Patents by Inventor Katsushi KAMIJYO

Katsushi KAMIJYO 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: 9753196
    Abstract: The present invention relates to an optical filter, a solid-state imaging element and an imaging device lens which contain a near infrared ray absorbing layer having a specific near infrared ray absorbing dye dispersed in a transparent resin having a refractive index of 1.54 or more, and also relates to an imaging device containing the solid-state imaging element or the imaging device lens. The near infrared ray absorbing layer has a transmittance of visible light of from 450 to 600 nm of 70% or more, a transmittance of light in a wavelength region of from 695 to 720 nm of not more than 10%, and an amount of change of transmittance of not more than ?0.8.
    Type: Grant
    Filed: January 11, 2016
    Date of Patent: September 5, 2017
    Assignee: ASAHI GLASS COMPANY, LIMITED
    Inventors: Makoto Hasegawa, Satoshi Kashiwabara, Hiroshi Shimoda, Kenta Sekikawa, Takashi Shibuya, Mitsuo Osawa, Katsushi Kamijyo, Hiroyuki Arishima, Hiroshi Kumai
  • Publication number: 20160231482
    Abstract: The present invention relates to an optical filter, a solid-state imaging element and an imaging device lens which contain a near infrared ray absorbing layer having a specific near infrared ray absorbing dye dispersed in a transparent resin having a refractive index of 1.54 or more, and also relates to an imaging device containing the solid-state imaging element or the imaging device lens. The near infrared ray absorbing layer has a transmittance of visible light of from 450 to 600 nm of 70% or more, a transmittance of light in a wavelength region of from 695 to 720 nm of not more than 10%, and an amount of change of transmittance of not more than ?0.8.
    Type: Application
    Filed: January 11, 2016
    Publication date: August 11, 2016
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Makoto HASEGAWA, Satoshi KASHIWABARA, Hiroshi SHIMODA, Kenta SEKIKAWA, Takashi SHIBUYA, Mitsuo OSAWA, Katsushi KAMIJYO, Hiroyuki ARISHIMA, Hiroshi KUMAI
  • Patent number: 9322965
    Abstract: An optical member has: a transparent substrate; and a dielectric multilayer on the transparent substrate formed by stacking a plurality of unit refractive index layers each formed of a high-refractive index layer having a refractive index of 2 or more and a low-refractive index layer having a refractive index of 1.6 or less. In the optical member, a total number of the unit refractive index layers is 15 or more, and a number of the unit refractive index layers satisfying a condition of nHdH/nLdL?3 is 10 or more, nHdH represents an optical thickness of the high-refractive index layer, and nLdL represents an optical thickness of the low-refractive index layer.
    Type: Grant
    Filed: January 28, 2014
    Date of Patent: April 26, 2016
    Assignee: ASAHI GLASS COMPANY, LIMITED
    Inventors: Mitsuo Osawa, Masahiro Mori, Katsushi Miyake, Katsushi Kamijyo, Mitsuyuki Tatemura
  • Patent number: 9268072
    Abstract: The present invention relates to an optical filter, a solid-state imaging element and an imaging device lens which contain a near infrared ray absorbing layer having a specific near infrared ray absorbing dye dispersed in a transparent resin having a refractive index of 1.54 or more, and also relates to an imaging device containing the solid-state imaging element or the imaging device lens. The near infrared ray absorbing layer has a transmittance of visible light of from 450 to 600 nm of 70% or more, a transmittance of light in a wavelength region of from 695 to 720 nm of not more than 10%, and an amount of change of transmittance of not more than ?0.8.
    Type: Grant
    Filed: December 6, 2013
    Date of Patent: February 23, 2016
    Assignee: ASAHI GLASS COMPANY, LIMITED
    Inventors: Makoto Hasegawa, Satoshi Kashiwabara, Hiroshi Shimoda, Kenta Sekikawa, Takashi Shibuya, Mitsuo Osawa, Katsushi Kamijyo, Hiroyuki Arishima, Hiroshi Kumai
  • Publication number: 20140247480
    Abstract: To provide a glass member with an optical multilayer from which film separation of the optical multilayer is suppressed, and a near infrared cut filter glass. A glass member with an optical multilayer, comprising a fluorophosphate glass substrate and an optical multilayer formed on the substrate, wherein an adhesion-strengthening layer consisting of one or more layers, which improves the adhesion of the optical multilayer to the fluorophosphate glass substrate, is formed between the fluorophosphate glass substrate and the optical multilayer; and the optical multilayer is formed by a sputtering method or an ion-beam assisted deposition method, and the adhesion-strengthening layer is formed by a deposition method without using ion-beam assist.
    Type: Application
    Filed: March 27, 2014
    Publication date: September 4, 2014
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Mitsuyuki Tatemura, Kazuhiro Tamai, Takashi Nagata, Katsushi Kamijyo
  • Publication number: 20140139912
    Abstract: An optical member has: a transparent substrate; and a dielectric multilayer on the transparent substrate formed by stacking a plurality of unit refractive index layers each formed of a high-refractive index layer having a refractive index of 2 or more and a low-refractive index layer having a refractive index of 1.6 or less. In the optical member, a total number of the unit refractive index layers is 15 or more, and a number of the unit refractive index layers satisfying a condition of nHdH/nLdL?3 is 10 or more, nHdH represents an optical thickness of the high-refractive index layer, and nLdL represents an optical thickness of the low-refractive index layer.
    Type: Application
    Filed: January 28, 2014
    Publication date: May 22, 2014
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Mitsuo OSAWA, Masahiro MORI, Katsushi MIYAKE, Katsushi KAMIJYO, Mitsuyuki TATEMURA
  • Publication number: 20140091419
    Abstract: The present invention relates to an optical filter, a solid-state imaging element and an imaging device lens which contain a near infrared ray absorbing layer having a specific near infrared ray absorbing dye dispersed in a transparent resin having a refractive index of 1.54 or more, and also relates to an imaging device containing the solid-state imaging element or the imaging device lens. The near infrared ray absorbing layer has a transmittance of visible light of from 450 to 600 nm of 70% or more, a transmittance of light in a wavelength region of from 695 to 720 nm of not more than 10%, and an amount of change of transmittance of not more than ?0.
    Type: Application
    Filed: December 6, 2013
    Publication date: April 3, 2014
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Makoto Hasegawa, Satoshi Kashiwabara, Hiroshi Shimoda, Kenta Sekikawa, Takashi Shibuya, Mitsuo Osawa, Katsushi Kamijyo, Hiroyuki Arishima, Hiroshi Kumai
  • Publication number: 20120199929
    Abstract: To provide a near infrared cutoff filter at low costs, which is useful as cover glass for a solid state imaging sensor package, by providing a thin film attenuation layer for effectively shielding ? rays emitted from substrate glass in a form not to influence the optical characteristics. A near infrared cutoff filter comprising substrate glass made of fluorophosphate glass containing CuO or phosphate glass containing CuO, and a thin film attenuation layer formed on at least one light-permeable surface of the substrate glass to attenuate ? rays emitted from the substrate glass.
    Type: Application
    Filed: April 19, 2012
    Publication date: August 9, 2012
    Applicant: Asahi Glass Company, Limited
    Inventors: Katsushi KAMIJYO, Hajime Hoshino