公开(公告)号：US20170131619A1

公开(公告)日：2017-05-11

申请号：US15287060

申请日：2016-10-06

Applicant: SEIKO Precision Inc.

Inventor： Shoichi TOKURA

IPC: G03B9/32

CPC classification number: G03B9/42

Abstract: A focal-plane shutter capable of stabilizing a curtain in continuous photographing action for suppression of variation in light exposure period is provided. The focal-plane shutter includes a base plate having a first opening, a blade receiving plate so arranged as to face the base plate and having a second opening formed in a position corresponding to the first opening, and a rear curtain that is arranged between the base plate and the blade receiving plate and moves between an open position where the first opening and the second opening are open and a closed position where the first opening and the second opening are closed to open and close the first opening and the second opening. The blade receiving plate has a protruding section in a position where the blade receiving plate overlaps with the rear curtain located in the open position when viewed along the optical axis direction, and the protruding section so protrudes toward the rear curtain as to allow the rear curtain to come into contact with the protruding section.

公开(公告)号：US20170052428A1

公开(公告)日：2017-02-23

申请号：US15227478

申请日：2016-08-03

Applicant: SEIKO Precision Inc.

Inventor： Shoichi TOKURA ,  Seiichi OISHI

IPC: G03B9/40 ,  G02B27/00

CPC classification number: G03B9/40 ,  G02B27/0006

Abstract: A focal-plane shutter capable of suppressing production of foreign matter is provided. The focal-plane shutter includes a base plate, rear curtain drive arms, a blade that is driven by the rear curtain drive arms, and an elastically deformable cushioning member that comes into contact with the blade that moves from a retracted position to an unfolded position. The blade extends in a first direction. The rear curtain drive arms are swingable around the centers of swing motion provided on one side of the blade in the first direction. The cushioning member has a contact section that comes into contact with a side edge of the blade, a holding section that is arranged on the side opposite the blade with the contact section therebetween, and a connecting section that connects the contact section and the holding section to each other. The connecting section inclines with respect to a second direction perpendicular to the first direction and extends toward the centers of swing motion.

Abstract translation: 提供了能够抑制异物产生的焦平面快门。 焦平面快门包括基板，后帘驱动臂，由后帘驱动臂驱动的叶片，以及可弹性变形的缓冲构件，其与从缩回位置移动到展开位置的叶片接触 。 叶片沿第一方向延伸。 后帘驱动臂可绕第一方向在叶片一侧提供的摆动中心摆动。 所述缓冲部件具有与所述刀片的侧缘接触的接触部，与所述刀片的与所述刀片相对的一侧配置的保持部，以及连接所述接触部和所述保持部的连接部 对彼此。 连接部分相对于垂直于第一方向的第二方向倾斜并朝向摆动中心延伸。

公开(公告)号：US20170045801A1

公开(公告)日：2017-02-16

申请号：US15221145

申请日：2016-07-27

Applicant: SEIKO Precision Inc.

Inventor： Seiichi OISHI ,  Shoichi TOKURA

IPC: G03B9/36

CPC classification number: G03B9/36 ,  G03B9/42

Abstract: A focal-plane shutter capable of preventing deterioration of the quality of a captured image is provided. A focal-plane shutter includes a base plate having an opening, a rear curtain that moves between an open position where the opening is open and a closed position where the opening is closed to allow the opening to be open and closed, and a first cushioning member that comes into contact with the rear curtain, and the rear curtain has a first protrusion that is located outside the opening, protrudes in a first direction from the open position toward the closed position, and comes into contact with the first cushioning member when the rear curtain moves from the open position to the closed position.

Abstract translation: 提供一种能够防止拍摄图像的质量劣化的焦平面快门。 焦平面快门包括具有开口的基板，在所述开口打开的打开位置和所述开口闭合的关闭位置之间移动以允许所述开口打开和关闭的后帘，以及第一缓冲 与后帘接触的构件，后帘具有位于开口外侧的第一突起，从打开位置朝向关闭位置从第一方向突出，并且当第一缓冲构件与第一缓冲构件接触时， 后帘从打开位置移动到关闭位置。

公开(公告)号：US20150268533A1

公开(公告)日：2015-09-24

申请号：US14626014

申请日：2015-02-19

Applicant: SEIKO PRECISION INC.

Inventor： Seiichi OISHII ,  Shoichi TOKURA

IPC: G03B9/40

CPC classification number: G03B9/40 ,  G03B9/36

Abstract: A focal plane shutter includes: a first board including a first opening; a first shutter including plural first blades, and facing the first board and closing the first opening such that an overlapped state where the plural first blades overlap each other is shifted to an expanded state where the plural first blades expand; and a drive member connected to a root portion of the first shutter and causing the first shutter to move.

Abstract translation: 焦平面快门包括：第一板，包括第一开口; 第一挡板，其包括多个第一叶片，并且面向第一板并且关闭第一开口，使得多个第一叶片彼此重叠的重叠状态转移到多个第一叶片膨胀的展开状态; 以及驱动构件，其连接到所述第一活门的根部并使所述第一活门移动。

公开(公告)号：US20150253646A1

公开(公告)日：2015-09-10

申请号：US14621705

申请日：2015-02-13

Applicant: SEIKO PRECISION INC.

Inventor： Seiichi OISHII ,  Shoichi TOKURA

IPC: G03B9/42

CPC classification number: G03B9/42

Abstract: A focal plane shutter includes: a board including an opening; blades opening and closing the opening; an electromagnet supported by the board; a drive lever adsorbed to and held by the electromagnet, and swingably supported by the board; a drive arm connected to the drive lever, swingably supported by the board, and driving the blades; a first biasing member always biasing the drive lever away from the electromagnet and moving the blades; a first adjusting member that stepwisely adjusts a biasing force of the first biasing member; a second biasing member always biasing the drive arm in a direction opposite to a biasing direction of the first biasing member to such an extent that the blades are moved in accordance with the biasing force of the first biasing member; and a second adjusting member that steplessly adjusts a biasing force of the second biasing member.

Abstract translation: 焦平面快门包括：包括开口的板; 刀片打开和关闭开口; 由电路板支撑的电磁体; 吸附到电磁体并由电磁体保持的驱动杆，并由该板可摆动地支撑; 连接到所述驱动杆的驱动臂，由所述板可摆动地支撑并驱动所述叶片; 第一偏置构件总是将驱动杆偏置远离电磁体并移动叶片; 第一调节构件，其逐步地调节第一偏置构件的偏置力; 第二偏置构件总是以与第一偏压构件的偏压方向相反的方向偏压驱动臂，使得叶片根据第一施力构件的作用力而移动; 以及第二调节构件，其无级调节所述第二施力构件的偏置力。

公开(公告)号：US20140286632A1

公开(公告)日：2014-09-25

申请号：US14175280

申请日：2014-02-07

Applicant: SEIKO PRECISION INC.

Inventor： Seiichi OISHI ,  Shoichi TOKURA

IPC: G03B9/08

CPC classification number: G03B9/36

Abstract: A focal plane shutter includes: a board including an opening; a blade opening or closing the opening; an electromagnet including an iron core and a coil for energizing the iron core; and a drive lever holding an iron piece capable of being adsorbed to the iron core, capable of moving such that iron piece is moved into and away from the iron core, and driving the blade, wherein a plating process is performed on the iron core and the iron piece, a Vickers hardness of a plating of the iron piece is greater than that of a plating of the iron core, and a difference in the Vickers hardness between the plating of the iron piece and the plating of the iron core is 100 HV or more.

Abstract translation: 焦平面快门包括：包括开口的板; 打开或关闭开口的刀片; 包括铁芯和用于激励铁芯的线圈的电磁体; 以及驱动杆，其保持能够被吸附到铁芯上的铁片，能够移动以使铁片移入和离开铁芯，并驱动该刀片，其中对铁芯进行电镀处理， 铁片，铁片的电镀的维氏硬度大于铁芯电镀的维氏硬度，并且铁片的镀层与铁芯的镀层之间的维氏硬度差为100HV 或者更多。

公开(公告)号：US20140010526A1

公开(公告)日：2014-01-09

申请号：US14023734

申请日：2013-09-11

Applicant: SEIKO PRECISION INC.

Inventor： Hiroshi TAKAHASHI ,  Minori MURATA ,  Chiaki NEMOTO ,  Shoichi TOKURA

IPC: G03B9/10

CPC classification number: G03B9/10 ,  G03B9/42

Abstract: A focal plane shutter includes: a board including an opening; a leading blade and a trailing blade opening and closing the opening; first and second drive members respectively driving the leading blade and the trailing blade; first and second actuators respectively driving the first and second drive members; a first biasing member biasing the first drive member to move the leading blade away from the opening; and a second biasing member biasing the second drive member to move the trailing blade away from the opening.

Abstract translation: 焦平面快门包括：包括开口的板; 前刀片和后刀片，打开和关闭开口; 第一和第二驱动构件分别驱动前刀片和后刀片; 分别驱动第一和第二驱动构件的第一和第二致动器; 偏置所述第一驱动构件以使所述前刀片远离所述开口的第一偏置构件; 以及偏置所述第二驱动构件以使所述后叶片远离所述开口移动的第二偏置构件。