Patents by Inventor R. Alfred Gunasekaran

R. Alfred Gunasekaran 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).

  • Wide-angle variable focal length lens system
    Patent number: 7440193
    Abstract: A variable focal length microlens system having a base section with a fluid chamber and a fluid pressurization mechanism. A flexible, substantially transparent polymer lens section is fixed above the fluid chamber and the lens section has a curvature providing an initial focal point when in an unstrained state. The fluid chamber is substantially sealed and the fluid pressurization mechanism includes a flexible wall in the base section. The flexible wall may be displaced by magnetic activation, PZT activation of another activating mechanism.
    Type: Grant
    Filed: January 14, 2008
    Date of Patent: October 21, 2008
    Inventors: R. Alfred Gunasekaran, Ji Fang, Jackie Chen, Weisong Wang, Kody Varahramyan, Mangilal Agarwal
  • Wide-Angle Variable Focal Length Lens System
    Publication number: 20080144187
    Abstract: A variable focal length microlens system having a base section with a fluid chamber and a fluid pressurization mechanism. A flexible, substantially transparent polymer lens section is fixed above the fluid chamber and the lens section has a curvature providing an initial focal point when in an unstrained state. The fluid chamber is substantially sealed and the fluid pressurization mechanism includes a flexible wall in the base section. The flexible wall may be displaced by magnetic activation, PZT activation of another activating mechanism.
    Type: Application
    Filed: January 14, 2008
    Publication date: June 19, 2008
    Inventors: R. Alfred Gunasekaran, Mangilal Agarwal, Ji Fang, Jackie Chen, Weisong Wang, Kody Varahramyan
  • Wide-angle variable focal length lens system
    Patent number: 7359124
    Abstract: A variable focal length microlens system having a base section with a fluid chamber and a fluid pressurization mechanism. A flexible, substantially transparent polymer lens section is fixed above the fluid chamber and the lens section has a curvature providing an initial focal point when in an unstrained state. The fluid chamber is substantially sealed and the fluid pressurization mechanism includes a flexible wall in the base section. The flexible wall may be displaced by magnetic activation, PZT activation of another activating mechanism.
    Type: Grant
    Filed: April 30, 2005
    Date of Patent: April 15, 2008
    Assignee: Louisiana Tech University Research Foundation as a division of the Louisiana Tech University Foundation
    Inventors: Ji Fang, Jackie Chen, Weisong Wang, Kody Varahramyan, R. Alfred Gunasekaran, Mangilal Agarwal