Patents by Inventor Tsuneto Iwasaki

Tsuneto Iwasaki 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).

  • Amplitude of accommodation measuring apparatus
    Patent number: 8123356
    Abstract: Shift lenses 20L, 20R are provided on optical axes that pass through LCDs 40L, 40R for displaying an image for focusing. The shift lenses 20L, 20R are moved along the optical axes by pressing a focus button provided on a case 10 in accordance with an instruction displayed on the LCDs 40L, 40R. An amplitude of accommodation is calculated on the basis of a position where the image starts blurring upon moving the shift lenses 20L, 20R from a far point side focus position, and a position where the image starts blurring upon moving the shift lenses 20L, 20R from a near point side focus position.
    Type: Grant
    Filed: April 9, 2008
    Date of Patent: February 28, 2012
    Assignees: University of Occupational and Environmental Health, Japan, Nikon Vision Co., Ltd.
    Inventors: Tsuneto Iwasaki, Akihiko Tawara
  • AMPLITUDE OF ACCOMMODATION MEASURING APPARATUS
    Publication number: 20100118272
    Abstract: Shift lenses 20L, 20R are provided on optical axes that pass through LCDs 40L, 40R for displaying an image for focusing. The shift lenses 20L, 20R are moved along the optical axes by pressing a focus button provided on a case 10 in accordance with an instruction displayed on the LCDs 40L, 40R. An amplitude of accommodation is calculated on the basis of a position where the image starts blurring upon moving the shift lenses 20L, 20R from a far point side focus position, and a position where the image starts blurring upon moving the shift lenses 20L, 20R from a near point side focus position.
    Type: Application
    Filed: April 9, 2008
    Publication date: May 13, 2010
    Inventors: Tsuneto Iwasaki, Akihiko Tawara
  • Visual training method and visual training device
    Patent number: 7306335
    Abstract: In a visual training device and a visual training method, different targets are displayed for right and left eyes, respectively, and refractivities of the right and left eyes are measured. Based on the measured refractivities of the eyes, positions of the targets displayed for the right and left eyes are moved in the directions of the respective optical axes. At the same time, the targets are moved so that the visual axes of the right and left eyes incline outward toward the end. The directions of the visual axes of the right and left eyes incline outward toward the end, so that it is possible to relax the strain of musculus ciliaris and relieve visual fatigue through short, effective training.
    Type: Grant
    Filed: March 26, 2004
    Date of Patent: December 11, 2007
    Assignee: Nikon Corporation
    Inventors: Nobuyuki Miyake, Masaki Ootsuki, Tsuneto Iwasaki
  • Visual training method and visual training device
    Publication number: 20040257528
    Abstract: In a visual training device and a visual training method, different targets are displayed for right and left eyes, respectively, and refractivities of the right and left eyes are measured. Based on the measured refractivities of the eyes, positions of the targets displayed for the right and left eyes are moved in the directions of the respective optical axes. At the same time, the targets are moved so that the visual axes of the right and left eyes incline outward toward the end. The directions of the visual axes of the right and left eyes incline outward toward the end, so that it is possible to relax the strain of musculus ciliaris and relieve visual fatigue through short, effective training.
    Type: Application
    Filed: March 26, 2004
    Publication date: December 23, 2004
    Applicant: NIKON CORPORATION
    Inventors: Nobuyuki Miyake, Masaki Ootsuki, Tsuneto Iwasaki