Patents by Inventor Juan Luis Arag{dot over (o)}n

Juan Luis Arag{dot over (o)}n 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).

  • Rapid, automatic measurement of the eye's wave aberration
    Patent number: 6827444
    Abstract: A wavefront aberration of an eye is determined, e.g., in real time. The eye is illuminated, and the light reflected from the retina is converted into spots with a device such as a Hartmann-Shack detector. The displacement of each spot from where it would be in the absence of aberration allows calculation of the aberration. Each spot is located by an iterative technique in which a corresponding centroid is located in a box drawn on the image data, a smaller box is defined around the centroid, the centroid is located in the smaller box, and so on. The wavefront aberration is calculated from the centroid locations by using a matrix in which unusable data can be eliminated simply by eliminating rows of the matrix. Aberrations for different pupil sizes are handled in data taken for a single pupil size by renormalization.
    Type: Grant
    Filed: April 19, 2002
    Date of Patent: December 7, 2004
    Assignee: University of Rochester
    Inventors: David R. Williams, William J. Vaughn, Benjamin D. Singer, Heidi Hofer, Geun-Young Yoon, Pablo Artal, Juan Luis Arag{dot over (o)}n, Pedro Prieto, Fernando Vargas
  • Rapid, automatic measurement of the eye's wave aberration
    Patent number: 6199986
    Abstract: A wavefront aberration of an eye is determined, e.g., in real time. The eye is illuminated, and the light reflected from the retina is converted into spots with a device such as a Hartmann-Shack detector. The displacement of each spot from where it would be in the absence of aberration allows calculation of the aberration. Each spot is located by an iterative technique in which a corresponding centroid is located in a box drawn on the image data, a smaller box is defined around the centroid, the centroid is located in the smaller box, and so on. The wavefront aberration is calculated from the centroid locations by using a matrix in which unusable data can be eliminated simply by eliminating rows of the matrix. Aberrations for different pupil sizes are handled in data taken for a single pupil size by renormalization.
    Type: Grant
    Filed: October 21, 1999
    Date of Patent: March 13, 2001
    Assignee: University of Rochester
    Inventors: David R. Williams, William J. Vaughn, Benjamin D. Singer, Heidi Hofer, Geun-Young Yoon, Pablo Artal, Juan Luis Arag{dot over (o)}n, Pedro Prieto, Fernando Vargas