Seiko Precision Inc.

Kyoritsu Seiyaku Corproration

Seiko Precision Circuits Inc.

Yoichi Nakano

Hiroshi Takahashi

Chiaki Nemoto

Shoichi Tokura

Motoharu Sakurai

Akira Ito

Miyoshi Tanikawa

Hajime Oda

Hideki Tanaka

Makoto Mikami

Yasutoshi Chiba

Kenichi Kudou

Masao Fujiwara

There is provided a blade drive device including a substrate that has an opening, a front curtain and a rear curtain that are movable along an opening surface of the opening so as to open and close the opening, a front curtain locking portion that interlocks with opening and closing operations of the front curtain, a rear curtain locking portion that interlocks with opening and closing operations of the rear curtain, and a regulation lever that is configured to be pivotally movable around a lever axis, and that is capable of entry and escape between an entry position which enters each operation trajectory of the front curtain locking portion and the rear curtain locking portion in response to the opening and closing operations of the front curtain and the rear curtain and an escape position escaped from the operation trajectory. The regulation lever has a front curtain regulation portion which can be locked by the front curtain locking portion from one side around the lever axis at the entry position so as to regulate movement of the front curtain in a closing direction, and a rear curtain regulation portion which can be locked by the rear curtain locking portion from the other side around the lever axis at the entry position so as to regulate movement of the rear curtain in a closing direction.

Blade drive device and optical instrument

An imaging apparatus is provided, including a blade-driving device and a driving control unit which drives the front curtain actuator and the rear curtain actuator. The front curtain and the rear curtain are positioned at the open position at a time of start and termination of imaging, in which the front curtain moves from the closing position to the open position, and the rear curtain moves from the open position to the closing position, thereby performing an exposure operation. During consecutive photographing, the front curtain positioned at the closing position is moved once in a direction of the open position and is then returned to the closing position after the rear curtain is moved to the open position after termination of the exposure operation, and before a subsequent exposure operation is performed.

Imaging apparatus and blade-driving device

There is provided a blade drive device including a substrate that has an opening, a front curtain and a rear curtain that are movable along an opening surface of the opening so as to open and close the opening, a front curtain electromagnetic actuator that actuates the front curtain, a rear curtain electromagnetic actuator that actuates the rear curtain, and that is capable of holding the rear curtain at an open position in a state having no power supply, a front curtain locking portion that interlocks with opening and closing operations of the front curtain, a rear curtain locking portion that interlocks with opening and closing operations of the rear curtain, and a blade position holding mechanism that is capable of entry and escape between an entry position which enters each operation trajectory of the front curtain locking portion and the rear curtain locking portion in response to the opening and closing operations of the front curtain and the rear curtain and an escape position escaped from the operation trajectory. At the entry position, the blade position holding mechanism can engage with both the front curtain locking portion and the rear curtain locking portion, thereby regulating the movement of the front curtain and the rear curtain in the closing direction.

There are provided a blade drive device and an optical instrument. The blade drive device includes a substrate that has an opening, a front curtain and a rear curtain that are movable along an opening surface of the opening so as to open and close the opening, a front curtain locking portion that interlocks with opening and closing operations of the front curtain, a rear curtain locking portion that interlocks with opening and closing operations of the rear curtain, a regulation lever that is configured to be pivotally movable around a lever axis, that enters an operation trajectory of the front curtain locking portion and the rear curtain locking portion, and that is capable of entry and escape between an entry position for regulating the movement of the front curtain and the rear curtain in a closing direction and an escape position escaped from the operation trajectory, a regulation electromagnetic actuator that is configured to be rotatable around a regulation axis, and a linkage lever that causes the regulation lever to pivot around the lever axis in response to the rotation around the regulation axis of the regulation electromagnetic actuator. The regulation lever and the linkage lever engage with each other while being provided with play in a circumferential direction around the regulation axis.

An imaging device includes: an image pickup element; a focal plane shutter including: a board including an opening exposing the image pickup element; a leading shutter and a trailing shutter movable between a closed position to close the opening and an opened position to open the opening; and a leading shutter actuator and a trailing shutter actuator respectively driving the leading shutter and the trailing shutter, a drive control portion that drives the leading shutter actuator and the trailing shutter actuator; and a control portion that controls the image pickup element.

Imaging device and focal plane shutter

An image pickup device includes: a focal plane shutter including: a board including an opening; a shutter moving to open and close the opening; an actuator moving the shutter; and a detection portion detecting that the shutter passes through a predetermined position, an image pickup element which light enters through the opening; and a drive control portion that controls the actuator to move the shutter, wherein the drive control portion performs movement control to move the shutter at least until the shutter passes through the predetermined position, and performs brake control to decelerate the shutter while the shutter is moving after the shutter passes through the predetermined position.

Image pickup device and focal plane shutter

A blade drive device includes: a board including an opening; first and second blades opening and closing the opening; and first and second actuators arranged adjacent to each other and respectively driving the first and second blades, wherein the first and second actuators respectively include first and second stators, first and second rotors, and first and second coils, and the first and second rotors is arranged to sandwich at least one of the first and second coils.

A blade driving device according to the present invention includes: a substrate having an aperture; a first blade and a second blade which open and close the aperture; a first driving member which drives the first blade; a second driving member which drives the second blade; a first actuator which operates the first driving member; and a second actuator which operates the second driving member, wherein the first actuator and the second actuator extend along a first direction which intersects an axial direction of the aperture on a primary surface of the substrate and are arranged in a second direction which intersects the axial direction and the first direction.

Blade driving device and optical apparatus

A blade drive device includes: a board including an opening; first and second blades opening and closing the opening; and first and second actuators respectively driving the first and second blades, wherein the first and second actuators respectively include first and second stators, first and second rotors, and first and second coils, and respectively drive the first and second blades through first and second drive members, the first drive member is arranged to overlap the first stator and the first coil in an optical axis direction, and the second drive member is arranged to overlap the second stator and the second coil in the optical axis direction.

An image pickup device includes: an image pickup element; a control portion artificially driving an electronic leading blade by resetting stored charges of the image pickup element in a predetermined direction at every pixel line; and a focal plane shutter includes a board including an opening exposing the image pickup element, a mechanical trailing blade capable of opening and closing the opening, a trailing blade drive lever driving the trailing blade, an actuator actuating the trailing blade drive lever, a shading member capable of opening and closing at least a part of the opening, a shading member drive lever driving the shading member, a connection member provided on the shading member drive lever, and a biasing member biasing the shading member drive lever such that the shading member recedes from the opening.

An image pickup device includes: a focal plane shutter including: a board including an opening; a leading shutter and a trailing shutter moving to open and close the opening; a leading-shutter actuator and a trailing-shutter actuator respectively causing the leading shutter and the trailing shutter to move; a leading-shutter sensor detecting that the leading shutter passes through a first position; and a trailing-shutter sensor detecting that the trailing shutter passes through a second position, an image pickup element that light enters through the opening; and a drive control portion.

An image pickup device includes: an image pickup element; a control portion sequentially resetting charge stored in the image pickup element for every pixel line in a predetermined direction such that an electronic leading blade moves in a simulated manner; and a focal plane shutter.

A waste storage device includes a waste storage part for storing a waste item and a packaging device arranged in an upper part of the waste storage part. The packaging device includes two film feed rollers, two waste sealing rollers which pull out films and are arranged in parallel that the peripheral surfaces thereof are in contact via the pulled out respective films in a normal state and at least one of which has the peripheral surface that is elastically deformed along the shape of the waste item, and a driving part which rotates the rollers. Two friction rollers which are driven and rotated to sandwich the films sealing the waste item having passed between the waste sealing rollers and pull them downward are provided below the waste sealing rollers. The device prevents a waste item sealed with resin films from being caught in rollers such as waste sealing rollers.

Packaging device for waste storage device and waste storage device

A blade speed adjustable mechanism includes: a board having an opening; a shutter blade opening or closing the opening; a drive lever supported by the board and bringing the shutter blade into an overlapped operation or an expanded operation; a biasing member engaging the drive lever and biasing the shutter blade in an overlapped direction or in an expanded direction; a ratchet member engaging the biasing member and having ratchet teeth; an engagement member holding the ratchet member at a desired stop position and adjusting an biasing force of the biasing member by changing the stop position. The engagement member has a plurality of pawl portions different from each other in length. The pawl portion engages the ratchet tooth to hold the ratchet member at the stop position. A difference in length between the pawl portions is shorter than a distance corresponding to a pitch of the ratchet teeth.

Blade speed adjustable mechanism and focal plane shutter having the same

A focal plane shutter includes: a board including an opening; blades capable of opening and closing the opening; a drive lever swingably supported, holding a movable iron piece and driving the blades; a self-holding type solenoid capable of adsorbing to the movable iron piece by a given attraction force in a non-energized state, and reducing the given attraction force in an energized state; a biasing member biasing the drive lever to move the drive lever away from the self-holding type solenoid; and a set member moving the drive lever to abut the drive lever with the self-holding type solenoid, wherein the self-holding type solenoid is energized to reduce the given attraction force when the drive lever is swung by the set member to abut the movable iron piece with the self-holding type solenoid.

Growing community of inventors

Narashino, Japan

Yoichi Nakano