Patents by Inventor Ajoy Kumar Kar

Ajoy Kumar Kar 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).

  • Method of forming an optical device by laser scanning
    Patent number: 11131863
    Abstract: A method of forming an optical device in a body (32), comprises performing a plurality of laser scans (34,36) to form the optical device, each scan comprising relative movement of a laser beam and the body thereby to scan the laser beam along a respective path (34a, 34b 34f; 36a, 36b 36f) through the body to alter the refractive index of material of that path, wherein the paths are arranged to provide in combination a route for propagation of light through the optical device in operation that is larger in a direction substantially perpendicular to the route for propagation of light than any one of the paths individually.
    Type: Grant
    Filed: February 1, 2019
    Date of Patent: September 28, 2021
    Assignee: Optoscribe Limited
    Inventors: Nicholas D. Psaila, Ajoy Kumar Kar, Henry Thomas Gibson Bookey, Robert R. Thomson, Graeme Brown
  • Method Of Forming An Optical Device By Laser Scanning
    Publication number: 20200109084
    Abstract: A method of forming an optical device in a body (32), comprises performing a plurality of laser scans (34,36) to form the optical device, each scan comprising relative movement of a laser beam and the body thereby to scan the laser beam along a respective path (34a, 34b 34f; 36a, 36b 36f) through the body to alter the refractive index of material of that path, wherein the paths are arranged to provide in combination a route for propagation of light through the optical device in operation that is larger in a direction substantially perpendicular to the route for propagation of light than any one of the paths individually.
    Type: Application
    Filed: February 1, 2019
    Publication date: April 9, 2020
    Inventors: Nicholas D. Psaila, Ajoy Kumar Kar, Henry Thomas Gibson Bookey, Robert R. Thomson, Graeme Brown
  • Method of forming an optical device by laser scanning
    Patent number: 10564441
    Abstract: A method of forming an optical device in a body (32), comprises performing a plurality of laser scans (34,36) to form the optical device, each scan comprising relative movement of a laser beam and the body thereby to scan the laser beam along a respective path (34a, 34b 34f; 36a, 36b 36f) through the body to alter the refractive index of material of that path, wherein the paths are arranged to provide in combination a route for propagation of light through the optical device in operation that is larger in a direction substantially perpendicular to the route for propagation of light than any one of the paths individually.
    Type: Grant
    Filed: June 10, 2011
    Date of Patent: February 18, 2020
    Assignee: Optoscribe Limited
    Inventors: Nicholas D Psaila, Ajoy Kumar Kar, Henry Thomas Gibson Bookey, Robert R Thomson, Graeme Brown
  • Method Of Forming An Optical Device By Laser Scanning
    Publication number: 20130208358
    Abstract: A method of forming an optical device in a body (32), comprises performing a plurality of laser scans (34,36) to form the optical device, each scan comprising relative movement of a laser beam and the body thereby to scan the laser beam along a respective path (34a, 34b 34f; 36a, 36b 36f) through the body to alter the refractive index of material of that path, wherein the paths are arranged to provide in combination a route for propagation of light through the optical device in operation that is larger in a direction substantially perpendicular to the route for propagation of light than any one of the paths individually.
    Type: Application
    Filed: June 10, 2011
    Publication date: August 15, 2013
    Inventors: Nicholas D. Psaila, Ajoy Kumar Kar, Henry Thomas Gibson Bookey, Robert R. Thomson, Graeme Brown
  • Waveguide device
    Patent number: 8270784
    Abstract: An optical adapter that is arranged to connect two or more optical devices that have different connector layouts, the optical adapter comprising a material through which a plurality of waveguides is formed, the waveguides defining a first connector configuration at one end or face of the material and a second connector configuration at another, or same end or face of the material.
    Type: Grant
    Filed: June 19, 2008
    Date of Patent: September 18, 2012
    Assignee: Heriot-Watt University
    Inventors: Robert Roderick Thomson, Henry Thomas Gibson Bookey, Nicholas David Psaila, Ajoy Kumar Kar
  • WAVEGUIDE DEVICE
    Publication number: 20100178007
    Abstract: An optical adapter that is arranged to connect two or more optical devices that have different connector layouts, the optical adapter comprising a material through which a plurality of waveguides is formed, the waveguides defining a first connector configuration at one end or face of the material and a second connector configuration at another, or same end or face of the material.
    Type: Application
    Filed: June 19, 2008
    Publication date: July 15, 2010
    Inventors: Robert Roderick Thomson, Henry Thomas Gibson Bookey, Nicholas David Psaila, Ajoy Kumar Kar