Patents by Inventor Jun-ichi Kodaira

Jun-ichi Kodaira 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: 6756581
    Abstract: The present invention is directed to a deviation detecting device that detects a deviation angle of a rotary unit of a laser light projector relative to a projector body. The deviation detecting device (190) includes a light emitter (193) attached to the projector body of the laser light projector for emitting laser light, a reflector (195) attached to the rotary unit of the laser light projector for reflecting light emitted from the light emitter, and a light receiving unit (194) attached to the projector body of the laser light projector for receiving the light reflected by the reflector. In the deviation detecting device, a position at which the light reflected by the reflector is incident upon the light receiving unit is utilized to determine a deviation angle of the rotary unit relative to the projector body.
    Type: Grant
    Filed: December 4, 2001
    Date of Patent: June 29, 2004
    Assignee: Kabushiki Kaisha Topcon
    Inventors: Fumio Ohtomo, Jun-ichi Kodaira
  • Publication number: 20040107589
    Abstract: The present invention provides a laser sighting device, which comprises a tilt detecting device having a liquid member for forming a free liquid surface and a fixed reflection member fixedly mounted, the tilt detecting device being used for detecting angular deviation between the free liquid surface and the fixed reflection member, a main unit for accommodating the tilt detecting device, and a laser beam irradiation unit removably mounted on the main unit.
    Type: Application
    Filed: October 29, 2003
    Publication date: June 10, 2004
    Inventors: Fumio Ohtomo, Jun-Ichi Kodaira
  • Publication number: 20040050830
    Abstract: A laser irradiating system, comprising a light source for emitting a laser beam in elliptical shape, a light source holder for holding the light source, a base for rotatably supporting the light source holder, a first driving unit for rotating the light source holder, a deflecting optical means for deflecting the laser beam from the light source in a direction perpendicular to an optical axis, a rotator holder for holding the deflecting optical means and being rotatable around the optical axis of the light source, a cylindrical lens being arranged so that a center of the cylindrical lens is aligned with the optical axis and the laser beam from the deflecting optical means enters perpendicularly to the optical axis and for diffusing the transmitting laser beam to a fan-shaped laser beam, a control unit for controlling the first driving unit and a receiver for receiving a signal for remote-control operation, wherein an irradiating direction of the fan-shaped laser beam can be operated in remote control operatio
    Type: Application
    Filed: July 8, 2003
    Publication date: March 18, 2004
    Inventors: Fumio Ohtomo, Jun-ichi Kodaira
  • Publication number: 20040027554
    Abstract: A light wave distance-measuring system, comprising a projection optical system having an optical axis of outgoing light and for projecting a measuring light, and a photodetection optical system having an optical axis of a returning light and for receiving a reflection light, wherein the photodetection optical system comprises a light receiving lens for receiving and for converging the reflection light, a light receiving surface where the reflection light enters, and a ring-like perforated multi-focal optical member arranged between the light receiving surface and the light receiving lens and for converging the light to the light receiving surface.
    Type: Application
    Filed: August 4, 2003
    Publication date: February 12, 2004
    Inventors: Ikuo Ishinabe, Jun-Ichi Kodaira
  • Patent number: 6679609
    Abstract: A laser beam irradiation device, comprising a light source for emitting a laser beam, a cylindrical lens, an optical system for entering the laser beam to the cylindrical lens perpendicularly with respect to a center line of the cylindrical lens, and a luminous flux rotating means for rotating the incident laser beam around an optical axis of the laser beam.
    Type: Grant
    Filed: March 13, 2002
    Date of Patent: January 20, 2004
    Assignee: Kabushiki Kaisha Topcon
    Inventors: Fumio Ohtomo, Jun-ichi Kodaira
  • Patent number: 6675489
    Abstract: The present invention provides a laser sighting device, which comprises a tilt detecting device having a liquid member for forming a free liquid surface and a fixed reflection member fixedly mounted, the tilt detecting device being used for detecting angular deviation between the free liquid surface and the fixed reflection member, a main unit for accommodating the tilt detecting device, and a laser beam irradiation unit removably mounted on the main unit.
    Type: Grant
    Filed: March 13, 2002
    Date of Patent: January 13, 2004
    Assignee: Kabushiki Kaisha TOPCON
    Inventors: Fumio Ohtomo, Jun-ichi Kodaira
  • Patent number: 6649927
    Abstract: A tilt detecting device for detecting tilt by a reflection light from a free liquid surface, comprising a photodetection element, a liquid member for forming the free liquid surface, a fixed reflection member fixed on a structural member, a free liquid surface light projecting system for projecting a light toward the liquid member, a fixed reflection member light projecting system for projecting a light toward the fixed reflection member, a photodetection optical system for guiding the reflection light from the free liquid surface of the liquid member and a reflection light from the fixed reflection member toward the photodetection element, and an arithmetic processing unit for calculating deviation based on two reflection images received by the photodetection element.
    Type: Grant
    Filed: March 4, 2002
    Date of Patent: November 18, 2003
    Assignee: Kabushiki Kaisha TOPCON
    Inventors: Fumio Ohtomo, Jun-ichi Kodaira
  • Patent number: 6646732
    Abstract: A position determining system is disclosed, which has a simplified configuration capable of producing a plurality of phantom planes simultaneously. The improved system according to the present invention consists of a light receiving and sensing device that includes a body having means for sending data on elevation- and depression-angles and horizontal angles, and a phantom plane determining function for determining phantom planes, so as to display or output differential angles of elevations and depressions in relation with the phantom surfaces produced from the data received from the body.
    Type: Grant
    Filed: July 19, 2001
    Date of Patent: November 11, 2003
    Assignee: Kabushiki Kaisha Topcon
    Inventors: Fumio Ohtomo, Kunihiro Hayashi, Jun-ichi Kodaira, Kazuki Osaragi
  • Publication number: 20030123153
    Abstract: A line laser device, comprising a light source for emitting a laser beam, a light emitting unit having optical means for projecting the laser beam from the light source in fan-like shape, an optical member arranged on the fan-shaped laser beam and for forming a spot light on a part of the fan-shaped laser beam, and support means for supporting the optical member so that the spot light formed on the fan-shaped laser beam can be shifted.
    Type: Application
    Filed: December 16, 2002
    Publication date: July 3, 2003
    Inventors: Fumio Ohtomo, Jun-Ichi Kodaira
  • Publication number: 20030009891
    Abstract: A laser sighting device, comprising a light emitter holder, a rotator holder rotatably mounted on the light emitter holder, a laser light source mounted on the light emitter holder and for emitting a laser beam on an emitted light optical axis along a rotation center of the rotator holder, and an optical path deflecting component mounted on the rotator holder and for deflecting the laser beam projected from the laser light source in a direction perpendicular to the emitted light optical axis.
    Type: Application
    Filed: June 26, 2002
    Publication date: January 16, 2003
    Inventors: Fumio Ohtomo, Jun-Ichi Kodaira
  • Patent number: 6493067
    Abstract: The rotary laser irradiating system according to the present invention comprises a main unit, a rotator rotatably mounted on said main unit, and a range-finding unit disposed on said main unit, wherein said main unit comprises a light emitting unit for emitting a laser beam, optical means for directing said laser beam and a range-finding light from said range-finding unit toward said rotator, and tilt sensors for detecting horizontality and verticality of a rotation axis of said rotator, said rotator comprises deflecting means for deflecting the laser beam and the range-finding light from said optical means and rotating position detecting means for detecting a rotating position of the rotator, and said rotating position detecting means being designed to project said laser beam and said range-finding light in a predetermined direction.
    Type: Grant
    Filed: December 28, 1999
    Date of Patent: December 10, 2002
    Assignee: Kabushiki Kaisha Topcon
    Inventors: Jun-ichi Kodaira, Fumio Ohtomo
  • Patent number: 6483106
    Abstract: The present invention provides a rotary laser irradiating system, which comprises a laser light source, a range-finding unit, a rotator for irradiating a laser beam from the laser light source and a range-finding light from the range-finding unit onto a reference plane by rotary irradiation, and scanning means for deflecting the laser beam from the laser light source on the reference plane.
    Type: Grant
    Filed: January 5, 2000
    Date of Patent: November 19, 2002
    Assignee: Kabushiki Kaisha TOPCON
    Inventors: Fumio Ohtomo, Jun-ichi Kodaira
  • Publication number: 20020138996
    Abstract: A laser beam irradiation device, comprising a light source for emitting a laser beam, a cylindrical lens, an optical system for entering the laser beam to the cylindrical lens perpendicularly with respect to a center line of the cylindrical lens, and a luminous flux rotating means for rotating the incident laser beam around an optical axis of the laser beam.
    Type: Application
    Filed: March 13, 2002
    Publication date: October 3, 2002
    Inventors: Fumio Ohtomo, Jun-Ichi Kodaira
  • Publication number: 20020139940
    Abstract: A tilt detecting device for detecting tilt by a reflection light from a free liquid surface, comprising a photodetection element, a liquid member for forming the free liquid surface, a fixed reflection member fixed on a structural member, a free liquid surface light projecting system for projecting a light toward the liquid member, a fixed reflection member light projecting system for projecting a light toward the fixed reflection member, a photodetection optical system for guiding the reflection light from the free liquid surface of the liquid member and a reflection light from the fixed reflection member toward the photodetection element, and an arithmetic processing unit for calculating deviation based on two reflection images received by the photodetection element.
    Type: Application
    Filed: March 4, 2002
    Publication date: October 3, 2002
    Inventors: Fumio Ohtomo, Jun-ichi Kodaira
  • Publication number: 20020138997
    Abstract: The present invention provides a laser sighting device, which comprises a tilt detecting device having a liquid member for forming a free liquid surface and a fixed reflection member fixedly mounted, the tilt detecting device being used for detecting angular deviation between the free liquid surface and the fixed reflection member, a main unit for accommodating the tilt detecting device, and a laser beam irradiation unit removably mounted on the main unit.
    Type: Application
    Filed: March 13, 2002
    Publication date: October 3, 2002
    Inventors: Fumio Ohtomo, Jun-ichi Kodaira
  • Publication number: 20020092978
    Abstract: The present invention is directed to a deviation detecting device that detects a deviation angle of a rotary unit of a laser light projector relative to a projector body. The deviation detecting device (190) includes a light emitter (193) attached to the projector body of the laser light projector for emitting laser light, a reflector (195) attached to the rotary unit of the laser light projector for reflecting light emitted from the light emitter, and a light receiving unit (194) attached to the projector body of the laser light projector for receiving the light reflected by the reflector. In the deviation detecting device, a position at which the light reflected by the reflector is incident upon the light receiving unit is utilized to determine a deviation angle of the rotary unit relative to the projector body.
    Type: Application
    Filed: December 4, 2001
    Publication date: July 18, 2002
    Inventors: Fumio Ohtomo, Jun-Ichi Kodaira
  • Publication number: 20020060788
    Abstract: The present invention is directed to a position determining system (100) of reduced errors in measurements and determination of surfaces even if a rotary light source emitting laser beam rotates unevenly. The position determining system is comprised of a rotary light source rotating and emitting laser beams (b1, b2, b3), an encoder detecting a rotation position of the rotary light source, and a transfer means transmitting data detected by the encoder, and the system particularly comprises at least two rotary laser devices (151, 152) disposed separate from each other, a light sensor (154) having a light receiving unit that receives the laser beams emitted from the rotary laser devices, so that a position of the light sensor is determined depending upon the laser beams incident upon the light receiving unit and information transmitted by the transfer means.
    Type: Application
    Filed: October 2, 2001
    Publication date: May 23, 2002
    Inventors: Fumio Ohtomo, Kunihiro Hayashi, Jun-Ichi Kodaira, Kazuki Osaragi
  • Publication number: 20020057426
    Abstract: A position determining system is disclosed, which has a simplified configuration capable of producing a plurality of phantom planes simultaneously. The improved system according to the present invention consists of a light receiving and sensing device that includes a body having means for sending data on elevation- and depression-angles and horizontal angles, and a phantom plane determining function for determining phantom planes, so as to display or output differential angles of elevations and depressions in relation with the phantom surfaces produced from the data received from the body.
    Type: Application
    Filed: July 19, 2001
    Publication date: May 16, 2002
    Inventors: Fumio Ohtomo, Kunihiro Hayashi, Jun-ichi Kodaira, Kazuki Osaragi
  • Patent number: 6253457
    Abstract: A laser beam direction correcting optical system for a surveying instrument comprises a laser light source (1) for emitting a laser beam, an exit angle correcting system (17) for correcting an exit angle of the laser beam emerging therefrom in accordance with an inclination of an instrument main body so that the laser beam is oriented in a specific direction, and an incident angle correcting system provided between the laser light source (1) and the exit angle correcting system (17) to correct an incident angle of the laser beam incident upon the exit angle correcting system in accordance with the inclination of the instrument main body. The exit angle correcting system (17) comprises an objective lens (19), the objective lens (19) being constituted by a variable-focus lens in which a position of a principal plane thereof on an optical axis thereof is fixed and also which can vary a position at which an image of the laser beam is formed.
    Type: Grant
    Filed: August 26, 1998
    Date of Patent: July 3, 2001
    Assignee: Kabushiki Kaisha Topcon
    Inventors: Fumio Ohtomo, Ikuo Ishinabe, Jun-ichi Kodaira
  • Patent number: 6166802
    Abstract: A reference beam detector according to the invention can be used to accurately and efficiently perform a level shifting operation by means of a reference beam and effectively eliminate the use of markers and other devices that are structurally simple but entail cumbersome operations and also the use of a level shifter. The beam detector comprises a detector main body having a beam receiving section for detecting an emitted laser beam, a display section for displaying the position of receiving the emitted beam relative to the reference position of the beam receiving section and a slidable index section having an index for indicating the position relative to the reference position.
    Type: Grant
    Filed: August 25, 1998
    Date of Patent: December 26, 2000
    Assignee: Kabushiki Kaisha Topcon
    Inventors: Jun-ichi Kodaira, Takaaki Yamazaki