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公开(公告)号：US4170411A
公开(公告)日：1979-10-09
申请号：US751947
申请日：1976-12-17
摘要： In the system disclosed, a feedback circuit connects the output of the last of a plurality of cascaded amplifier stages to the input of the first stage. A photoelectric transducer is connected to one of the stages. The feedback connection compresses the output signal relative to the signal at the photoelectric transducer, logarithmically. Preferably all the stages are linear and the feedback circuit is linear so that no logarithmic members are required. Preferably each of the stages is composed of an amplifier and a connection corresponding to an emitter-follower connection. A suitable system then utilizes the compression characteristic in a shutter control. This system may use a second compression circuit comparable to the first. Additional photographic information may be applied to the input of any of the stages in either compression circuit.
摘要翻译： 在所公开的系统中，反馈电路将多个级联放大器级中的最后一级的输出连接到第一级的输入端。 光电传感器连接到其中一个级。 反馈连接相对于光电传感器的信号压缩输出信号，对数。 优选地，所有级是线性的并且反馈电路是线性的，使得不需要对数构件。 优选地，每个级由放大器和对应于射极跟随器连接的连接组成。 合适的系统然后利用快门控制中的压缩特性。 该系统可以使用与第一压缩电路相当的第二压缩电路。 附加的照相信息可以应用于压缩电路中的任何级的输入。
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公开(公告)号：US4402468A
公开(公告)日：1983-09-06
申请号：US278998
申请日：1981-06-30
申请人： Nobuo Tezuka , Tatsuya Taguchi
发明人： Nobuo Tezuka , Tatsuya Taguchi
CPC分类号： G03B17/30 , G03B2217/261
摘要： A film takeup spool provided with pawls in the interior of a sleeve hub thereof at such a location that pivot pins of the pawls are off-set from the axis of rotation of the sleeve hub. The pawls are urged by respective springs to project their teeth radially outwardly of the sleeve hub into the perforations of the film. When the spool is driven to rotate with a sufficient tension of the film, the pawl teeth are retracted into the sleeve hub, thus permitting a smooth winding up of the film on the sleeve hub of the takeup spool.
摘要翻译： 在其套筒毂的内部设置有棘爪的薄膜卷取卷轴在这样的位置处，即爪的枢转销从套筒毂的旋转轴线偏离。 棘爪被相应的弹簧推动，以将其牙齿径向向外突出到套筒的穿孔中。 当卷轴被驱动以具有足够的薄膜张力旋转时，棘爪齿缩回到套筒毂中，从而允许胶片在卷取卷筒的套筒毂上平滑地卷起。
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公开(公告)号：US4121231A
公开(公告)日：1978-10-17
申请号：US771385
申请日：1977-02-23
申请人： Tatsuya Taguchi , Nobuaki Date
发明人： Tatsuya Taguchi , Nobuaki Date
摘要： An exposure factor setting device for a photographic camera comprising manually adjustable shutter speed and diaphragm aperture setting components, an indicator cooperative with a shutter speed scale and capable of responding to either of the outputs of the shutter speed setting component and an exposure value computer, and first and second gates connected respectively between the shutter speed setting component and the indicator and between the computer and the indicator and arranged to be acted on alternately in sequence by a common pulse generator. When the previously selected combination of shutter speed and diaphragm aperture is not correct in conformity with the prevailing scene brightness, the indicator is caused to flicker between two positions for the automatic and manual shutter speed values. To attain correct adjustment of shutter speed and diaphragm aperture, the photographer may operate with either of the shutter speed and diaphragm aperture setting components until the amplitude of flickering of the indicator is reduced to zero, while looking through the finder as the indicator is visible in or adjacent the finder image field.
摘要翻译： 一种用于照相机的曝光因子设置装置，包括手动调节的快门速度和光圈孔径设置部件，与快门速度刻度器协调的并且能够响应快门速度设置部件和曝光值计算机中的任一个的指示器，以及 第一和第二门分别连接在快门速度设定部件和指示器之间以及计算机与指示器之间，并且被布置为通过公共脉冲发生器顺序交替地进行操作。 当先前选择的快门速度和光圈光圈的组合不符合当前的场景亮度时，指示灯会在自动和手动快门速度值的两个位置之间闪烁。 为了获得快门速度和光圈孔径的正确调整，拍摄者可以使用快门速度和光圈孔径设置组件中的任何一个进行操作，直到指示灯闪烁的幅度减小到零，同时通过取景器观察指示器是否可见 或邻近取景器图像场。
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公开(公告)号：US4096499A
公开(公告)日：1978-06-20
申请号：US714563
申请日：1976-08-16
申请人： Tatsuya Taguchi , Nobuaki Date
发明人： Tatsuya Taguchi , Nobuaki Date
CPC分类号： G03B19/12
摘要： In a reflex camera a mirror support is composed of a base with flexible members and arms carried by the base. Each arm has one end bendable to position the mirror on the base, while the other end forms a stop to restrict movement of the mirror. The arms also have axle bearing support for positioning the base relative to the light path and the reflective plane of the mirror. The flexible members of the base are adhesively coated for holding the mirror in position relative to the light path.
摘要翻译： 在反光相机中，镜支架由具有柔性构件的基座和由基座承载的手臂组成。 每个臂具有可弯曲的一端以将反射镜定位在基座上，而另一端形成止挡件以限制反射镜的运动。 臂还具有用于将基座相对于光路和反射镜的反射平面定位的轴承支撑件。 基底的柔性构件被粘合地涂覆以将镜子相对于光路保持在适当位置。
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公开(公告)号：US3946408A
公开(公告)日：1976-03-23
申请号：US513537
申请日：1974-10-10
申请人： Tatsuya Taguchi
发明人： Tatsuya Taguchi
摘要： A separate annular actuator button surrounding the shutter release button and provided with its own mechanical stop is used to move the shutter release button just far enough to switch in the storage capacitor of a TTL light measuring system of a single-lens reflex camera. This annular button can conveniently and naturally be depressed in advance of direct manipulation of the shutter release button, assuring enough time for charging the capacitor rather than relying on the rate of direct manual depression of the shutter release button to interpose enough time between capacitor switch-in and shutter release. The capacitor charging which determines the timing of shutter closing is stopped by breaking the charging current before mirror movement or lens stop-down.
摘要翻译： 使用围绕快门释放按钮并设置有其自己的机械止动件的单独的环形致动器按钮将快门释放按钮移动到足够远以便切换单镜头反光相机的TTL光测量系统的存储电容器。 这种环形按钮可以在快门释放按钮的直接操纵之前方便自然地被按下，确保足够的时间对电容器充电，而不是依靠直接手动按下快门释放按钮的速率来在电容器开关 - 进入和快门释放。 通过在镜子移动或镜头停止之前中断充电电流来停止确定快门关闭定时的电容器充电。
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公开(公告)号：US4647174A
公开(公告)日：1987-03-03
申请号：US769795
申请日：1985-08-26
申请人： Tokuichi Tsunekawa , Kazuya Hosoe , Takao Kinoshita , Takashi Kawabata , Shinji Sakai , Tatsuya Taguchi
发明人： Tokuichi Tsunekawa , Kazuya Hosoe , Takao Kinoshita , Takashi Kawabata , Shinji Sakai , Tatsuya Taguchi
CPC分类号： G02B7/346
摘要： Disclosed is a method of detecting the focusing condition of an image forming optical system to an object, in which two images of the object are formed with respective light beams from the prescribed exit pupil areas lying in almost symmetry to each other with respect to the optical axis of the optical system and are sensed to obtain an equal number of picture element data for each of the images, and based on the thus-obtained picture element data, while sequential shifting for the first image is carried out from its one end to its opposite end, and a sequential shifting for the second image from its symmetric one end thereto to its opposite end, each by a predetermined number of picture elements, a correlation betweeen the first and second images in every predetermined equal number of picture elements is sought, whereby an optimum correlation is obtained, the corresponding mutual positional relationship between the above-described predetermined numbers of picture elements is detected to discriminate whether or not the above-described image forming optical system is in focus for the above-described object.
摘要翻译： 本发明公开了一种检测图像形成光学系统到物体的聚焦状态的方法，其中物体的两个图像形成有相对于光学器件彼此几乎对称的规定出射光瞳区域的各个光束 并且被感测以获得每个图像的相等数量的图像元素数据，并且基于如此获得的图像元素数据，而对于第一图像的顺序移位从其一端执行到其第 并且第二图像从其对称的一端到其相对端的顺序移位，每个由预定数量的图像元素，寻求在每个预定的相等数量的图像元素中的第一和第二图像之间的相关性， 从而获得最佳相关性，检测上述预定数量的图像元素之间的对应的相互位置关系 鉴别上述成像光学系统是否对于上述目的而言是焦点。
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公开(公告)号：US4346970A
公开(公告)日：1982-08-31
申请号：US179548
申请日：1980-08-19
申请人： Takashi Kawabata , Tokuichi Tsunekawa , Kazuya Hosoe , Takao Kinoshita , Shinji Sakai , Tatsuya Taguchi
发明人： Takashi Kawabata , Tokuichi Tsunekawa , Kazuya Hosoe , Takao Kinoshita , Shinji Sakai , Tatsuya Taguchi
摘要： Disclosed is a TTL (Through-The-Lens) type focus detecting device for use in an interchangeable lens-equipped camera, in which a plurality of lenslets are positioned at or near the prescribed focal plane of the objective lens, each of the lenslets is associated with two or more pairs of photosensitive elements. Upon attachment of an objective lens to the camera body, one of the pairs of photosensitive elements for each lenslet is automatically selected to operate on the basis of the dimensions of the used objective lens. The outputs of the selected pairs of photosensitive elements for all the lenslets are processed to detect whether or not a positional difference between two images of an object formed with light beams from the objective lens at respective virtual exit pupils lying in almost symmetry with respect to the optical axis thereof is present, whereby the detection of whether or not the objective lens is in-focus is indicated.
摘要翻译： 公开了一种TTL（透镜）型焦点检测装置，用于可更换镜头的相机，其中多个小透镜位于物镜的规定焦平面处或附近，每个小透镜是 与两对或更多对感光元件相关联。 在将物镜附着到相机主体上时，根据所使用的物镜的尺寸自动选择每个小透镜的一对感光元件。 对所有小透镜的所选择的感光元件对的输出进行处理，以检测在相应虚拟出射瞳孔处的物镜形成的来自物镜的光束的两个图像之间的位置差异是否相对于 存在其光轴，由此指示物镜是否为焦点的检测。
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公开(公告)号：US4280151A
公开(公告)日：1981-07-21
申请号：US13364
申请日：1979-02-21
CPC分类号： H04N5/77 , Y10S358/906
摘要： A magnetic image recording system in which an image is electrically scanned to obtain a video signal and this is magnetically recorded on a magnetic recording medium. According to improvements of the present invention, for the image scanning means, use is made of a two-dimensional arrangement of a plurality of photo-sensitive elements and further of a self-scanning type solid-state image sensing device constructed so as to be capable of simultaneously reading out image scanning signals from the individual lines of the two-dimensional arrangement. With this solid-state image sensing device, in scanning an image, it is, for example, the individual odd number lines in the aforesaid two-dimensional arrangement that at first produce image scanning signals based on which the video signal is obtained. Then the video signal is recorded as an odd number field signal on the recording medium through a multi-head. Then, another video signal obtained by image scanning signals from the individual even number field signal is recorded on the recording medium through the multi-head. Compared with conventional systems in which horizontal field lines are sequentially scanned and recorded, all of the horizontal video scan line signals which constitute an entire field are simultaneously recorded in the present system. In other words, in contrast to conventional systems wherein images are recorded and played back at a rate of, for example, 60 fields per second, the system of the present invention enables a substantially greater number of fields to be recorded each second so that when the recorded fields are played back at a conventional rate, i.e., 60 fields per second, a substantial "slow motion" reproduction can be obtained.
摘要翻译： 一种磁图像记录系统，其中电子扫描图像以获得视频信号，并将其磁记录在磁记录介质上。 根据本发明的改进，对于图像扫描装置，使用多个感光元件的二维布置，还使用自扫描型固态图像感测装置，其被构造为 能够同时读出来自二维排列的各行的图像扫描信号。 利用该固体摄像装置，在扫描图像时，例如是上述二维配置中的各个奇数行，其首先产生基于该视频信号获得的图像扫描信号。 然后，通过多头将视频信号作为奇数场信号记录在记录介质上。 然后，通过来自各个偶数场信号的图像扫描信号获得的另一视频信号通过多头被记录在记录介质上。 与依次扫描和记录水平场线的常规系统相比，构成整个场的所有水平视频扫描线信号同时被记录在本系统中。 换句话说，与其中以例如60场/秒的速率记录和再现图像的常规系统相反，本发明的系统能够每秒记录大量的场，使得当 记录的场以常规速率播放，即每秒60场，可以获得实质的“慢动作”再现。
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