公开(公告)号：US10165193B2

公开(公告)日：2018-12-25

申请号：US15062770

申请日：2016-03-07

Applicant: SEIKO PRECISION INC.

Inventor： Seiichi Oishi ,  Minori Murata ,  Motoharu Sakurai ,  Akira Ito

IPC: H04N5/232 ,  H04N5/225 ,  G03B9/36 ,  G03B9/62 ,  H04N5/235

Abstract: An image pickup device includes: an image pickup element; a board including an opening through which light entering the image pickup element passes; a shutter opening and closing the opening; an actuator driving the shutter, and including: a rotor; a stator; and first and second coils wound around the stator and not electrically connected to each other; and a drive circuit including plural terminal portions to which the first and second coils are individually connected.

公开(公告)号：US10101635B2

公开(公告)日：2018-10-16

申请号：US15050954

申请日：2016-02-23

Applicant: SEIKO Precision Inc.

Inventor： Seiichi Oishi ,  Shoichi Tokura

IPC: G03B9/58 ,  G03B9/42

Abstract: To provide a blade drive device capable of suppressing variations in movement speed of blades at the time of continuous operation and shortening the operation interval of blades. A blade drive device 10 includes a bed plate 11 having an opening 12, a blade receiving plate 15 arranged so as to face the bed plate 11, a plurality of blades 31b to 34b provided between the bed plate 11 and the blade receiving plate 15, which are expanded in a state where the opening 12 is closed and are housed while overlapping one another in a state where the opening 12 is opened and a regulating member 80 having an abutting surface 82 on which side edge portions 31b1 to 34b1 of the blades 31b to 34b abut when the blades are housed. The abutting surface 82 is an inclined surface 83 inclined to the bed plate 11 side as it goes from the bed plate 11 side to the blade receiving plate 15 side.

公开(公告)号：US09304374B2

公开(公告)日：2016-04-05

申请号：US14862420

申请日：2015-09-23

Applicant: SEIKO PRECISION INC.

Inventor： Seiichi Oishi ,  Minori Murata ,  Shoichi Tokura ,  Hiroshi Takahashi

IPC: G03B9/40

CPC classification number: G03B9/40

Abstract: A focal-plane shutter includes: a mechanical portion including: a board including an opening; and a leading blade and a trailing blade capable of opening and closing the opening; and a leading blade actuator and a trailing blade actuator respectively driving the leading blade and the trailing blade, and respectively including a leading blade coil and a trailing blade coil, wherein a current value flowing through at least one of the leading blade coil and the trailing blade coil is adjusted such that one of variations in a leading blade run-up period and a trailing blade run-up period depending on a temperature change corresponds to the other one.

Abstract translation: 焦平面快门包括：机械部分，包括：包括开口的板; 以及能够打开和关闭开口的前刀片和后刀片; 以及分别驱动前刀片和后刀片并分别包括前刀片线圈和后刀片线圈的前刀片致动器和后刀片致动器，其中流过至少一个前刀片线圈和尾随刀片线圈的电流值 叶片线圈被调整为使得根据温度变化的前刀片起动时段和后刀片起动时间段中的一个变化对应于另一个。