Patents by Inventor Hiroyuyki Hamano

Hiroyuyki Hamano 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).

  • Zoom lens system and camera incorporating the same
    Patent number: 7365913
    Abstract: A zoom lens system comprises a 1st lens unit with positive optical power consisting of one lens element, a 2nd lens unit with negative optical power, a 3rd lens unit with positive optical power and a 4th lens unit with positive optical power, in order from the object side to the image side is disclosed. During zooming, the 1st lens unit and 3rd lens unit move so as to be located closer to the object side at the telephoto end than at the wide-angle end. Then, by appropriately setting the amount of movements of the 1st lens unit, 2nd lens unit and 3rd lens unit during zooming, the overall length of the zoom lens system is reduced and excellent optical performance is realized.
    Type: Grant
    Filed: September 16, 2003
    Date of Patent: April 29, 2008
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiroyuyki Hamano, Hiroshi Saruwatari