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    • 33. 发明授权
    • Automatic exposure control apparatus and a camera having the same
    • 自动曝光控制装置和具有该自动曝光控制装置的照相机
    • US4124855A
    • 1978-11-07
    • US807653
    • 1977-06-17
    • Masanori UchidoiHideaki MiyakawaHiroshi AizawaMasayoshi YamamichiOsamu OhshimaTokuichi Tunekawa
    • Masanori UchidoiHideaki MiyakawaHiroshi AizawaMasayoshi YamamichiOsamu OhshimaTokuichi Tunekawa
    • G03B7/085G03B7/08
    • G03B7/085
    • An automatic exposure control apparatus of electric type for a photographic camera having an exposure control parameter setting means cooperative with a geometrical progression scale in isometric graduation is provided with a resistor device. The device includes a variable resistor having a grounded slider associated with the setting means upon movement thereof for providing a resistor value proportional to the amount of movement of the setting means, but to the reciprocal logarithm of the preselected parameter value. In order to minimize the complexity of a computer circuit responsive to the various outputs of the resistor device for performing photographic Appex computation, a bias voltage is applied to each of the variable resistors in a manner to produce a signal in the form of current proportional to the reciprocal of the amount of movement of the setting means. The resistor device has a single substrate having a plurality of resistor elements formed thereon by a metal coating technique and arranged for cooperation with respective sliders, thereby improving the exposure control accuracy and stabilization of the performance of the computer circuit against variation of temperature distribution in the apparatus.
    • 具有电阻器装置的具有具有与等距离刻度上的几何级数相配合的曝光控制参数设定装置的照相机电式的自动曝光控制装置。 该装置包括可变电阻器,其具有与设置装置相关联的接地滑块,用于提供与设置装置的移动量成比例的电阻器值,而与预设参数值的倒数对数相对应。 为了最小化响应于用于执行照相Appex计算的电阻器装置的各种输出的计算机电路的复杂性,将偏压施加到每个可变电阻器,以产生与电流成比例的电流形式的信号 设定装置的移动量的倒数。 电阻器件具有通过金属涂覆技术形成在其上的多个电阻器元件的单个基板,并被布置为与各个滑块配合,从而提高了曝光控制精度,并且稳定了计算机电路的性能以防止温度分布的变化 仪器。
    • 34. 发明授权
    • Photographic camera with an electromagnetic control system
    • 具有电磁控制系统的照相机
    • US4099192A
    • 1978-07-04
    • US764291
    • 1977-01-31
    • Hiroshi AizawaMasanori UchidoiHideaki MiyakawaMasayoshi YamamichiYukio IuraMasahisa Fukui
    • Hiroshi AizawaMasanori UchidoiHideaki MiyakawaMasayoshi YamamichiYukio IuraMasahisa Fukui
    • G03B7/083G03B9/58G03B17/42G03B9/08
    • G03B9/58G03B17/42G03B7/083
    • A photographic camera having a magnetic actuating device associated with an electronic control device for initiating a release of one or more of the camera mechanisms from the cocked position thereof. In one embodiment of the invention, the magnetic actuating device comprises a single magnetic winding with a core material having a substantially rectangular hysteresis loop, and an armature of which the movement is controlled by the polarity of the magnetic winding and which is connected to spring-biased means for latching the mechanism in the cocked position. After the core is magnetized by applying a voltage to the magnetic winding for a relatively short period to hold the armature with the latching means in the cocked position against the force of the spring, the magnetic winding is energized by an output of the opposite polarity from the electronic control device causing the armature to move away from the core, whereby the release of the mechanism is initiated.
    • 一种具有与电子控制装置相关联的磁性致动装置的照相机,用于启动一个或多个照相机机构从其起始位置的释放。 在本发明的一个实施例中,磁致动装置包括具有大体上矩形磁滞回线的芯材的单个磁性绕组,以及电枢,其运动由磁性绕组的极性控制, 用于将机构锁定在被压缩位置的偏压装置。 在通过向磁性绕组施加电压相对较短的时间来使磁芯磁化之后,克服弹簧的力将锁定装置保持在锁定装置中的电枢,磁绕组由相反极性的输出激励 所述电子控制装置使所述电枢远离所述芯部移动,从而启动所述机构的释放。
    • 35. 发明授权
    • Power supply device for camera
    • 相机电源装置
    • US4387977A
    • 1983-06-14
    • US85230
    • 1979-10-16
    • Masanori UchidoiHiroshi AizawaKazunobu UrushiharaNobuyuki SuzukiMasami Shimizu
    • Masanori UchidoiHiroshi AizawaKazunobu UrushiharaNobuyuki SuzukiMasami Shimizu
    • G03B7/26G03B9/08
    • G03B7/26
    • The disclosed camera power control devices operate with a camera in which a first switch responds to initial movement of a shutter release member, and a second switch responds to further movement of the release member. In the power control device, turning the first switch on energizes the light metering and display circuits, and turning on the second switch supplies an exposure control circuit such as a shutter control circuit with electrical energy. The power control device is provided with an electrical timer circuit, and a selection arrangement operates to selectively actuate the timer circuit when the release member is returned to its rest position and the first switch changes is state from ON to OFF. During a period of time determined by the timer circuit, power continues to be supplied to operate the light metering and display circuits.
    • 所公开的照相机功率控制装置与其中第一开关响应快门释放构件的初始移动的照相机一起操作,并且第二开关响应于释放构件的进一步移动。 在功率控制装置中,转动第一开关使得计量和显示电路通电,并且打开第二开关为电能提供诸如快门控制电路的曝光控制电路。 功率控制装置设置有电定时器电路,并且当释放构件返回到其静止位置并且第一开关从接通变为断开状态时,选择装置用于选择性地启动定时器电路。 在由定时器电路确定的时间段期间,继续供电以操作测光和显示电路。
    • 38. 发明授权
    • Photometric circuit for camera
    • 相机光度计
    • US4247186A
    • 1981-01-27
    • US50124
    • 1979-06-19
    • Masanori UchidoiHiroshi AizawaKazunobu UrushibaraNobuyuki SuzukiMasami Shimizu
    • Masanori UchidoiHiroshi AizawaKazunobu UrushibaraNobuyuki SuzukiMasami Shimizu
    • G03B7/081G01J1/44G03B7/083
    • G01J1/44G03B7/08
    • A photometric circuit for a camera including a first operational amplifier with a photo-electric element connected between its inverted and non-inverted input terminals and, a logarithmic compression diode connected between the output terminal and the inverted input terminal of the first operational amplifier, thus providing a voltage corresponding to the logarithmic value of the brightness of an object to be photographed at the output terminal of the first operational amplifier.A second operational amplifier has a plurality of temperature compensating commonly polarized diodes connected in parallel between its inverted input terminal and the output terminal. A first constant voltage is applied to the non-inverted input terminal of the second operational amplifier while a second constant voltage is applied through a resistor to the inverted input terminal of the second operatonal amplifier, thereby providing temperature-compensation of the output voltage of said first operational amplifier.
    • 一种用于照相机的测光电路,包括连接在其反相和非反相输入端子之间的光电元件的第一运算放大器和连接在第一运算放大器的输出端和反相输入端之间的对数压电二极管,因此 提供与在第一运算放大器的输出端子处拍摄的物体的亮度的对数值相对应的电压。第二运算放大器具有多个温度补偿共极化二极管,并联连接在其反相输入端和 输出端子。 第一恒定电压施加到第二运算放大器的非反相输入端,而第二恒定电压通过电阻施加到第二操作放大器的反相输入端,从而提供所述第二运算放大器的输出电压的温度补偿 第一运算放大器。