Patents by Inventor Roozbeh Ahmadi

Roozbeh Ahmadi 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).

  • Patent number: 11937403
    Abstract: A heatsink may include a base and a plurality of fins, configured to be disposed in an air flow, that extend orthogonally from the base. The plurality of fins may have at least one of a height, an inter-fin spacing, or a thickness that varies in a direction of the air flow.
    Type: Grant
    Filed: March 27, 2020
    Date of Patent: March 19, 2024
    Assignee: Lumentum Operations LLC
    Inventors: Roozbeh Ahmadi, Dean Flockton, Doug Cross
  • Patent number: 11728611
    Abstract: An optical device may include an enclosure including an optical aperture and a plurality of optical components positioned within the enclosure, where the plurality of optical components are to emit and/or receive light through the optical aperture. The optical device may include at least one heating element or cooling element to provide an isothermal environment to the plurality of optical components, where the at least one heating element or cooling element is thermally coupled with the enclosure.
    Type: Grant
    Filed: December 12, 2019
    Date of Patent: August 15, 2023
    Assignee: Lumentum Operations LLC
    Inventors: Roozbeh Ahmadi, Nenad Duricic, Doug Cross
  • Patent number: 11726280
    Abstract: An opto-mechanical assembly includes a first thermal control element disposed on a region of a first section of an enclosure; a second thermal control element disposed on a region of a second section of the enclosure; and an optical element that includes a first portion and a second portion. The first thermal control element is configured to heat the first portion of the optical element and to cause the first portion of the optical element to be associated with a first temperature, and the second thermal control element is configured to heat the second portion of the optical element and to cause the second portion of the optical element to be associated with a second temperature. This causes a difference between the first temperature and the second temperature to satisfy a temperature difference threshold. Accordingly, this also causes a temperature gradient along an axis of the optical element to satisfy a temperature gradient threshold.
    Type: Grant
    Filed: June 24, 2021
    Date of Patent: August 15, 2023
    Assignee: Lumentum Operations LLC
    Inventors: Roozbeh Ahmadi, Nenad Duricic, Shane H. Woodside, Doug Cross, Andrew Telford
  • Patent number: 11686907
    Abstract: A pluggable optical module may include a substrate. The pluggable optical module may include a compressible sliding thermal interface disposed on the substrate to contact a riding heatsink. The compressible sliding thermal interface material may be compressed to fill interstices between a first surface of the substrate and a second surface of the riding heatsink. The compressible sliding thermal interface may protrude from the first surface of the substrate such that insertion of the pluggable optical module into a cage compresses the compressible sliding thermal interface to achieve a threshold thermal boundary resistance.
    Type: Grant
    Filed: July 15, 2022
    Date of Patent: June 27, 2023
    Assignee: Lumentum Operations LLC
    Inventors: Roozbeh Ahmadi, Thomas Haslam, Shane H. Woodside
  • Publication number: 20220350098
    Abstract: A pluggable optical module may include a substrate. The pluggable optical module may include a compressible sliding thermal interface disposed on the substrate to contact a riding heatsink. The compressible sliding thermal interface material may be compressed to fill interstices between a first surface of the substrate and a second surface of the riding heatsink. The compressible sliding thermal interface may protrude from the first surface of the substrate such that insertion of the pluggable optical module into a cage compresses the compressible sliding thermal interface to achieve a threshold thermal boundary resistance.
    Type: Application
    Filed: July 15, 2022
    Publication date: November 3, 2022
    Inventors: Roozbeh AHMADI, Thomas HASLAM, Shane H. WOODSIDE
  • Publication number: 20220326458
    Abstract: An opto-mechanical assembly includes a first thermal control element disposed on a region of a first section of an enclosure; a second thermal control element disposed on a region of a second section of the enclosure; and an optical element that includes a first portion and a second portion. The first thermal control element is configured to heat the first portion of the optical element and to cause the first portion of the optical element to be associated with a first temperature, and the second thermal control element is configured to heat the second portion of the optical element and to cause the second portion of the optical element to be associated with a second temperature. This causes a difference between the first temperature and the second temperature to satisfy a temperature difference threshold. Accordingly, this also causes a temperature gradient along an axis of the optical element to satisfy a temperature gradient threshold.
    Type: Application
    Filed: June 24, 2021
    Publication date: October 13, 2022
    Inventors: Roozbeh AHMADI, Nenad DURICIC, Shane H. WOODSIDE, Doug CROSS, Andrew TELFORD
  • Publication number: 20220229260
    Abstract: An optical bench may include an integrated heater. The integrated heater may include a substrate and a heating element disposed onto the substrate. The heating element may include at least one electrical trace. The integrated heater may be associated with a non-monolithic shape configured to cause the heating element to heat an optical device disposed in proximity to the optical bench with a temperature gradient of less than a threshold. The integrated heater may be disposed onto at least one of a surface of the optical bench or a surface of an optical component of the optical device.
    Type: Application
    Filed: April 4, 2022
    Publication date: July 21, 2022
    Inventors: Roozbeh AHMADI, Doug CROSS, Nenad DURICIC, Martin MATTHEWS
  • Patent number: 11391899
    Abstract: A pluggable optical module may include a substrate. The pluggable optical module may include a compressible sliding thermal interface disposed on the substrate to contact a riding heatsink. The compressible sliding thermal interface material may be compressed to fill interstices between a first surface of the substrate and a second surface of the riding heatsink. The compressible sliding thermal interface may protrude from the first surface of the substrate such that insertion of the pluggable optical module into a cage compresses the compressible sliding thermal interface to achieve a threshold thermal boundary resistance.
    Type: Grant
    Filed: February 4, 2019
    Date of Patent: July 19, 2022
    Assignee: Lumentum Operations LLC
    Inventors: Roozbeh Ahmadi, Thomas Haslam, Shane H. Woodside
  • Publication number: 20210127524
    Abstract: A heatsink may include a base and a plurality of fins, configured to be disposed in an air flow, that extend orthogonally from the base. The plurality of fins may have at least one of a height, an inter-fin spacing, or a thickness that varies in a direction of the air flow.
    Type: Application
    Filed: March 27, 2020
    Publication date: April 29, 2021
    Inventors: Roozbeh AHMADI, Dean FLOCKTON, Doug CROSS
  • Publication number: 20210063685
    Abstract: An optical device may include an enclosure including an optical aperture and a plurality of optical components positioned within the enclosure, where the plurality of optical components are to emit and/or receive light through the optical aperture. The optical device may include at least one heating element or cooling element to provide an isothermal environment to the plurality of optical components, where the at least one heating element or cooling element is thermally coupled with the enclosure.
    Type: Application
    Filed: December 12, 2019
    Publication date: March 4, 2021
    Inventors: Roozbeh AHMADI, Nenad DURICIC, Doug CROSS
  • Patent number: 10684441
    Abstract: A method may include identifying, by a device, a set of components of an optical device. The method may include determining, by the device, a set of design criteria based on the set of components of the optical device. The method may include identifying, by the device, an initial heater configuration based on the set of design criteria. The method may include determining, by the device, a set of optimization parameters for determining a target heater configuration based on the set of design criteria. The method may include performing, by the device and based on the set of optimization parameters, an optimization procedure to alter the initial heater configuration to determine the target heater configuration. The method may include providing, by the device, information identifying the target heater configuration based on performing the optimization procedure.
    Type: Grant
    Filed: September 27, 2017
    Date of Patent: June 16, 2020
    Assignee: Lumentum Operations LLC
    Inventors: Roozbeh Ahmadi, Doug Cross, Nenad Duricic, Martin Matthews
  • Patent number: 10585331
    Abstract: A liquid crystal on substrate (LCOS) assembly may include an LCOS carrier. The LCOS assembly may include at least one thick layer on the LCOS carrier and associated with a threshold thickness. The threshold thickness may be at least 5 micrometers. The LCOS assembly may include a switching engine on the at least one thick layer. The switching engine may include an LCOS die and an LCOS cover glass to enclose an LCOS liquid. The LCOS assembly may be associated with a thermal sensitivity of less than 0.5 millidegrees of curvature per degree Celsius for a particular temperature range.
    Type: Grant
    Filed: March 13, 2018
    Date of Patent: March 10, 2020
    Assignee: Lumentum Operations LLC
    Inventors: Roozbeh Ahmadi, Wenlin Jin
  • Publication number: 20190243080
    Abstract: A pluggable optical module may include a substrate. The pluggable optical module may include a compressible sliding thermal interface disposed on the substrate to contact a riding heatsink. The compressible sliding thermal interface material may be compressed to fill interstices between a first surface of the substrate and a second surface of the riding heatsink. The compressible sliding thermal interface may protrude from the first surface of the substrate such that insertion of the pluggable optical module into a cage compresses the compressible sliding thermal interface to achieve a threshold thermal boundary resistance.
    Type: Application
    Filed: February 4, 2019
    Publication date: August 8, 2019
    Inventors: Roozbeh AHMADI, Thomas Haslam, Shane H. Woodside
  • Publication number: 20190094481
    Abstract: A method may include identifying, by a device, a set of components of an optical device. The method may include determining, by the device, a set of design criteria based on the set of components of the optical device. The method may include identifying, by the device, an initial heater configuration based on the set of design criteria. The method may include determining, by the device, a set of optimization parameters for determining a target heater configuration based on the set of design criteria. The method may include performing, by the device and based on the set of optimization parameters, an optimization procedure to alter the initial heater configuration to determine the target heater configuration. The method may include providing, by the device, information identifying the target heater configuration based on performing the optimization procedure.
    Type: Application
    Filed: September 27, 2017
    Publication date: March 28, 2019
    Inventors: Roozbeh AHMADI, Doug CROSS, Nenad DURICIC, Martin MATTHEWS
  • Publication number: 20190094482
    Abstract: An optical bench may include an integrated heater. The integrated heater may include a substrate and a heating element disposed onto the substrate. The heating element may include at least one electrical trace. The integrated heater may be associated with a non-monolithic shape configured to cause the heating element to heat an optical device disposed in proximity to the optical bench with a temperature gradient of less than a threshold. The integrated heater may be disposed onto at least one of a surface of the optical bench or a surface of an optical component of the optical device.
    Type: Application
    Filed: September 27, 2017
    Publication date: March 28, 2019
    Inventors: Roozbeh AHMADI, Doug CROSS, Nenad DURICIC, Martin MATTHEWS
  • Publication number: 20190086762
    Abstract: A liquid crystal on substrate (LCOS) assembly may include an LCOS carrier. The LCOS assembly may include at least one thick layer on the LCOS carrier and associated with a threshold thickness. The threshold thickness may be at least 5 micrometers. The LCOS assembly may include a switching engine on the at least one thick layer. The switching engine may include an LCOS die and an LCOS cover glass to enclose an LCOS liquid. The LCOS assembly may be associated with a thermal sensitivity of less than 0.5 millidegrees of curvature per degree Celsius for a particular temperature range.
    Type: Application
    Filed: March 13, 2018
    Publication date: March 21, 2019
    Inventors: Roozbeh Ahmadi, Wenlin Jin
  • Patent number: 9863825
    Abstract: A sensing element for sensing a mechanical property of a sample defining a sample surface using a contact force exerted the sample surface. The sensing element includes: a deformable element defining a contact surface and a deformable section in register with the contact surface, the deformable section being deformable between an undeformed configuration and a deformed configuration; a deformation sensor operatively coupled to the deformable section for sensing and quantifying a deformation of the deformable section between the deformed and undeformed configurations, the deformation sensor being an optical deformation sensor; and a force sensor operatively coupled to the deformable element for sensing the contact force exerted on the contact surface.
    Type: Grant
    Filed: May 24, 2016
    Date of Patent: January 9, 2018
    Inventors: Muthukumaran Packirisamy, Roozbeh Ahmadi, Javad Dargahi
  • Publication number: 20160265989
    Abstract: A sensing element for sensing a mechanical property of a sample defining a sample surface using a contact force exerted the sample surface. The sensing element includes: a deformable element defining a contact surface and a deformable section in register with the contact surface, the deformable section being deformable between an undeformed configuration and a deformed configuration; a deformation sensor operatively coupled to the deformable section for sensing and quantifying a deformation of the deformable section between the deformed and undeformed configurations, the deformation sensor being an optical deformation sensor; and a force sensor operatively coupled to the deformable element for sensing the contact force exerted on the contact surface.
    Type: Application
    Filed: May 24, 2016
    Publication date: September 15, 2016
    Inventors: Muthukumaran Packirisamy, Roozbeh Ahmadi, Javad Dargahi
  • Publication number: 20130220032
    Abstract: A sensing element for sensing a mechanical property of a sample defining a sample surface using a contact force exerted the sample surface. The sensing element includes: a deformable element defining a contact surface and a deformable section in register with the contact surface, the deformable section being deformable between an undeformed configuration and a deformed configuration; a deformation sensor operatively coupled to the deformable section for sensing and quantifying a deformation of the deformable section between the deformed and undeformed configurations, the deformation sensor being an optical deformation sensor; and a force sensor operatively coupled to the deformable element for sensing the contact force exerted on the contact surface.
    Type: Application
    Filed: October 26, 2011
    Publication date: August 29, 2013
    Inventors: Muthukumaran Packirisamy, Roozbeh Ahmadi, Javad Dargahi