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公开(公告)号：DE3441025A1
公开(公告)日：1985-05-30
申请号：DE3441025
申请日：1984-11-09
Applicant: CANON KK
Inventor： DATE NOBUAKI , TEZUKA NOBUO , SAITO SYUICHIRO , TOJO AKIHIKO
Abstract: A video recording device is specified, which has an image-sensor device for converting an optical image into an electrical signal, a shutter for blocking the light which is incident onto the image-sensor device, a signal-generator device for forming periodic signals which are produced in order to read the electrical signal out of the image-sensor device periodically, a switch for inputting a command in order to operate the shutter, a first time-transmitter device which is set in operation by a predetermined, periodic signal which is produced after operation of the switch, and a shutter-control device which starts to open the shutter once a time duration which is predetermined and calculated by means of the time-transmitter device has elapsed. The video-recording device makes it possible, by means of the first time-transmitter device, to prevent any delay in the operation of the shutter and the like. The video-recording device is furthermore equipped with a shutting-detection device, which detects a displacement of the shutter from an open state to a closed state, and with a blocking device which prevents the reading (which is caused by the signal-generator device) until, after the start of a freeze-frame video recording process, the output signal of the shutter-detection device is received. Using this design, any ... … Original abstract incomplete.
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公开(公告)号：DE3100187A1
公开(公告)日：1981-12-03
申请号：DE3100187
申请日：1981-01-07
Applicant: CANON KK
Inventor： SAITO SYUICHIRO
Abstract: An electromagnetic rotation-closure drive device is described, having a movable coil which is fitted or supported such that it can rotate in the magnetic field of the stator which consists of a cylindrical yoke and a permanent magnet which is magnetised in the diametric direction, said yoke and magnet being arranged concentrically with respect to one another and the device being constructed such that the permanent magnet is formed from a plastic magnet, an engagement section for the stop holder for attachment of the magnet being formed on the yoke.
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公开(公告)号：DE3011693C2
公开(公告)日：1997-06-05
申请号：DE3011693
申请日：1980-03-26
Applicant: CANON KK
Inventor： SUGIUTA YOJI , DATE NOBUAKI , SUZUKI RYOICHI , SAITO SYUICHIRO
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公开(公告)号：DE3047827A1
公开(公告)日：1981-09-03
申请号：DE3047827
申请日：1980-12-18
Applicant: CANON KK , CANON DENSHI KK
Inventor： OHNIWA TAKEHIKO , SAITO SYUICHIRO
Abstract: A moving coil type electromagnetic driving source designed to obtain reliable contact between slide pieces and current supply brushes for supplying current to the moving coil wherein each slide piece is provided with grooves having two inclined surfaces opposed to each other, with an elastic brush having a circular or semi-circular section being provided for each groove such that the brush is in contact with the groove at two points.
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公开(公告)号：DE3126337A1
公开(公告)日：1982-04-29
申请号：DE3126337
申请日：1981-07-03
Applicant: CANON KK , CANON DENSHI KK
Inventor： SENUMA MICHIO , SHIMADA FUMIO , SHIGETA YOSHIHIRO , SAITO SYUICHIRO , AIZAWA HIROSHI , OHNIWA TAKEHIKO
Abstract: Electromagnetically released shutter in which the curtains or shutter elements are locked in the cocked state by retaining elements, and in which exposure is performed by releasing the shutter elements from the retaining elements. A first retaining element is provided for the purpose of locking each of the cocked shutter elements. Furthermore, a second retaining element is provided which locks the respective shutter element after it has been released from the first retaining element. The shutter element is released from the second retaining element by an electromagnet. The releasing moment required for the second retaining element is smaller than the releasing moment required for the first retaining element.
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Patent Agency Ranking
公开(公告)号：DE3126162A1
公开(公告)日：1982-04-22
申请号：DE3126162
申请日：1981-07-02
Applicant: CANON KK , CANON DENSHI KK
Inventor： SHIMADA FUMIO , SAITO SYUICHIRO , SENUMA MICHIO , SHIGETA YOSHIHIRO , AIZAWA HIROSHI , OHNIWA TAKEHIKO
IPC: G03B9/08
Abstract: A description is given of an electromagnetic shutter release which is designed such that the shutter can be released by means of a small and relatively weak magnet, the shutter being held reliably in the cocked state by means of a first anchor element in order to prevent the shutter from being inadvertently released by a jolt or the like. At the instant of exposure, the first anchor element is released mechanically in a fashion corresponding to the release of the camera, in which case the shutter is held for a time by means of a second anchor element and then released electromagnetically.
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公开(公告)号：DE3017893A1
公开(公告)日：1980-11-20
申请号：DE3017893
申请日：1980-05-09
Applicant: CANON KK
Inventor： SAITO SYUICHIRO
Abstract: In a slit shutter such as a focal plane shutter of the two blade type, the shutter blades and electrically operated magnetic drive means therefor are arranged on opposite sides of respective rotatable transmission means with respect to the axes thereof and are coupled therewith respectively to be movable in opposite directions relative to each other, whereby the possibility of a shock producing effect in the shutter is reduced at the time of actuation thereof.
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公开(公告)号：DE3501554A1
公开(公告)日：1985-08-14
申请号：DE3501554
申请日：1985-01-18
Applicant: CANON KK
Inventor： TEZUKA NOBUO , DATE NOBUAKI , SAITO SYUICHIRO , KOZUKI SUSUMU
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公开(公告)号：DE3133879A1
公开(公告)日：1982-04-22
申请号：DE3133879
申请日：1981-08-27
Applicant: CANON KK
Inventor： HASHIMOTO TEIJI , SAITO SYUICHIRO
Abstract: Disclosed is a magnetically controlled focal plane shutter wherein one electromagnet controls a leading shutter curtain and another electromagnet controls a following shutter curtain by releasing respective checking members as power is supplied thereto. The electromagnetic characteristics of the electromagnet that controls the following shutter curtain differ from those of the electromagnet controlling the leading shutter curtain. According to a specific embodiment disclosed, the follower-curtain controlling electromagnet saturates earlier than the leading curtain controlling magnet so as to compensate for deterioration of an energizing battery and thereby limits the problem of shutter time lag resulting from the long battery use.
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公开(公告)号：DE3045981A1
公开(公告)日：1981-09-17
申请号：DE3045981
申请日：1980-12-05
Applicant: CANON KK
Inventor： YOSHIDA SYOZO , SAITO SYUICHIRO
Abstract: An electromagnetically driven shutter for use in a photographic camera has blades driven by an electromagnetic drive source to move in vertical directions. The electrical power supply control means for the electromagnetic drive source is provided with means for detecting the photographic posture of the camera, whereby the output torque of the electromagnetic drive source is changed as the camera posture changes. This is done in order to insure that the speed of movement of the shutter blades is maintained constant regardless of whether or not the camera is positioned normally, or upside down.
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