Patents by Inventor Hiroto Nozawa

Hiroto Nozawa 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: 9970885
    Abstract: An inspection apparatus and an inspection method capable of performing an inspection more accurately are provided. An inspection apparatus according to the present invention includes a light source 10 that illuminates a sample 30 in which a pattern is formed, a detector 11 that detects light reflected from the sample 30 illuminated by the light source, and a processing device 50 that performs an inspection based on a correlation between a brightness value of a sample image obtained by the detector and a size in a surface shape or a size in a width direction of the pattern of the sample 30. The processing device 50 performs the inspection based on a summation value obtained by adding up brightness values of sample images with weights, the sample images being obtained under a plurality of shooting conditions.
    Type: Grant
    Filed: November 21, 2014
    Date of Patent: May 15, 2018
    Assignee: Lasertec Corporation
    Inventors: Hiroto Nozawa, Kuniaki Takeda, Kenshi Ishiwatari, Takamasa Tsubouchi, Ryoichiro Satoh
  • Patent number: 9544558
    Abstract: Provided is a phase shift amount measuring apparatus and method capable of measuring a phase shift amount and a transmittance of a phase shift mask in one measurement step by using a miniaturized monitor pattern. The phase shift amount and transmittance of the monitor pattern are simultaneously measured using a shearing interferometer. The phase shift amount is obtained from a phase difference of interference light between light passing through the monitor pattern and light passing through a non-pattern area. The transmittance of the monitor pattern is obtained using an amplitude of interference light between light passing through the monitor pattern and light passing through the non-pattern area and an amplitude of interference light between light beams passing through the non-pattern area. The use of common interference images in measuring the phase shift amount and transmittance enables measurement of both the phase shift amount and the transmittance in one measurement operation.
    Type: Grant
    Filed: December 2, 2014
    Date of Patent: January 10, 2017
    Assignee: Lasertec Corporation
    Inventors: Koyo Tada, Hiroto Nozawa, Hideo Takizawa
  • Publication number: 20150304616
    Abstract: Provided is a phase shift amount measuring apparatus and method capable of measuring a phase shift amount and a transmittance of a phase shift mask in one measurement step by using a miniaturized monitor pattern. The phase shift amount and transmittance of the monitor pattern are simultaneously measured using a shearing interferometer. The phase shift amount is obtained from a phase difference of interference light between light passing through the monitor pattern and light passing through a non-pattern area. The transmittance of the monitor pattern is obtained using an amplitude of interference light between light passing through the monitor pattern and light passing through the non-pattern area and an amplitude of interference light between light beams passing through the non-pattern area. The use of common interference images in measuring the phase shift amount and transmittance enables measurement of both the phase shift amount and the transmittance in one measurement operation.
    Type: Application
    Filed: December 2, 2014
    Publication date: October 22, 2015
    Inventors: Koyo TADA, Hiroto NOZAWA, Hideo TAKIZAWA
  • Publication number: 20150144769
    Abstract: An inspection apparatus and an inspection method capable of performing an inspection more accurately are provided. An inspection apparatus according to the present invention includes a light source 10 that illuminates a sample 30 in which a pattern is formed, a detector 11 that detects light reflected from the sample 30 illuminated by the light source, and a processing device 50 that performs an inspection based on a correlation between a brightness value of a sample image obtained by the detector and a size in a surface shape or a size in a width direction of the pattern of the sample 30. The processing device 50 performs the inspection based on a summation value obtained by adding up brightness values of sample images with weights, the sample images being obtained under a plurality of shooting conditions.
    Type: Application
    Filed: November 21, 2014
    Publication date: May 28, 2015
    Inventors: Hiroto NOZAWA, Kuniaki TAKEDA, Kenshi ISHIWATARI, Takamasa TSUBOUCHI, Ryoichiro SATOH
  • Patent number: 8696216
    Abstract: An optical module has a support board, an optical transmission path, and at least a single optical element having a light receiving function or a light emitting function provided on the support board. A light emission surface of the optical transmission path or a light incidence surface of the optical transmission path is arranged such that the optical element and the optical transmission path are optically coupled to each other, with respect to a light receiving surface or a light emitting surface of the optical element. The optical element is sealed by a sealing agent. A gap is provided between the optical transmission path and the surface of the sealing agent on the light receiving surface or the light emitting surface of the optical element.
    Type: Grant
    Filed: April 12, 2007
    Date of Patent: April 15, 2014
    Assignee: OMRON Corporation
    Inventors: Akihiko Sano, Hiroto Nozawa, Toshiaki Okuno, Junichi Tanaka, Naru Yasuda, Hayami Hosokawa
  • Patent number: 8218917
    Abstract: An integrally molding die for manufacturing a package includes a supporting portion for supporting at least one end including an incident/exit port of a light signal in a light transmission path, and a lead frame for mounting an optical element. The integrally molding die includes a recess for forming the supporting portion, a first projection, which comes into contact with an optical element mounting surface of the lead frame, and a second projection, which comes into contact with a back surface of the optical element mounting surface.
    Type: Grant
    Filed: March 7, 2008
    Date of Patent: July 10, 2012
    Assignee: OMRON Corporation
    Inventors: Akihiko Sano, Hiroto Nozawa, Naru Yasuda, Hayami Hosokawa
  • Patent number: 8052337
    Abstract: An optical module (1) including a light receiving/emitting element (3) for transmitting or receiving an optical signal, an optical waveguide (2) having a core part made of a material with translucency and a clad part made of a material having an index of refraction different from an index of refraction of the core part for optically coupling with the light receiving/emitting element (3) and transmitting the optical signal, and a package (5) for accommodating at least one end including an entrance/exit port (2c) of the optical signal in the optical waveguide (2) and the light receiving/emitting element (3); wherein a surface on a side facing a bottom plate mounted with the light receiving/emitting element (3) in the package (5) at the end of the optical waveguide (2) accommodated in the package (5) is configured by a first region including a portion projected into a space inside the package (5), and a second region different from the first region; and the package (5) includes a supporting part (5a) for support
    Type: Grant
    Filed: December 28, 2006
    Date of Patent: November 8, 2011
    Assignee: OMRON Corporation
    Inventors: Hiroshi Sameshima, Takayoshi Koike, Naru Yasuda, Hayami Hosokawa, Hiroto Nozawa
  • Publication number: 20100303412
    Abstract: An optical transmission module has a light-emitting element, a light-receiving element, and an optical path for optically coupling the light-emitting element and the light-receiving element, and transmitting a optical signal. The optical path has a core part, a clad part surrounding the core part, and a support board for supporting the optical path itself and the light-receiving element. A resin part formed of resin having a refractive index higher than air outside the optical path is arranged at a part of a surface area of the clad part along an optical transmission direction to which optical signals are transmitted. The resin part has an inclined surface in which the surface on the opposite side of the clad part is tilted relative to the optical transmission direction. The inclined surface forms an acute angle with the surface of the clad part at the opposite side of the light-receiving element in the resin part.
    Type: Application
    Filed: January 17, 2008
    Publication date: December 2, 2010
    Applicant: OMRON CORPORATION
    Inventors: Toshiaki Okuno, Junichi Tanaka, Hiroto Nozawa, Naru Yasuda, Hayami Hosokawa
  • Publication number: 20100104240
    Abstract: An integrally molding die for manufacturing a package includes a supporting portion for supporting at least one end including an incident/exit port of a light signal in a light transmission path, and a lead frame for mounting an optical element. The integrally molding die includes a recess for forming the supporting portion, a first projection, which comes into contact with an optical element mounting surface of the lead frame, and a second projection, which comes into contact with a back surface of the optical element mounting surface.
    Type: Application
    Filed: March 7, 2008
    Publication date: April 29, 2010
    Applicant: OMRON CORPORATION
    Inventors: Akihiko Sano, Hiroto Nozawa, Naru Yasuda, Hayami Hosokawa
  • Patent number: 7657140
    Abstract: An optical cable module has an optical waveguide formed by surrounding a core with a clad layer and a light-receiving/emitting element, installed on a supporting substrate. A light-releasing face of the optical waveguide or a light-incident face to the optical waveguide is aligned so as to face a light-receiving face or a light-emitting face of the light-receiving/emitting element. The optical waveguide is formed into a film shape having flexibility, and provided with a reinforcing member that prevents a deflection from occurring in the optical waveguide. The optical waveguide is placed on a protruding portion from a supporting face of the optical waveguide on the supporting substrate.
    Type: Grant
    Filed: April 9, 2007
    Date of Patent: February 2, 2010
    Assignee: OMRON Corporation
    Inventors: Toshiaki Okuno, Hayami Hosokawa, Naru Yasuda, Akihiko Sano, Junichi Tanaka, Hiroto Nozawa, Hirokatsu Nakayama
  • Publication number: 20090274412
    Abstract: An optical module comprising has a support board, an optical transmission path, and at least a single optical element having a light receiving function or a light emitting function provided on the support board. A light emission surface of said optical transmission path or a light incidence surface of the optical transmission path is arranged such that said optical element and said optical transmission path are optically coupled to each other, with respect to a light receiving surface or a light emitting surface of said optical element. Said optical element is sealed by a sealing agent. A gap is provided between said optical transmission path and the surface of said sealing agent on the light receiving surface or the light emitting surface of said optical element.
    Type: Application
    Filed: April 12, 2007
    Publication date: November 5, 2009
    Applicant: OMRON CORPORATION
    Inventors: Akihiko Sano, Hiroto Nozawa, Toshiaki Okuno, Junichi Tanaka, Naru Yasuda, Hayami Hosokawa
  • Publication number: 20090202199
    Abstract: An optical module (1) including a light receiving/emitting element (3) for transmitting or receiving an optical signal, an optical waveguide (2) having a core part made of a material with translucency and a clad part made of a material having an index of refraction different from an index of refraction of the core part for optically coupling with the light receiving/emitting element (3) and transmitting the optical signal, and a package (5) for accommodating at least one end including an entrance/exit port (2c) of the optical signal in the optical waveguide (2) and the light receiving/emitting element (3); wherein a surface on a side facing a bottom plate mounted with the light receiving/emitting element (3) in the package (5) at the end of the optical waveguide (2) accommodated in the package (5) is configured by a first region including a portion projected into a space inside the package (5), and a second region different from the first region; and the package (5) includes a supporting part (5a) for support
    Type: Application
    Filed: December 28, 2006
    Publication date: August 13, 2009
    Applicant: OMRON CORPORATION
    Inventors: Hiroshi Sameshima, Takayoshi Koike, Naru Yasuda, Hayami Hosokawa, Hiroto Nozawa
  • Publication number: 20090110350
    Abstract: An optical cable module has an optical waveguide formed by surrounding a core with a clad layer and a light-receiving/emitting element, installed on a supporting substrate. A light-releasing face of the optical waveguide or a light-incident face to the optical waveguide is aligned so as to face a light-receiving face or a light-emitting face of the light-receiving/emitting element. The optical waveguide is formed into a film shape having flexibility, and provided with a reinforcing member that prevents a deflection from occurring in the optical waveguide. The optical waveguide is placed on a protruding portion from a supporting face of the optical waveguide on the supporting substrate.
    Type: Application
    Filed: April 9, 2007
    Publication date: April 30, 2009
    Applicant: OMRON CORPORATION
    Inventors: Toshiaki Okuno, Hayami Hosokawa, Naru Yasuda, Akihiko Sano, Junichi Tanaka, Hiroto Nozawa, Hirokatsu Nakayama
  • Patent number: 7174081
    Abstract: An optical waveguide device includes a first substrate, where the first substrate includes a first plate and an optical waveguide region disposed on the first plate, and where the optical waveguide region includes a core for transmitting light and a cladding surrounding the core. The optical waveguide device further includes a second substrate, where the second substrate includes a second plate having a spacer. Additionally, a surface including the optical waveguide region of the first substrate opposes a surface including the spacer of the second substrate, the spacer is formed the region which is out of the core of the first substrate, a top surface of the spacer is in contact with the first substrate, the first substrate and the second substrate are bound with adhesive material, and the entire surface of the core is in contact with the adhesive material.
    Type: Grant
    Filed: December 20, 2005
    Date of Patent: February 6, 2007
    Assignee: Omron Corporation
    Inventors: Kazuyuki Hayamizu, Yoshiyuki Komura, Yukari Terakawa, Hayami Hosokawa, Toshiyuki Takahashi, Masayoshi Higuchi, Yoshitaka Tatara, Naru Yasuda, Hiroto Nozawa
  • Patent number: 7113683
    Abstract: A method of manufacturing an optical waveguide device includes providing an optical fiber guide for fixing an optical fiber and optical element placing portions for providing element mounting benches outside a waveguide fixing region of a silicon substrate. A metallic thin film is formed outside the waveguide fixing region of the silicon substrate. After an optical waveguide substrate is bonded to a whole of an upper surface of the silicon substrate through a bonding resin which will become an upper cladding layer, the optical waveguide substrate is diced along an edge of the waveguide fixing region, and the optical waveguide substrate outside the waveguide fixing region is removed to expose the optical fiber guide and the optical element placing portions.
    Type: Grant
    Filed: December 20, 2005
    Date of Patent: September 26, 2006
    Assignee: OMRON Corporation
    Inventors: Kazuyuki Hayamizu, Yoshiyuki Komura, Yukari Terakawa, Hayami Hosokawa, Toshiyuki Takahashi, Masayoshi Higuchi, Yoshitaka Tatara, Naru Yasuda, Hiroto Nozawa
  • Publication number: 20060110098
    Abstract: A method of manufacturing an optical waveguide device includes providing an optical fiber guide for fixing an optical fiber and optical element placing portions for providing element mounting benches outside a waveguide fixing region of a silicon substrate. A metallic thin film is formed outside the waveguide fixing region of the silicon substrate. After an optical waveguide substrate is bonded to a whole of an upper surface of the silicon substrate through a bonding resin which will become an upper cladding layer, the optical waveguide substrate is diced along an edge of the waveguide fixing region, and the optical waveguide substrate outside the waveguide fixing region is removed to expose the optical fiber guide and the optical element placing portions.
    Type: Application
    Filed: December 20, 2005
    Publication date: May 25, 2006
    Applicant: OMRON Corporation
    Inventors: Kazuyuki Hayamizu, Yoshiyuki Komura, Yukari Terakawa, Hayami Hosokawa, Toshiyuki Takahashi, Masayoshi Higuchi, Yoshitaka Tatara, Naru Yasuda, Hiroto Nozawa
  • Publication number: 20060104587
    Abstract: A method of manufacturing an optical waveguide device includes providing an optical fiber guide for fixing an optical fiber and optical element placing portions for providing element mounting benches outside a waveguide fixing region of a silicon substrate. A metallic thin film is formed outside the waveguide fixing region of the silicon substrate. After an optical waveguide substrate is bonded to a whole of an upper surface of the silicon substrate through a bonding resin which will become an upper cladding layer, the optical waveguide substrate is diced along an edge of the waveguide fixing region, and the optical waveguide substrate outside the waveguide fixing region is removed to expose the optical fiber guide and the optical element placing portions.
    Type: Application
    Filed: December 20, 2005
    Publication date: May 18, 2006
    Inventors: Kazuyuki Hayamizu, Yoshiyuki Komura, Yukari Terakawa, Hayami Hosokawa, Toshiyuki Takahashi, Masayoshi Higuchi, Yoshitaka Tatara, Naru Yasuda, Hiroto Nozawa
  • Patent number: 7013055
    Abstract: A method of manufacturing an optical waveguide device includes providing an optical fiber guide for fixing an optical fiber and optical element placing portions for providing element mounting benches outside a waveguide fixing region of a silicon substrate. A metallic thin film is formed outside the waveguide fixing region of the silicon substrate. After an optical waveguide substrate is bonded to a whole of an upper surface of the silicon substrate through a bonding resin which will become an upper cladding layer, the optical waveguide substrate is diced along an edge of the waveguide fixing region, and the optical waveguide substrate outside the waveguide fixing region is removed to expose the optical fiber guide and the optical element placing portions.
    Type: Grant
    Filed: July 1, 2003
    Date of Patent: March 14, 2006
    Assignee: Omron Corporation
    Inventors: Kazuyuki Hayamizu, Yoshiyuki Komura, Yukari Terakawa, Hayami Hosokawa, Toshiyuki Takahashi, Masayoshi Higuchi, Yoshitaka Tatara, Naru Yasuda, Hiroto Nozawa
  • Publication number: 20040184702
    Abstract: A method of manufacturing an optical waveguide device includes providing an optical fiber guide for fixing an optical fiber and optical element placing portions for providing element mounting benches outside a waveguide fixing region of a silicon substrate. A metallic thin film is formed outside the waveguide fixing region of the silicon substrate. After an optical waveguide substrate is bonded to a whole of an upper surface of the silicon substrate through a bonding resin which will become an upper cladding layer, the optical waveguide substrate is diced along an edge of the waveguide fixing region, and the optical waveguide substrate outside the waveguide fixing region is removed to expose the optical fiber guide and the optical element placing portions.
    Type: Application
    Filed: July 1, 2003
    Publication date: September 23, 2004
    Inventors: Kazuyuki Hayamizu, Yoshiyuki Komura, Yukari Terakawa, Hayami Hosokawa, Toshiyuki Takahashi, Masayoshi Higuchi, Yoshitaka Tatara, Naru Yasuda, Hiroto Nozawa
  • Patent number: D605127
    Type: Grant
    Filed: April 5, 2007
    Date of Patent: December 1, 2009
    Assignee: Omron Corporation
    Inventors: Naru Yasuda, Hiroto Nozawa, Hiroshi Sameshima, Akira Enami, Yoshihisa Ishida