Patents by Inventor Takuya FUJIMATSU

Takuya FUJIMATSU 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).

  • Projection lens barrel and projection display device
    Patent number: 10754120
    Abstract: In order to provide a projection lens barrel and a projection display device that are capable of correcting the optical characteristics of a plurality of lens groups, a projection lens barrel, comprising a lens optical system causing light from an image display element to be formed as a projected image on a screen, also comprises correction mechanisms that move each of at least two lens groups along an optical axis and correct the optical characteristics to be corrected, said lens groups each having different optical characteristics for correction in order to suppress reduction in image quality of a projected image caused by changes in optical characteristics caused by temperature changes in the projection lens barrel.
    Type: Grant
    Filed: January 21, 2019
    Date of Patent: August 25, 2020
    Assignee: Nittoh Inc.
    Inventors: Takafumi Hanaoka, Takahiko Matsuo, Takuya Fujimatsu
  • PROJECTION LENS BARREL AND PROJECTION DISPLAY DEVICE
    Publication number: 20190154950
    Abstract: In order to provide a projection lens barrel and a projection display device that are capable of correcting the optical characteristics of a plurality of lens groups, a projection lens barrel, comprising a lens optical system causing light from an image display element to be formed as a projected image on a screen, also comprises correction mechanisms that move each of at least two lens groups along an optical axis and correct the optical characteristics to be corrected, said lens groups each having different optical characteristics for correction in order to suppress reduction in image quality of a projected image caused by changes in optical characteristics caused by temperature changes in the projection lens barrel.
    Type: Application
    Filed: January 21, 2019
    Publication date: May 23, 2019
    Inventors: Takafumi HANAOKA, Takahiko MATSUO, Takuya FUJIMATSU
  • Projection lens barrel and projection display device
    Patent number: 10222576
    Abstract: In order to provide a projection lens barrel and a projection display device that are capable of correcting the optical characteristics of a plurality of lens groups, a projection lens barrel, comprising a lens optical system causing light from an image display element to be formed as a projected image on a screen, also comprises correction mechanisms that move each of at least two lens groups along an optical axis and correct the optical characteristics to be corrected, said lens groups each having different optical characteristics for correction in order to suppress reduction in image quality of a projected image caused by changes in optical characteristics caused by temperature changes in the projection lens barrel.
    Type: Grant
    Filed: August 27, 2015
    Date of Patent: March 5, 2019
    Assignee: Nittoh Inc.
    Inventors: Takafumi Hanaoka, Takahiko Matsuo, Takuya Fujimatsu
  • PROJECTION LENS BARREL AND PROJECTION DISPLAY DEVICE
    Publication number: 20170235089
    Abstract: In order to provide a projection lens barrel and a projection display device that are capable of correcting the optical characteristics of a plurality of lens groups, a projection lens barrel, comprising a lens optical system causing light from an image display element to be formed as a projected image on a screen, also comprises correction mechanisms that move each of at least two lens groups along an optical axis and correct the optical characteristics to be corrected, said lens groups each having different optical characteristics for correction in order to suppress reduction in image quality of a projected image caused by changes in optical characteristics caused by temperature changes in the projection lens barrel.
    Type: Application
    Filed: August 27, 2015
    Publication date: August 17, 2017
    Inventors: Takafumi HANAOKA, Takahiko MATSUO, Takuya FUJIMATSU