Patents by Inventor Norio Masada

Norio Masada 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).

  • Photoelectric encoder, scale and method of manufacturing scale
    Patent number: 7619208
    Abstract: A photoelectric encoder includes: a scale having a grating formed thereon along a measuring axis; a light source operative to emit light to the scale so as to form a light spot on the grating; and a photoreceiver operative to receive reflected light from the scale. The light source and the photoreceiver are disposed so as to be allowed to move relative to the scale at least in a direction along the measuring axis. The light source emits the light to the scale so that the photoreceiver receives the reflected light by the scale. The light source emits light with different wavelengths. The scale includes a plurality of reflection portions that respectively reflect the light with different wavelengths.
    Type: Grant
    Filed: October 25, 2007
    Date of Patent: November 17, 2009
    Assignee: Mitutoyo Corporation
    Inventors: Norio Masada, Yukinari Nozawa, Toru Yaku
  • Photoelectric encoder, scale and method of manufacturing scale
    Publication number: 20080099666
    Abstract: A photoelectric encoder includes: a scale having a grating formed thereon along a measuring axis; a light source operative to emit light to the scale so as to form a light spot on the grating; and a photoreceiver operative to receive reflected light from the scale. The light source and the photoreceiver are disposed so as to be allowed to move relative to the scale at least in a direction along the measuring axis. The light source emits the light to the scale so that the photoreceiver receives the reflected light by the scale. The light source emits light with different wavelengths. The scale includes a plurality of reflection portions that respectively reflect the light with different wavelengths.
    Type: Application
    Filed: October 25, 2007
    Publication date: May 1, 2008
    Applicant: MITUTOYO CORPORATION
    Inventors: Norio MASADA, Yukinari NOZAWA, Toru YAKU