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    • 51. 发明授权
    • Camera provided with a device for generating a signal representative of
the finished state of the exposure
    • 相机配备有用于产生表示曝光完成状态的信号的装置
    • US4472043A
    • 1984-09-18
    • US403334
    • 1982-07-30
    • Ryoichi Suzuki
    • Ryoichi Suzuki
    • G03B7/00G03B7/081G03B9/08G03B17/18G03B19/00G03B7/099
    • G03B7/081
    • An electromagnetically driven diaphragm shutter having the shutter blade serving at the same time as the diaphragm, uses a quasi-TTL actual aperture light measuring system for measuring the incident light by providing the light measuring element at the auxiliary opening (auxiliary aperture) whose opening amount varies in proportion to that of the principal opening. The auxiliary opening is variable with the opening of the shutter blades. Structure is provided for generating and holding a signal representative of the finished state of an exposure, which is adapted to detect the output variation of the light measuring element at the auxiliary aperture when the shutter is closed and then to supply certainly the signal to enable subsequent action such as start of motorized film winding.
    • 具有与隔膜同时起作用的快门叶片的电磁驱动光圈闸门使用准TTL实际孔径光测量系统,用于通过在辅助开口(辅助孔径)处设置光量测元件来测量入射光,其开口量 与主要开放的比例不同。 辅助开口随着快门叶片的开口而变化。 提供了用于产生和保持代表完成的曝光状态的信号的结构,其适于在快门关闭时检测辅助孔径处的光测量元件的输出变化,然后肯定地提供信号以使能后续 诸如启动电动卷绕的动作。
    • 52. 发明授权
    • Control circuit for an electromagnetically driven programming shutter
    • 用于电磁编程快门的控制电路
    • US4462672A
    • 1984-07-31
    • US469508
    • 1983-02-24
    • Tomio KurosuYukio Yoshikawa
    • Tomio KurosuYukio Yoshikawa
    • G03B7/081G03B7/087G03B7/097
    • G03B7/083
    • The electromagnetically driven programming shutter includes magnets and shutter blade driving coils provided on the respective shutter blades of the shutter and electromagnetically cooperating with the magnets and the shutter blades are actuated for opening and/or closing operation when the driving coils are energized. The present invention provides a votage compensating circuit used as the reference voltage generating circuit which is capable of varying the reference output voltage as a function of the variation in the voltage of the electric source, thereby permitting the controlled proper exposure defining output pulse to be modified so as to compensate for the variation in the actuation of the shutter blades caused by the variation in the electromagnetic force generated by the shutter blade driving coils due to the variation in the voltage of the electric source. Alternatively, a temperature detecting circuit may be provided for detecting the temperature of the shutter blade driving coils indicative of the variation in the current flowing through the driving coils and, hence, indicative of the variation in the electromagnetic force given to the shutter blades, and the temperature detecting circuit is connected to the reference voltage generating circuit. The temperature detecting circuit has such a temperature characteristics that the reference output voltage is modified by the temperature detecting circuit in response to the variation in the temperature thereby permitting the variation in the actuation of the shutter blades caused by the variation in the temperature to be compensate for in order to obtain a proper exposure of the shutter.
    • 电磁驱动编程快门包括设置在快门的相应快门叶片上的磁体和快门叶片驱动线圈,并与磁体电磁配合,并且当驱动线圈通电时,快门叶片被致动以打开和/或关闭操作。 本发明提供一种补偿电路,其用作参考电压产生电路,其能够改变作为电源电压变化的函数的参考输出电压,从而允许限制输出脉冲的受控适当曝光被修改 以便补偿由于电源的电压变化而由快门叶片驱动线圈产生的电磁力的变化而导致的快门叶片的致动变化。 或者,可以设置温度检测电路,用于检测快门叶片驱动线圈的温度,其指示流过驱动线圈的电流的变化,并且因此指示给予快门叶片的电磁力的变化,以及 温度检测电路连接到基准电压发生电路。 温度检测电路具有温度特性,使温度检测电路响应于温度的变化而改变参考输出电压,从而允许由温度变化引起的快门叶片的致动变化被补偿 以便获得快门的适当曝光。
    • 54. 发明授权
    • Camera with exposure measuring system
    • 相机带曝光测量系统
    • US4391500A
    • 1983-07-05
    • US323428
    • 1981-11-20
    • Tokuichi Tsunekawa
    • Tokuichi Tsunekawa
    • G03B7/081G03B7/091G03B17/20
    • G03B7/081G03B7/091
    • A single lens reflex camera having at least first and second light measuring circuits of different light measuring distribution for producing outputs representative of logarithmically compressed information which is a function of the brightness of a scene to be photographed, and a computer for computing the outputs of the first and second measuring circuits. A measuring sensitivity pattern selector is provided outside the camera housing. Upon adjustment of the mixture ratio of the light values, the computer is caused to produce a first output, and the outputs of the first and second light measuring circuits are computed by the aforesaid computer based on a predetermined relationship to produce a second output. When the difference between the first and second computer output falls within a certain range of values, exposure is controlled by the first computer output, and when the output falls out of the certain range of values by the second computer output.
    • 一种单透镜反光相机具有至少具有不同光测量分布的第一和第二光测量电路,用于产生表示对数压缩信息的输出,该对数压缩信息是要被拍摄的场景的亮度的函数;以及计算机, 第一和第二测量电路。 在相机外壳外部提供测量灵敏度图案选择器。 在调整光值的混合比时,使计算机产生第一输出,并且基于预定关系由上述计算机计算第一和第二光测量电路的输出,以产生第二输出。 当第一和第二计算机输出之间的差异落在一定值范围内时,曝光由第一计算机输出控制,并且当输出通过第二计算机输出落在特定值范围之外时。
    • 57. 发明授权
    • Programed exposure control device
    • 编程曝光控制装置
    • US4324467A
    • 1982-04-13
    • US216664
    • 1980-12-15
    • Kazuo Shiozawa
    • Kazuo Shiozawa
    • G03B7/081G03B7/097
    • G03B7/083G03B2217/005
    • A programed exposure control device for changeable lens type camera of the type in which the object brightness information is corrected in accordance with other exposure informations including the open F value and the corrected brightness information is ranked to permit the determination of the aperture value in accordance with the rank in a stepped manner and the determination of the shutter speed in accordance with the rank and the brightness information. Said device is further including at least one comparison circuit to compare whether the open F value is greater than the smallest aperture value corresponding to the rank or not. Said device is so constructed as to provide, when the open F value of the lens to be used is greater than the smallest aperture value corresponding to the rank, a shutter speed signal representing a shutter time length which is longer than the shutter time length corresponding to the rank which provides the open-side aperture value closest to the open F value of the lens and to the brightness information, by a time length corresponding to a predetermined light value. The aperture is beforehand set at a constant aperture value which can substantially eliminate the influence of difference of the open F value of the lens. The aperture value for the actual photographing is determined in accordance with the TTL light measurement information at the first-mentioned aperture value, while the shutter speed is determined in accordance with the thus determined aperture value.
    • 根据包括打开的F值和校正的亮度信息的其他曝光信息对目标亮度信息进行校正的类型的可变型透镜型照相机的编程曝光控制装置进行排序,以允许根据 以阶梯方式排列,并根据等级和亮度信息确定快门速度。 所述装置还包括至少一个比较电路,以比较开启F值是否大于对应于等级的最小孔径值。 所述装置被构造成当要使用的透镜的开放F值大于对应于等级的最小孔径值时提供表示快门时间长度的快门速度信号,该快门速度信号比快门时间长度对应 达到提供最接近透镜的开放F值的开放侧孔径值与亮度信息的等级,乘以与预定光值相对应的时间长度。 预先将孔径设定在恒定的孔径值,其基本上可以消除透镜的开度F值的差异的影响。 根据上述孔径值的TTL光测量信息确定实际拍摄的光圈值,同时根据由此确定的光圈值确定快门速度。
    • 59. 发明授权
    • Method and apparatus for automatic exposure control on a photographic
camera
    • 用于照相机上的自动曝光控制的方法和装置
    • US4310229A
    • 1982-01-12
    • US094341
    • 1979-11-14
    • Rolf Magel
    • Rolf Magel
    • G03B7/085G03B7/081G03B7/087
    • G03B7/085
    • Disclosed is a method and apparatus for automated exposure control in a photographic camera having a lens equipped with an automatically adjusting diaphragm. A measuring signal is provided which is proportional to the luminance of the subject, the sensitivity of the film and the initial aperture at which the diaphragm is set. A control device is provided which stops the moving aperture at its working opening. A reference signal is provided by combining the measuring signal with a signal proportional to a shutter speed limit value. The diaphragm automatic adjustment is initiated and the variation or change in diaphragm aperture is converted to a signal which is combined with the measuring signal. This varying signal is continuously compared with the reference signal and a control signal to stop the automatic adjustment of the diaphragm is issued when the signals being compared are equal. In one embodiment of the invention, the reference signal is provided by combining the measuring signal and the shutter speed limit value in a 1-to-1 ratio. This ratio can be changed to provide either shutter speed or aperture priority if desired.
    • 公开了一种用于具有配备有自动调节膜片的透镜的照相机中的自动曝光控制的方法和装置。 提供与被摄体的亮度成比例的测量信号,胶片的灵敏度和设置隔膜的初始孔径。 提供控制装置,其在其工作开口处停止移动孔。 通过将测量信号与与快门速度限制值成比例的信号组合来提供参考信号。 光圈自动调节开始,光阑孔径的变化或变化转换为与测量信号相结合的信号。 该变化信号与参考信号连续地进行比较,并且当被比较的信号相等时,发出停止光阑的自动调节的控制信号。 在本发明的一个实施例中,通过以1比1的比率组合测量信号和快门速度限制值来提供参考信号。 如果需要,可以改变该比例以提供快门速度或光圈优先。
    • 60. 发明授权
    • Drive system for electromagnetically driven shutter
    • 驱动电磁驱动系统
    • US4264162A
    • 1981-04-28
    • US48742
    • 1979-06-15
    • Ryoichi SuzukiYukio OgawaTakao KinoshitaTakashi Uchiyama
    • Ryoichi SuzukiYukio OgawaTakao KinoshitaTakashi Uchiyama
    • G03B7/081G03B7/083G03B7/087G03B9/42
    • G03B7/083
    • In the drive system disclosed, a first power source supplies a driving current to drive a moving member of an electromagnetic shutter driving device in one direction or in the reverse direction a second power source device consisting of a DC booster circuit, a capacitor, etc.; a photo-to-electric converter circuit discerns the brightness level of an object to be photographed and controls the outputs of the first and second power source devices to shift between these two outputs. An automatic change-over supplies the output of the second power source to the electromagnetic shutter driving device when the level of the output of the photo-to-electric converter circuit is equal to or above a predetermined level and supplies the output of the first power source to the electromagnetic shutter driving device when the output level of the photo-to-electric converter circuit is lower than the predetermined level.
    • 在所公开的驱动系统中,第一电源提供驱动电流以驱动电磁快门驱动装置的移动部件沿一个方向或相反方向由包括直流升压电路,电容器等的第二电源装置。 ; 光电转换器电路识别待拍摄对象的亮度级别,并控制第一和第二电源装置的输出在这两个输出之间移动。 当光电转换器电路的输出电平等于或高于预定电平时,自动切换将第二电源的输出提供给电磁快门驱动装置,并将第一功率的输出 当光电转换器电路的输出电平低于预定电平时,向电磁快门驱动装置供电。