Patents Assigned to Seiko Precision Inc.
  • Actuator and blade drive device for camera
    Patent number: 7731434
    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 different magnetic poles in a circumferential direction thereof, and rotated by a magnetic force generated 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 rotor and the outputting member are jointed by welding and a welding portion of the rotor lies in a boundary of the magnetic poles thereof.
    Type: Grant
    Filed: March 20, 2009
    Date of Patent: June 8, 2010
    Assignee: Seiko Precision Inc.
    Inventors: Akira Yasuda, Shuichi Kawaguchi, Akihiro Ito, Mikishige Sugasa, Shigeru Yanagisawa
  • Imaging lens
    Patent number: 7733582
    Abstract: An imaging lens enables a large focal depth and low error sensitivity. The imaging lens satisfies “0.016<?/f<0.018,” where ? is the absolute value of longitudinal chromatic aberrations at F curve and C curve wavelengths, and f is the combined focal distance of the entire compound imaging lens. A first, a second, and a third lens are disposed sequentially, the first lens disposed toward an object, and the third lens disposed toward an image surface. The first lens has a positive refraction, a meniscus shape, and a convex surface facing the object. The second lens has a meniscus shape with a concave surface facing the object. The third lens has a convex-type shape facing the object; and a concave-type aspherical shape facing the image surface, providing a negative refraction in a radially central portion and a positive refraction in a radially peripheral portion.
    Type: Grant
    Filed: April 24, 2008
    Date of Patent: June 8, 2010
    Assignee: Seiko Precision Inc.
    Inventor: Junichi Nio
  • Coil bobbin, actuator, and blade drive device for camera
    Patent number: 7717631
    Abstract: 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.
    Type: Grant
    Filed: May 22, 2009
    Date of Patent: May 18, 2010
    Assignee: Seiko Precision Inc.
    Inventor: Mitsuru Suzuki
  • Sensor Detecting Sensitivity Setting Apparatus, Print Apparatus, Wrapping System, Sensor Detecting Sensitivity Setting Method, and Program
    Publication number: 20100107561
    Abstract: A controller that controls a registered mark sensor stores, in a storing unit, a registered mark setting (239) which indicates a setting of the detecting sensitivity of the registered mark sensor in association with a bar code number (231). Upon reception of the bar code number (231) from a bar code reader, the controller reads out the registered mark setting (239) associated with the bar code number (231). Then the controller sets the registered mark sensor to the detecting sensitivity associated with the registered mark setting (239) thus read out.
    Type: Application
    Filed: June 6, 2008
    Publication date: May 6, 2010
    Applicant: SEIKO PRECISION INC.
    Inventors: Yuji Nakagaki, Kazue Shirota, Masao Miura
  • FOCUSING DEVICE AND IMAGING DEVICE
    Publication number: 20100103542
    Abstract: A focusing device of simple construction that is miniaturizable, and an imaging device utilizing the same, are provided. A focusing device (10) comprises an actuator (11), a lens holder (12) that holds lenses (13a) and (13b), and a holder support base (14) upon which the lens holder (12) is installed. The actuator (11) comprises a polymer layer (51), a positive electrode (52) that is formed upon the holder support base (14), and a negative electrode (53) that is formed upon the lens holder (12). When the applied voltage between the positive electrode (52) and the negative electrode (53) rises, the polymer layer (51) deforms radially outward along the positive electrode (52). Along with this deformation of the polymer layer (51), the actuator (11) moves the lens holder (12) along the optical axis.
    Type: Application
    Filed: March 17, 2006
    Publication date: April 29, 2010
    Applicants: SEIKO PRECISION, INC., SHINSHU UNIVERSITY
    Inventors: Akira Yasuda, Takeshi Kinoshita, Toshihiro Hirai
  • BLADE DRIVE DEVICE AND OPTICAL APPARATUS
    Publication number: 20100092166
    Abstract: A blade drive device includes a shutter unit. The shutter unit includes: a blade swingably supported; and a plurality of boards defining a blade chamber, each having an opening opened and closed by the blade. and an actuator serving as a drive force of the blade and including a rotor having a rotary shaft. The rotary shaft penetrates to the blade chamber. An elastic member is housed in the blade chamber, and urges the rotary shaft in a thrust direction.
    Type: Application
    Filed: December 14, 2009
    Publication date: April 15, 2010
    Applicant: SEIKO PRECISION INC.
    Inventor: Hisashi KAWAMOTO
  • Time Stamp
    Publication number: 20100085393
    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: Application
    Filed: October 7, 2009
    Publication date: April 8, 2010
    Applicant: SEIKO Precision Inc.
    Inventor: Satoru MATSUMOTO
  • Reduction gear
    Patent number: 7686725
    Abstract: A reduction gear includes a reduction mechanism, which includes: an external gear eccentrically rotatable about an input shaft; an internal gear internally meshing with the external gear and having a small number of difference between the teeth of the internal gear and the external gear; a disk for extracting only a rotational component of the external gear; an output shaft; and gears for transmitting the rotational component of the external gear from the disk to the output shaft. The disk, the gears and the output shaft are aligned in a direction perpendicular to an axial direction of the input shaft.
    Type: Grant
    Filed: August 8, 2008
    Date of Patent: March 30, 2010
    Assignee: Seiko Precision Inc.
    Inventor: Hisashi Kawamoto
  • BLADE DRIVE DEVICE
    Publication number: 20100074612
    Abstract: A blade drive device includes: a board having a shutter opening; a blade for adjusting an amount of light entering the shutter opening; and a transmitting member for transmitting a drive force to the blade. The transmitting member includes a drive pin swinging about a given support point. The blade has a first cam slot engaged with the drive pin and swinging about a given support point in conjunction with a swinging of the drive pin. The first cam slot includes a first permitting area and a first restricting area. The blade is permitted to swing when the drive pin is located in the first permitting area. The blade is restricted from swinging when the drive pin is located in the first restricting area.
    Type: Application
    Filed: November 18, 2009
    Publication date: March 25, 2010
    Applicant: SEIKO PRECISION INC.
    Inventors: Phichet NUMNUAL, Takashi NAKANO, Prapas CHAROENSILPUTTHAKUN, Noppadol NGERNPING
  • Clock device, clock system, and time measuring method
    Patent number: 7675822
    Abstract: A clock device is held by a moving body, and receives a modulated wave from two electromagnetic fields generated by an antenna formed in a predetermined shape and disposed on a path. The clock device demodulates the modulated wave and acquires unique identification information. The clock device determines a non-detection period after the identification information is acquired. The clock device acquires a reference time corresponding to a middle of the non-detection period, and specifies the acquired reference time as a pass time when the moving body has passed through a point where the antenna is disposed.
    Type: Grant
    Filed: September 26, 2007
    Date of Patent: March 9, 2010
    Assignee: Seiko Precision Inc.
    Inventor: Nakanobu Moritani
  • IMAGING LENS, AND IMAGING APPARATUS AND MOBILE TERMINAL APPARATUS USING THE SAME
    Publication number: 20100053775
    Abstract: An imaging lens comprises a first lens (L1), a second lens (L2), a third lens (L3), and a fourth lens (L4), which are arranged in ascending sequence, starting from the lens nearest to the object. The first lens (L1) has a double-convex shape and positive refractive power. The second lens (L2) has a double-concave shape and negative refractive power. The third lens (L3) has a meniscus shape with its convex surface facing an image plane, and has positive refractive power. The fourth lens (L4) has a meniscus shape with its convex surface facing the object. A chromatic aberration occurred in the first lens (L1) is corrected by the second lens (L2). A chromatic aberration occurred in the third lens (L3) is corrected by the fourth lens (L4).
    Type: Application
    Filed: December 21, 2007
    Publication date: March 4, 2010
    Applicant: Seiko Precision, Inc.
    Inventor: Junichi Nio
  • SECTOR BLADE DRIVING APPARATUS
    Publication number: 20100054729
    Abstract: A sector blade driving apparatus includes: a board having an opening; a blade supported for linear movement, adjusting an opening amount of the opening, and having first and second engagement holes; a drive member rotating to drive the blade; and an arm transmitting an drive force of the drive member to the blade, and provided in the drive member. The arm is provided with first and second drive pins respectively engaging the first and second engagement holes.
    Type: Application
    Filed: November 11, 2009
    Publication date: March 4, 2010
    Applicant: SEIKO PRECISION INC.
    Inventors: Phichet NUMNUAL, Takashi Nakano
  • BLADE DRIVE DEVICE AND OPTICAL EQUIPMENT
    Publication number: 20100054728
    Abstract: 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.
    Type: Application
    Filed: November 11, 2009
    Publication date: March 4, 2010
    Applicant: SEIKO PRECISION INC.
    Inventor: Mitsuru SUZUKI
  • Shutter drive device for camera
    Patent number: 7670069
    Abstract: 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.
    Type: Grant
    Filed: February 4, 2009
    Date of Patent: March 2, 2010
    Assignee: Seiko Precision Inc.
    Inventors: Mitsuru Suzuki, Akihiro Ito
  • Actuator, shutter driving device for camera and method of manufacturing actuator
    Patent number: 7670068
    Abstract: An actuator includes: a coil for excitation; a stator excited with different magnetic poles by energization of the coil; a rotor magnetized with different magnetic poles in a circumferential direction, and rotated by 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 member. The outputting member fits onto the rotor, and the rotor has at least one of a recess portion and a projection portion at a fitting surface of the rotor. The outputting member is jointed with the rotor so as to have a shape corresponding to the at least one of the recess portion and the projection portion by welding.
    Type: Grant
    Filed: March 27, 2008
    Date of Patent: March 2, 2010
    Assignee: Seiko Precision Inc.
    Inventors: Akira Yasuda, Akihiro Ito, Masato Tanaka
  • BLADE DRIVE DEVICE
    Publication number: 20100046939
    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 the blade and that houses the blade and the drive source. The drive source includes: a rotor that is rotatably supported; a stator around which a coil for excitation is wound and which applies a rotational force to the rotor. The stator is arranged to surround a periphery of the opening and has a rectangular shape.
    Type: Application
    Filed: October 30, 2009
    Publication date: February 25, 2010
    Applicant: SEIKO PRECISION INC.
    Inventors: Koichi MASUZAWA, Kenichi Kudo
  • BLADE DRIVE DEVICE
    Publication number: 20100046938
    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: Application
    Filed: October 30, 2009
    Publication date: February 25, 2010
    Applicant: SEIKO PRECISION INC.
    Inventors: Koichi MASUZAWA, Kenichi Kudo
  • LENS DRIVE DEVICE
    Publication number: 20100040357
    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: Application
    Filed: October 1, 2009
    Publication date: February 18, 2010
    Applicant: SEIKO PRECISION INC.
    Inventor: Hisashi KAWAMOTO
  • Shutter and optical apparatus having the same apparatus
    Patent number: 7658558
    Abstract: A shutter for an optical apparatus has multiple sectors and an operation member. Each of the multiple sectors has a cam opening for engagement and is pivotally provided to open and close a shutter opening, the operation member moves each of said multiple sectors in engagement with the cam opening, and the cam opening of at least one sector that is one of the multiple sectors is formed to change a moving direction of said at least one sector, when the operation member moves said at least one sector to a position to close the shutter opening.
    Type: Grant
    Filed: July 1, 2008
    Date of Patent: February 9, 2010
    Assignee: Seiko Precision, Inc.
    Inventors: Hisashi Kawamoto, Kazuya Shioda, Phichet Numnual
  • BLADE DRIVE DEVICE
    Publication number: 20100026106
    Abstract: A blade drive device includes: a board that has an opening; a blade that opens and closes the opening; and a drive source that drives the blade. The drive source includes a rotor rotatably supported and a stator for applying a rotational force to the rotor. The stator, around which a coil for excitation is wound, has a fitting hole fitted with a projective portion formed on the board and has a rectangular shape.
    Type: Application
    Filed: October 9, 2009
    Publication date: February 4, 2010
    Applicant: SEIKO PRECISION INC.
    Inventors: Koichi MASUZAWA, Kenichi Kudo