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    • 2. 发明授权
    • Sound motion picture camera
    • 声音电影摄影机
    • US4196983A
    • 1980-04-08
    • US909952
    • 1978-05-26
    • Hiroyuki TakimotoHidekazu Okajima
    • Hiroyuki TakimotoHidekazu Okajima
    • G03B21/50G03B31/00G03B31/02
    • G03B31/02
    • A sound motion picture camera capable of using a sound film is disclosed. The camera includes a film receiving chamber having an image recording location and a sound recording location, a first film feeding device for intermittently transporting a film loaded in the chamber from the image recording location toward the sound recording location, a second film feeding device for transporting the film transported by the first film feeding means further downstream from the sound recording location at a substantially constant speed, a switching device interposed between the first and second film feeding devices and a control device for controlling the operation of the film feeding devices. The switching device is so designed that ON-OFF of the switch is controlled by the movement of the film and that the switch produces pulse signals at an almost constant interval so long as the film transporting operations of the first and second film feeding devices are going well keeping a desired proper operating relation therebetween. But, whenever the operating relation of the two film feeding devices becomes disordered, the switch device continues putting out positive or negative signals. These signals are detected by the control device which terminates the film transporting operations of both the first and second film feeding devices when the ON or OFF signals continue coming out from the switching device for a longer time period than a predetermined time duration.
    • 公开了能够使用声膜的声像摄像机。 相机包括具有图像记录位置和声音记录位置的胶片接收室,用于间歇地将从该图像记录位置向该声音记录位置传送的室中的胶片传送的第一胶片馈送装置,用于传送 通过第一胶片进给装置以基本上恒定的速度进一步在声音记录位置的下游传送的胶片,插入在第一和第二胶片供给装置之间的切换装置和用于控制胶片输送装置的操作的控制装置。 开关装置被设计成使得开关的ON-OFF由膜的移动控制,并且开关以几乎恒定的间隔产生脉冲信号,只要第一和第二胶片馈送装置的胶片传送操作正在进行 保持期望的正确操作关系。 但是,无论何时两个胶片馈送装置的操作关系变得无序,开关装置将继续输出正或负的信号。 这些信号由控制装置检测到,当ON或OFF信号在比预定持续时间更长的时间段内继续从开关装置出来时,终止第一和第二胶片馈送装置的胶片传送操作。
    • 4. 发明授权
    • Sound motion picture camera capable of overlapping exposures
    • 能够重叠曝光的声音电影摄像机
    • US4326782A
    • 1982-04-27
    • US72322
    • 1979-09-04
    • Hidekazu Okajima
    • Hidekazu Okajima
    • G03B17/00G03B19/26G03B31/00G03B31/02G03B21/36
    • G03B19/26G03B31/02
    • A sound motion picture camera capable of overlapping exposures by automatically controlling the sequence of a first step beginning with stopping of the take-up spool in a film cassette from further rotation in response to initiation of an overlapping exposure operation and terminating with a predetermined length of film being accumulated in the cassette in the form of a slack loop, a second step of rewinding the length of the looped film without further exposing the film and a third step of transporting the rewound film in the forward direction again while exposing the film again, characterized by the provision of control means for allowing release of a head pad from pressure contact against the magnetic head when the above second step starts.
    • 一种能够通过自动控制第一步骤的顺序的声音电影摄像机,其响应于重叠的曝光操作的开始而响应于重叠的曝光操作的开始而以胶卷盒中的卷取卷轴的停止而进一步旋转,并且以预定长度的 膜以松弛环的形式积聚在盒中,第二步是重新卷绕环状膜的长度而不进一步暴露该膜;以及第三步骤,在再次暴露该膜的同时向前方向输送倒带膜, 其特征在于提供控制装置,用于当上述第二步骤开始时允许头垫从磁头的压力接触释放。
    • 8. 发明授权
    • Light metering system for a photographic camera
    • 照相机的计量系统
    • US4118714A
    • 1978-10-03
    • US763078
    • 1977-01-27
    • Hidekazu OkajimaHideto Iwama
    • Hidekazu OkajimaHideto Iwama
    • G03B7/085G03B7/099G03B7/08
    • G03B7/085G03B7/09976
    • A light metering system for a photographic camera which may be selectively operated in a through-the-lens (TTL) light metering mode or an outside-the-lens (OTL) light metering mode to improve the exposure control accuracy over an extended range of light levels particularly towards the low light level side. In one embodiment, the light metering system employs a single light value sensing element in combination with light path changeover means arranged upon movement to change over the light metering aspect between the TTL and OTL light metering modes. In another embodiment, there is provided two light value sensing elements of different light response characteristics from each other for adaptation to the respective light metering modes in combination with a circuit transfer switch operable to select either the TTL light metering mode or the OTL light metering mode. With a camera equipped with a shutter preselection automatic exposure control range and a diaphragm preselection automatic exposure control range, it is possible to realize suitable combinations of the exposure control modes with the light metering modes.
    • 一种用于照相机的测光系统,其可以通过透镜(TTL)测光模式或外部透镜(OTL)测光模式选择性地操作,以提高在扩展范围内的曝光控制精度 光线水平特别偏向低光平面。 在一个实施例中,测光系统采用单个光值感测元件与光路切换装置相结合,光路切换装置在运动时被布置,以便在TTL和OTL测光模式之间转换测光方面。 在另一个实施例中,提供了两个彼此不同的光响应特性的光值感测元件,用于适应各个测光模式,结合可操作以选择TTL测光模式或OTL测光模式的电路转换开关 。 配备有快门预选自动曝光控制范围和光圈预选自动曝光控制范围的相机,可以实现曝光控制模式与光测光模式的适当组合。