Seiko Precision Inc.

Mitsuru Suzuki

Hiroshi Takahashi

Minori Murata

Makoto Toriumi

Seiichi Oishi

Akihiro Ito

Akira Yasuda

Shoichi Tokura

Shigeru Yanagisawa

A focal plane shutter includes: a board including an opening; a leading blade and a trailing blade opening and closing the opening; a trailing blade actuator driving the trailing blade; a drive member driving the trailing blade by receiving driving force of the trailing blade actuator; and a buffering member abutting with the drive member in a state where the trailing blade recedes away from the opening, wherein the trailing blade actuator causes the drive member to move away from the buffering member from an abutting state therewith and to abut therewith again in a charging operation, and then starts an exposure operation.

Focal plane shutter and optical apparatus provided with same

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.

Focal plane shutter, imaging device and digital camera

A blade-driving device includes: a board including an opening; a blade opening and closing the opening; an arm driving the blade and made of a synthetic resin; a drive member driving the arm; and a reinforcement member formed with a laser welding mark indicating a mark formed by laser welding the reinforcement member and the arm together, and made of a synthetic resin.

Blade-driving device, optical device, and method for producing arm

A focal-plane shutter includes: first, second, and third boards each including an opening and arranged in an optical axis direction passing through the openings; a first blade arranged between the first and second boards and capable of opening and closing the openings; a second blade arranged between the second and third boards and capable of opening and closing the openings; first and second arms arranged between the second and third boards, connected to the second blade, made of synthetic resins, and capable of rotating about respective different fulcrums; and a drive member connected to the first arm and driving the first arm.

Focal-plane shutter and optical device

A focal-plane shutter includes: a board including an opening; a blade opening and closing the opening; a rotor of an actuator for driving the blade; an output member rotated by the rotor and including a first gear portion; a drive member including a second gear portion meshing with the first gear portion, rotating about a predetermined axis, and driving the blade; and a positioning portion abutting with the drive member and defining an end of a rotational range of the drive member, wherein the first and second gear portions and the positioning portion overlap one another in a plane direction perpendicular to the axis.

A blade drive device includes: a board including an opening; a blade movable between a position receding from the opening and a position covering at least a portion of the opening; a first actuator including a first rotor rotatable about a first axis and a first stator, and being capable of driving the blade; a second actuator including a second rotor rotatable about a second axis and a second stator, and being capable of driving the blade; first and second positioning portions respectively positioning the first and second actuators; and a first biasing member respectively biasing the first and second actuators toward the first and second positioning portions.

Blade drive device and optical instrument

An electromagnetic actuator includes: a coil for excitation; a stator excited with different magnetic poles by energization of the coil; a rotor magnetized with the different magnetic poles in accordance with a circumferential direction, and rotated by a magnetic force generating between the rotor and the stator; and an outputting member rotated in conjunction with the rotor and outputting rotational movement of the rotor to a first blade and a second blade. The outputting member is provided with a fitting hole press-fitted onto the rotor.

Actuator and blade drive device for camera

A blade drive device according to a first embodiment includes: a board including an opening and a slide slot; a blade for adjusting an opening amount of the opening; and a transmitting member for transmitting a drive force from an electromagnetic actuator to the blade through the slide slot. The transmitting member includes: an arm member revolving; and an engagement member sliding in contact with an inner surface of the slide slot in conjunction with a revolving of the arm member, and being brought into pressure contact with the inner surface of the slide slot by an external impact.

Blade drive device and optical equipment

A blade drive device includes: a board having an opening; a blade for adjusting an amount of the opening; and first and second drive rings having a support structure for commonly supporting the blade for swinging, rotating in an identical direction with a given speed difference, and being arranged in a same plane.

Blade drive device and optical device

A coil bobbin includes: a body portion around which a coil is wound and having a cylindrical shape; a pair of flange portions formed at both ends of the body portion respectively; and terminal portions which are formed in the pair of flange portions, respectively, the terminal portions being around which respective ends of the coil are wound. The pair of flange portions have thicker portions and thinner portions, respectively, different from each other in thickness. The pair of flange portions is formed to gradually reduce a thickness from the thicker portions toward the thinner portions, respectively. The terminal portions are formed in the thicker portions, respectively.

Coil bobbin, actuator, and blade drive device for camera

In a shutter drive device for a camera, the device including: a plate having an aperture; a shutter blade provided in the plate, and for opening and closing the aperture; and an driving source provided in the plate, and for driving the shutter blade. The driving source includes: a rotor magnetized with plural magnetic poles in a circumferential direction, and rotatable about an axis thereof; a stator generating magnetic force against the rotor; and a coil provided in the stator and for exciting the stator. The rotor has an arm portion extending outwardly in a direction perpendicular to the axis of the rotor, and a pin portion engaging with the shutter blade and provided in the arm portion to stand. The rotor, the arm portion and the pin portion are disposed within a thickness of the coil in the axis direction.

Growing community of inventors

Narashino, Japan

Mitsuru Suzuki