Patents by Inventor Sri Rajeasekhar Kothapalli

Sri Rajeasekhar Kothapalli 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).

  • Systems and methods of all-optical fourier phase contrast imaging using dye doped liquid crystals
    Patent number: 7880820
    Abstract: An assembly for converting a microscope into a phase contrast microscope includes a first optical Fourier element that Fourier transforms light from a coherent light source, a cell in the Fourier plane arranged to receive light from the first optical Fourier element, a second optical Fourier element arranged to receive light from the cell and inversely Fourier transform the received light to provide an image, an image sensor that detects the image and generates an electronic representation of the image, and an adaptor capable of coupling the first and second Fourier elements, the cell, and the image sensor to the microscope such that the first Fourier element Fourier transforms light collected by the microscope objective.
    Type: Grant
    Filed: June 8, 2010
    Date of Patent: February 1, 2011
    Assignee: University of Massachusetts
    Inventors: Chandra S. Yelleswarapu, Sri Rajeasekhar Kothapalli, D. V. Gopal L. N. Rao