value, independently of each other. Thus, when the film speed is made high, the responsive distance for light adjustment is elongated.
摘要翻译： 本发明涉及一种用于闪光灯摄影的装置，更具体地说，涉及一种用于可调光闪光灯的闪光灯拍摄装置。 本发明的主要特征在于，可以基于胶片速度和光阑值彼此独立地调节频闪仪的可调光条件。 因此，当胶片速度变高时，光调节的响应距离变长。
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公开(公告)号：US4007398A
公开(公告)日：1977-02-08
申请号：US604954
申请日：1975-08-15
申请人： Zenzo Nakamura , Shohei Ohtaki , Takashi Uchiyama , Hideo Yokota
发明人： Zenzo Nakamura , Shohei Ohtaki , Takashi Uchiyama , Hideo Yokota
CPC分类号： H05B41/325
摘要： A device for automatic control of the quantity of light from an electronic flash tube including a silicon controlled rectifier connected in series with the flash tube, a circuit for applying a reverse voltage between the main electrodes of said silicon controlled rectifier so as to open said rectifier, and a switching element connected between said reverse voltage applying circuit and said silicon controlled rectifier. Responsive to the output signal from the reverse voltage applying circuit, the switching element short-circuits the gate electrode and cathode of the rectifier. With this arrangement, it is possible to decrease the capacity of a commutation capacitor constituting part of the reverse voltage applying circuit.
摘要翻译： 一种用于自动控制来自包括与闪光管串联连接的可控硅整流器的电子闪光管的光量的装置，用于在所述可控硅整流器的主电极之间施加反向电压的电路，以便打开所述整流器 以及连接在所述反向电压施加电路和所述可控硅整流器之间的开关元件。 响应于来自反向电压施加电路的输出信号，开关元件使整流器的栅电极和阴极短路。 通过这种布置，可以降低构成反向电压施加电路的一部分的换向电容器的容量。
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公开(公告)号：US4159168A
公开(公告)日：1979-06-26
申请号：US855480
申请日：1977-11-29
申请人： Akiyasu Sumi , Tokuichi Tsunekawa , Shohei Ohtaki
发明人： Akiyasu Sumi , Tokuichi Tsunekawa , Shohei Ohtaki
CPC分类号： G03B7/003 , G03B7/0807
摘要： An exposure correction factor setting device is disclosed which includes an exposure correction factor setting dial, a brush connected to the dial and arranged to be operated when the film speed is manually adjusted, and a bias device connected to a variable resistor for manual adjustment of the film speed so as to apply to a film speed signal producing device for automatic adjustment of film speed a bias signal corresponding to the exposure correction factor set by the dial. It is thereby possible to utilize the exposure correction factor setting device in automatically setting a film speed by a film cassette as well as in manually setting the film speed.
摘要翻译： 公开了一种曝光校正因子设定装置，其包括曝光校正系数设定刻度盘，连接到刻度盘并布置为在手动调节胶片速度时操作的刷子，以及连接到可变电阻器的偏置装置，用于手动调节 胶片速度，以便适用于胶片速度信号产生装置，用于自动调节胶卷速度，该偏移信号对应于由表盘设置的曝光校正因子。 因此，可以利用曝光校正系数设定装置，通过胶片暗盒自动设定胶片速度，以及手动设定胶卷速度。
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公开(公告)号：US4382666A
公开(公告)日：1983-05-10
申请号：US206084
申请日：1980-11-12
申请人： Shohei Ohtaki , Zenzo Nakamura , Naoki Nagase
发明人： Shohei Ohtaki , Zenzo Nakamura , Naoki Nagase
CPC分类号： G03B15/05 , G03B2215/0514 , G03B2215/056
摘要： An indicating device of computer type electronic flash apparatus has a plurality of display members representing respective limited distance ranges for correct exposure of an object to be photographed. Each of the display members corresponds to a respective set diaphragm value. The indicating device further includes a plurality of indicating marks provided on the same plane of said display members and corresponding to respective set diaphragm values. With this device, it is possible to be aware of the proper distance range satisfactorily.
摘要翻译： 计算机式电子闪光装置的指示装置具有多个显示部件，其表示用于正确曝光被拍摄物体的相应的有限距离范围。 每个显示构件对应于相应的设定光阑值。 指示装置还包括设置在所述显示构件的同一平面上并对应于各个设定的光阑值的多个指示标记。 使用该装置，可以令人满意地注意适当的距离范围。
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公开(公告)号：US4068245A
公开(公告)日：1978-01-10
申请号：US498618
申请日：1974-08-19
申请人： Shohei Ohtaki , Zenzo Nakamura , Susumu Kozuki
发明人： Shohei Ohtaki , Zenzo Nakamura , Susumu Kozuki
摘要： A flash exposure control system comprising a flash lighting unit, a battery circuit connected to said flash lighting unit to energize said flash lighting unit during an exposure, a switching arrangement connected to said flash lighting unit to control the termination of energization of said flash lighting unit, a timer for controlling the conduction of said switching arrangement, the timer having an adjustable circuit for adjusting the duration of conducting time as a function of the camera-to-object distance and the adjustable circuit being responsive to the camera focus adjustment, and an aperture adjusting unit responsive to the focus adjustment for defining an exposure aperture.
摘要翻译： 一种闪光曝光控制系统，包括闪光照明单元，连接到所述闪光灯照明单元的电池电路，用于在曝光期间激励所述闪光灯照明单元，连接到所述闪光灯照明单元的开关装置，以控制所述闪光照明单元的通电的终止 用于控制所述切换装置的导通的定时器，所述定时器具有可调节电路，用于根据所述相机对物体距离调整导通时间的持续时间，并且所述可调节电路响应于所述照相机焦点调节，以及 孔径调节单元响应于用于限定曝光孔径的焦点调节。
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