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| Number | Title | Issue Date |
| 7775728 | Focal plane shutter for cameras A focal plane shutter for cameras includes: a shutter blade assembly; an electromagnet assembly; driving means that includes a mounting member mounted with an iron scrap member that cooperates with an iron core member of the electromagnet assembly; and a setting mem... | 08/17/2010 |
| 7380999 | Shutter device and image pick up apparatus A shutter device, which is capable of achieving power-saving when holding a shutter opening in an open state for a long time by mechanically inhibiting an operation of a second light shielding plate in a direction to close the shutter opening, is provided. The shutt... | 06/03/2008 |
| 7344321 | Shutter device and image-capturing apparatus A shutter device includes a first light-blocking unit; a second light-blocking unit; a supporting member; and a charging member. The shutter device has a simple structure that does not require a designated interlocking mechanism between the shutter device and an ext... | 03/18/2008 |
| 7178998 | Focal plane shutter for digital still cameras A drive member attached to the output shaft of a DC motor placed on a shutter base board includes a drive pin connected to the arm of a shutter blade within a blade chamber for driving the shutter blade to open and close an exposure opening with the reciprocal rotat... | 02/20/2007 |
| 7140790 | Sector drive assembly for camera A sector drive assembly for a camera which can open and close an aperture has a sector drive unit having an actuator, a drive force transmitting mechanism, and a sector position detecting unit that are removably mounted as a unit to a support plate, and a sector uni... | 11/28/2006 |
| 7104708 | Sector drive unit for camera A sector drive unit for a camera includes sectors capable of opening and closing an aperture provided on a base plate. A first actuator drives the sectors to open and close the aperture, and a drive force transmitting mechanism transmits a driving force of the first... | 09/12/2006 |
| 7070343 | Sector drive assembly for camera A sector drive assembly for a camera with reduced power consumption has a base plate having an aperture, one or more sectors capable of opening and closing the aperture, an electromagnetic actuator for driving the sectors, a drive force transmitting mechanism for tr... | 07/04/2006 |
| 6536962 | Focal-plane shutter for digital still cameras A focal-plane shutter for digital still cameras includes a first blade covering an exposure aperture only immediately before an exposure operation is performed; a driving member for the first blade having an iron piece member, actuated in an exposure oper... | 03/25/2003 |
| 5984537 | Method and apparatus for preventing the deviation of a focal plane shutter blade An apparatus and a method for preventing the deviation of a focal plane shutter are disclosed. The apparatus has a back cover switch, a control unit and a shutter driver. The apparatus and method prevents the deviation of the focal plane shutter blade by ... | 11/16/1999 |
| 5940640 | Shutter device and camera equipped with the same A shutter device having a first light blocking structure arranged to initiate an exposure and a second light blocking structure arranged to terminate the exposure, includes a first energy storage element arranged to store electric energy for causing the f... | 08/17/1999 |
| 5887205 | Apparatus and method for magnetically recording photographic data for an advanced photo system camera An apparatus for magnetically recording photographic data for an advanced photo system camera comprises a film transport sensing unit for sensing perforations in a film and for generating a signal per each perforation, an operation control unit for contro... | 03/23/1999 |
| 4994834 | Focal plane shutter for cameras The forcal plane shutter for cameras is equipped with a first release lever capable of retaining a rear blade group at position to close an exposure aperture, and a second release lever capable of maintaining a front blade group and the rear blade group a... | 02/19/1991 |
| 4671637 | Electromagnetically controlled shutter for camera A shutter for camera having a shutter controlling mechanism including an armature and an electromagnet in which starting of operation of a shutter-curtain is controlled by operation of separating the armature from the electromagnet, which includes an arma... | 06/09/1987 |
| 4487492 | Electromagnetically controlled shutter An electromagnetically controlled shutter with a latch member held in an active position by an electromagnet containing a permanent magnet and operating upon de-magnetization of the electromagnet to release the shutter. To prevent reduction of the attract... | 12/11/1984 |
| 4480900 | Camera shutter with a pair of sector drive rings A plurality of sectors start opening in response to operation of a sector opening drive ring, and upon elaspe of a predetermined interval of time to provide a desired exposure time, a sector closing drive ring is released to permit the sectors to start op... | 11/06/1984 |
| 4464032 | Exposure time control device An exposure time control device includes electromagnets for causing corresponding leading and trailing shutter curtains in a camera to travel. A second timer circuit, which is adjustable, is arranged to count a correction time in response to operation of ... | 08/07/1984 |
| 4410256 | Electric shutter device having a reciprocating shutter charging member In order to utilize the advantage of compactness of the current-attraction type solenoid devices and the advantage of two-solenoid electric shutter of being easily linked with other mechanisms, the electric shutter has such a structure that a reciprocatin... | 10/18/1983 |
| 4408856 | Device for locking a blade driver in an electronic shutter A shutter blade is actuatable by a driver which can be locked in a shutter setting position by a locking lever assembly comprising a first lever having a bent end engageable with the driver and a second lever having an iron member attractable by an electr... | 10/11/1983 |
| 4394081 | Magnetically controlled shutter 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. T... | 07/19/1983 |
| 4378150 | Electromagnetically driven shutter In an electromagnetically driven focal plane shutter of the type having a trailing screen which moves irrespective as to whether a leading screen is moving, there are provided a detecting member arranged to detect movement of the leading screen and an inh... | 03/29/1983 |
| 4364654 | Electromagnetic release shutter In a shutter of the electromagnetic release type arranged to have shutter blades locked by locking members in their charged states and to make an exposure by releasing the shutter blades from the locking members, a first locking member is arranged to lock... | 12/21/1982 |
| 4268152 | Bulb photography control system for camera A control system for a camera controls a shutter release operation electromagnetically. A signal generating circuit produces a switching signal for operating a switching circuit which supplies current to a control circuit for a camera. The signal generati... | 05/19/1981 |
| 4264176 | Exposure control device for camera A device for preventing erroneous operation of a camera is disclosed. The device includes an electromagnet for closing the camera shutter. Current supply apparatus supplies current to the electromagnet. A detection device is employed for detecting whether... | 04/28/1981 |
| 4183646 | Electrical shutter of electromagnetic release type for camera An electrical shutter includes a locating member which maintains a shutter drive member at rest at its start position and which is constrained in abutment against the drive member in conjunction with a charging member, which rotates in response to a film ... | 01/15/1980 |
| 4129370 | Controlling circuit for electric shutters A controlling circuit for electric shutters comprising at least one constant current circuit, a pair of capacitors to be charged in advance by a current source battery through the constant current circuit and a pair of driving coils to be energized in tur... | 12/12/1978 |
| 3971053 | Electromagnetic trigger device for use with camera capable of automatic time exposure An electromagnetic trigger device for use with camera capable of automatic time exposure, comprises: a power supply; a motor; a trigger switch; shutter driving means driven by said motor for driving a shutter and movable between a fully closed position an... | 07/20/1976 |
| 3964080 | Electromagnetic trigger device in a camera capable of effecting time photography In an electromagnetic trigger device in a camera capable of effecting time photography, and having a trigger switch, a power source and a motor for driving a shutter driving mechanism, there is provided a restraining lever movable between a restraining po... | 06/15/1976 |
