Patents by Inventor Nobuaki Watanabe

Nobuaki Watanabe has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 7708479
    Abstract: An imaging device and a portable information terminal device of the present invention include: a blade driving unit (20) made up of a base plate (21) having an opening portion (21a) serving as an optical path, an infrared light cut filter blade (23) movably supported by the base plate between a receded position displaced from the opening portion and a position facing the opening portion, and a first electromagnetic driving source (26) that drives the infrared light cut filter blade (23); a lens optical system (32, 33, 34) arranged on the optical path passing through the opening portion; an imaging element (42) that images an object through the lens optical system; and a control unit (51) that drives and controls the blade driving unit (20) and the imaging element (42). The control unit drives and controls the first electromagnetic driving source (26) so as to move the infrared light cut filter blade (23) to the receded position when using an infrared light.
    Type: Grant
    Filed: April 27, 2006
    Date of Patent: May 4, 2010
    Assignee: Nidec Copal Corporation
    Inventors: Nobuaki Watanabe, Yoshiyuki Ohzeki, Mitsutaka Hidaka
  • Patent number: 7699542
    Abstract: A transparent plate is fixed to the body of a mobile phone with a camera in order to cover an aperture for photography. A solid-state image sensor (4) is placed on the image plane of a photographing optical system. Between a base plate having an aperture for regulating the optical path of photographing light and a cover plate having an aperture, a blade chamber for housing a shutter blade is provided, and an actuator for driving the shutter blade is fixed to the outer surface of the blade chamber. The base plate and the cover plate are arranged in the body so that the aperture is located between the transparent plate and the photographing optical system.
    Type: Grant
    Filed: October 14, 2004
    Date of Patent: April 20, 2010
    Assignee: Nidec Copal Corporation
    Inventors: Nobuaki Watanabe, Yoshiyuki Ohzeki
  • Patent number: 7649300
    Abstract: An electromagnetic actuator includes a rotor rotatable within a predetermined angular range, a magnetizing coil, and a yoke having an arcuate surface facing the rotor, and first and second magnetic-pole parts that have mutually different magnetic poles upon energizing the coil. The rotor includes a magnetized rotor part defining the outer peripheral surface of the rotor and magnetized to have different magnetic poles, a non-magnetized driving pin rotatable with the magnetized rotor part, and a protrusion part protruding radially from the rotor and facing the first or second magnetic-pole part while being magnetized to have the same magnetic pole as the outer peripheral surface of the rotor. The surface of the rotor that faces the yoke and that exerts a magnetic action is increased due to the inclusion of the protrusion part, and hence a desired maintaining force and driving torque can be obtained.
    Type: Grant
    Filed: March 21, 2006
    Date of Patent: January 19, 2010
    Assignee: Nidec Copal Corporation
    Inventor: Nobuaki Watanabe
  • Publication number: 20090052886
    Abstract: An imaging device and a portable information terminal device of the present invention include: a blade driving unit (20) made up of a base plate (21) having an opening portion (21a) serving as an optical path, an infrared light cut filter blade (23) movably supported by the base plate between a receded position displaced from the opening portion and a position facing the opening portion, and a first electromagnetic driving source (26) that drives the infrared light cut filter blade (23); a lens optical system (32, 33, 34) arranged on the optical path passing through the opening portion; an imaging element (42) that images an object through the lens optical system; and a control unit (51) that drives and controls the blade driving unit (20) and the imaging element (42). The control unit drives and controls the first electromagnetic driving source (26) so as to move the infrared light cut filter blade (23) to the receded position when using an infrared light.
    Type: Application
    Filed: April 27, 2006
    Publication date: February 26, 2009
    Inventors: Nobuaki Watanabe, Yoshiyuki Ohzeki, Mitsutaka Hidaka
  • Publication number: 20080030604
    Abstract: A digital camera includes at least one shutter blade in which opening and closing operations of an exposure aperture are performed by an electromagnetic actuator; an image sensor converting light from an object into image information; an image processing circuit in which the image information converted by the image sensor is stored into an image memory and then can be fetched and which has terminals for connecting the image processing circuit to an estimation display device; an exposure control circuit provided with a reference table for controlling the amount of exposure and at least one correction table which allows the amount of light controlled by the reference table to be corrected; and a driving circuit in which the electromagnetic actuator is driven by an output signal of the exposure control circuit.
    Type: Application
    Filed: July 30, 2007
    Publication date: February 7, 2008
    Inventors: Yusuke Ehara, Nobuaki Watanabe, Yoshiyuki Ozeki
  • Patent number: 7254882
    Abstract: The present invention provides a method for sealing a metal housing member. A housing through hole is formed in a housing member for a lead wire sealing device. The housing member is provided with a housing through hole formed on the metal housing member and penetrates from a closed space to an open space. A resin coating layer is formed to cover a lower surface of the housing member. A metal surface exposed part is formed on a part of the resin coating layer. The circuit board having a board aperture is mounted on the metal surface exposed part via an adhesive layer while overlapping with the board aperture on the housing through hole. The lead wire is inserted in the housing through hole and the board aperture that are overlapped with each other. The sealing material is provided on the circuit board to cover the board aperture.
    Type: Grant
    Filed: August 3, 2006
    Date of Patent: August 14, 2007
    Assignee: Nidec Corporation
    Inventors: Tokichi Ito, Nobuaki Watanabe, Yoshito Oku, Hiroyuki Yonei
  • Publication number: 20070077061
    Abstract: A transparent plate is fixed to the body of a mobile phone with a camera in order to cover an aperture for photography. A solid-state image sensor (4) is placed on the image plane of a photographing optical system. Between a base plate having an aperture for regulating the optical path of photographing light and a cover plate having an aperture, a blade chamber for housing a shutter blade is provided, and an actuator for driving the shutter blade is fixed to the outer surface of the blade chamber. The base plate and the cover plate are arranged in the body so that the aperture is located between the transparent plate and the photographing optical system.
    Type: Application
    Filed: October 14, 2004
    Publication date: April 5, 2007
    Applicant: NIDEC COPAL CORPORATION
    Inventors: Nobuaki Watanabe, Yoshiyuki Ohzeki
  • Publication number: 20070042918
    Abstract: The present invention is directed to a lubricating oil additive containing a reaction product of a succinimide compound and a phosphorus atom-containing compound, and to a lubricating oil composition containing a mineral oil and/or a synthetic base oil, and the above lubricating oil additive.
    Type: Application
    Filed: October 4, 2004
    Publication date: February 22, 2007
    Applicant: Idemitsu Kosan Co., Ltd.
    Inventors: Shinichi Yanagi, Hiroaki Koshima, Izumi Terada, Toshihiko Ichihashi, Nobuaki Watanabe
  • Patent number: 7156564
    Abstract: A blade driving device for use in cameras of the present invention includes a base plate having an exposure aperture, an ND filter blade that is supported rotatably around a supporting shaft on the base plate and is moved to a position withdrawn from the exposure aperture and a position facing the exposure aperture, and an electromagnetic actuator that drives the ND filter blade. This electromagnetic actuator includes a frame member joined to the base plate, a rotor which has a drive pin for exerting a driving force and rotates within a predetermined angle range with one end of which being supported to the frame member and the other end of which being supported to the base plate, and an exciting coil wound around the frame member and the base plate. Therefore, the structure of the electromagnetic actuator for driving a shutter blade, a diaphragm blade, an ND filter blade or the like can be simplified and reduced in cost, and this makes it possible to reduce the size and thickness of the device.
    Type: Grant
    Filed: September 15, 2004
    Date of Patent: January 2, 2007
    Assignee: Nidec Copal Corporation
    Inventors: Nobuaki Watanabe, Shigeru Yamagishi, Tohru Eguro
  • Publication number: 20060265871
    Abstract: A first metal housing member 111 is provided with a bottom plate part 1111 and a resin coating layer 1112 formed on a lower surface of the bottom plate part 1111. To a board mounted part 1113 which is a metal surface exposed part exposed from the resin coating layer 1112 around a housing through hole 113, an FPC 114 is mounted via an adhesive layer 115. A lead wire 1413 of a stator windings 1414 that is inserted in a board aperture 1144 is connected to the FPC 114 by a sealing material 117 as a solder and the board aperture 1144 is covered with the sealing material 117 to seal the housing through hole 113. A motor unit 10 can securely seal the housing through hole 113 by enhancing adhesiveness between the FPC 114 and the first metal housing member 111.
    Type: Application
    Filed: August 3, 2006
    Publication date: November 30, 2006
    Applicant: NIDEC CORPORATION
    Inventors: Tokichi Ito, Nobuaki Watanabe, Yoshito Oku, Hiroyuki Yonei
  • Publication number: 20060220490
    Abstract: An electromagnetic actuator of the present invention includes a rotor that has a cylindrical outer peripheral surface and that is capable of rotating within a predetermined angular range, a magnetizing coil, and a yoke that has an arcuate surface facing the outer peripheral surface, a first magnetic-pole part, and a second magnetic-pole part. The first and second magnetic-pole parts generate mutually different magnetic poles by energizing the coil. The rotor includes a magnetized rotor part that defines the outer peripheral surface of the rotor and that is magnetized to have different magnetic poles in a circumferential direction, a driving pin that is not magnetized so as to rotate together with the magnetized rotor part, and a protrusion part that is protruded in a radial direction from the outer peripheral surface of the rotor and that faces the first magnetic-pole part or the second magnetic-pole part while being magnetized to have the same magnetic pole as the outer peripheral surface of the rotor.
    Type: Application
    Filed: March 21, 2006
    Publication date: October 5, 2006
    Inventor: Nobuaki Watanabe
  • Patent number: 7105963
    Abstract: A first metal housing member 111 is provided with a bottom plate part 1111 and a resin coating layer 1112 formed on a lower surface of the bottom plate part 1111. To a board mounted part 1113 which is a metal surface exposed part exposed from the resin coating layer 1112 around a housing through hole 113, an FPC 114 is mounted via an adhesive layer 115. A lead wire 1413 of a stator windings 1414 that is inserted in a board aperture 1144 is connected to the FPC 114 by a sealing material 117 as a solder and the board aperture 1144 is covered with the sealing material 117 to seal the housing through hole 113. A motor unit 10 can securely seal the housing through hole 113 by enhancing adhesiveness between the FPC 114 and the first metal housing member 111.
    Type: Grant
    Filed: May 3, 2005
    Date of Patent: September 12, 2006
    Assignee: Nidec Corporation
    Inventors: Tokichi Ito, Nobuaki Watanabe, Yoshito Oku, Hiroyuki Yonei
  • Publication number: 20060138886
    Abstract: A first metal housing member 111 is provided with a bottom plate part 1111 and a resin coating layer 1112 formed on a lower surface of the bottom plate part 1111. To a board mounted part 1113 which is a metal surface exposed part exposed from the resin coating layer 1112 around a housing through hole 113, an FPC 114 is mounted via an adhesive layer 115. A lead wire 1413 of a stator windings 1414 that is inserted in a board aperture 1144 is connected to the FPC 114 by a sealing material 117 as a solder and the board aperture 1144 is covered with the sealing material 117 to seal the housing through hole 113. A motor unit 10 can securely seal the housing through hole 113 by enhancing adhesiveness between the FPC 114 and the first metal housing member 111.
    Type: Application
    Filed: May 3, 2005
    Publication date: June 29, 2006
    Applicant: NIDEC CORPORATION
    Inventors: Tokichi Ito, Nobuaki Watanabe, Yoshito Oku, Hiroyuki Yonei
  • Patent number: 7012191
    Abstract: According to a lead wire sealing device of an example of the present invention, a bush 116 is inserted in a housing through hole 113 formed in a bottom plate member 1110 and a lead wire 1343 is inserted in the inside of the bush 116. A first adhesive 117 is loaded in the inside of the bush 116, the first space S1, the second space S2 and the third space S3. A second adhesive 118 covers the first adhesive 117 at the edge where a flange portion 1162 of the bush 116 is provided. The first adhesive 117 having a lower viscosity is easily inserted in the first space S1 by a capillary action to be loaded without a space. As a result, it is possible to certainly seal the first space S1.
    Type: Grant
    Filed: May 3, 2005
    Date of Patent: March 14, 2006
    Assignee: Nidec Corporation
    Inventors: Nobuaki Watanabe, Tokichi Ito
  • Publication number: 20050058444
    Abstract: A blade driving device for use in cameras of the present invention includes a base plate having an exposure aperture, an ND filter blade that is supported rotatably around a supporting shaft on the base plate and is moved to a position withdrawn from the exposure aperture and a position facing the exposure aperture, and an electromagnetic actuator that drives the ND filter blade. This electromagnetic actuator includes a frame member joined to the base plate, a rotor which has a drive pin for exerting a driving force and rotates within a predetermined angle range with one end of which being supported to the frame member and the other end of which being supported to the base plate, and an exciting coil wound around the frame member and the base plate. Therefore, the structure of the electromagnetic actuator for driving a shutter blade, a diaphragm blade, an ND filter blade or the like can be simplified and reduced in cost, and this makes it possible to reduce the size and thickness of the device.
    Type: Application
    Filed: September 15, 2004
    Publication date: March 17, 2005
    Inventors: Nobuaki Watanabe, Shigeru Yamagishi, Tohru Eguro
  • Publication number: 20040255737
    Abstract: The present invention provides an industrial waste cutting apparatus for cutting finely the industrial wastes generated from such as industrial products of a great variety of types and domestic products such as used materials and old furniture, regardless of whether they are soft or hard, so that they can be easily disposed off, and it is an object thereof to cut soft materials, which are especially difficult to cut, with a very high efficiency.
    Type: Application
    Filed: August 9, 2004
    Publication date: December 23, 2004
    Inventors: Seiichi Sakato, Masayuki Sakato, Jo Nakano, Katsumori Nakao, Nobuaki Watanabe, Masao Miyamoto, Hiroyuki Moriwaki
  • Patent number: 6797679
    Abstract: Provided is a lubricant composition prepared by adding, to a base oil, (a) from 0.01 to 5% by mass, based on the composition, of a phosphate, (b) from 0.005 to 1% by mass of an amine salt of an acid phosphate and (c) from 0.01 to 1% by mass of a sulfur-containing extreme-pressure agent. The composition is favorable for non-zinc hydraulic oil, which has good oxidation resistance, sludge resistance and wear resistance and further has improved extreme pressure resistance and prolonged fatigue life.
    Type: Grant
    Filed: December 10, 2002
    Date of Patent: September 28, 2004
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Hiroshi Kawasaki, Nobuaki Watanabe
  • Publication number: 20040105028
    Abstract: A blade driving device for use in cameras includes a mechanical shutter blade that is openably and closably disposed in front of a CCD and that is capable of blocking light passing through an exposure aperture, a motor that drives a shutter blade, and a control means that drive-controls the motor. In this blade driving device, photography is performed such that the storage of an electric charge starts in the CCD and the closing motion of the shutter blade is completed. Opening energization is applied to the motor in order to allow the shutter blade to pre-perform an opening motion before performing a closing motion whenever a still image is photographed. Thus, the shutter blade always reaches an opened state prior to photography even if the shutter blade is closed without permission by receiving an impulsive force from the outside because of, for example, its being dropped. Therefore, photography can be reliably performed.
    Type: Application
    Filed: November 25, 2003
    Publication date: June 3, 2004
    Inventor: Nobuaki Watanabe
  • Patent number: 6733192
    Abstract: An electromagnetic actuator according to the present invention has a rotor magnetized to have a plurality of poles; a base rotatably supporting the rotor; a yoke having a plurality of magnetic pole portions that are formed so as to face an outer peripheral surface of the rotor and that generate different magnetic poles; a magnetizing coil; and a bobbin/presser member which is disposed on an outer periphery of the yoke, around which the coil is wound, and with which a pressing portion for pressing the yoke against the base and for supporting the rotor is formed integrally.
    Type: Grant
    Filed: June 24, 2003
    Date of Patent: May 11, 2004
    Assignee: Nidec Copal Corporation
    Inventor: Nobuaki Watanabe
  • Patent number: 6726380
    Abstract: A camera blade driving device for use in a camera has a base plate having an exposure aperture; a blade supported pivotably on a supporting shaft on the base plate and capable of blocking part or all of light passing through the aperture while facing the aperture; and an electromagnetic actuator for driving the blade. The electromagnetic actuator has a frame member joined to the base plate; a rotor one end of which is supported by the frame member and an opposite end of which is supported by the base plate, the rotor having a driving pin by which a driving force is exerted onto the blade and rotating within a predetermined angular range; a magnetizing coil wound onto the frame member and the base plate; and a yoke provided outside the coil substantially coaxially with the rotor.
    Type: Grant
    Filed: August 26, 2003
    Date of Patent: April 27, 2004
    Assignee: Nidec Copal Corporation
    Inventors: Nobuaki Watanabe, Tohru Eguro, Shigeru Yamagishi