Patents by Inventor Atushi Maruyama

Atushi Maruyama 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: 5432574
    Abstract: A single-collapsible-lens reflex camera includes a lens barrel designed such that it is moved forward into shooting position from the camera body when in use and at least its part is collapsed in the camera body when not in use. A shutter release button is provided to shoot a subject when pressed. Electromagnets for controlling the leading and following curtains of a focal plane shutter are deenergized before the shutter release button is pressed and energized when the button is pressed. A mirror drive member raises or lowers a movable reflex mirror when a subject is shot and the lens barrel is collapsed. A shutter charging member moves the focal plan shutter in the direction that charges the focal plane shutter in synchronism with the operation of the mirror driving member to raise the mirror and in the direction that discharges the shutter in synchronism with the operation of the discharges driving member to raise the mirror.
    Type: Grant
    Filed: August 18, 1994
    Date of Patent: July 11, 1995
    Assignee: Olympus Optical Co., Ltd.
    Inventors: Azuma Miyazawa, Atushi Maruyama, Takeshi Ito
  • Patent number: 5051766
    Abstract: An automatic focusing camera includes a first distance measurement circuit for measuring a first distance to an object located at a central portion of a frame, a second distance measurement circuit for measuring a plurality of second distances to other objects located at a peripheral portion of the frame, a CPU for comparing the first and second distance with a shortest photographing distance of the camera, for, when the first distance is shorter than the shortest photographing distance, selecting the shortest photographing distance as an object distance regardless of the second distance, for, when the first distance is not shorter than the shortest photographing distance and the second distance is shorter than the shortest photographing distance, selecting the first distance as the object distance, and for, when the first and second distances are not shorter than the shortest photographing distance, selecting a shorter one of the first and second distances as the object distance, and a mechanism for focusing
    Type: Grant
    Filed: April 4, 1990
    Date of Patent: September 24, 1991
    Assignee: Olympus Optical Co., Ltd.
    Inventors: Osamu Nonaka, Yasuyuki Kawabe, Atushi Maruyama, Tatsuji Higuchi