Patents by Inventor Shingo Hayakawa

Shingo Hayakawa 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: 8963479
    Abstract: A power conversion device includes an inverter unit and a control unit. The inverter unit includes high SWs and low SWs for each phase of coils of a motor. The control unit, in a case that the on-time of the high SWs and the low SWs is shorter than a predetermined time determined based on a dead time, changes an output voltage average value such that the on-time of the high SWs or the on-time of the low SWs becomes longer than the predetermined time. The voltage use rate can be improved without disposing a special circuit, and distortion of inter-line voltages or distortion of currents can be suppressed.
    Type: Grant
    Filed: December 6, 2011
    Date of Patent: February 24, 2015
    Assignee: Denso Corporation
    Inventors: Takashi Suzuki, Kazutoshi Shiomi, Atsuyuki Hiruma, Shingo Hayakawa
  • Publication number: 20120139461
    Abstract: A power conversion device includes an inverter unit and a control unit. The inverter unit includes high SWs and low SWs for each phase of coils of a motor. The control unit, in a case that the on-time of the high SWs and the low SWs is shorter than a predetermined time determined based on a dead time, changes an output voltage average value such that the on-time of the high SWs or the on-time of the low SWs becomes longer than the predetermined time. The voltage use rate can be improved without disposing a special circuit, and distortion of inter-line voltages or distortion of currents can be suppressed.
    Type: Application
    Filed: December 6, 2011
    Publication date: June 7, 2012
    Applicant: DENSO CORPORATION
    Inventors: Takashi Suzuki, Kazutoshi Shiomi, Atsuyuki Hiruma, Shingo Hayakawa
  • Patent number: 7528870
    Abstract: An image pickup apparatus includes an image pickup region in which a plurality of pixels are arranged, each pixel including a plurality of photoelectric conversion portions disposed in the depth direction of a semiconductor; and a filter which is disposed on the incident side of the image pickup region and which has a characteristic wherein the transmittance of light in the visible wavelength region decreases as the wavelength of light becomes longer.
    Type: Grant
    Filed: October 15, 2007
    Date of Patent: May 5, 2009
    Assignee: Canon Kabushiki Kaisha
    Inventor: Shingo Hayakawa
  • Patent number: 7479997
    Abstract: An image pickup apparatus includes an image pickup region in which a plurality of pixels are arranged, each pixel including a plurality of photoelectric conversion portions disposed in the depth direction of a semiconductor; and a filter which is disposed on the incident side of the image pickup region and which has a characteristic wherein the transmittance of light in the visible wavelength region decreases as the wavelength of light becomes longer.
    Type: Grant
    Filed: March 14, 2003
    Date of Patent: January 20, 2009
    Assignee: Canon Kabushiki Kaisha
    Inventor: Shingo Hayakawa
  • Publication number: 20080036903
    Abstract: An image pickup apparatus includes an image pickup region in which a plurality of pixels are arranged, each pixel including a plurality of photoelectric conversion portions disposed in the depth direction of a semiconductor; and a filter which is disposed on the incident side of the image pickup region and which has a characteristic wherein the transmittance of light in the visible wavelength region decreases as the wavelength of light becomes longer.
    Type: Application
    Filed: October 15, 2007
    Publication date: February 14, 2008
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Shingo Hayakawa
  • Publication number: 20060132641
    Abstract: A wavelength selective member for intercepting the passage of a beam of a predetermined wavelength range is disposed on a light incidence side of an optical member formed of an organic material having optical anisotropy, to thereby provide an optical filter which suffers little from the deterioration of performance with the passage of time by near ultraviolet rays, etc.
    Type: Application
    Filed: November 1, 2005
    Publication date: June 22, 2006
    Inventor: Shingo Hayakawa
  • Patent number: 6963448
    Abstract: If the thickness of a birefringence plate that forms an optical low-pass filter is not appropriately set, problems in terms of optical characteristics or machine works are posed. Hence, there is provided an optical low-pass filter which has at least one birefringence plate which is made of a uniaxial single crystal that causes birefringence of incoming rays, has a refractive index difference of 0.02 or more for ordinary and extraordinary rays, and satisfies one of: 10°<?<30° ??(1) 60°<?<80° ??(2) where ? is the angle the optic axis of the birefringence plate makes with the normal to the surface of the birefringence plate.
    Type: Grant
    Filed: November 17, 2000
    Date of Patent: November 8, 2005
    Assignee: Canon Kabushiki Kaisha
    Inventor: Shingo Hayakawa
  • Patent number: 6728033
    Abstract: An image stabilizing optical lens device including, in order from an object side to an image side of the image stabilizing optical lens device, a first lens unit having positive refractive power, a second lens unit having negative refractive power and being movable along an optical axis of the image stabilizing optical lens device to perform focusing, and a third lens unit having positive refractive power, the third lens unit including a front lens sub-unit having negative refractive power and being movable so as to be decentered with respect to the optical axis and a rear lens sub-unit having positive refractive power.
    Type: Grant
    Filed: March 18, 2002
    Date of Patent: April 27, 2004
    Assignee: Canon Kabushiki Kaisha
    Inventor: Shingo Hayakawa
  • Patent number: 6646803
    Abstract: A zoom lens is disclosed comprising, from front to rear, a first lens unit of positive refractive power, a second lens unit of negative refractive power, a third lens unit of positive refractive power, a fourth lens unit of negative refractive power, a fifth lens unit of positive refractive power and a sixth lens unit of negative refractive power, wherein, during zooming from the wide-angle end to the telephoto end, the air separations between the i-th and (i+1)st lens units are made to vary properly and the ratio of the focal length of the fourth lens unit to the longest focal length of the entire system is made to have a proper value. In particular, a zoom lens is disclosed wherein the second lens unit is made to decenter to stabilize the image.
    Type: Grant
    Filed: February 18, 2000
    Date of Patent: November 11, 2003
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shingo Hayakawa, Kazuhiko Momoki
  • Publication number: 20030193586
    Abstract: An image pickup apparatus includes an image pickup region in which a plurality of pixels are arranged, each pixel including a plurality of photoelectric conversion portions disposed in the depth direction of a semiconductor; and a filter which is disposed on the incident side of the image pickup region and which has a characteristic wherein the transmittance of light in the visible wavelength region decreases as the wavelength of light becomes longer.
    Type: Application
    Filed: March 14, 2003
    Publication date: October 16, 2003
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Shingo Hayakawa
  • Patent number: 6618197
    Abstract: An image stabilizing optical objective lens system comprising, in the order from the side of the system closest to an object, a first lens unit having a positive refractive power, a second lens unit having a negative refractive power, a third lens unit having a positive refractive power, a fourth lens unit having a negative refractive power, and a fifth lens unit having a positive refractive power. The objective lens system performs focusing by moving the second lens unit in the direction of the optical axis of the system for focusing and corrects image blur by moving the fourth lens unit in the direction perpendicular to the optical axis.
    Type: Grant
    Filed: December 22, 1997
    Date of Patent: September 9, 2003
    Assignee: Canon Kabushiki Kaisha
    Inventor: Shingo Hayakawa
  • Patent number: 6563643
    Abstract: A zoom lens is disclosed comprising, from front to rear, a first lens unit of positive refractive power, a second lens unit of negative refractive power, a third lens unit of positive refractive power, a fourth lens unit of negative refractive power, a fifth lens unit of positive refractive power and a sixth lens unit of negative refractive power, wherein, during zooming from the wide-angle end to the telephoto end, the air separations between the i-th and (i+1)st lens units are made to vary properly and the ratio of the focal length of the fourth lens unit to the longest focal length of the entire system is made to have a proper value. In particular, a zoom lens is disclosed wherein the second lens unit is made to decenter to stabilize the image.
    Type: Grant
    Filed: October 29, 2001
    Date of Patent: May 13, 2003
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shingo Hayakawa, Kazuhiko Momoki
  • Publication number: 20020154409
    Abstract: A zoom lens is disclosed comprising, from front to rear, a first lens unit of positive refractive power, a second lens unit of negative refractive power, a third lens unit of positive refractive power, a fourth lens unit of negative refractive power, a fifth lens unit of positive refractive power and a sixth lens unit of negative refractive power, wherein, during zooming from the wide-angle end to the telephoto end, the air separations between the i-th and (i+1)st lens units are made to vary properly and the ratio of the focal length of the fourth lens unit to the longest focal length of the entire system is made to have a proper value. In particular, a zoom lens is disclosed wherein the second lens unit is made to decenter to stabilize the image.
    Type: Application
    Filed: February 18, 2000
    Publication date: October 24, 2002
    Inventors: Shingo Hayakawa, Kazuhiko Momoki
  • Publication number: 20020126383
    Abstract: An image stabilizing optical lens device including, in order from an object side to an image side of the image stabilizing optical lens device, a first lens unit having positive refractive power, a second lens unit having negative refractive power and being movable along an optical axis of the image stabilizing optical lens device to perform focusing, and a third lens unit having positive refractive power, the third lens unit including a front lens sub-unit having negative refractive power and being movable so as to be decentered with respect to the optical axis and a rear lens sub-unit having positive refractive power.
    Type: Application
    Filed: March 18, 2002
    Publication date: September 12, 2002
    Inventor: Shingo Hayakawa
  • Publication number: 20020060844
    Abstract: A zoom lens is disclosed comprising, from front to rear, a first lens unit of positive refractive power, a second lens unit of negative refractive power, a third lens unit of positive refractive power, a fourth lens unit of negative refractive power, a fifth lens unit of positive refractive power and a sixth lens unit of negative refractive power, wherein, during zooming from the wide-angle end to the telephoto end, the air separations between the i-th and (i+1)st lens units are made to vary properly and the ratio of the focal length of the fourth lens unit to the longest focal length of the entire system is made to have a proper value. In particular, a zoom lens is disclosed wherein the second lens unit is made to decenter to stabilize the image.
    Type: Application
    Filed: October 29, 2001
    Publication date: May 23, 2002
    Inventors: Shingo Hayakawa, Kazuhiko Momoki
  • Patent number: 6384975
    Abstract: An image stabilizing optical lens device including, in order from an object side to an image side of the image stabilizing optical lens device, a first lens unit having positive refractive power, a second lens unit having negative refractive power and being movable along an optical axis of the image stabilizing optical lens device to perform focusing, and a third lens unit having positive refractive power, the third lens unit including a front lens sub-unit having negative refractive power and being movable so as to be decentered with respect to the optical axis and a rear lens sub-unit having positive refractive power.
    Type: Grant
    Filed: April 29, 1996
    Date of Patent: May 7, 2002
    Assignee: Canon Kabushiki Kaisha
    Inventor: Shingo Hayakawa
  • Patent number: 6373639
    Abstract: A zoom lens is disclosed comprising, from front to rear, a first lens unit of positive refractive power, a second lens unit of negative refractive power, a third lens unit of positive refractive power, a fourth lens unit of negative refractive power, a fifth lens unit of positive refractive power and a sixth lens unit of negative refractive power, wherein, during zooming from the wide-angle end to the telephoto end, the air separations between the i-th and (i+1)st lens units are made to vary properly and the ratio of the focal length of the fourth lens unit to the longest focal length of the entire system is made to have a proper value. In particular, a zoom lens is disclosed wherein the second lens unit is made to decenter to stabilize the image.
    Type: Grant
    Filed: October 20, 1998
    Date of Patent: April 16, 2002
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shingo Hayakawa, Kazuhiko Momoki
  • Publication number: 20010030809
    Abstract: A zoom lens is disclosed comprising, from front to rear, a first lens unit of positive refractive power, a second lens unit of negative refractive power, a third lens unit of positive refractive power, a fourth lens unit of negative refractive power, a fifth lens unit of positive refractive power and a sixth lens unit of negative refractive power, wherein, during zooming from the wide-angle end to the telephoto end, the air separations between the i-th and (i+1)st lens units are made to vary properly and the ratio of the focal length of the fourth lens unit to the longest focal length of the entire system is made to have a proper value. In particular, a zoom lens is disclosed wherein the second lens unit is made to decenter to stabilize the image.
    Type: Application
    Filed: October 20, 1998
    Publication date: October 18, 2001
    Inventors: SHINGO HAYAKAWA, KAZUHIKO MOMOKI
  • Patent number: 6144502
    Abstract: A viewfinder optical system includes an image inverting optical unit for inverting an image formed by an objective optical unit, the image inverting optical unit inverting the image by using a reflecting action of light, and an eyepiece optical unit on which light from the image inverting optical unit is made incident, wherein the viewfinder optical system has a diffractive optical surface.
    Type: Grant
    Filed: December 22, 1998
    Date of Patent: November 7, 2000
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shingo Hayakawa, Hiroshi Saito
  • Patent number: 6124972
    Abstract: A zoom lens is disclosed comprising, from front to rear, a first lens unit of positive refractive power, a second lens unit of negative refractive power, a third lens unit of positive refractive power, a fourth lens unit of negative refractive power, a fifth lens unit of positive refractive power and a sixth lens unit of negative refractive power, wherein, during zooming from the wide-angle end to the telephoto end, the air separations between the i-th and (i+1)st lens units are made to vary properly and the ratio of the focal length of the fourth lens unit to the longest focal length of the entire system is made to have a proper value. In particular, a zoom lens is disclosed wherein the second lens unit is made to decenter to stabilize the image.
    Type: Grant
    Filed: March 15, 1995
    Date of Patent: September 26, 2000
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shingo Hayakawa, Kazuhiko Momoki