Patents by Inventor Eric James Barton

Eric James Barton 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).

  • Optical motion encoder with a reflective member allowing the light source and sensor to be on the same side
    Patent number: 6653619
    Abstract: An optical motion encoder for translation of movement information into a digital output. The optical encoder includes an optical member having a parabolic reflecting surface and a planar surface with a code pattern printed thereon. The light rays received by the parabolic reflecting surface from a light source positioned on the axis of symmetry of the parabolic reflecting surface are reflected as parallel light rays through the planar surface to be modulated by the code pattern and detected by a light detector. In this way, both, the collimator and the code wheel or code strip of prior art optical encoders are represented by a single optical member.
    Type: Grant
    Filed: September 12, 2001
    Date of Patent: November 25, 2003
    Assignee: Agilent Technologies, Inc.
    Inventors: Yee Loong Chin, Kok Hing Fo, Hoo Chong Wong, Eric James Barton
  • Optical motion encoder
    Publication number: 20020038848
    Abstract: An optical motion encoder for translation of movement information into a digital output. The optical encoder includes an optical member having a parabolic reflecting surface and a planar surface with a code pattern printed thereon. The light rays received by the parabolic reflecting surface from a light source positioned on the axis of symmetry of the parabolic reflecting surface are reflected as parallel light rays through the planar surface to be modulated by the code pattern and detected by a light detector. In this way, both, the collimator and the code wheel or code strip of prior art optical encoders are represented by a single optical member.
    Type: Application
    Filed: September 12, 2001
    Publication date: April 4, 2002
    Inventors: Yee Loong Chin, Kok Hing Fo, Hoo Chong Wong, Eric James Barton