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公开(公告)号：US4057809A
公开(公告)日：1977-11-08
申请号：US666458
申请日：1976-03-12
申请人： Soichi Nakamoto , Tadashi Ito , Fumio Ito , Nobuhiko Shinoda
发明人： Soichi Nakamoto , Tadashi Ito , Fumio Ito , Nobuhiko Shinoda
CPC分类号： G03B7/093
摘要： This invention relates to photographic cameras, and more particularly to an exposure control circuit of the type in which an analog output representative of the object brightness level is converted to a digital signal which is factored into an exposure value, and the period of actuation of the camera shutter is controlled in accordance with this exposure value. Still more particularly, it relates to an improvement over this conventional type exposure control with respect to the A-D conversion. The prior art converts a voltage representative of the object brightness to a digital form by the use of an A-D converter such as of the follow comparison type which is characterized by the lack of integrating aspect in converting the input voltage to the corresponding digital signal. Therefore, when the illumination for the object being photographed is caused to flicker in a period of time shorter than the effective exposure time interval, an alternating current component is introduced into the input voltage of the converter. Accordingly, it is made impossible to effect accurate exposure control based on the digital signal representing the only object brightness level. The invention provides an exposure control circuit which is not susceptible of this alternate current component as it is removed in the course of the A-D conversion.
摘要翻译： 本发明涉及摄影相机，更具体地说，涉及一种类型的曝光控制电路，其中表示对象亮度级的模拟输出被转换成被考虑到曝光值中的数字信号，以及 照相机快门根据此曝光值进行控制。 更具体地，涉及相对于A-D转换的这种常规型曝光控制的改进。 现有技术通过使用诸如以下比较类型的A-D转换器将表示对象亮度的电压转换为数字形式，其特征在于在将输入电压转换为相应的数字信号时缺乏集成方面。 因此，当拍摄对象的照明在比有效曝光时间间隔短的时间段内被闪烁时，将交流分量引入转换器的输入电压。 因此，不可能基于表示唯一对象亮度级的数字信号来实现精确的曝光控制。 本发明提供了一种曝光控制电路，其在A-D转换过程中被去除时不会受到该交流分量的影响。
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公开(公告)号：US4137541A
公开(公告)日：1979-01-30
申请号：US619456
申请日：1975-10-03
申请人： Yukio Mashimo , Masanori Uchidoi , Masayoshi Yamamichi , Fumio Ito , Tokuichi Tsunekawa , Tadashi Ito
发明人： Yukio Mashimo , Masanori Uchidoi , Masayoshi Yamamichi , Fumio Ito , Tokuichi Tsunekawa , Tadashi Ito
CPC分类号： G03B7/097
摘要： An automatic exposure control apparatus for controlling the diaphragm of the camera in accordance with the preselected shutter time and the exposure value, in which a digital-to-analog converter having a counter responsive to the number of pulses supplied from a clock pulse generator through a gate produces a time variable output capable of attaining a certain level dependent upon the preselected shutter time and a light value as photoelectrically sensed, that is, an exposure value and, which is detected by a first comparator. The output of the first comparator is applied to the gate, so that the converter is set to memorize the exposure value therein. As the diaphragm presetting ring is moved from the maximum to minimum aperture position with production of a time variable output from a signal generator associated therewith, a second comparator responsive to the attainment of the time variable output of the signal generator to a level dependent upon the final output of the set converter produces an output which is applied to arresting means for the diaphragm presetting ring. This results in automatic adjustment of the position of the presetting ring. At the time the presetting ring begins to move, the diaphragm driving means is actuated causing the diaphragm means to be brought into engagement with the ring. Thus, an effective exposure aperture is established in the diaphragm means.
摘要翻译： 一种自动曝光控制装置，用于根据预选的快门时间和曝光值控制照相机的光圈，其中具有计数器的数模转换器响应于从时钟脉冲发生器通过一个 栅极产生能够获得一定水平的时间变量输出，这取决于预选的快门时间和光电感测的光值，即曝光值，并由第一比较器检测。 将第一比较器的输出施加到栅极，使得转换器被设置为存储其中的曝光值。 由于膜片预设环从最大孔径位置移动到最小孔径位置，产生与其相关联的信号发生器的时间变量输出，第二比较器响应于将信号发生器的时间可变输出达到取决于 设定转换器的最终输出产生一个输出，该输出应用于隔膜预调环的止动装置。 这样可以自动调节预置环的位置。 在预置环开始移动时，驱动隔膜驱动装置使隔膜装置与环接合。 因此，在隔膜装置中建立有效的曝光孔径。
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公开(公告)号：US4096493A
公开(公告)日：1978-06-20
申请号：US731939
申请日：1976-10-13
申请人： Akio Sunouchi , Yoshiaki Watanabe , Fumio Ito , Yukio Mashimo , Nobuaki Date , Tadashi Ito
发明人： Akio Sunouchi , Yoshiaki Watanabe , Fumio Ito , Yukio Mashimo , Nobuaki Date , Tadashi Ito
IPC分类号： G03B7/0805 , G03B7/091 , G03B9/07 , G03B19/12 , G03B7/08
摘要： A photographic camera having a manually and automatically adjustable diaphragm is provided with an electromagnetically operated diaphragm scanning mechanism in combination with a manually operable depth of field pre-viewing device to enable a visual determination of the utilizable zone of sharpness in a reflex viewfinder of the camera regardless of the fact that the camera remains in the run down position. For this purpose, the diaphragm scanning mechanism includes a scanning member and a driving member arranged to establish driving connection therebetwen during the automatic adjustment of the diaphragm. Release means is provided and is responsive to the termination of closing operation of the camera shutter for effecting release of the driving connection, whereby the photographer before cocking the camera is enabled to manipulate the diaphragm followed by the pre-viewing device to read off the range of sharpness in dependence on the manual setting of the diaphragm for use in making a subsequent exposure.
摘要翻译： 具有手动和可自动调节的光圈的照相机设置有电磁操作的隔膜扫描机构，与手动可操作的景深预先观察装置相结合，以使得能够可视地确定相机的反射取景器中的清晰度的可利用区域 不管相机是否处于运行状态。 为此，隔膜扫描机构包括扫描构件和布置成在隔膜的自动调节期间建立驱动连接的驱动构件。 提供释放装置并且响应于照相机快门的关闭操作的终止以实现驱动连接的释放，由此在启动相机之前的拍摄者能够操纵隔膜，然后是预先观看装置以读出该范围 根据用于进行后续曝光的隔膜的手动设置而具有清晰度。
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公开(公告)号：US4146317A
公开(公告)日：1979-03-27
申请号：US872914
申请日：1978-01-27
申请人： Nobuaki Date , Tadashi Ito , Yukio Mashimo , Akio Sunouchi , Fumio Ito , Yoshiaki Watanabe
发明人： Nobuaki Date , Tadashi Ito , Yukio Mashimo , Akio Sunouchi , Fumio Ito , Yoshiaki Watanabe
IPC分类号： G03B7/0805 , G03B7/081 , G03B7/085 , G03B7/08 , G03B9/02
摘要： An exposure control apparatus operating with selection of the diaphragm preselection and shutter preselection automatic exposure control modes is provided with first and second signal shapers arranged to cooperate with a lens aperture mechanism through a common intermediate member. Upon setting of a desired diaphragm value in the lens aperture mechanism, the intermediate member is driven along with the first signal shaper in exactly corresponding relation. In the shutter preselection automatic diaphragm control mode, while the first signal shaper is cut off from connection with an exposure value computer, the second signal shaper is driven for scanning operation to produce ever-varying outputs which are compared with the output of the computer upon coincidence to stop movement of the lens aperture mechanism, thereby the scanning result is translated to the proper diaphragm presetting, as the intermediate member is arranged to delay the start of movement of the lens aperture mechanism from the start of the scanning operation by a time interval determined by taking into account the signal response characteristics of the automatic diaphragm adjusting mechanism.
摘要翻译： 具有选择光圈预选择和快门预选自动曝光控制模式的曝光控制装置设置有布置成通过公共中间构件与透镜孔径机构配合的第一和第二信号整形器。 在透镜孔机构中设置期望的膜片值时，中间构件与第一信号整形器一起被精确地对应关系驱动。 在快门预选自动光圈控制模式中，当第一信号整形器与曝光值计算机的连接断开时，驱动第二信号整形器进行扫描操作，以产生与计算机的输出相比较的不断变化的输出 一旦停止镜头光圈机构的运动，扫描结果被转换成适当的光圈预设，因为中间部件被设置成延迟透镜孔径机构从扫描操作开始开始的时间间隔 通过考虑自动隔膜调节机构的信号响应特性来确定。
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公开(公告)号：US4165929A
公开(公告)日：1979-08-28
申请号：US859694
申请日：1977-12-12
申请人： Fumio Ito , Yukio Mashimo , Masayoshi Yamamichi , Masami Shimizu , Hiroyashu Murakami , Tadashi Ito
发明人： Fumio Ito , Yukio Mashimo , Masayoshi Yamamichi , Masami Shimizu , Hiroyashu Murakami , Tadashi Ito
摘要： An automatic camera being simple in handling and composition and provided with an accessory selectively mounted on the camera body or with an aperture value setting information device mounted on the camera body, so that the camera operation may select either the shutter time priority mode or the aperture value priority mode.
摘要翻译： 一种自动摄像机，其处理和组成简单，并且具有选择性地安装在相机主体上的附件或安装在照相机主体上的光圈值设置信息装置，使得相机操作可以选择快门时间优先模式或光圈 值优先模式。
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公开(公告)号：US4089011A
公开(公告)日：1978-05-09
申请号：US737345
申请日：1976-11-01
申请人： Nobuaki Date , Yoshiaki Watanabe , Akio Sunouchi , Yukio Mashimo , Fumio Ito , Tadashi Ito
发明人： Nobuaki Date , Yoshiaki Watanabe , Akio Sunouchi , Yukio Mashimo , Fumio Ito , Tadashi Ito
摘要： The present invention relates to an exposure information setting device for a camera having a digital control system in which the aperture value of the lens is applied to the exposure amount control circuit as digital information by means of the aperture value setting mechanism. The device is so designed that the first comb tooth shaped conductor pattern and the second comb tooth shaped conductor pattern are arranged in parallel with each other in such a manner that a phase difference takes place between them. A pair of series of pulses are obtained by making the contact in functional engagement with the aperture value setting operation, moving slidingly over the first and the second conductor patterns. The direction along which the aperture value information varies is detectable by applying the pair of series of pulses thus obtained to the exposure operational circuit through the phase sorting circuit.
摘要翻译： 本发明涉及一种具有数字控制系统的相机的曝光信息设定装置，其中通过光圈值设定机构将透镜的光圈值作为数字信息施加到曝光量控制电路。 该装置被设计成使得第一梳齿形导体图案和第二梳齿形导体图案彼此平行地布置，使得它们之间发生相位差。 通过使接触与孔径值设定操作功能接合而获得一对脉冲序列，滑动地移动到第一和第二导体图案上。 孔径值信息变化的方向可以通过将这样获得的一对脉冲序列通过相位分类电路施加到曝光操作电路来检测。
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公开(公告)号：US4821056A
公开(公告)日：1989-04-11
申请号：US141490
申请日：1980-04-18
摘要： A digital display system connected to an exposure indicator in a camera to provide a digital display representative of the exposure value in shutter speed by an array of numerical indicators of the block number eight type. When the numerical value of shutter speed is equal to or larger than one second, the indicator which is directly to the right of the least significant digit is utilized to display an indicium representing a "second" unit as is usual in digital stop watch art by driving a pair of upper-positioned parallel segments in the "FIG. eight" pattern to be lit serially from the least significant digit.
摘要翻译： 连接到照相机中的曝光指示器的数字显示系统，通过块数8类型的数字指示器阵列提供代表快门速度的曝光值的数字显示。 当快门速度的数值等于或大于1秒时，直接在最低有效位右侧的指示符被用来显示代表“数字秒表”中常用的“第二”单位的标记 在“图8”模式中驱动一对上位平行段，从最低有效数字串行点亮。
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公开(公告)号：US4118716A
公开(公告)日：1978-10-03
申请号：US781347
申请日：1977-03-25
摘要： A photographing mode selection device for a camera permitting selection of either a shutter speed preference photographing mode or a lens stop preference photographing mode as desired. To ensure excellent operability for photographing mode selection, the device has a swing lever provided coaxially with a shutter release button or a slide lever which is provided at a position close to the release button in such a way as to permit quick operation with a thumb.
摘要翻译： 一种照相机的拍摄模式选择装置，其允许根据需要选择快门速度偏好拍摄模式或镜头停止偏好拍摄模式。 为了确保拍摄模式选择的良好的可操作性，该装置具有与快门释放按钮或滑动杆同轴地设置的摆动杆，其设置在靠近释放按钮的位置，以允许用拇指快速操作。
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公开(公告)号：US4315674A
公开(公告)日：1982-02-16
申请号：US150959
申请日：1980-05-19
申请人： Kazuya Hosoe , Nobuhiko Shinoda , Minoru Fukuda , Takashi Kawabata , Takao Kinoshita , Tadashi Ito
发明人： Kazuya Hosoe , Nobuhiko Shinoda , Minoru Fukuda , Takashi Kawabata , Takao Kinoshita , Tadashi Ito
CPC分类号： G03B3/10
摘要： A focal point detection system for detecting the focus adjusting state of an image forming lens during its focusing operation on an object is disclosed. The system comprises a focus detection circuit which produces a detection output that varies with focusing of the lens on the object; a plurality of display elements are provided for display of the focusing state of the lens; and a display control circuit which enables the display elements to display a greater number of focusing states than the number of these display elements through selective combinations of these elements on the basis of the output of the focus detection circuit. The system is capable of displaying intermediate focusing states such as a slightly near-focus state, a slightly far-focus state, and the like in addition to in-focus, near-focus, and far-focus states, so that the focusing state can be displayed stepwise in a detailed manner.
摘要翻译： 公开了一种用于在对象物的聚焦操作期间检测图像形成透镜的焦点调整状态的焦点检测系统。 该系统包括焦点检测电路，其产生随着透镜在物体上的聚焦而变化的检测输出; 提供多个显示元件用于显示透镜的聚焦状态; 以及显示控制电路，其通过基于焦点检测电路的输出，通过这些元素的选择性组合，使得显示元件能够显示比这些显示元件的数量更多的聚焦状态。 除了聚焦，近焦点和远焦点状态之外，该系统能够显示中等聚焦状态，例如稍微接近焦点状态，稍微远焦点状态等，使得聚焦状态 可以以详细的方式逐步显示。
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公开(公告)号：US4443086A
公开(公告)日：1984-04-17
申请号：US330438
申请日：1981-12-14
申请人： Kazuya Hosoe , Takao Kinoshita , Nobuhiko Shinoda , Shinji Sakai , Takashi Kawabata , Tadashi Ito
发明人： Kazuya Hosoe , Takao Kinoshita , Nobuhiko Shinoda , Shinji Sakai , Takashi Kawabata , Tadashi Ito
CPC分类号： G02B7/34
摘要： In the disclosed focus adjusting device, at least part of an image forming optical system and a focus adjusting mechanism is arranged within a housing attachable to and detachable from a camera body. A focus condition detector includes a photo-sensor disposed on a plane corresponding to the camera image plane, an electrical detection circuit connected to the photo-sensor, and a detecting optical system for forming an image of at least a part of the object on the surface of the photo-sensor. An aural indicator emits a sound to inform a photographer of the condition of the image formed on the surface of the predetermined focal plane as determined by the focusing condition detector.
摘要翻译： 在所公开的焦点调节装置中，图像形成光学系统和焦点调节机构的至少一部分被布置在可附接到照相机主体并且可从照相机主体拆卸的壳体内。 焦点条件检测器包括设置在与摄像机图像平面相对应的平面上的光电传感器，连接到光传感器的电检测电路，以及检测光学系统，用于在物体的至少一部分上形成图像 光传感器的表面。 听觉指示器发出声音，以通知摄影者由聚焦状态检测器确定的在预定焦平面的表面上形成的图像的状态。
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