Patents by Inventor Hirokazu Koyama

Hirokazu Koyama 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: 20240110779
    Abstract: A mirror unit 2 includes a mirror device 20 including a base 21 and a movable mirror 22, an optical function member 13, and a fixed mirror 16 that is disposed on a side opposite to the mirror device 20 with respect to the optical function member 13. The mirror device 20 is provided with a light passage portion 24 that constitutes a first portion of an optical path between the beam splitter unit 3 and the fixed mirror 16. The optical function member 13 is provided with a light transmitting portion 14 that constitutes a second portion of the optical path between the beam splitter unit 3 and the fixed mirror 16. A second surface 21b of the base 21 and a third surface 13a of the optical function member 13 are joined to each other.
    Type: Application
    Filed: December 11, 2023
    Publication date: April 4, 2024
    Applicant: HAMAMATSU PHOTONICS K.K.
    Inventors: Tomofumi SUZUKI, Kyosuke KOTANI, Tatsuya SUGIMOTO, Yutaka KURAMOTO, Katsumi SHIBAYAMA, Noburo HOSOKAWA, Hirokazu YAMAMOTO, Takuo KOYAMA
  • Publication number: 20170131445
    Abstract: An object of the invention is to provide an optical film having thermochromic properties capable of regulating the near-infrared shield factor depending on the temperature environment, having a low haze value, and having excellent cracking resistance and adhesiveness even if put to use for an extended period of time, and a method for manufacturing the optical film. The optical film of the invention includes, on a transparent substrate, an optically functional layer containing at least vanadium dioxide-containing fine particles and a binder resin, wherein the number average particle size of all the particles including primary particles and secondary particles of the vanadium dioxide-containing fine particles in the optically functional layer is less than 200 nm.
    Type: Application
    Filed: July 28, 2015
    Publication date: May 11, 2017
    Inventor: Hirokazu KOYAMA
  • Publication number: 20170010396
    Abstract: An optical film includes an optical functional layer on a supporting body containing a cellulose derivative as a major component. The optical functional layer is disposed on at least one surface of a film-like supporting body. The supporting body contains a cellulose derivative having an enhanced breaking elongation, and the supporting body has a breaking elongation of 110% or more of the breaking elongation of a supporting body containing a cellulose derivative whose breaking elongation is not enhanced.
    Type: Application
    Filed: January 23, 2015
    Publication date: January 12, 2017
    Applicant: Konica Minolta, Inc.
    Inventors: Hirokazu Koyama, Hiroshi Kita, Kiyoshi Fukusaka, Hiroyoshi Kiuchi
  • Patent number: 9402299
    Abstract: Disclosed is a transparent electrode which is configured of: a first conductive layer that is composed of a metal or metal oxide fine wire that is formed in a pattern on a substrate; and a second conductive layer that covers the first conductive layer and contains a conductive polymer. The transparent electrode is characterized in that the fine wire of the first conductive layer satisfies the conditions mentioned below. Also disclosed is an organic electronic element. Line width (W): 20-200 ?m Height (H): 0.2-2.0 ?m Aspect ratio: 0.001<H/W?0.1 Coefficient of cross-sectional shape: 0.6<S/(W·H)<0.9 (In this connection, S represents the cross-sectional area of the conductive layer.
    Type: Grant
    Filed: March 11, 2015
    Date of Patent: July 26, 2016
    Assignee: KONICA MINOLTA, INC.
    Inventors: Akihiko Takeda, Hirokazu Koyama
  • Patent number: 9306186
    Abstract: Provided is an organic electronic device exhibiting excellent conductivity and transparency of an electrode, and low driving voltage, together with en excellent storing property and excellent lifetime. Also disclosed is an organic electronic device possessing a transparent substrate and provided thereon, a first transparent electrode, a second electrode and an organic functional layer provided between the first transparent electrode and the second electrode, wherein the first transparent electrode and the second electrode are opposed to each other, and a transparent conductive layer containing a conductive polymer and an aqueous binder is provided between the first transparent electrode and the organic functional layer.
    Type: Grant
    Filed: March 16, 2011
    Date of Patent: April 5, 2016
    Assignee: KONICA MINOLTA, INC.
    Inventors: Takatoshi Suematsu, Hirokazu Koyama
  • Publication number: 20150189732
    Abstract: Disclosed is a transparent electrode which is configured of: a first conductive layer that is composed of a metal or metal oxide fine wire that is formed in a pattern on a substrate; and a second conductive layer that covers the first conductive layer and contains a conductive polymer. The transparent electrode is characterized in that the fine wire of the first conductive layer satisfies the conditions mentioned below. Also disclosed is an organic electronic element. Line width (W): 20-200 ?m Height (H): 0.2-2.0 ?m Aspect ratio: 0.001<H/W?0.1 Coefficient of cross-sectional shape: 0.6<S/(W·H)<0.9 (In this connection, S represents the cross-sectional area of the conductive layer.
    Type: Application
    Filed: March 11, 2015
    Publication date: July 2, 2015
    Inventors: Akihiko TAKEDA, Hirokazu KOYAMA
  • Patent number: 9005747
    Abstract: Disclosed is a transparent electrode which is configured of a first conductive layer that is composed of a metal or metal oxide fine wire that is formed in a pattern on a substrate; and a second conductive layer that covers the first conductive layer and contains a conductive polymer. The transparent electrode is characterized in that the fine wire of the first conductive layer satisfies the conditions mentioned below. Also disclosed is an organic electronic element. Line width (W): 20-200 ?m Height (H): 0.2-2.0 ?m Aspect ratio: 0.001<H/W?0.1 Coefficient of cross-sectional shape: 0.6<S/(W·H)<0.9 (In this connection, S represents the cross-sectional area of the conductive layer.
    Type: Grant
    Filed: March 25, 2011
    Date of Patent: April 14, 2015
    Assignee: Konica Minolta Holdings, Inc.
    Inventors: Akihiko Takeda, Hirokazu Koyama
  • Publication number: 20150061942
    Abstract: Provided is a translucent conductive patterned member in which, as the metal pattern portion itself has a translucency, the metal pattern portion is hardly visible, and scattering caused by a moiré or diffraction is reduced, and in which it is also provided with sufficient conductivity. The translucent conductive patterned member is provided with a base layer formed by using a compound containing a nitrogen atom and a conductive pattern portion having a translucency in which the conductive pattern portion is formed on at least one part of the base layer by using silver or an alloy containing silver as a main component.
    Type: Application
    Filed: April 5, 2013
    Publication date: March 5, 2015
    Inventor: Hirokazu Koyama
  • Publication number: 20130014980
    Abstract: Disclosed is a transparent electrode which is configured of a first conductive layer that is composed of a metal or metal oxide fine wire that is formed in a pattern on a substrate; and a second conductive layer that covers the first conductive layer and contains a conductive polymer. The transparent electrode is characterized in that the fine wire of the first conductive layer satisfies the conditions mentioned below. Also disclosed is an organic electronic element Line width (W): 20-200 ?m Height (H): 0.2-2.0 ?m Aspect ratio: 0.001<H/W?0.1 Coefficient of cross-sectional shape: 0.6<S/(W·H)<0.9 (In this connection, S represents the cross-sectional area of the conductive layer.
    Type: Application
    Filed: March 25, 2011
    Publication date: January 17, 2013
    Applicant: KONICA MINOLTA HOLDINGS, INC.
    Inventors: Akihiko Takeda, Hirokazu Koyama
  • Patent number: 8304984
    Abstract: Disclosed is an organic electroluminescent element in which light extraction efficiency is improved without lowering the electrical conductivity or the transporting or blocking performance for electrons or holes in a transparent electrode or an organic layer. The organic electroluminescent element of the invention is characterized in that it comprises a transparent substrate and provided thereon, at least a first electrode section with a light transmission property, an organic light emission layer section and a second electrode section in this order, the first electrode section containing at least metal nanowires, wherein an average refractive index of the first electrode section is lower than that of the organic light emission layer section.
    Type: Grant
    Filed: September 15, 2009
    Date of Patent: November 6, 2012
    Assignee: Konica Minolta Holdings, Inc.
    Inventors: Hirokazu Koyama, Yoshiyuki Suzuri
  • Publication number: 20120211739
    Abstract: The organic electronic device prevents short-circuiting between electrodes and improves lifetime without deteriorating transmittance, driving voltage stability and storage stability thereof. The organic electronic device has a substrate and provided thereon, a first electrode and a second electrode opposed to each other and at least one organic functional layer located between the first and second electrodes. At least one of the first and second electrodes has an electrically conductive polymer-containing layer containing a hydrophilic polymer binder and an electrically conductive polymer having a ? conjugated electrically conductive polymer component and a polyanion component. At least a part of the electrically conductive polymer-containing layer is subjected to crosslinking, and the electrically conductive polymer-containing layer has been subjected to wet washing treatment.
    Type: Application
    Filed: October 21, 2010
    Publication date: August 23, 2012
    Applicant: KONICA MINOLTA HOLDINGS, INC.
    Inventors: Hirokazu Koyama, Takatoshi Suematsu
  • Publication number: 20120205643
    Abstract: Provided is an organic electronic device exhibiting excellent conductivity and transparency of an electrode, and low driving voltage, together with en excellent storing property and excellent lifetime. Also disclosed is an organic electronic device possessing a transparent substrate and provided thereon, a first transparent electrode, a second electrode and an organic functional layer provided between the first transparent electrode and the second electrode, wherein the first transparent electrode and the second electrode are opposed to each other, and a transparent conductive layer containing a conductive polymer and an aqueous binder is provided between the first transparent electrode and the organic functional layer.
    Type: Application
    Filed: March 16, 2011
    Publication date: August 16, 2012
    Applicant: KONICA MINOLTA HOLDINGS, INC.
    Inventors: Takatoshi Suematsu, Hirokazu Koyama
  • Publication number: 20120027994
    Abstract: Provided is a low-cost transparent conductive film which has high optical transparency and excellent surface conductivity and surface smoothness. A method for manufacturing such transparent conductive film is also provided. The transparent conductive film has, on a transparent base material, a conductive fiber layer which includes at least a transparent resin and a conductive fiber. At least a part of the conductive fiber is exposed from the surface of the transparent conductive film, and the relationship between the surface roughness (Rz) of the transparent conductive film and the average diameter (D) of the conductive fiber satisfies the inequalities of 0<Rz<D.
    Type: Application
    Filed: March 1, 2010
    Publication date: February 2, 2012
    Applicant: KONICA MINOLTA HOLDINGS, INC.
    Inventors: Hiroshi Takada, Hirokazu Koyama
  • Publication number: 20110156577
    Abstract: An organic electroluminescent element wherein the light extraction efficiency is improved without lowering the electrical conductivity or the transporting or blocking performance for electrons or holes in a transparent electrode or an organic layer. The organic electroluminescent element comprises, on a transparent substrate, at least a light-transmitting first electrode part, an organic light-emitting layer part and a second electrode part, in this order from the substrate, and is characterized in that the first electrode part contains at least metal nanowires and that the average refractive index of the first electrode part is lower than the average refractive index of the organic light-emitting layer part.
    Type: Application
    Filed: September 15, 2009
    Publication date: June 30, 2011
    Applicant: KONICA MINOLTA HOLDINGS, INC.
    Inventors: Hirokazu Koyama, Yoshiyuki Suzuri
  • Patent number: 7854864
    Abstract: A manufacturing method of an optical film provided with a convexoconcave structure, comprises the steps of: coating a resin solution including a first resin solved by a solvent onto an endless or roll-like mold provided with a convexoconcave structure, and forming a resin solution layer on the mold; laminating a film substrate onto the resin solution layer to make a laminated film before the solvent in the resin solution layer is completely dried, the film substrate including a second resin, which is capable of absorbing the solvent or is soluble by the solvent; and peeling the laminated film from the mold before the solvent in the laminated film is completely dried.
    Type: Grant
    Filed: April 19, 2007
    Date of Patent: December 21, 2010
    Assignee: Konica Minolta Opto, Inc.
    Inventors: Akira Sato, Masaru Iwagaki, Hirokazu Sato, Shigeto Ohmori, Kazuhiro Miyazawa, Takashi Murakami, Hirokazu Koyama, Nobuo Kubo, Koji Tasaka, Shigeki Oka
  • Publication number: 20100300529
    Abstract: Disclosed is a dye-sensitized solar cell which can simultaneously realize an excellent photoelectric conversion efficiency and excellent durability. The dye-sensitized solar cell is also suitable when a resin film is used as a base material. The dye-sensitized solar cell comprises an electroconductive base material, and a metal oxide semiconductor layer formed of a semiconductor film with a dye adsorbed on the surface thereof, a charge transfer layer, and a counter electrode provided in that order on the electroconductive base material and is characterized in that a metal oxide intermediate layer formed of fine particles of a metal oxide is provided between the electroconductive base material and the metal oxide semiconductor layer and the electroconductive base material comprises a transparent base material, and a metallic current collecting layer formed of metallic fine wires and an electroconductive polymer-containing transparent electroconductive layer provided on the transparent base material.
    Type: Application
    Filed: December 10, 2008
    Publication date: December 2, 2010
    Applicant: KONICA MINOLTA HOLDINGS, INC.
    Inventors: Yusuke Kawahara, Hirokazu Koyama, Takahiro Nojima
  • Publication number: 20100288531
    Abstract: Provided is a transparent conductive film exhibiting high conductivity together with excellent transparency, and also exhibiting film strength tolerant to a washing treatment and a pattern forming treatment while maintaining conduction to an electronic device layer formed on an transparent conductive layer. Also disclosed is a method of manufacturing a transparent conductive film possessing a transparent substrate and provided thereon, a transparent conductive layer containing a metal nanowire, possessing the steps of forming a layer containing a crosslinking agent on the substrate, coating a coating solution containing a metal nanowire onto the layer containing the crosslinking agent, drying the coating solution, and conducting a treatment by which the crosslinking agent is reacted.
    Type: Application
    Filed: April 29, 2010
    Publication date: November 18, 2010
    Applicant: KONICA MINOLTA HOLDINGS, INC.
    Inventors: Hirokazu KOYAMA, Masaki GOTO
  • Publication number: 20070252293
    Abstract: A manufacturing method of an optical film provided with a convexoconcave structure, comprises the steps of: coating a resin solution including a first resin solved by a solvent onto an endless or roll-like mold provided with a convexoconcave structure, and forming a resin solution layer on the mold; laminating a film substrate onto the resin solution layer to make a laminated film before the solvent in the resin solution layer is completely dried, the film substrate including a second resin, which is capable of absorving the solution or is soluble by the solvent; and peeling the laminated film from the mold before the solvent in the laminated film is completely dried.
    Type: Application
    Filed: April 19, 2007
    Publication date: November 1, 2007
    Applicant: KONICA MINOLTA OPTO, INC.
    Inventors: Akira SATO, Masaru IWAGAKI, Hirokazu SATO, Shigeto OHMORI, Kazuhiro MIYAZAWA, Takashi MURAKAMI, Hirokazu KOYAMA, Nobuo KUBO, Koji TASAKA, Shigeki OKA
  • Patent number: 7226891
    Abstract: An image forming method containing the steps of (a) forming an image on a thermal transfer sheet of a thermal transfer recording material, and (b) transferring the image onto an image receiving sheet of the thermal transfer recording material, wherein the thermal transfer sheet including a substrate having thereon a yellow ink layer containing a thermally transferable yellow dye, a magenta ink layer containing a thermally transferable magenta dye, and a cyan ink layer containing a thermally transferable cyan dye, the image receiving sheet including a substrate having thereon a thermally transferable dye receiving layer; at least one of the thermally transferable dyes is reactive with a dye fixing agent, and satisfies Formula of (Aa/Am)×100?75; and a printing rate of each of the yellow ink layer, the magenta ink layer and the cyan ink layer is not more than 2.5 msec./line.
    Type: Grant
    Filed: September 21, 2004
    Date of Patent: June 5, 2007
    Assignee: Konica Minolta Photo Imaging, Inc
    Inventors: Yoriko Nakayama, Hiroshi Watanabe, Hiroaki Yamagishi, Hirokazu Koyama, Kaori Fukumuro, Hiroki Nakane
  • Patent number: 7122504
    Abstract: Disclosed is a protective layer transfer sheet for forming an image by the method which comprising the steps of overlaying a thermal transfer image receiving sheet and a thermal transfer recording ink sheet, forming an image on the thermal diffusible dye receiving layer by heating, and forming a protective layer on the image by transferring the thermal transferable protective layer unit by heating, in which the thermal transferable protective layer unit is constituted by plural transferable resin layers and at least one of the resin layers contains a metal ion-containing compound and a layer other than the resin layer containing the metal ion-containing compound contains a UV absorbent, and a barrier layer is arranged between the metal ion-containing layer and the UV absorbent containing layer.
    Type: Grant
    Filed: September 20, 2004
    Date of Patent: October 17, 2006
    Assignee: Konica Minolta Photo Imaging, Inc.
    Inventors: Hiroshi Watanabe, Hiroaki Yamagishi, Hirokazu Koyama, Hiroki Nakane