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21.发明授权
公开(公告)号：US4034384A
公开(公告)日：1977-07-05
申请号：US584831
申请日：1975-06-09
摘要： The present invention relates to an exposure meter circuit of a camera with a matching network for a flash device with which camera auxiliary light photography can be carried out the flash device presents a detecting output terminal of a detecting network for detecting the level of the stored energy of an energy storing means provided in the flash circuit of the flash device, a voltage supply terminal for supplying the operation voltage to the detecting network and a synchronizing terminal for triggering the flash device. With this camera, daylight photographing can also be carried out without a flash device. The exposure meter circuit is characterized in that in the exposure meter circuit a current source is included for the exposure meter. A first switching means is connected with one electrode of the current source. Grounding of the current source occurs in functional connection with the switching of the flashlight photographing over to the daylight photographing. A second switching means is connected in the exposure meter circuit and switches off the light receiving means, where in the case of the flash photographing, the voltage is given to the supply terminal from the current source for the exposure meter by means of said first switching means so as to operate the detecting network. In the case of the daylight photographing, the light receiving means is connected in the exposure meter circuit by means of the first and the second switching means so as to bring the detecting network out of operation by grounding the current source.
摘要翻译： 本发明涉及一种具有用于闪光装置的匹配网络的照相机的曝光仪表电路，可通过该闪光装置执行照相机辅助光摄影，闪光装置呈现检测网络的检测输出端，用于检测存储能量的电平 设置在闪光装置的闪光电路中的能量存储装置，用于向检测网络提供操作电压的电压供给端子和用于触发闪光装置的同步端子。 使用本相机，也可以在没有闪光灯设备的情况下进行日光照相。 曝光表电路的特征在于，在曝光计电路中，曝光计包括电流源。 第一开关装置与电流源的一个电极连接。 与将手电筒拍摄切换到日光照相的功能连接发生电流源的接地。 第二切换装置连接在曝光计量器电路中，并且关闭光接收装置，其中在闪光拍摄的情况下，通过所述第一开关从曝光计的电流源向电源端子提供电压 意味着操作检测网络。 在日光照射的情况下，光接收装置通过第一和第二切换装置连接在曝光计量器电路中，以便通过使电流源接地来使检测网络不工作。
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22.发明授权Camera in which the iris is set prior to the exposure time and adaptable to permit shutter time preselection 失效在曝光时间之前设置光圈的相机，并适应于允许快门时间预选
公开(公告)号：US3945024A
公开(公告)日：1976-03-16
申请号：US376676
申请日：1973-07-05
CPC分类号： G03B7/087
摘要： A camera in which the iris is set prior to the exposure time, particularly a camera which can be converted into a camera in which the exposure time is set prior to the iris adjustment by mounting an additional iris control device on the view finder.
摘要翻译： 其中在曝光时间之前设置光圈的相机，特别是可以转换成照相机的照相机，其中通过将附加的光圈控制装置安装在取景器上，在曝光时间设定在光圈调整之前。
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公开(公告)号：US4037234A
公开(公告)日：1977-07-19
申请号：US645356
申请日：1975-12-30
摘要： An exposure control system for a camera capable of deriving more reliable and accurate exposure values over an extended range of scene luminance despite variation of the ambient temperature of the system than was previously possible. The exposure control system is characterized by the use of a photovoltaic cell and a logarithmic converter connected thereto in combination with a voltage stabilizer for providing output current signals of which the values are independent of temperature to the automatic camera diaphragm aperture regulating mechanism. The logarithmic converter consists of an operational amplifier with a feedback diode connected between the input and the output of the operational amplifier. The voltage stabilizer connected to the operational amplifier comprises a plurality of transistors selected to have such characteristics that the temperature dependance components of the luminance versus output signal response characteristic of the photovoltaic cell and the logarithmic conversion of the converter are cancelled by the temperature dependence component of the voltage supplied from the voltage stabilizer.
摘要翻译： 一种用于相机的曝光控制系统，其能够在场景亮度的扩展范围内获得更可靠和准确的曝光值，尽管系统的环境温度变化比先前可能的变化。 曝光控制系统的特征在于使用光伏电池和连接到其上的对数转换器以及稳压器，用于提供与自动相机光圈孔调节机构的温度无关的输出电流信号。 对数转换器由运算放大器组成，反相二极管连接在运算放大器的输入和输出端之间。 连接到运算放大器的稳压器包括被选择为具有这样的特性的多个晶体管，使得光伏电池的亮度对输出信号响应特性的温度依赖性分量和转换器的对数转换由温度依赖性分量 从稳压器提供的电压。
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公开(公告)号：US3999197A
公开(公告)日：1976-12-21
申请号：US609438
申请日：1975-09-02
CPC分类号： G03B17/425 , G03B1/04
摘要： A film rewinding device for a camera using a motor for rewinding film. Upon completion of film rewinding, the device automatically stops the film rewinding operation with detecting means disposed in the device to detect the completion of film rewinding. This is done by utilizing the difference between the load on the motor during the rewinding operation and the load at the completion of the rewinding operation.
摘要翻译： 一种用于使用用于重绕胶片的电动机的相机的胶片倒带装置。 在完成胶卷倒带时，设备通过设置在设备中的检测装置自动停止胶片倒带操作，以检测胶卷倒带的完成。 这是通过利用重绕操作期间电机上的负载与完成重绕操作时的负载之间的差异来完成的。
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公开(公告)号：US3973266A
公开(公告)日：1976-08-03
申请号：US468983
申请日：1974-05-10
CPC分类号： G03B7/083
摘要： A camera shutter control device includesA light intensity to electric signal conversion means, which means further includes a first photosensitive means and a second and a third photosensitive means. The first means and the second and third means are designed in such a manner that they receive the light beams coming from a substantially different part of the object to be photographed and give electrical signals corresponding to the light quantity received.A memory means is included, which is electrically connected with the first and second conversion means and serves to memorize the difference between the signal outputs of both conversion means.An operation means, the inputs of which are connected with said memory means and the third conversion means so as to give the difference between the outputs of both means as the operation output, andA control means, which is connected with the operation means so as to control the time for opening the shutter in accordance with the output of the operation means are also included.
摘要翻译： 照相机快门控制装置包括对电信号转换装置的光强度，其进一步包括第一感光装置和第二和第三感光装置。 第一装置和第二和第三装置被设计成使得它们接收来自待拍摄对象的基本上不同部分的光束，并且给出对应于所接收的光量的电信号。
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26.发明授权Photographic camera with an automatic exposure control adapter unit detachably mounted thereon 失效具有可拆卸地安装在其上的自动曝光控制适配器单元的照相机
公开(公告)号：US4130355A
公开(公告)日：1978-12-19
申请号：US740310
申请日：1976-11-09
CPC分类号： G03B7/097
摘要： An automatic exposure control system permitting for a photographic camera to make an exposure in either of the shutter preselection automatic exposure range and the diaphragm preselection automatic exposure range is established by combination of an adapter unit with the camera. This adapter unit has a housing attachable to and detachable from the camera body, and includes an exposure operation and control circuit capable, upon preselection of an exposure time, of deriving an exposure value representing an effective exposure aperture, and, upon preselection of diaphragm value, of deriving an exposure value representing an exposure time. Responsive to the output of the adapter unit, the control device in the camera body controls operation of the shutter and diaphragm mechanisms thereof selectively in accordance with the exposure value derived from said exposure operation and control circuit. The provision for permitting the camera to make an exposure in an automatic flash exposure range is also made at the exposure operation and control circuit of the adapter unit in a manner to determine the period of energization of a flash unit associated with the camera.
摘要翻译： 通过适配器单元与照相机的组合，建立允许照相机在快门预选自动曝光范围和光圈预选自动曝光范围中的曝光的自动曝光控制系统。 该适配器单元具有可附接到照相机主体并且可从相机主体拆卸的外壳，并且包括曝光操作和控制电路，该曝光操作和控制电路能够在预选曝光时间之后得到表示有效曝光孔径的曝光值，并且在预先选择光阑值 得出表示曝光时间的曝光值。 响应于适配器单元的输出，照相机主体中的控制装置根据从所述曝光操作和控制电路导出的曝光值选择性地控制快门和光阑机构的操作。 在适配器单元的曝光操作和控制电路中，也可以以确定与相机相关联的闪光单元的通电周期的方式来允许相机在自动闪光曝光范围内曝光的设置。
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