Patents by Inventor Tetsuji Fujita

Tetsuji Fujita 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: 20160307058
    Abstract: An imaging apparatus includes a light emitting section that emits light toward a subject, and a light receiving element that receives incident light from the subject side. The light emitting section is configured so that the light emitted from the light emitting section along an illumination direction that inclines with respect to a reference direction at an angle greater than 0° and equal to or smaller than 45° has a larger irradiation strength than the light emitted from the light emitting section along the reference direction, the reference direction being a direction perpendicular to a plane that faces the subject.
    Type: Application
    Filed: June 27, 2016
    Publication date: October 20, 2016
    Inventors: Hideto ISHIGURO, Tsukasa EGUCHI, Tetsuji FUJITA, Hidetoshi YAMAMOTO
  • Publication number: 20160242687
    Abstract: A detection method using a detection element, including a first electrode and a second electrode, in which a detection layer containing an enzyme is provided in the first electrode and the second electrode, includes a first step of measuring an electric current generated by decomposition of hydrogen peroxide generated from glucose in the detection layer of the first electrode as an electric current value between the first electrode and the second electrode, and a second step of measuring an electric current generated by decomposition of hydrogen peroxide generated from glucose in the detection layer of the second electrode as an electric current value between the first electrode and the second electrode.
    Type: Application
    Filed: February 9, 2016
    Publication date: August 25, 2016
    Inventors: Tetsuji FUJITA, Yasuhiro MOMOSE
  • Patent number: 9412909
    Abstract: A manufacturing method is a method for manufacturing a light emitting apparatus including a translucent substrate, and a light emitting section and an optical filer section that are arranged in a first region of the substrate when viewed in a normal direction of a first surface of the substrate. The manufacturing method includes: forming a dielectric multilayer film over the first region of the substrate; forming a first electrode on the dielectric multilayer film included in the light emitting section; forming a functional layer with a light emitting layer over the first electrode and the dielectric multilayer film included in the optical filter section; and forming a second electrode having semi-transmissive reflectivity on the functional layer over the first region of the substrate.
    Type: Grant
    Filed: September 21, 2015
    Date of Patent: August 9, 2016
    Assignee: Seiko Epson Corporation
    Inventors: Tetsuji Fujita, Hidetoshi Yamamoto, Hideto Ishiguro, Tsukasa Eguchi
  • Patent number: 9405954
    Abstract: A light receiving section includes light receiving elements. A light source section includes a light emitting section that illuminates the subject and transmissive sections. The light emitting section is provided with a first translucent layer, which includes a light emitting layer, and a reflection layer and a semi-transmissive reflection layer interposing the first translucent layer, so that a resonance structure is formed. Each of the transmissive sections includes a second translucent layer, and a first semi-transmissive reflection layer and a second semi-transmissive reflection layer, which are opposed each other interposing the second translucent layer, so that a resonance structure that resonates incident light from the subject side is formed.
    Type: Grant
    Filed: June 15, 2015
    Date of Patent: August 2, 2016
    Assignee: Seiko Epson Corporation
    Inventors: Hideto Ishiguro, Tsukasa Eguchi, Tetsuji Fujita, Hidetoshi Yamamoto
  • Patent number: 9401460
    Abstract: The light emitting element of the embodiment includes an anode; a cathode; a visible light emitting layer provided between the anode and the cathode and emitting visible light; and a carrier trapping layer containing a thiadiazole based compound represented by the following formula (1). [In formula (1), A indicates a hydrogen atom, an alkyl group, an aryl group which may have a substituent, an arylamino group, or a triaryl amine, and B indicates a hydrogen atom, an alkyl group, an aryl group which may have a substituent, an arylamino group, or a triaryl amine, or may form a ring.
    Type: Grant
    Filed: April 30, 2015
    Date of Patent: July 26, 2016
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Tetsuji Fujita, Hidetoshi Yamamoto
  • Patent number: 9324952
    Abstract: The thiadiazole represented by formula (1), when used as a light-emitting material in a light-emitting element, allows the light-emitting element to emit near-infrared light: wherein, in formula (1), each A independently represents a hydrogen atom, an alkyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted aryl amino group, or a substituted or unsubstituted triarylamine.
    Type: Grant
    Filed: February 21, 2013
    Date of Patent: April 26, 2016
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Hidetoshi Yamamoto, Tetsuji Fujita
  • Patent number: 9287510
    Abstract: The thiadiazole represented by formula (1), when used as a light-emitting material in a light-emitting element, allows the light-emitting element to emit near-infrared light: wherein, in formula (1), each A independently represents a hydrogen atom, an alkyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted aryl amino group, or a substituted or unsubstituted triarylamine.
    Type: Grant
    Filed: February 21, 2013
    Date of Patent: March 15, 2016
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Hidetoshi Yamamoto, Tetsuji Fujita
  • Publication number: 20160035940
    Abstract: A manufacturing method is a method for manufacturing a light emitting apparatus including a translucent substrate, and a light emitting section and an optical filer section that are arranged in a first region of the substrate when viewed in a normal direction of a first surface of the substrate. The manufacturing method includes: forming a dielectric multilayer film over the first region of the substrate; forming a first electrode on the dielectric multilayer film included in the light emitting section; forming a functional layer with a light emitting layer over the first electrode and the dielectric multilayer film included in the optical filter section; and forming a second electrode having semi-transmissive reflectivity on the functional layer over the first region of the substrate.
    Type: Application
    Filed: September 21, 2015
    Publication date: February 4, 2016
    Inventors: Tetsuji FUJITA, Hidetoshi YAMAMOTO, Hideto ISHIGURO, Tsukasa EGUCHI
  • Patent number: 9224928
    Abstract: The light emitting element of the embodiment includes an anode; a cathode; a visible light emitting layer provided between the anode and the cathode and emitting visible light; and a carrier trapping layer containing a thiadiazole based compound represented by the following formula (1). [In formula (1), A indicates a hydrogen atom, an alkyl group, an aryl group which may have a substituent, an arylamino group, or a triaryl amine, and B indicates a hydrogen atom, an alkyl group, an aryl group which may have a substituent, an arylamino group, or a triaryl amine, or may form a ring.
    Type: Grant
    Filed: June 30, 2014
    Date of Patent: December 29, 2015
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Tetsuji Fujita, Hidetoshi Yamamoto
  • Patent number: 9178102
    Abstract: A light emitting apparatus includes a translucent substrate, and a light emitting section and an optical filter section arranged in a first region of the substrate when viewed in a normal direction of a first surface of the substrate. The light emitting section has a laminate structure that includes, on the first surface of the substrate, a dielectric multilayer film, a first electrode, a functional layer with a light emitting layer, and a second electrode having semi-transmissive reflectivity. The optical filter section has a laminate structure that includes, on the first surface of the substrate, the dielectric multilayer film, the functional layer, and the second electrode. The dielectric multilayer film and the functional layer extend over the first region.
    Type: Grant
    Filed: July 15, 2014
    Date of Patent: November 3, 2015
    Assignee: Seiko Epson Corporation
    Inventors: Tetsuji Fujita, Hidetoshi Yamamoto, Hideto Ishiguro, Tsukasa Eguchi
  • Publication number: 20150310249
    Abstract: A light receiving section includes light receiving elements. A light source section includes a light emitting section that illuminates the subject and transmissive sections. The light emitting section is provided with a first translucent layer, which includes a light emitting layer, and a reflection layer and a semi-transmissive reflection layer interposing the first translucent layer, so that a resonance structure is formed. Each of the transmissive sections includes a second translucent layer, and a first semi-transmissive reflection layer and a second semi-transmissive reflection layer, which are opposed each other interposing the second translucent layer, so that a resonance structure that resonates incident light from the subject side is formed.
    Type: Application
    Filed: June 15, 2015
    Publication date: October 29, 2015
    Inventors: Hideto ISHIGURO, Tsukasa EGUCHI, Tetsuji FUJITA, Hidetoshi YAMAMOTO
  • Publication number: 20150295182
    Abstract: A light-emitting element includes an anode, a cathode, and a light emission layer. The light emission layer is arranged between the anode and the cathode and configured to emit light by energization between the anode and the cathode. The light emission layer includes a compound represented by a general formula NIR-D as a light emission material and a compound represented by a formula IRH-1 as a host material of the light emission material. The general formula NIR-D is in which each R independently indicates group comprising a phenyl group, a thiophenyl group, a furyl group, or at least one species of derivatives thereof. The formula IRH-1 is in which n indicates a natural number 1 to 12, and each R independently indicates a hydrogen atom, an alkyl group, an optionally substituted aryl group, or an arylamino group.
    Type: Application
    Filed: April 8, 2015
    Publication date: October 15, 2015
    Inventors: Tetsuji FUJITA, Yuiga HAMADE
  • Patent number: 9159932
    Abstract: A light emitting element including an anode, a cathode, a visible light emitting layer which emits visible light and an infrared light emitting layer which emits infrared light installed between the anode and the cathode is provided. Also, it is preferable that the infrared light emitting layer contain a thiadiazole-based compound as a light emitting material.
    Type: Grant
    Filed: August 1, 2012
    Date of Patent: October 13, 2015
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Tetsuji Fujita, Shunichi Seki, Hidetoshi Yamamoto
  • Publication number: 20150249213
    Abstract: Provided are a light emitting element with a high efficiency and a long life that emits light in a near-infrared region, and a light emitting device, authentication device and electronic device that include the light emitting element. A light emitting element (1) according to one aspect of the invention includes an anode (3), a cathode (8), and a light emitting layer (5) that is provided between the anode (3) and the cathode (8) and that emits light by conducting current between the anode (3) and the cathode (8). The light emitting layer (5) includes a pyrromethene-based boron complex as a light emitting material and a tetracene-based material as a host material for retaining the light emitting material.
    Type: Application
    Filed: February 23, 2015
    Publication date: September 3, 2015
    Inventors: Tetsuji FUJITA, Hidetoshi YAMAMOTO, Yuiga HAMADE
  • Publication number: 20150236226
    Abstract: The light emitting element of the embodiment includes an anode; a cathode; a visible light emitting layer provided between the anode and the cathode and emitting visible light; and a carrier trapping layer containing a thiadiazole based compound represented by the following formula (1). [In formula (1), A indicates a hydrogen atom, an alkyl group, an aryl group which may have a substituent, an arylamino group, or a triaryl amine, and B indicates a hydrogen atom, an alkyl group, an aryl group which may have a substituent, an arylamino group, or a triaryl amine, or may form a ring.
    Type: Application
    Filed: April 30, 2015
    Publication date: August 20, 2015
    Inventors: Tetsuji FUJITA, Hidetoshi YAMAMOTO
  • Publication number: 20150228910
    Abstract: The thiadiazole represented by formula (2) or (4), when used as a light-emitting material in a light-emitting element, allows the light-emitting element to emit near-infrared light: In formulae (2) and (4), each R independently represents a hydrogen atom, an alkyl group, or a substituted or unsubstituted aryl group. There may be a ring formed by a carbon linkage between two adjacent R's.
    Type: Application
    Filed: April 22, 2015
    Publication date: August 13, 2015
    Inventors: Hidetoshi YAMAMOTO, Tetsuji FUJITA
  • Patent number: 9072150
    Abstract: A light emitting element includes a light emitting layer that is provided between an anode, a cathode, an anode, and a cathode, and the light emitting layer is configured to include the compound represented by Formula 1 below and the compound represented by Formula RH-1 below. (In Formula 1, A indicates an aryl group, an arylamino group, or triarylamine that may respectively independently include a hydrogen atom, an alkyl group, and a substituent.) (In Formula IRH-1, n indicates a natural number between 1 and 12, and R represents a substituent or a functional group, and indicates an aryl group or an arylamino group that may respectively independently include a hydrogen atom, an alkyl group, and a substituent.
    Type: Grant
    Filed: April 12, 2012
    Date of Patent: June 30, 2015
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Tetsuji Fujita, Hidetoshi Yamamoto
  • Patent number: 9067952
    Abstract: The thiadiazole represented by formula (2) or (4), when used as a light-emitting material in a light-emitting element, allows the light-emitting element to emit near-infrared light: in formulae (2) and (4), each R independently represents a hydrogen atom, an alkyl group, or a substituted or unsubstituted aryl group. There may be a ring formed by a carbon linkage between two adjacent R's.
    Type: Grant
    Filed: August 1, 2012
    Date of Patent: June 30, 2015
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Hidetoshi Yamamoto, Tetsuji Fujita
  • Patent number: 9064768
    Abstract: A light receiving section is provided with a plurality of light receiving elements. A light source section is arranged in a subject side of the light receiving section, and is provided with a light emitting section that illuminates the subject and a plurality of transmissive sections that transmits incident light to the light receiving section side. The light emitting section is provided with a first translucent layer, which includes a light emitting layer, and a reflection layer and a semi-transmissive reflection layer, which are opposed each other interposing the first translucent layer, so that a resonance structure that resonates irradiation light from the light emitting layer is formed.
    Type: Grant
    Filed: September 30, 2013
    Date of Patent: June 23, 2015
    Assignee: Seiko Epson Corporation
    Inventors: Hideto Ishiguro, Tsukasa Eguchi, Tetsuji Fujita, Hidetoshi Yamamoto
  • Publication number: 20150021627
    Abstract: A light emitting apparatus includes a translucent substrate, and a light emitting section and an optical filter section arranged in a first region of the substrate when viewed in a normal direction of a first surface of the substrate. The light emitting section has a laminate structure that includes, on the first surface of the substrate, a dielectric multilayer film, a first electrode, a functional layer with a light emitting layer, and a second electrode having semi-transmissive reflectivity. The optical filter section has a laminate structure that includes, on the first surface of the substrate, the dielectric multilayer film, the functional layer, and the second electrode. The dielectric multilayer film and the functional layer extend over the first region.
    Type: Application
    Filed: July 15, 2014
    Publication date: January 22, 2015
    Inventors: Tetsuji FUJITA, Hidetoshi YAMAMOTO, Hideto ISHIGURO, Tsukasa EGUCHI