公开(公告)号：US20160216593A1

公开(公告)日：2016-07-28

申请号：US15088589

申请日：2016-04-01

Applicant: SEIKO PRECISION INC.

Inventor： Seiichi OISHI ,  Hiroshi TAKAHASHI ,  Shoichi TOKURA

IPC: G03B9/40

CPC classification number: G03B9/40 ,  G03B9/42

Abstract: A focal-plane shutter includes: a board including an opening; a shutter opening and closing the opening; a drive lever provided with a drive pin and swinging; a drive arm provided with an engagement hole engaged with the drive pin, swinging about a center same as a swing center of the drive lever, driving the shutter, and made of a synthetic resin; and a restriction portion defining a swinging range of the drive lever.

Abstract translation: 焦平面快门包括：包括开口的板; 打开和关闭开口的快门; 驱动杆，设有驱动销并摆动; 驱动臂，其设置有与驱动销接合的接合孔，围绕与驱动杆的摆动中心相同的中心摆动，驱动闸门，并由合成树脂制成; 以及限定驱动杆的摆动范围的限制部。

公开(公告)号：US20140376904A1

公开(公告)日：2014-12-25

申请号：US14291717

申请日：2014-05-30

Applicant: SEIKO PRECISION INC.

Inventor： Seiichi OISHI ,  Minori MURATA ,  Hiroshi TAKAHASHI ,  Shoichi TOKURA

IPC: G03B9/40

CPC classification number: G03B9/40

Abstract: A focal plane shutter includes: a board including an opening; a shutter opening and closing the opening; a drive source driving the shutter; a drive lever driven by the drive source; a drive arm connected to the drive lever and driving the shutter; a restriction portion defining a stop position of the drive lever; and a buffering member elastically deformable, wherein, when the drive lever drives, abuts the restriction portion, and stops, at least one of the drive arm and the shutter temporarily abuts the buffering member, is spaced from the buffering member, and stops.

Abstract translation: 焦平面快门包括：包括开口的板; 打开和关闭开口的快门; 驱动快门的驱动源; 由驱动源驱动的驱动杆; 连接到所述驱动杆并驱动所述活门的驱动臂; 限定部分限定驱动杆的停止位置; 以及可弹性变形的缓冲构件，其中，当所述驱动杆驱动时，所述驱动杆与所述限制部抵接并停止，所述驱动臂和所述闸板中的至少一个暂时抵靠所述缓冲构件，与所述缓冲构件间隔开并停止。

公开(公告)号：US20140320737A1

公开(公告)日：2014-10-30

申请号：US14325716

申请日：2014-07-08

Applicant: Seiko Precision Inc.

Inventor： Hiroshi TAKAHASHI ,  Minori MURATA ,  Seiichi OISHI ,  Mitsuru SUZUKI

IPC: G03B9/14 ,  H04N5/238

CPC classification number: G03B9/14 ,  G03B9/36 ,  H04N5/238

Abstract: A focal plane shutter includes: a board including an opening; a leading shutter and a trailing shutter opening and closing the opening; first and second biasing members respectively biasing the leading shutter and the trailing shutter to move away from the opening; a first actuator causing the leading shutter to move from a position to close the opening to a position to recede from the opening while the leading shutter is assisted by a biasing force of the first biasing member in an exposure operation; and a second actuator causing the trailing shutter to move from a position to recede from the opening to a position to close the opening against a biasing force of the second biasing member in the exposure operation, wherein drive torque of the first actuator is smaller than that of the second actuator.

Abstract translation: 焦平面快门包括：包括开口的板; 前挡板和后挡板打开和关闭开口; 第一和第二偏置构件分别偏压前挡板和后挡板以远离开口移动; 所述第一致动器使得所述前挡板从位置移动以将所述开口闭合到从所述开口退出的位置，同时在所述曝光操作中所述第一偏压构件的偏置力辅助所述前挡板; 以及第二致动器，其使所述后挡板从所述开口的位置移动到抵抗所述第二偏压构件在所述曝光操作中的偏置力而关闭所述开口的位置，其中所述第一致动器的驱动转矩小于 的第二致动器。