公开(公告)号：US4030820A

公开(公告)日：1977-06-21

申请号：US638195

申请日：1975-12-05

申请人： Tetsuo Nishizawa

发明人： Tetsuo Nishizawa

IPC分类号： G03B9/12 ,  G03B9/58 ,  G03B19/26 ,  G03B21/36

CPC分类号： G03B9/58 ,  G03B19/26 ,  G03B9/12

摘要： A fading device for a motion picture camera includes a pair of sectors rotated with respect to each other to vary the angle of a light passing section formed thereby to obtain a fade-in or fade-out effect. The sectors are rotated relatively to each other by means of a drive mechanism operated by a motor by way of a change-over mechanism which is operable to change the direction of the relative rotation of the sectors. An indicator is connected with the change-over mechanism to indicate whether the fade-in or fade-out is possible in accordance with the situation of the sectors.

摘要翻译： 用于电影摄像机的衰落装置包括相对于彼此旋转的一对扇区，以改变由此形成的光通过部分的角度，以获得淡入或淡出效果。 这些扇区通过由电动机操作的驱动机构相对旋转，该驱动机构通过可操作以改变扇区的相对旋转方向的转换机构。 指示符与切换机制相关联，以指示是否可以根据扇区的情况进行淡入或淡出。

公开(公告)号：US4903059A

公开(公告)日：1990-02-20

申请号：US241206

申请日：1988-09-07

申请人： Kazuhiko Onda ,  Masayoshi Hirai ,  Tetsuo Nishizawa ,  Muneyoshi Sato ,  Nobuyuki Kameyama ,  Haruo Onozuka ,  Masashi Takamura ,  Takashi Kamoda ,  Kiyotaka Kobayashi

发明人： Kazuhiko Onda ,  Masayoshi Hirai ,  Tetsuo Nishizawa ,  Muneyoshi Sato ,  Nobuyuki Kameyama ,  Haruo Onozuka ,  Masashi Takamura ,  Takashi Kamoda ,  Kiyotaka Kobayashi

IPC分类号： G03B17/42 ,  G03B1/18

CPC分类号： G03B17/425

摘要： A camera is disclosed which is capable of winding and rewinding a film and adjusting a focal distance by use of a single motor. In the camera, the forward rotation of the motor is used to wind the film, and when the film winding operation is completed after termination of photographing, on detecting the end of the film, a torque detect mechanism switches a planetary clutch mechanism to connect the motor with a film rewinding mechanism. Thus, it is possible to perform both the film winding and rewinding operations by use of the rotation of the motor in the same direction. Also, when, with the planetary clutch mechanism connected with the film winding mechanism, the motor is rotated reversely, then the power transmission system is switched over to a focal distance varying mechanism, whereby the focal distance can be adjusted.

摘要翻译： 公开了一种能够通过使用单个电动机卷绕和重绕胶片并调整焦距的照相机。 在照相机中，电动机的正向旋转用于卷绕胶片，当拍摄结束后胶片卷绕操作完成时，在检测到胶卷的末端时，转矩检测机构切换行星离合器机构， 电机具有胶卷倒带机构。 因此，可以通过使马达沿相同方向的旋转来进行胶卷卷绕和重卷操作。 此外，当使用与胶片卷绕机构连接的行星离合器机构将电动机反向旋转时，将动力传递系统切换到焦距变化机构，由此可以调整焦距。

公开(公告)号：US4641935A

公开(公告)日：1987-02-10

申请号：US780005

申请日：1985-09-25

申请人： Takao Umezu ,  Minoru Ishiguro ,  Tetsuo Nishizawa

发明人： Takao Umezu ,  Minoru Ishiguro ,  Tetsuo Nishizawa

IPC分类号： G03B1/00 ,  G03B17/00 ,  G03B17/18 ,  G03B17/28 ,  G03B17/42 ,  G03B1/12

CPC分类号： G03B17/425

摘要： An automatic winding camera wherein winding operations such as wind-up, rewinding, frame feed, etc. of a film are automatically performed.In the camera according to the present invention, when the absence of the film in a film running path in a camera is detected by a film detecting device during winding of the film, a control device controls a driving device for driving a film winding mechanism to operate until a film winding detecting device detects that at least a predetermined length of the film is wound up. With this arrangement, when the film is rewound into a magazine after the takings, the forward end portion of the film can be entirely received in the magazine, so that such disadvantages can be obviated that dust intrudes into and light falls into the magazine.

摘要翻译： 自动卷绕相机，其中自动执行诸如胶卷的卷绕，倒带，框架进给等卷绕操作。 在根据本发明的照相机中，当在胶片卷绕期间通过胶片检测装置检测到相机中的胶片运行路径中的胶卷不存在时，控制装置控制用于驱动胶片卷绕机构的驱动装置 操作直到胶片卷绕检测装置检测到胶卷的至少预定长度被卷起。 利用这种布置，当胶片在卷取之后被重新卷绕到盒中时，胶片的前端部分可以完全容纳在胶卷盒中，从而可以避免灰尘进入和落入盒中的这些缺点。

公开(公告)号：US4400074A

公开(公告)日：1983-08-23

申请号：US353031

申请日：1982-03-01

申请人： Kazuhiko Akiyama ,  Takeshi Yoshino ,  Michihiro Shiina ,  Shigeo Sato ,  Tetsuo Nishizawa ,  Toshio Yoshida ,  Nobuo Kobayashi

发明人： Kazuhiko Akiyama ,  Takeshi Yoshino ,  Michihiro Shiina ,  Shigeo Sato ,  Tetsuo Nishizawa ,  Toshio Yoshida ,  Nobuo Kobayashi

IPC分类号： G03B17/42 ,  G03B1/18 ,  G03B17/36

CPC分类号： G03B17/425

摘要： An automatic rewinding camera wherein an automatic advance of the photographic film by one frame is caused by shutter release operation and rewinding of the photographic film is automatically started when the film is prevented from further advance. The camera has a film-driven sprocket wheel, by the rotation of which film movement signals are produced. A timer circuit maintains, during the passage of a predetermined active time which is shorter than the time required to advance the photographic film by one frame, the camera motor in forward rotation so as to advance the photographic film. The timer circuit is reset by the film movement signals. But when those film signals stop, that is, when the film is fully extended from the cartridge, then the timer is not reset; and the measurement of the full predetermined active time, by the timer, without resetting, results in the motor being reversed to rewind the film.

摘要翻译： 一种自动倒带摄像机，其中通过快门释放操作引起摄影胶片自动前进一帧，并且当防止胶片进一步前进时，照相胶片的倒带自动开始。 照相机具有胶片驱动的链轮，通过产生胶片移动信号的旋转。 定时器电路在比预定的活动时间短的过程中保持照相胶片前进一帧所需的时间，以使照相胶片前进。 定时器电路由胶片移动信号复位。 但是当这些电影信号停止时，也就是说，当胶片从墨盒完全伸出时，定时器不复位; 并且通过定时器对整个预定的活动时间进行测量而不进行复位，导致电动机被反转以倒带。

公开(公告)号：US3951531A

公开(公告)日：1976-04-20

申请号：US529752

申请日：1974-12-05

申请人： Hiroshi Nakai ,  Tetsuo Nishizawa ,  Ziro Sekine

发明人： Hiroshi Nakai ,  Tetsuo Nishizawa ,  Ziro Sekine

IPC分类号： G03B19/18 ,  G03B1/22 ,  G03B9/10

CPC分类号： G03B1/22 ,  G03B9/10

摘要： A rotary shutter of a motion picture camera comprises a pair of fan-shaped sectors which are capable of changing the angle of opening formed thereby. The sector shaft is rotated through a gear train by a claw driving shaft which in turn is rotated by a driving motor. The gear train comprises a pair of gear train means either of which is selectively used to transmit the rotation of the claw driving shaft to the sector shaft. The ratio of the rate of revolution of one shaft to that of the other is changed by changing the gear train means. A switchover means is provided to switchover the gear train from one to the other. The switchover means is associated with means for changing the angle of opening formed by the sectors. In the mode of the prolonged time exposure, the speed of revolution of the sector is reduced to the half of that of the sector in the mode of the normal motion picture. The claw is caused to be out of engagement with the perforation of the film during every other reciprocal movement of the claw so that the film will remain stationary during every other reciprocal movement of the claw to effect a prolonged exposure time.

摘要翻译： 电影摄像机的旋转快门包括能够改变由此形成的开口角度的一对扇形扇区。 扇形轴通过爪驱动轴通过齿轮系旋转，该爪驱动轴又由驱动电机旋转。 齿轮系包括一对齿轮系，其中任何一个选择性地用于将爪驱动轴的旋转传递到扇形轴。 通过改变齿轮组装置来改变一个轴的转速与另一个轴的转速之比。 提供切换装置以将齿轮系从一个切换到另一个。 切换装置与用于改变扇区形成的开口角度的装置相关联。 在长时间曝光的模式中，在正常运动图像的模式中扇区的转速降低到扇区的转速。 在爪的每隔一个往复移动期间，使爪与胶片的穿孔脱离接合，使得胶片在爪的每隔一个往复移动期间保持静止，以实现长时间的曝光时间。