Patents by Inventor Hiroshi Akiyama

Hiroshi Akiyama 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).

  • Publication number: 20120001085
    Abstract: In a particle therapy treatment planning system for creating treatment plan data, the movement of a target (patient's affected area) is extracted from plural tomography images of the target, and the direction of scanning is determined by projecting the extracted movement on a scanning plane scanned by scanning magnets. Irradiation positions are arranged on straight lines parallel with the scanning direction making it possible to calculate a scanning path for causing scanning to be made mainly along the direction of movement of the target. The treatment planning system can thereby realize dose distribution with improved uniformity.
    Type: Application
    Filed: June 29, 2011
    Publication date: January 5, 2012
    Applicant: HITACHI, LTD.
    Inventors: Rintaro FUJIMOTO, Yoshihiko NAGAMINE, Masumi UMEZAWA, Toru UMEKAWA, Yusuke FUJII, Hiroshi AKIYAMA
  • Publication number: 20110249240
    Abstract: A coupling lens for coupling first light having a first wavelength from a first light source with a second light having a second wavelength from a second light source disposed adjacent to the first light source in substantially the same direction includes a first surface disposed to face the first and second light sources, the first surface including a first region transmitting the first light and having a first region curvature and a second region transmitting the second light and having a second region curvature, and a second surface opposite to the first surface and having a second-surface curvature. A position of a center of the first region curvature differs from a position of a center of the second region curvature. A center of the second surface curvature and the center of the first region curvature are disposed on an optical axis of the first or second light source.
    Type: Application
    Filed: December 15, 2009
    Publication date: October 13, 2011
    Inventors: Yoshitaka Takahashi, Hiroshi Akiyama
  • Publication number: 20110231147
    Abstract: The present invention provides, at low cost, a multilayer radiation detector whose position relative to a beam axis can be verified. The radiation detector includes a plurality of sensors that react to radiation and are stacked in parallel inlayers in a traveling direction of the radiation. The sensors are each sectioned into a central region including the center of the sensor and another region surrounding the central region. The radiation detector independently measures signals measured by the central regions and signals measured by the other regions. Thus, the position of the radiation detector can be verified.
    Type: Application
    Filed: January 25, 2011
    Publication date: September 22, 2011
    Applicant: HITACHI, LTD.
    Inventors: Taisuke TAKAYANAGI, Hideaki NIHONGI, Yusuke FUJII, Hiroshi AKIYAMA, Masahiro TADOKORO, Rintaro FUJIMOTO
  • Patent number: 8023386
    Abstract: An optical pickup apparatus for reproducing information from an optical disk, includes: a semiconductor laser applying a beam to an optical disk having two recording layers through an objective lens; and a light receiving device to which light reflected from the optical disk is directed through the objective lens and a beam splitting device, wherein: the beam splitting device has two first light receiving areas for detecting a push-pull signal and a second light receiving area for detecting a focus error signal, and a configuration is provided such that the center of the optical axis of the reflected light in the beam splitting device is made to lie within the second light receiving area for detecting the focus error signal.
    Type: Grant
    Filed: February 21, 2008
    Date of Patent: September 20, 2011
    Assignee: Ricoh Company, Ltd.
    Inventors: Masahiko Nakayama, Hiroshi Akiyama
  • Patent number: 7990610
    Abstract: An illumination optical system projects an illumination light onto an observation object via an objective lens. A first observation optical system guides the illumination light reflected by the observation object to a first ocular lens. A second observation optical system includes a second ocular lens for observing the reflected light of the illumination light. An optical system drive mechanism rotates the second observation optical system and arranges the second observation optical system between a first position and second position facing each other. A reflecting member is disposed at a position retracted from the illumination light path and the reflected light path and reflects the reflected light in a direction different from the optical axis. A drive mechanism rotates the reflecting member around a rotation axis orthogonal to the optical axis and guides the reflected light to the second observation optical system arranged at the first or second position.
    Type: Grant
    Filed: November 4, 2008
    Date of Patent: August 2, 2011
    Assignee: Kabushiki Kaisha Topcon
    Inventors: Katsuhiro Higuchi, Hiroshi Akiyama
  • Publication number: 20110128602
    Abstract: An optical scan unit (10) is configured to include a light source (11), a divergent light conversion element (12) having such positive power as to convert divergent light from the light source (11) into convergent light to form a spot on a projection plane, an optical deflector (13) deflecting a light beam from the divergent light conversion element (12) to a first scan direction and a second scan direction which is orthogonal to the first scan direction, and a deflection angle conversion element 14 (14) having such negative power as to convert a deflection angle of the light deflected by the optical deflector (13).
    Type: Application
    Filed: June 16, 2009
    Publication date: June 2, 2011
    Inventors: Yukiko Hamano, Hiroshi Akiyama, Yoshitaka Takahashi
  • Publication number: 20110120649
    Abstract: The invention provides a plasma processing apparatus for processing a wafer mounted on a sample stage placed in a vacuum processing chamber using a plasma generated in the vacuum chamber. The plasma processing apparatus comprises a plate placed in the vacuum processing vessel above and opposed to the wafer, the plate having a through hole through which a first processing gas is introduced; a first and second cylindrical member arranged vertically and adjacently; and means communicating with the gap between the first and second cylindrical member for supplying a second processing gas. The wafer is processed while the first processing gas and the second processing gas having different compositions are supplied.
    Type: Application
    Filed: February 2, 2011
    Publication date: May 26, 2011
    Inventors: Kouhei SATOU, Go Miya, Hiroshi Akiyama
  • Patent number: 7887669
    Abstract: The invention provides a plasma processing apparatus for processing a wafer mounted on a sample stage placed in a vacuum processing chamber using a plasma generated in the vacuum chamber. The plasma processing apparatus comprises a plate placed in the vacuum processing vessel above and opposed to the wafer, the plate having a through hole through which a first processing gas is introduced; a first and second cylindrical member arranged vertically and adjacently; and means communicating with the gap between the first and second cylindrical member for supplying a second processing gas. The wafer is processed while the first processing gas and the second processing gas having different compositions are supplied.
    Type: Grant
    Filed: March 7, 2007
    Date of Patent: February 15, 2011
    Assignee: Hitachi High-Technologies Corporation
    Inventors: Kouhei Satou, Go Miya, Hiroshi Akiyama
  • Patent number: 7845662
    Abstract: A front cross member 202 of a rear subframe 53 has a recessed portion 221 which is recessed continuously over a longitudinal direction thereof. The recessed portion 221 is formed at a lower portion of the cross member 202 and is recessed upwardly, and an elastic bush 240 is fitted in a resulting recess. The elastic bush 240 has an elastic element 243 which connects together an inner tube 241 and an outer tube 242 which surrounds the inner tube 231 and is mounted on the rear subframe 53 at the recessed portion 221 as a bracket. The bracket 221 has bracket plate portions 263a, 263b which each have a plane which is brought into contact with an end face of the inner tube and folded-back portions 235, 235. The bracket 221 is disposed in such a manner as to hold therein both ends of the inner tube 241 and is configured such that the elastic bush 240 is mounted thereon by passing a bolt 224 through the inner tube 241.
    Type: Grant
    Filed: June 25, 2009
    Date of Patent: December 7, 2010
    Assignee: Honda Motor Co., Ltd.
    Inventors: Tsutomu Ogawa, Haruyuki Iwasaki, Izuru Hori, Yuichi Nagai, Hiroshi Akiyama, Kunihiko Kimura
  • Publication number: 20100302513
    Abstract: A projection-type image display apparatus for displaying an image on a projected plane, includes light sources each configured to emit a light, a light-path combining element configured to combine light paths of the lights each emitted from the light sources, a light path splitting element configured to split the lights on the combined light path into first and second lights, a scanning mirror configured to reflect the first lights to scan the projected plane with the first lights, a light receiving element configured to receive the second lights to detect light amounts of the received second lights, and a control circuit configured to control the scanning mirror to scan an image forming area of the projected plane with the first lights based on image data and control the light sources so as to reproduce a color based on the image data.
    Type: Application
    Filed: May 28, 2010
    Publication date: December 2, 2010
    Inventors: YOSHITAKA TAKAHASHI, Hiroshi Akiyama
  • Patent number: 7825388
    Abstract: A charged particle beam irradiation system and a charged particle beam extraction method which can prevent erroneous irradiation of a charged particle beam in the direction of advance of the charged particle beam. The system and method are featured in stopping supply of an ion beam to one or more of a plurality of angle zones in each of which a target dose is attained, the angle zones being formed by dividing an RMW in a rotating direction thereof, and in allowing the supply of the ion beam to one or more other angle zones in each of which a target dose is not yet attained. The invention can easily adjust beam doses at various positions in an affected part of the patient body in the direction of advance of the ion beam, and can greatly reduce the probability of erroneous irradiation that the beam dose becomes excessive or deficient at the various positions within the affected part of the patient body in the direction of advance of the ion beam.
    Type: Grant
    Filed: February 23, 2007
    Date of Patent: November 2, 2010
    Assignee: Hitachi, Ltd.
    Inventors: Hideaki Nihongi, Koji Matsuda, Kazuo Hiramoto, Hiroshi Akiyama
  • Publication number: 20100166145
    Abstract: A radiotherapy system achieves highly-accurate respiratory-gated irradiation with less x-ray exposure by performing x-ray imaging only during the respiratory phases that are necessary for the respiratory-gated irradiation. An external respiration monitor 300 externally monitors an external respiratory index of a patient. An x-ray source 200 and an x-ray detector 210, or internal-respiration observation devices, acquire x-ray images of the patient and monitor an internal respiratory index of the patient using the positions of internal body structures indicated by the acquired x-ray images. An x-ray imaging gating device 310 gates the x-ray imaging performed by the internal-respiration observation devices with the use of the external respiratory index such that the x-ray imaging is performed while the external respiratory index is within a predetermined range. An irradiation gating device 410 gates the irradiation of a treatment beam with the use of the internal respiratory index.
    Type: Application
    Filed: December 22, 2009
    Publication date: July 1, 2010
    Applicant: HITACHI, LTD.
    Inventors: Toru UMEKAWA, Yoshihiko NAGAMINE, Toshie SASAKI, Takao KIDANI, Hiroshi AKIYAMA
  • Publication number: 20100167426
    Abstract: The invention provides a method for overcoming the drawbacks of deteriorated throughput, deteriorated reproducibility and plasma discharge instability when continuous discharge is performed during multiple steps of plasma etching. The present invention provides a gas switching method for switching from gas supply source 101 to gas supply source 111, wherein the gas supply source 101 is switched to gas supply source 111 by opening a valve 114 in advance, setting a flow rate of MFC 112 to a flow rate used in the subsequent step, letting the gas supply source 111 to flow toward an exhaust means 5, and closing the valve 114 simultaneously when opening the valve 113, wherein a volume V1 of an area of a gas pipe 115 surrounded by the valve 113, the valve 114 and the MFC 112 is set sufficiently smaller than a volume Vo from the shower plate to the valve 113 including a gas reservoir 10 and a processing gas line 8.
    Type: Application
    Filed: March 12, 2010
    Publication date: July 1, 2010
    Inventors: Naoyuki Kofuji, Hiroshi Akiyama, Kouhei Satou
  • Publication number: 20100112709
    Abstract: A method for accurate and precise measurement of target proteins such as food allergen proteins in the specific foods is provided. The method is a method for immunological measurement of a food allergen protein in a processed food using an antibody against the food allergen protein, comprising adding animal tropomyosin to an assay solution upon measurement.
    Type: Application
    Filed: April 4, 2008
    Publication date: May 6, 2010
    Applicants: Maruha Nichiro Seafoods, Inc., Japan as Rep. by Dir Gen of Nat Inst of Health Sci
    Inventors: Kosuke Seiki, Hiroshi Oda, Hisashi Yoshioka, Hiroshi Akiyama, Tamio Maitani
  • Publication number: 20100101090
    Abstract: A method of making a composite component and the composite component is disclosed. The composite component can comprise multiple portions with different materials. By configuring the composite component with different materials, the weight of the composite component can be reduced while maintaining the strength and support of the composite component for a cockpit assembly. Furthermore, the method provides for an increase in the efficiency of the die casting process used to create the composite component.
    Type: Application
    Filed: October 27, 2008
    Publication date: April 29, 2010
    Inventors: Takashi Nakano, Hiroshi Akiyama, Brent Andrees, Brad Klein, Charles Gagliano, Ryan Joseph Phillips, Steven Behm, Kyle Pearce, Martyn Morrish, Allen Sheldon
  • Patent number: 7680015
    Abstract: A polarizing beam splitter for separating an upstream beam from a downstream beam according to the polarization of an incident beam is provided between first and second light sources emitting laser beams at respective wavelength and an objective lens. A phase plate for providing a phase difference to a beam incident on the polarizing beam splitter is provided between the polarizing beam splitter and the light sources. A portion of the laser beam incident on the polarizing beam splitter is reflected by the polarizing beam splitter and caused to be incident on a photo-detecting unit, so as to prevent an unnecessary portion of the laser beam is incident on the photo-detecting unit. According to the invention, the laser beam is used efficiently and the cost of fabricating an optical disk apparatus is reduced by eliminating a need for a gain controlling circuit in the photo-detecting unit.
    Type: Grant
    Filed: October 1, 2007
    Date of Patent: March 16, 2010
    Assignee: Ricoh Company, Ltd.
    Inventor: Hiroshi Akiyama
  • Patent number: 7680563
    Abstract: A control method which quickly adjusts a plasma processing apparatus to a desired pressure regardless of gas type, gas flow rate or target pressure simply by optimizing constants. The plasma processing apparatus includes: gas supply means which supplies processing gas to a low pressure processing chamber; plasma generating means which supplies electromagnetic energy to the processing gas in the low pressure processing chamber and generates plasma; exhaust means which exhausts gas in the low pressure processing chamber; gas pressure measuring means which measures gas pressure in the low pressure processing chamber; exhaust speed adjusting means which adjusts exhaust speed of gas to be exhausted by the exhaust means; and an arithmetic and control unit calculates an exhaust speed to make the gas pressure measured by the pressure measuring means equal to a target value, and controls the exhaust speed adjusting means according to the calculation result.
    Type: Grant
    Filed: June 25, 2007
    Date of Patent: March 16, 2010
    Assignee: Hitachi High-Technologies Corporation
    Inventors: Naoyuki Kofuji, Hiroshi Akiyama, Masahiro Nagatani
  • Publication number: 20100033685
    Abstract: A lighting device, including a first light source emitting light of a first wavelength; a second light source close to the first source, emitting light of a second wavelength in almost a same direction as that of the first source; a third light source located emitting light of a third wavelength in a direction different from that of the first and second sources; a coupling optical system coupling light from the first and second sources; another coupling optical system coupling light from the third source; and a light path synthesizer synthesizing a light path of light from the first, second and third sources, wherein the light path synthesizer includes a first surface reflecting light from the first source and transmitting light from the second and third sources and a second surface unparallel with the first surface, reflecting light from the second source and transmitting light from the third source.
    Type: Application
    Filed: July 27, 2009
    Publication date: February 11, 2010
    Inventors: Manabu SEO, Hiroshi AKIYAMA, Shigeru OOUCHIDA, Yukiko HAMANO, Goichi AKANUMA
  • Publication number: 20100001212
    Abstract: A charged particle beam irradiation system includes measurement means 15 for measuring an accumulated beam charge amount Qm0, the ion beams orbiting in a synchrotron 13, immediately before an extraction control period in an operating cycle of the synchrotron 13; and beam extraction control means 20, 24, 28, 29 for controlling extraction of the ion beams so that extraction of a total of the ion beams is to be completed in time with expiration of an extraction control time Tex which is set in advance based on the measurement Qm0 of the accumulated beam charge amount. When an irradiation apparatus includes an RMW 32, an amplitude of an extraction radiofrequency voltage is controlled according to a ratio Qm0/Qs0 of the measurement to a reference value of the accumulated beam charge amount and a ratio Tb/Ta of an actual beam extraction time to the extraction control time Tex.
    Type: Application
    Filed: June 24, 2009
    Publication date: January 7, 2010
    Applicant: HITACHI, LTD.
    Inventors: Hideaki NISHIUCHI, Kazuyoshi SAITO, Masahiro TADOKORO, Hiroshi AKIYAMA, Kazuo HIRAMOTO
  • Publication number: 20090322050
    Abstract: A front cross member 202 of a rear subframe 53 has a recessed portion 221 which is recessed continuously over a longitudinal direction thereof. The recessed portion 221 is formed at a lower portion of the cross member 202 and is recessed upwardly, and an elastic bush 240 is fitted in a resulting recess. The elastic bush 240 has an elastic element 243 which connects together an inner tube 241 and an outer tube 242 which surrounds the inner tube 231 and is mounted on the rear subframe 53 at the recessed portion 221 as a bracket. The bracket 221 has bracket plate portions 263a, 263b which each have a plane which is brought into contact with an end face of the inner tube and folded-back portions 235, 235. The bracket 221 is disposed in such a manner as to hold therein both ends of the inner tube 241 and is configured such that the elastic bush 240 is mounted thereon by passing a bolt 224 through the inner tube 241.
    Type: Application
    Filed: June 25, 2009
    Publication date: December 31, 2009
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Tsutomu Ogawa, Haruyuki Iwasaki, Izuru Hori, Yuichi Nagai, Hiroshi Akiyama, Kunihiko Kimura