Patents Assigned to Seiko Precision Inc.
  • Blade drive device
    Patent number: 8348528
    Abstract: A blade drive device includes: a blade; a drive source that drives the blade; and a chassis that has an opening opened and closed by a driving of the blade, and that houses the blade and the drive source. The drive source includes: a rotor that is rotatably supported; and a stator around which a coil for excitation is wound and which applies a rotational force to the rotor. The stator is formed along an inner side surface of the chassis and has a rectangular shape.
    Type: Grant
    Filed: October 30, 2009
    Date of Patent: January 8, 2013
    Assignee: Seiko Precision Inc.
    Inventors: Koichi Masuzawa, Kenichi Kudo
  • BLADE DRIVE DEVICE AND OPTICAL EQUIPMENT
    Publication number: 20130003156
    Abstract: A blade drive device includes: a board including an opening; a first blade movable toward and away from the opening, and including: a first slot; and first and second aperture openings each of which is smaller than the opening; a second blade movable toward and away from the opening and including a second slot; a first drive member including a first drive pin that engages the first slot and that is rotatable about a predetermined position; and a second drive member including a second drive pin that engages the second slot and that is rotatable about a predetermined position.
    Type: Application
    Filed: September 14, 2012
    Publication date: January 3, 2013
    Applicant: SEIKO PRECISION INC.
    Inventor: Motoharu SAKURAI
  • FOCAL-PLANE SHUTTER AND OPTICAL EQUIPMENT
    Publication number: 20120328280
    Abstract: A focal-plane shutter includes: a board including an opening; a leading blade and a trailing blade; a trailing blade lever; a first lever; a second lever; a self-holding type solenoid; a leading blade electromagnet and a trailing blade electromagnet; and a set lever.
    Type: Application
    Filed: September 10, 2012
    Publication date: December 27, 2012
    Applicant: SEIKO PRECISION INC.
    Inventors: Yoichi NAKANO, Hideki TANAKA
  • Focal plane shutter and optical device
    Patent number: 8313256
    Abstract: A focal plane shutter includes: an electromagnet; a board including an opening; a blade movable between a position where the blade recedes from the opening and a position where the blade covers at least part of the opening; and a drive lever driving the blade, and including: a spindle portion provided at its one end with a flange portion; an iron piece provided at the other end of the spindle portion and capable of being adsorbed to the electromagnet; a support portion including a through hole through which the spindle portion penetrates with a play; and a guide portion provided along the iron piece.
    Type: Grant
    Filed: September 16, 2011
    Date of Patent: November 20, 2012
    Assignee: Seiko Precision Inc.
    Inventors: Hiroshi Takahashi, Seiichi Oishi
  • Image pickup apparatus with impact resistance
    Patent number: 8314878
    Abstract: An image pickup apparatus includes: an image pickup substrate on which an image pickup device is mounted on an object side; an optical unit having a lens for imaging an object light on the image pickup device; a blade member adjusting an amount of the object light entering into the lens; a drive unit having a motor driving the blade member; and a motor substrate supplying the motor with a drive power. The optical unit is provided in the image pickup substrate. The drive unit is provided in the optical unit so as to be spaced apart from the image pickup substrate. The motor substrate is provided in the drive unit so as to face the image pickup substrate. The conductive member electrically connecting the image pickup substrate with the motor substrate is disposed between the image pickup substrate and the motor substrate.
    Type: Grant
    Filed: February 6, 2009
    Date of Patent: November 20, 2012
    Assignee: Seiko Precision Inc.
    Inventor: Hisashi Kawamoto
  • IMAGE PICKUP DEVICE
    Publication number: 20120249849
    Abstract: 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 shutter moves in a simulated manner; a focal plane shutter including: a board including an opening; a mechanical type of a trailing shutter capable of opening and closing the opening; an actuator driving the trailing shutter; and a detection portion detecting that the trailing shutter passes through a given position of a movement trace of the trailing shutter; and a drive control portion controlling driving of the actuator based on a detection result of the detection portion.
    Type: Application
    Filed: March 27, 2012
    Publication date: October 4, 2012
    Applicant: SEIKO PRECISION INC.
    Inventors: Yoichi NAKANO, Chiaki Nemoto
  • FOCAL-PLANE SHUTTER AND OPTICAL INSTRUMENT
    Publication number: 20120224842
    Abstract: A focal plane shutter includes: a board including an opening; an arm including: a rear end portion rotatably supported by the board; and a front end portion swingable in response to rotation of the rear and portion; blades coupled to the arm for opening and closing the opening; and a sensor arranged at a position opposite to the arm across the opening, and detecting a state of the blades.
    Type: Application
    Filed: May 16, 2012
    Publication date: September 6, 2012
    Applicant: SEIKO PRECISION INC.
    Inventors: Hiroshi TAKAHASHI, Hideki Tanaka
  • Blade drive device and optical device
    Patent number: 8254008
    Abstract: A blade drive device includes: a board including an optical path opening; first and second blades cooperatively defining an amount of light passing through the optical path opening to a given amount of light. The first blade includes a first opening. The second blade includes: a first cutout portion defining the amount of light in cooperation with the first opening; and a second cutout portion defining the amount of light in cooperation with the first opening. The second cutout portion overlaps the first blade when the first cutout portion and the first opening cooperatively define the amount of light.
    Type: Grant
    Filed: March 11, 2011
    Date of Patent: August 28, 2012
    Assignee: Seiko Precision Inc.
    Inventors: Worachai Jaitham, Prapas Charoensilputthakun
  • FOCAL PLANE SHUTTER AND OPTICAL APPARATUS
    Publication number: 20120213505
    Abstract: A focal plane shutter includes: a board including an opening; a drive lever swingably supported by the board, biased from a start end to a terminal end of a swingable range by a drive spring, and driving blades opening and closing the opening; and a set member rotating in a first direction to position the drive lever at the start end, and then rotating in a second direction.
    Type: Application
    Filed: April 25, 2012
    Publication date: August 23, 2012
    Applicant: SEIKO PRECISION INC.,
    Inventors: Hiroshi TAKAHASHI, Seiichi OISHI
  • BLADE DRIVING DEVICE AND OPTICAL INSTRUMENT
    Publication number: 20120183287
    Abstract: A blade driving device includes: a board including an opening; a blade movable between a position receding from the opening and a position overlapping at least a part of the opening; and a buffering member having a loop shape, having an elasticity, abutting the blade at an end of a movable range of the blade, and being deformable such that the loop shape is warped when abutting against the blade.
    Type: Application
    Filed: March 26, 2012
    Publication date: July 19, 2012
    Applicant: SEIKO PRECISION INC.
    Inventors: Hiroshi TAKAHASHI, Seiichi OISHI
  • FOCAL PLANE SHUTTER AND OPTICAL DEVICE USING SAME
    Publication number: 20120177359
    Abstract: A focal plane shutter includes: a board including an opening; blades capable of opening and closing the opening; a drive member movable between a start position and a terminal position, biased toward the terminal position, and driving the blades; a brake member supported to abut and move away from the drive member positioned at the terminal position, and biased to abut the drive member positioned at the terminal position; and a set member rotatable in only one direction, and moving the drive member from the terminal position to the start position; wherein the set member includes a drive portion abutting the brake member to move the brake member away from the drive member and then abutting the drive member to move the drive member toward the start position.
    Type: Application
    Filed: March 15, 2012
    Publication date: July 12, 2012
    Applicant: SEIKO PRECISION INC.
    Inventors: Hiroshi TAKAHASHI, Yoichi NAKANO
  • DIAPHRAGM DEVICE
    Publication number: 20120170096
    Abstract: A diaphragm device includes: a board including an opening; a step motor including a teeth portion, and rotatable and stoppable at an interval of a predetermined step angle; a transmitting member including a driven teeth portion meshing the teeth portion, and capable of rotating and stopping in response to a drive force of the teeth portion; a drive ring capable of rotating and stopping in response to a drive force of the transmitting member; and a blade capable of stopping at a receding position to recede from the opening or at an aperture position to cover at least a part of the opening, in response to a drive force of the drive ring.
    Type: Application
    Filed: March 14, 2012
    Publication date: July 5, 2012
    Applicant: SEIKO PRECISION INC.
    Inventor: Hisashi KAWAMOTO
  • FOCAL PLANE SHUTTER AND OPTICAL APPARATUS
    Publication number: 20120134660
    Abstract: 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.
    Type: Application
    Filed: November 8, 2011
    Publication date: May 31, 2012
    Applicant: SEIKO PRECISION INC.
    Inventors: Yoichi NAKANO, Makoto Mikami, Chiaki Nemoto
  • Time stamp
    Patent number: 8189018
    Abstract: A time stamp is a device that prints time information on a time card inserted into a time card slot. The time card slot is formed to be inclined downwardly in the depthwise direction of the time stamp at an angle of 8 to 10 degrees or so with the mount surface of the time stamp being a reference. The time stamp has a mount portion to be attached to a wall surface. The time card slot extends in a direction orthogonal to the rear surface of the time stamp.
    Type: Grant
    Filed: October 7, 2009
    Date of Patent: May 29, 2012
    Assignee: SEIKO Precision Inc.
    Inventor: Satoru Matsumoto
  • SWITCH DEVICE
    Publication number: 20120111708
    Abstract: A first operation portion and a second operation portion are depressed in a direction orthogonal to a surface of an electronic circuit board, at least the first operation portion is shifted relative to the center of a first switch, and travel distances or depression forces of a depression operation necessary for respective first and second protrusions to reach respective first and second depression faces are equal to each other.
    Type: Application
    Filed: November 3, 2011
    Publication date: May 10, 2012
    Applicant: SEIKO PRECISION INC.
    Inventor: Satoru Matsumoto
  • Variable focal length lens, and focal length adjusting device, and imaging apparatus that use the same
    Patent number: 8169715
    Abstract: A variable focal length lens, as well as a focal length adjusting device and an imaging device using the same. A variable focal length lens has a lens, a positive electrode, and a negative electrode. A second layer and a first layer constituting the lens are formed from polyvinyl chloride with which a plasticizer has been mixed. The hardness of these layers is adjusted by adjusting the mixing quantity, plasticizer type, etc. The second layer is formed so as so cover at least a light transmission region of the first layer. When a voltage is applied between the positive electrode and the negative electrode, the second layer and first layer are deformed to be pulled to the positive electrode, and thereby the curvature of the variable focal length lens is varied to vary the focal length.
    Type: Grant
    Filed: August 23, 2006
    Date of Patent: May 1, 2012
    Assignees: SEIKO Precision Inc., Shinshu University
    Inventors: Takeshi Kinoshita, Koji Yoneda, Toshihiro Hirai, Takahumi Ogiwara, Katsuya Fujii
  • FOCAL-PLANE SHUTTER AND OPTICAL APPARATUS
    Publication number: 20120087646
    Abstract: A focal plane shutter includes: an electromagnet; a board including an opening; blades capable of opening and closing the opening; a drive member holding an iron piece adsorbed to the electromagnet and driving the blades, the drive member being movable such that the iron piece moves toward and away from the electromagnet and being biased by a spring such that the iron piece moves away from the electromagnet; and a holding board facing the board and including a pair of sandwiching portions elastically deformable and holding and sandwiching the electromagnet. The electromagnet includes a restriction portion engaging the board and restricting a movement of the electromagnet in a direction where the iron piece moves away from the electromagnet.
    Type: Application
    Filed: December 6, 2011
    Publication date: April 12, 2012
    Applicant: SEIKO PRECISION INC.
    Inventors: Hiroshi TAKAHASHI, Yoichi Nakano
  • Lens drive device
    Patent number: 8145050
    Abstract: A lens drive device includes: a lens holder holding a lens; a drive source including a rotor rotatably supported; a gear rotated by a rotation of the rotor; and a driven gear rotated by the gear. The lens holder is moved in an optical axis direction by a rotation of the driven gear. The driven gear includes a teeth portion. The teeth portion includes: a meshed portion meshing the gear; and a non-meshed portion abutting the gear to stop the rotations of the gear and the driven gear.
    Type: Grant
    Filed: October 1, 2009
    Date of Patent: March 27, 2012
    Assignee: Seiko Precision Inc.
    Inventor: Hisashi Kawamoto
  • Actuator and blade drive device for camera
    Patent number: 8137011
    Abstract: 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.
    Type: Grant
    Filed: May 22, 2009
    Date of Patent: March 20, 2012
    Assignee: Seiko Precision Inc.
    Inventors: Mitsuru Suzuki, Akihiro Ito, Shigeru Yanagisawa, Akira Yasuda
  • BLADE DRIVING DEVICE AND OPTICAL APPARATUS
    Publication number: 20120024126
    Abstract: A blade driving device includes: a board including an optical path opening; first and second blades moving toward and away from the optical path opening; first and second transmitting portions driving the first and second blades; and first and second drive sources respectively driving the first and second transmitting portions, wherein the first and second transmitting portions respectively include first and second drive pins, and the first blade includes an engagement slot engaging one of the first and second drive pins and is attached to the first and the second transmitting portions to be roratable about the other of the first and second drive pins.
    Type: Application
    Filed: July 27, 2011
    Publication date: February 2, 2012
    Applicant: SEIKO PRECISION INC.
    Inventors: Phichet NUMNUAL, Takashi Nakano