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91. 发明授权

US4811044A Shutter actuating device 失效
标题翻译：快门启动装置
公开(公告)号：US4811044A
公开(公告)日：1989-03-07
申请号：US207930
申请日：1988-06-16
申请人： Yoshihiro Tanaka , Sadafusa Tsuji , Hiroshi Ootsuka
发明人： Yoshihiro Tanaka , Sadafusa Tsuji , Hiroshi Ootsuka
IPC分类号： G03B7/08 , G03B7/083 , G03B7/26 , G03B9/14
CPC分类号： G03B9/14 , G03B7/0807 , G03B7/083 , G03B7/26
摘要： A shutter actuating device of the type employing a piezoelectric element as an actuating element which attains stabilization of the shutter opening speed of a shutter device. The device includes a piezoelectric element charging circuit which charges a piezoelectric element with constant current so that the rising speed of the charged voltage of the piezoelectric element may be maintained constant. Means is also disclosed for minimizing a time lag until a minimum aperture for exposure is reached after triggering of a shutter release operation. Higher constant charging current is supplied to the piezoelectric element until a time just before the minimum aperture for exposure is presented, and after then the piezoelectric element is charged with lower constant current.
摘要翻译：一种使用压电元件作为致动元件的快门致动装置，其实现快门装置的快门打开速度的稳定。该装置包括一个压电元件充电电路，其对恒定电流的压电元件进行充电，使压电元件的充电电压的上升速度保持恒定。还公开了用于在触发快门释放操作之后到达最小曝光孔径之前使时间滞后最小化的装置。更高的恒定充电电流被提供给压电元件，直到呈现最小曝光孔径之前的时间，然后在较低的恒定电流下对压电元件充电。

92. 发明授权

US4711546A Photometric circuit 失效
标题翻译：光度电路
公开(公告)号：US4711546A
公开(公告)日：1987-12-08
申请号：US894384
申请日：1986-08-07
申请人： Tadashi Okino
发明人： Tadashi Okino
IPC分类号： G03B7/083 , G03B7/16 , G03B7/08
CPC分类号： G03B7/16 , G03B7/083
摘要： A photometric circuit which has an operational amplifier and produces a result of light measurement with a logarithmic compression element arranged between the input and output terminals of the operational amplifier to logarithmically compress a signal obtained by photo-electric transducing a measured light is characterized by inclusion of a circuit which selectively switches the logarithmic compression element to short-circuit the input and output terminals of the amplifier between them. The photometric circuit includes a capacitor to be charged with a photo current; a switching circuit for discharging the electric charge of the capacitor; an amplifying circuit for amplifying the voltage of the capacitor; a computing circuit for performing a computing operation on the amplifying circuit and a reference value; a setting circuit for setting the reference value according to the output of the amplifying circuit produced while the electric charge of the capacitor is being discharged by the switching circuit. The photometric circuit is capable of accurately performing light measurement by virtue of these features.
摘要翻译：一种测光电路，其具有运算放大器并且通过布置在运算放大器的输入和输出端之间的对数压缩单元产生光测量结果，以对数压缩通过光电转换测量光获得的信号，其特征在于包括选择性地切换对数压缩元件以使放大器的输入和输出端子在它们之间短路的电路。测光电路包括用光电流充电的电容器; 用于对电容器的电荷进行放电的开关电路; 放大电路，用于放大电容器的电压; 用于对放大电路执行计算操作的计算电路和参考值; 设置电路，用于根据由开关电路将电容器的电荷放电而产生的放大电路的输出设定基准值。该测光电路能够通过这些特征精确地执行光测量。

93. 发明授权

US4710014A Control circuit for a programming shutter 失效
标题翻译：编程快门控制电路
公开(公告)号：US4710014A
公开(公告)日：1987-12-01
申请号：US943941
申请日：1986-12-09
申请人： Takanori Kohno
发明人： Takanori Kohno
IPC分类号： G03B7/087 , G03B7/083 , G03B7/08
CPC分类号： G03B7/083
摘要： A control circuit for a programming shutter includes a light receiving element which is always exposed to light from a subject to be photographed and a logarithmic compression device which logarithmically compresses a photocurrent flowing through the light receiving element in accordance with the brightness of the subject. An output voltage of the logarithmic compression device is logarithmically expanded by a logarithmic expansion device and a logarithmically expanded current from the expansion device controls currents flowing through a plurality of weighted current sources. The currents flowing through the plurality of weighted current sources are added to or subtracted from a charged current to a condenser for integrating the brightness of the subject through a plurality of current switches corresponding to the current sources. On the other hand, shutter blades having the function of the diaphragm are opened in accordance with a predetermined opening characteristic in interlocked relationship with the shutter release operation and a counter is operated in interlocked relationship with the opening operation of the shutter blades. A count of the counter controls operation pattern of the current switches so that the charged current to the integrating condenser is conformed to the opening characteristic of the shutter blades. Further, a bias voltage for the logarithmic compression device is proportionated to an absolute temperature and is established to correspond to the film speed so that the parameter proportional to the absolute temperature is eliminated from the output current of the logarithmic expansion device.
摘要翻译：用于编程快门的控制电路包括总是暴露于要拍摄的被摄体的光的光接收元件和对数压缩装置，其对数压缩根据被摄体的亮度流过光接收元件的光电流。对数压缩装置的输出电压由对数扩展装置对数扩展，并且来自扩展装置的对数扩大电流控制流过多个加权电流源的电流。流过多个加权电流源的电流被加到或从充电电流中减去到电容器，用于通过对应于电流源的多个电流开关对对象的亮度进行积分。另一方面，具有隔膜功能的快门叶片根据与快门释放操作的互锁关系的预定打开特性打开，并且计数器与快门叶片的打开操作互锁的关系操作。计数器的计数控制电流开关的操作模式，使得到积分电容器的充电电流符合快门叶片的打开特性。此外，对数压缩装置的偏置电压与绝对温度成比例，并且被建立为对应于膜速度，使得与绝对温度成比例的参数从对数膨胀装置的输出电流中消除。

94. 发明授权

US4544257A Automatic exposure control for a camera shutter 失效
标题翻译：相机快门的自动曝光控制
公开(公告)号：US4544257A
公开(公告)日：1985-10-01
申请号：US597768
申请日：1984-04-06
申请人： Hideo Taka , Bernhard H. Andresen
发明人： Hideo Taka , Bernhard H. Andresen
IPC分类号： G03B7/083 , H03K17/28
CPC分类号： G03B7/083
摘要： The specification discloses an automatic shutter timing control for a camera. A voltage supply is applied to a capacitor (38). An electronic switch such as a PMOS gate (44) has conductive and non-conductive states and is connected across the capacitor (38). A pair of transistors (32) and (40) are interconnected in a current mirror configuration and are connected between the voltage supply and the capacitor (38) and are operable in conjunction with a charging resistor (30) such that the capacitor (38) may be charged to a predetermined voltage when the PMOS device (44) is in a non-conductive state. A transistor (54) is operable to receive an electrical control signal in order to sink current from the charging resistor (30) and to prevent current flow through the PMOS device (44). A comparator (42) is responsive to a predetermined voltage on the capacitor (38) to control the camera shutter.
摘要翻译：本说明书公开了一种用于相机的自动快门定时控制。电压供应给电容器（38）。诸如PMOS栅极（44）的电子开关具有导电和非导通状态并且跨过电容器38连接。一对晶体管（32）和（40）以电流镜配置互连，并连接在电压源和电容器（38）之间，并可与充电电阻（30）结合使用，使得电容器（38）当PMOS器件（44）处于非导通状态时，可以将其充电到预定电压。晶体管（54）可操作以接收电控制信号，以便从充电电阻（30）吸收电流并且防止电流流过PMOS器件（44）。比较器（42）响应电容器（38）上的预定电压来控制相机快门。

95. 发明授权

US4428655A Mode selector device for a camera 失效
标题翻译：相机模式选择器
公开(公告)号：US4428655A
公开(公告)日：1984-01-31
申请号：US301535
申请日：1981-09-14
申请人： Nobuyuki Suzuki , Masami Shimizu
发明人： Nobuyuki Suzuki , Masami Shimizu
IPC分类号： G03B7/083 , G03B7/08
CPC分类号： G03B7/083
摘要： The mode selector device disclosed switches between a manual shutter time setting mode and an automatic shutter time setting mode, or between an electrically controlled shutter closing operation and a mechanically controlled shutter closing operation, by detecting the setting of a shutter time setting member to produce a signal level which controls a switching circuit to switch between the modes.
摘要翻译：所公开的模式选择装置通过检测快门时间设定部件的设定来切换手动快门时间设定模式和自动快门时间设定模式，或电动快门关闭动作和机械控制的快门关闭动作之间，信号电平控制开关电路在模式之间切换。

96. 发明授权

US4426142A Camera employing a flash illumination device and a flash photographing system 失效
标题翻译：相机采用闪光照明装置和闪光拍摄系统
公开(公告)号：US4426142A
公开(公告)日：1984-01-17
申请号：US316516
申请日：1981-10-29
申请人： Yukio Iura , Masayoshi Yamamichi , Takashi Uchiyama , Tetsuya Taguchi , Yukio Mashimo
发明人： Yukio Iura , Masayoshi Yamamichi , Takashi Uchiyama , Tetsuya Taguchi , Yukio Mashimo
IPC分类号： G03B7/083 , G03B7/16 , G03B7/085 , G03B15/05
CPC分类号： G03B7/083 , G03B7/16
摘要： A flash illumination device is removably mounted on the body of an accompanying camera. Electric adjusting means set the diaphragm of the camera. A signal system produces a signal corresponding to a prescribed diaphragm setting and transfers the signal through a shoe attached to the camera body or through other electric connecting means. When the flash illumination device is connected to the camera body, the signal system provides an electrical signal which causes the adjusting means automatically to set the diaphragm.
摘要翻译：闪光照明装置可拆卸地安装在相机的主体上。电动调节装置设置相机的隔膜。信号系统产生对应于规定的隔膜设置的信号，并通过附接到照相机主体的鞋或通过其它电连接装置传送信号。当闪光照明装置连接到相机机身时，信号系统提供电信号，使得调节装置自动地设置光圈。

97. 发明授权

US4425033A Camera employing a flash illumination device and a flash photographing system 失效
标题翻译：相机采用闪光照明装置和闪光拍摄系统
公开(公告)号：US4425033A
公开(公告)日：1984-01-10
申请号：US396429
申请日：1982-07-08
申请人： Yukio Iura , Masayoshi Yamamichi , Takashi Uchiyama , Tetsuya Taguchi , Yukio Mashino
发明人： Yukio Iura , Masayoshi Yamamichi , Takashi Uchiyama , Tetsuya Taguchi , Yukio Mashino
IPC分类号： G03B7/083 , G03B7/16 , G03B7/085 , G03B15/05
CPC分类号： G03B7/083 , G03B7/16
摘要： An interchangeable-lens camera is usable with a flash unit which stops the flash on the basis of the object distance and transmits a signal corresponding to a required aperture value. The camera includes a diaphragm control that responds to the light passing through the maximum aperture of the interchangeable lens and corrects for a particular maximum aperture. A selector causes the diaphragm control to respond either to the light or the signal transmitted by the flash and a switch aborts the maximum aperture connection during flash photography.
摘要翻译：可互换镜头相机可用于闪光单元，其基于物体距离停止闪光，并发射对应于所需光圈值的信号。照相机包括一个光圈控制器，该光圈控制器响应通过可互换镜头的最大光圈的光线并校正特定的最大光圈。选择器使得光圈控制对闪光灯发出的光或信号作出反应，并且在闪光摄影期间开关中止最大光圈连接。

98. 发明授权

US4422742A Photographing mode switching device for a camera 失效
标题翻译：相机拍摄模式切换装置
公开(公告)号：US4422742A
公开(公告)日：1983-12-27
申请号：US375740
申请日：1982-05-07
申请人： Fujio Enomoto
发明人： Fujio Enomoto
IPC分类号： G03B7/16 , G03B7/17 , G03B15/03 , G03B15/05 , G03B7/083
CPC分类号： G03B15/05 , G03B2215/0514 , G03B2215/056
摘要： A photographing mode switching device for a camera includes a position detecting member associated with a mode switching member and a mounting detecting member which detects the mounting of an electronic flash on the camera. A flash photographing mode is established only when the both detecting members indicate that the mode switching member has been displaced to a position where a flash photography is enabled and that the electronic flash has been mounted on the camera.
摘要翻译：用于照相机的拍摄模式切换装置包括与模式切换部件相关联的位置检测部件和检测电子闪光灯在相机上的安装的安装检测部件。仅当两个检测构件指示模式切换构件已经移动到启用闪光摄影的位置并且电子闪光灯已经安装在相机上时才建立闪光拍摄模式。

99. 发明授权

US4402587A Photometric mode switching apparatus for cameras of automatic exposure control type 失效
标题翻译：用于自动曝光控制型摄像机的光度模式切换装置
公开(公告)号：US4402587A
公开(公告)日：1983-09-06
申请号：US303131
申请日：1981-09-15
申请人： Masafumi Yamasaki
发明人： Masafumi Yamasaki
IPC分类号： G03B7/089 , G03B7/083 , G03B7/28 , G03B7/08
CPC分类号： G03B7/083
摘要： A photometric mode switching apparatus for a camera of the automatic exposure control type includes a first switch which is used to select a particular photometric mode, and a second switch which is interlocked with a storage switch contained in a spotwise photometry circuit. Unless the two switches are operated to establish a spotwise photometric mode, the camera is caused to operate in the average photometric mode.
摘要翻译：一种用于自动曝光控制型摄像机的测光模式切换装置包括用于选择特定光度测量模式的第一开关和与包含在点式测光电路中的存储开关互锁的第二开关。除非两个开关被操作以建立一个明亮的测光模式，否则使相机在平均光度模式下工作。

100. 发明授权

US4400087A Light measuring circuit 失效
标题翻译：光测电路
公开(公告)号：US4400087A
公开(公告)日：1983-08-23
申请号：US262895
申请日：1981-05-12
申请人： Yasuo Nakayama
发明人： Yasuo Nakayama
IPC分类号： G03B7/081 , G01J1/46 , G03B7/083 , G03B15/05 , H05B41/32 , H05B41/14
CPC分类号： H05B41/325 , G01J1/46
摘要： A light measuring element which is provided with a pulse signal generator for generating pulse signals the duty ratio of which varies in accordance with a coefficient related to the exposure for photographing, a switching element which is driven by the output pulse signals from the pulse signal generator, and a light integrating circuit which includes a photo detector and an integrating capacitor and provides the voltage across the integrating capacitor as a light measure output. The light integrating circuit performs an intermittent light integrating operation by the action of the switching element. The integration period of the light integrating circuit is varied by varying the duty ratio of drive signals to the switching element which are supplied from a pulse signal generator, which duty ratio varies with a coefficient related to the proper exposure for photographing.
摘要翻译：一种光测量元件，其设置有用于产生脉冲信号的脉冲信号，所述脉冲信号的占空比根据与用于拍摄的曝光有关的系数而变化;开关元件，其由来自脉冲信号发生器的输出脉冲信号驱动以及包含光检测器和积分电容器的光积分电路，并且将积分电容器两端的电压提供为光测量输出。光积分电路通过开关元件的动作进行间歇光积分动作。通过改变从脉冲信号发生器提供的对开关元件的驱动信号的占空比来改变光积分电路的积分周期，该占空比随与用于拍摄的适当曝光相关的系数而变化。

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