Patents by Inventor Joseph Zelvin

Joseph Zelvin 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).

  • Retinal imaging system
    Patent number: 7338167
    Abstract: A retinal imaging system includes a light source and optics which receive light from the light source and which transmit the light to produce a beam that is substantially convergent. The beam penetrates a lens of an eye and diverges following penetration of the lens to illuminate an area of a retina of the eye. An imaging device receives a reflection of light from the retina.
    Type: Grant
    Filed: December 10, 2003
    Date of Patent: March 4, 2008
    Assignee: Joslin Diabetes Center, Inc.
    Inventors: Joseph Zelvin, Sven-Erik Bursell
  • Retinal imaging system
    Publication number: 20050134796
    Abstract: A retinal imaging system includes a light source and optics which receive light from the light source and which transmit the light to produce a beam that is substantially convergent. The beam penetrates a lens of an eye and diverges following penetration of the lens to illuminate an area of a retina of the eye. An imaging device receives a reflection of light from the retina.
    Type: Application
    Filed: December 10, 2003
    Publication date: June 23, 2005
    Inventors: Joseph Zelvin, Sven-Erik Bursell
  • Illuminated ring keratometer device
    Patent number: 4772115
    Abstract: A device for causing concentric circles of illuminated light to be reflected from the human cornea. The device includes a cylindrical surface which is open at both ends. At one end the eye looks into the cylinder of the device and at the other end a camera or observer can view the illuminated rings on the cornea. The cylinder is advantageously made of transparent plastic or glass having an opaque coating. A lamp box is affixed to an uncoated portion of the device. The coating of the cylindrical surface through is interrupted to define clear rings on the cylindrical surface which light from the lamp box is conducted to be reflected from the cornea.
    Type: Grant
    Filed: September 2, 1986
    Date of Patent: September 20, 1988
    Assignee: Computed Anatomy Incorporated
    Inventors: Martin Gersten, Richard J. Mammone, Joseph Zelvin