Patents by Inventor Akio Ioka

Akio Ioka 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).

  • Contact reading image sensor with a rod lens array
    Patent number: 5038027
    Abstract: An image sensor includes a rod lens array. The rod lens array includes a plurality of rod lenses which are placed within a frame. The frame has an engagement part to secure it to a housing of the image sensor. The engagement part can be a groove in the frame which is secured to the housing by a ridge in the housing. In an alternative, the engagement part can be flanges on the frame which are engaged with shoulders in the housing. No adjusting mechanism for the array such as an adjustment screw, is needed.
    Type: Grant
    Filed: April 16, 1990
    Date of Patent: August 6, 1991
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventor: Akio Ioka
  • Multibeam optical modulation and deflection apparatus
    Patent number: 4444470
    Abstract: An acousto-optic deflector is supplied with a beam of laser light and driven in a parallel relationship with a plurality of high frequency signals to produce a plurality of diffracted deflected beams of laser light. The high frequency signals have phases independently controlled so as to prevent the resultant combination of the high frequency signals from having an excessively high peak-to-peak amplitude.
    Type: Grant
    Filed: October 14, 1981
    Date of Patent: April 24, 1984
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Akio Ioka, Koichiro Kurahashi