Patents by Inventor Kaizo Tsukamoto

Kaizo Tsukamoto 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).

  • Image pickup apparatus
    Patent number: 7161749
    Abstract: An image pickup apparatus is provided. The image pickup apparatus permitting a conversion lens to be mounted and dismounted, wherein a lens hood is composed of a base portion on the mounting side and a tubular portion on the front side, the base portion and the tubular portion are detachably coupled to each other, and another lens is contained in the inside of the lens hood when the another lens is mounted on the front side of an optical system, whereby even when the conversion lens is being used, the lens hood can be used as it is, and the incident light contracting function of the lens hood can be maintained.
    Type: Grant
    Filed: October 14, 2004
    Date of Patent: January 9, 2007
    Assignee: Sony Corporation
    Inventors: Nobumasa Sakurai, Yukio Yamada, Kaizo Tsukamoto
  • Imaging device
    Publication number: 20060007551
    Abstract: An image pickup apparatus is provided. The image pickup apparatus permitting a conversion lens to be mounted and dismounted, wherein a lens hood is composed of a base portion on the mounting side and a tubular portion on the front side, the base portion and the tubular portion are detachably coupled to each other, and another lens is contained in the inside of the lens hood when the another lens is mounted on the front side of an optical system, whereby even when the conversion lens is being used, the lens hood can be used as it is, and the incident light contracting function of the lens hood can be maintained.
    Type: Application
    Filed: October 14, 2004
    Publication date: January 12, 2006
    Inventors: Nobumasa Sakurai, Yukio Yamada, Kaizo Tsukamoto