Patents by Inventor Rakhal Dave

Rakhal Dave 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).

  • Kit for converting a slit lamp biomicroscope into a single aperture confocal scanning biomicroscope
    Patent number: 5099354
    Abstract: A single aperture confocal scanning biomicroscope is disclosed with an illumination system having a pair of lenses surrounding an aperture for collimating a field of light, a pivotally mounted flap for blocking a central portion of the light in order to create peripheral illumination, and an aperture assembly comprised of a cylindrical lens, aperture, and beam splitter which is oscillated within the light field in order to create an aperture size optical beam for scanning a patient's eye and ocular adnexae. With the illumination system of the present invention, techniques involving both direct illumination and indirect illumination may be utilized in examining the eye to produce a true confocal image thereof. Single aperture confocal scanning techniques may be brought to existing slit lamp biomicroscopes with a kit comprised simply of a pair of lenses and an aperture in one embodiment which utilizes the existing illumination system.
    Type: Grant
    Filed: October 29, 1990
    Date of Patent: March 24, 1992
    Assignee: Washington University
    Inventors: Jeffrey W. Lichtman, Jay S. Pepose, Rakhal Dave
  • Single aperture confocal scanning biomicroscope and kit for converting single lamp biomicroscope thereto
    Patent number: 5020891
    Abstract: A single aperture confocal scanning biomicroscope is disclosed with an illumination system having a pair of lenses surrounding an aperture for collimating a field of light, a pivotally mounted flap for blocking a central portion of the light in order to create peripheral illumination, and an aperture assembly comprised of a cylindrical lens, aperture, and beam splitter which is oscillated within the light field in order to create an aperture size optical beam for scanning a patient's eye and ocular adnexae. With the illumination system of the present invention, techniques involving both direct illumination and indirect illumination may be utilized in examining the eye to produce a true confocal image thereof. Single aperture confocal scanning techniques may be brought to existing slit lamp biomicroscopes with a kit comprised simply of a pair of lenses and an aperture in one embodiment which utilizes the existing illumination system.
    Type: Grant
    Filed: December 5, 1989
    Date of Patent: June 4, 1991
    Assignee: Washington University
    Inventors: Jeffrey W. Lichtman, Jay S. Pepose, Rakhal Dave