Patents by Inventor Takayuki Numaguchi

Takayuki Numaguchi 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).

  • Lens unit
    Patent number: 6556359
    Abstract: A lens unit has an opening to incorporate first and second movable lens frames at a side other than an image side and an object side. The first movable lens frame has a first through hole to slide oil a first guide shaft and a second through hole to slide on a second guide shaft. The second movable lens frame has a first through hole and a second through hole one of which slides on a third guide shaft. The length of the first through hole of the first movable lens frame is longer than that of the second through of the first movable lens frame and the length of the first through hole of the second movable lens frame is longer than that of the second through hole portion of the second movable lens frame.
    Type: Grant
    Filed: February 23, 2001
    Date of Patent: April 29, 2003
    Assignee: Konica Corporation
    Inventors: Tetsuji Emura, Takayuki Numaguchi
  • Lens unit
    Publication number: 20010043411
    Abstract: A lens unit has an opening to incorporate first and second movable lens frames at a side other than an image side and an object side. The first movable lens frame has a first through hole to slide on a first guide shaft and a second through hole to slide on a second guide shaft. The second movable lens frame has a first through hole and a second through hole one of which slides on a third guide shaft. The length of the first through hole of the first movable lens frame is longer than that of the second through of the first movable lens frame and the length of the first through hole of the second movable lens frame is longer than that of the second through hole portion of the second movable lens frame.
    Type: Application
    Filed: February 23, 2001
    Publication date: November 22, 2001
    Applicant: KONICA CORPORATION
    Inventors: Tetsuji Emura, Takayuki Numaguchi