Patents by Inventor Tadayuki Kameyama

Tadayuki Kameyama 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: 20200198302
    Abstract: Provided is a transparent sheet that is prevented from curling, is excellent in external appearance, prevents the progress of a crack, and the rupture, of its glass, and is excellent in flexibility. A transparent sheet of the present invention includes: an inorganic glass; and a resin film bonded onto one side, or each of both sides, of the inorganic glass through an adhesion layer, in which: the inorganic glass has a thickness of from 35 ?m to 100 ?m; the adhesion layer has a single-layer thickness of more than 10 ?m and (the thickness of the inorganic glass×0.3) ?m or less; the adhesion layer has a modulus of elasticity at 25° C. of from 1.2 GPa to 10 GPa; and a ratio of a total thickness of the resin film to the thickness of the inorganic glass is from 0.9 to 4.
    Type: Application
    Filed: March 2, 2020
    Publication date: June 25, 2020
    Applicant: NITTO DENKO CORPORATION
    Inventors: Takeshi Murashige, Daisuke Hattori, Tadayuki Kameyama
  • Patent number: 10598829
    Abstract: The present invention relates to a water-resistant organic thin film obtained by crosslinking, with organic nitrogen compounds, an organic thin film comprising an organic dye having an anionic group, wherein the organic nitrogen compounds are first, second, and third acyclic organic nitrogen compounds each having two or more nitrogen atoms per molecule, wherein the nitrogen atoms of each of the first, second, and third organic nitrogen compounds are each in a cationic group, and the relation A?0.4 nm<B<C is satisfied, wherein A represents a distance (nm) between adjacent nitrogen atoms in the first organic nitrogen compound, B represents a distance (nm) between adjacent nitrogen atoms in the second organic nitrogen compound, and C represents a distance (nm) between adjacent nitrogen atoms in the third organic nitrogen compound.
    Type: Grant
    Filed: June 10, 2013
    Date of Patent: March 24, 2020
    Assignee: NITTO DENKO CORPORATION
    Inventors: Hiroshi Tomohisa, Toru Umemoto, Shoichi Matsuda, Tadayuki Kameyama
  • Patent number: 10377312
    Abstract: Provided is an image display mirror that includes a half mirror and an image display apparatus, reduces an influence of a reflected image provided by the half mirror, and is excellent in visibility of an image displayed on the image display apparatus. The image display mirror for a vehicle includes a first polarizing plate, a half mirror, and an image display apparatus in the stated order from a viewer side. In one embodiment, the first polarizing plate includes a polarizer, and the direction of the polarizer of the first polarizing plate is set so that the transmittance of light output from the image display apparatus that is transmitted through the first polarizing plate becomes maximum.
    Type: Grant
    Filed: January 13, 2016
    Date of Patent: August 13, 2019
    Assignee: NITTO DENKO CORPORATION
    Inventors: Katsunori Takada, Tadayuki Kameyama, Yoshitsugu Kitamura, Keisuke Kimura, Hiroki Kuramoto
  • Patent number: 10228572
    Abstract: A light control device of the present invention includes a first patterning polarizing plate 21 containing a plurality of polarization regions having different absorption axis directions, a second patterning polarizing plate 22 containing the same polarization regions as those of the first patterning polarizing plate 21, and a retardation plate 3, wherein at least any one of the first and the second patterning polarizing plates 21, 22 is disposed slidably in a plane direction. Such a light control device hardly causes color irregularities and hardly causes a pattern.
    Type: Grant
    Filed: January 7, 2015
    Date of Patent: March 12, 2019
    Assignee: NITTO DENKO CORPORATION
    Inventors: Yoshiaki Asanoi, Shoichi Matsuda, Hiroyuki Takemoto, Tadayuki Kameyama
  • Patent number: 10207645
    Abstract: A vehicle includes: an image display mirror including a first polarizing plate, a half mirror, and an image display apparatus in the stated order from a viewer side; and a second polarizing plate, in which: the image display mirror is arranged so as to b viewable by a driver of the vehicle; the half mirror is configured to be oriented in different directions between when an image is displayed on the image display apparatus and when the image is not displayed thereon; the second polarizing plate is arranged so that light transmitted through the second polarizing plate reaches a first polarizing plate side of the image display mirror when the image is displayed on the image display apparatus; and the vehicle is configured so that the transmitted light of the second polarizing plate reaching the image display mirror is prevented from being transmitted through the first polarizing plate.
    Type: Grant
    Filed: February 1, 2016
    Date of Patent: February 19, 2019
    Assignee: NITTO DENKO CORPORATION
    Inventors: Katsunori Takada, Tadayuki Kameyama, Yoshitsugu Kitamura, Keisuke Kimura, Hiroki Kuramoto
  • Patent number: 10023123
    Abstract: Provided is an image display mirror that includes a half mirror and an image display apparatus, reduces an influence of a reflected image provided by the half mirror, and is excellent in visibility of an image displayed on the image display apparatus. The image display mirror for a vehicle includes: a circularly polarizing plate arranged attachably and removably; a half mirror; and an image display apparatus in the stated order from a viewer side. In one embodiment, attached and removed states of the circularly polarizing plate are switched when an image is displayed on the image display apparatus and when the image is not displayed thereon, and when the image is displayed, the circularly polarizing plate is arranged between the half mirror and a viewer.
    Type: Grant
    Filed: January 13, 2016
    Date of Patent: July 17, 2018
    Assignee: NITTO DENKO CORPORATION
    Inventors: Katsunori Takada, Tadayuki Kameyama, Yoshitsugu Kitamura, Keisuke Kimura, Hiroki Kuramoto
  • Patent number: 9868400
    Abstract: Provided is an image display mirror that includes a half mirror and an image display apparatus, reduces an influence of a reflected image provided by the half mirror, and is excellent in visibility of an image displayed on the image display apparatus. The image display mirror for a vehicle includes: a first polarizing plate; a first liquid crystal cell; a half mirror; and an image display apparatus in the stated order from a viewer side, in which in the first liquid crystal cell, a state in which a polarization direction of incident linearly polarized light is maintained and a state in which the incident linearly polarized light is transformed into circularly polarized light are switched in accordance with a voltage to be supplied.
    Type: Grant
    Filed: February 1, 2016
    Date of Patent: January 16, 2018
    Assignee: NITTO DENKO CORPORATION
    Inventors: Katsunori Takada, Kentarou Takeda, Tadatoshi Nakanishi, Tadayuki Kameyama, Hiroki Kuramoto
  • Patent number: 9707897
    Abstract: An image display mirror for a vehicle includes a first polarizing plate arranged so as to be rotatable in a plane, a half mirror having a reflection axis and configured to reflect polarized light, and an image display apparatus in the stated order from a viewer side, in which: the first polarizing plate has a polarizer; a rotation of the first polarizing plate changes an angle of an absorption axis of the polarizer relative to a reflection axis of the half mirror when an image is not displayed on the image display apparatus and when the image is displayed thereon; when the image is not displayed, the absorption axis of the polarizer and the reflection axis of the half mirror are perpendicular to each other; and when the image is displayed, the absorption axis of the polarizer and the reflection axis of the half mirror are parallel to each other.
    Type: Grant
    Filed: February 1, 2016
    Date of Patent: July 18, 2017
    Assignee: NITTO DENKO CORPORATION
    Inventors: Katsunori Takada, Tadayuki Kameyama, Yoshitsugu Kitamura, Keisuke Kimura, Hiroki Kuramoto
  • Publication number: 20170146713
    Abstract: It is an object of the invention to provide a method for manufacturing a long laminated polarizing plate having a long polarizing coating formed by coating directly on a long retardation film and to provide such a long laminated polarizing plate. The present invention relates to a method for manufacturing a long laminated polarizing plate comprising a long retardation film having a slow axis in its longitudinal direction and a long polarizing coating placed on the retardation film and having an absorption axis or a transmission axis in an in-plane direction at an angle of 25 to 65° to the slow axis direction of the long retardation film, the method comprising the steps: (A) preparing a long retardation film having a slow axis in its longitudinal direction and having an Nz coefficient of 1.
    Type: Application
    Filed: December 1, 2016
    Publication date: May 25, 2017
    Applicant: NITTO DENKO CORPORATION
    Inventors: Shoichi Matsuda, Yoshiaki Asanoi, Tadayuki Kameyama
  • Patent number: 9623441
    Abstract: It is an object of the invention to provide a method for manufacturing a long laminated polarizing plate having a long polarizing coating formed by coating directly on a long retardation film and to provide such a long laminated polarizing plate. The present invention relates to a method for manufacturing a long laminated polarizing plate comprising a long retardation film having a slow axis in its longitudinal direction and a long polarizing coating placed on the retardation film and having an absorption axis or a transmission axis in an in-plane direction at an angle of 25 to 65° to the slow axis direction of the long retardation film.
    Type: Grant
    Filed: August 17, 2012
    Date of Patent: April 18, 2017
    Assignee: NITTO DENKO CORPORATION
    Inventors: Shoichi Matsuda, Yoshiaki Asanoi, Tadayuki Kameyama
  • Patent number: 9616816
    Abstract: Provided is an image display mirror that includes a half mirror and an image display apparatus, reduces an influence of a reflected image provided by the half mirror, and is excellent in visibility of an image displayed on the image display apparatus. The image display mirror for a vehicle includes a first polarizing plate that is arranged removably and attachably, a half mirror that has a reflection axis and is configured to reflect polarized light, and an image display apparatus in the stated order from a viewer side, in which: the first polarizing plate has a polarizer; and when the first polarizing plate is in an attached state, an absorption axis of the polarizer and the reflection axis of the half mirror are parallel to each other.
    Type: Grant
    Filed: February 1, 2016
    Date of Patent: April 11, 2017
    Assignee: NITTO DENKO CORPORATION
    Inventors: Katsunori Takada, Tadayuki Kameyama, Yoshitsugu Kitamura, Keisuke Kimura, Hiroki Kuramoto
  • Publication number: 20160334633
    Abstract: A light control device of the present invention includes a first patterning polarizing plate 21 containing a plurality of polarization regions having different absorption axis directions, a second patterning polarizing plate 22 containing the same polarization regions as those of the first patterning polarizing plate 21, and a retardation plate 3, wherein at least any one of the first and the second patterning polarizing plates 21, 22 is disposed slidably in a plane direction. Such a light control device hardly causes color irregularities and hardly causes a pattern.
    Type: Application
    Filed: January 7, 2015
    Publication date: November 17, 2016
    Applicant: NITTO DENKO CORPORATION
    Inventors: Yoshiaki Asanoi, Shoichi Matsuda, Hiroyuki Takemoto, Tadayuki Kameyama
  • Publication number: 20160273267
    Abstract: Provided is an optical laminated body including a patterning polarizing layer, in which the absorption axis of a polarizing region is less likely to deviate and which is suitable for light control applications. In the optical laminated body 1 including a substrate 2 and a patterning polarizing layer 5 that is provided on the substrate 2 and includes a plurality of polarizing regions 51 and 52 having different absorption axis directions, a substrate having the absolute value of the dimensional change rate after heating to 80° C. for 24 hours being less than 1% is used as the substrate 2.
    Type: Application
    Filed: October 14, 2014
    Publication date: September 22, 2016
    Applicant: NITTO DENKO CORPORATION
    Inventors: Yoshiaki Asanoi, Shoichi Matsuda, Hiroyuki Takemoto, Tadayuki Kameyama
  • Publication number: 20160221508
    Abstract: Provided is an image display mirror that includes a half mirror and an image display apparatus, reduces an influence of a reflected image provided by the half mirror, and is excellent in visibility of an image displayed on the image display apparatus. The image display mirror for a vehicle includes a first polarizing plate that is arranged removably and attachably, a half mirror that has a reflection axis and is configured to reflect polarized light, and an image display apparatus in the stated order from a viewer side, in which: the first polarizing plate has a polarizer; and when the first polarizing plate is in an attached state, an absorption axis of the polarizer and the reflection axis of the half mirror are parallel to each other.
    Type: Application
    Filed: February 1, 2016
    Publication date: August 4, 2016
    Applicant: NITTO DENKO CORPORATION
    Inventors: Katsunori Takada, Tadayuki Kameyama, Yoshitsugu Kitamura, Keisuke Kimura, Hiroki Kuramoto
  • Publication number: 20160221506
    Abstract: A vehicle includes: an image display mirror including a first polarizing plate, a half mirror, and an image display apparatus in the stated order from a viewer side; and a second polarizing plate, in which: the image display mirror is arranged so as to b viewable by a driver of the vehicle; the half mirror is configured to be oriented in different directions between when an image is displayed on the image display apparatus and when the image is not displayed thereon; the second polarizing plate is arranged so that light transmitted through the second polarizing plate reaches a first polarizing plate side of the image display mirror when the image is displayed on the image display apparatus; and the vehicle is configured so that the transmitted light of the second polarizing plate reaching the image display mirror is prevented from being transmitted through the first polarizing plate.
    Type: Application
    Filed: February 1, 2016
    Publication date: August 4, 2016
    Applicant: NITTO DENKO CORPORATION
    Inventors: Katsunori Takada, Tadayuki Kameyama, Yoshitsugu Kitamura, Keisuke Kimura, Hiroki Kuramoto
  • Publication number: 20160221509
    Abstract: An image display mirror for a vehicle includes a first polarizing plate arranged so as to be rotatable in a plane, a half mirror having a reflection axis and configured to reflect polarized light, and an image display apparatus in the stated order from a viewer side, in which: the first polarizing plate has a polarizer; a rotation of the first polarizing plate changes an angle of an absorption axis of the polarizer relative to a reflection axis of the half mirror when an image is not displayed on the image display apparatus and when the image is displayed thereon; when the image is not displayed, the absorption axis of the polarizer and the reflection axis of the half mirror are perpendicular to each other; and when the image is displayed, the absorption axis of the polarizer and the reflection axis of the half mirror are parallel to each other.
    Type: Application
    Filed: February 1, 2016
    Publication date: August 4, 2016
    Applicant: NITTO DENKO CORPORATION
    Inventors: Katsunori Takada, Tadayuki Kameyama, Yoshitsugu Kitamura, Keisuke Kimura, Hiroki Kuramoto
  • Publication number: 20160221507
    Abstract: Provided is an image display mirror that includes a half mirror and an image display apparatus, reduces an influence of a reflected image provided by the half mirror, and is excellent in visibility of an image displayed on the image display apparatus. The image display mirror for a vehicle includes: a first polarizing plate; a first liquid crystal cell; a half mirror; and an image display apparatus in the stated order from a viewer side, in which in the first liquid crystal cell, a state in which a polarization direction of incident linearly polarized light is maintained and a state in which the incident linearly polarized light is transformed into circularly polarized light are switched in accordance with a voltage to be supplied.
    Type: Application
    Filed: February 1, 2016
    Publication date: August 4, 2016
    Applicant: NITTO DENKO CORPORATION
    Inventors: Katsunori Takada, Kentarou Takeda, Tadatoshi Nakanishi, Tadayuki Kameyama, Hiroki Kuramoto
  • Publication number: 20160200255
    Abstract: Provided is an image display mirror that includes a half mirror and an image display apparatus, reduces an influence of a reflected image provided by the half mirror, and is excellent in visibility of an image displayed on the image display apparatus. The image display mirror for a vehicle includes: a circularly polarizing plate arranged attachably and removably; a half mirror; and an image display apparatus in the stated order from a viewer side. In one embodiment, attached and removed states of the circularly polarizing plate are switched when an image is displayed on the image display apparatus and when the image is not displayed thereon, and when the image is displayed, the circularly polarizing plate is arranged between the half mirror and a viewer.
    Type: Application
    Filed: January 13, 2016
    Publication date: July 14, 2016
    Applicant: NITTO DENKO CORPORATION
    Inventors: Katsunori Takada, Tadayuki Kameyama, Yoshitsugu Kitamura, Keisuke Kimura, Hiroki Kuramoto
  • Publication number: 20160200256
    Abstract: Provided is an image display mirror that includes a half mirror and an image display apparatus, reduces an influence of a reflected image provided by the half mirror, and is excellent in visibility of an image displayed on the image display apparatus. The image display mirror for a vehicle includes a first polarizing plate, a half mirror, and an image display apparatus in the stated order from a viewer side. In one embodiment, the first polarizing plate includes a polarizer, and the direction of the polarizer of the first polarizing plate is set so that the transmittance of light output from the image display apparatus that is transmitted through the first polarizing plate becomes maximum.
    Type: Application
    Filed: January 13, 2016
    Publication date: July 14, 2016
    Applicant: NITTO DENKO CORPORATION
    Inventors: Katsunori Takada, Tadayuki Kameyama, Yoshitsugu Kitamura, Keisuke Kimura, Hiroki Kuramoto
  • Patent number: 9387507
    Abstract: A method for manufacturing a water resistant optically anisotropic film capable of suppressing the generation of a defect such as a crack or separation is provided. The method for manufacturing the water resistant optically anisotropic of the present invention includes a water resistant treatment step of bringing an optically anisotropic film containing an organic dye having an anionic group into contact with a water resistant treatment liquid containing a multivalent cationic compound and a monovalent cationic compound, and the mass ratio of the multivalent cationic compound and the monovalent cationic compound contained in the water resistant treatment liquid, monovalent cationic compound/multivalent cationic compound, is 0.01 to 2.
    Type: Grant
    Filed: December 6, 2012
    Date of Patent: July 12, 2016
    Assignee: NITTO DENKO CORPORATION
    Inventors: Toru Umemoto, Satoshi Hirata, Sadahiro Nakanishi, Shoichi Matsuda, Tadayuki Kameyama