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: 11937403Abstract: 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: GrantFiled: March 27, 2020Date of Patent: March 19, 2024Assignee: Lumentum Operations LLCInventors: Roozbeh Ahmadi, Dean Flockton, Doug Cross
-
Patent number: 11728611Abstract: 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: GrantFiled: December 12, 2019Date of Patent: August 15, 2023Assignee: Lumentum Operations LLCInventors: Roozbeh Ahmadi, Nenad Duricic, Doug Cross
-
Patent number: 11726280Abstract: 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: GrantFiled: June 24, 2021Date of Patent: August 15, 2023Assignee: Lumentum Operations LLCInventors: Roozbeh Ahmadi, Nenad Duricic, Shane H. Woodside, Doug Cross, Andrew Telford
-
Patent number: 11686907Abstract: 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: GrantFiled: July 15, 2022Date of Patent: June 27, 2023Assignee: Lumentum Operations LLCInventors: Roozbeh Ahmadi, Thomas Haslam, Shane H. Woodside
-
Publication number: 20220350098Abstract: 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: ApplicationFiled: July 15, 2022Publication date: November 3, 2022Inventors: Roozbeh AHMADI, Thomas HASLAM, Shane H. WOODSIDE
-
Publication number: 20220326458Abstract: 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: ApplicationFiled: June 24, 2021Publication date: October 13, 2022Inventors: Roozbeh AHMADI, Nenad DURICIC, Shane H. WOODSIDE, Doug CROSS, Andrew TELFORD
-
Publication number: 20220229260Abstract: 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: ApplicationFiled: April 4, 2022Publication date: July 21, 2022Inventors: Roozbeh AHMADI, Doug CROSS, Nenad DURICIC, Martin MATTHEWS
-
Patent number: 11391899Abstract: 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: GrantFiled: February 4, 2019Date of Patent: July 19, 2022Assignee: Lumentum Operations LLCInventors: Roozbeh Ahmadi, Thomas Haslam, Shane H. Woodside
-
Publication number: 20210127524Abstract: 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: ApplicationFiled: March 27, 2020Publication date: April 29, 2021Inventors: Roozbeh AHMADI, Dean FLOCKTON, Doug CROSS
-
Publication number: 20210063685Abstract: 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: ApplicationFiled: December 12, 2019Publication date: March 4, 2021Inventors: Roozbeh AHMADI, Nenad DURICIC, Doug CROSS
-
Patent number: 10684441Abstract: 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: GrantFiled: September 27, 2017Date of Patent: June 16, 2020Assignee: Lumentum Operations LLCInventors: Roozbeh Ahmadi, Doug Cross, Nenad Duricic, Martin Matthews
-
Patent number: 10585331Abstract: 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: GrantFiled: March 13, 2018Date of Patent: March 10, 2020Assignee: Lumentum Operations LLCInventors: Roozbeh Ahmadi, Wenlin Jin
-
Publication number: 20190243080Abstract: 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: ApplicationFiled: February 4, 2019Publication date: August 8, 2019Inventors: Roozbeh AHMADI, Thomas Haslam, Shane H. Woodside
-
Publication number: 20190094481Abstract: 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: ApplicationFiled: September 27, 2017Publication date: March 28, 2019Inventors: Roozbeh AHMADI, Doug CROSS, Nenad DURICIC, Martin MATTHEWS
-
Publication number: 20190094482Abstract: 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: ApplicationFiled: September 27, 2017Publication date: March 28, 2019Inventors: Roozbeh AHMADI, Doug CROSS, Nenad DURICIC, Martin MATTHEWS
-
Publication number: 20190086762Abstract: 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: ApplicationFiled: March 13, 2018Publication date: March 21, 2019Inventors: Roozbeh Ahmadi, Wenlin Jin
-
Patent number: 9863825Abstract: 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: GrantFiled: May 24, 2016Date of Patent: January 9, 2018Inventors: Muthukumaran Packirisamy, Roozbeh Ahmadi, Javad Dargahi
-
Publication number: 20160265989Abstract: 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: ApplicationFiled: May 24, 2016Publication date: September 15, 2016Inventors: Muthukumaran Packirisamy, Roozbeh Ahmadi, Javad Dargahi
-
Publication number: 20130220032Abstract: 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: ApplicationFiled: October 26, 2011Publication date: August 29, 2013Inventors: Muthukumaran Packirisamy, Roozbeh Ahmadi, Javad Dargahi