Patents by Inventor Yasuo Horiguchi

Yasuo Horiguchi 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: 6134342
    Abstract: In a contact lens visual inspection method and apparatus, a contact lens insertion portion of a container is first imaged by an image pickup device and then an area which locates on the container and is unnecessary for the visual inspection of a contact lens is extracted from the image of the contact lens insertion portion to form a mask image. Thereafter, a system containing the contact lens insertion portion of the container, the preservation liquid filled in the contact lens insertion portion and the contact lens placed in the contact lens insertion portion is imaged as an inspection object by the imaging device to obtain an inspection object image, the inspection object image is overlapped with the mask image, and the mask image is subtracted from the inspection object image to set as a visual inspection area the area corresponding to a subtracting image obtained by said subtracting step. The defects of the contact lens such as soil, foreign matter, scratch, breakage, peripheral damage, etc.
    Type: Grant
    Filed: November 28, 1997
    Date of Patent: October 17, 2000
    Assignees: Menicon Co., Ltd., Toshiba Engineering Corporation
    Inventors: Atsuhiro Doke, Minoru Aoki, Katsumi Maenosono, Minoru Fujita, Norihiro Tanaka, Yasuo Horiguchi