Patents by Inventor Giorgio Giaretta
Giorgio Giaretta 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).
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Publication number: 20230136379Abstract: Methods and systems are described for free space optical communication. An example device may comprise an optical beam separator configured to separate a first optical path into a receiving (Rx) optical path for signals received from free space and a transmitting (Tx) optical path for signals being transmitted into free space. The example device may comprise at least one positioner coupled to one or more of the Rx optical path or the Tx optical path. The example device may comprise a controller configured to control the at least one positioner to adjust one or more of the Rx optical path or the Tx optical path to facilitate communication with a remote communication device via free space.Type: ApplicationFiled: October 31, 2022Publication date: May 4, 2023Inventors: David A. PECHNER, William C. Dickson, Bjoern Hall, Angus Henderson, Andrew Olson, Giorgio Giaretta, Greg G. Mitchell, Mohammad Noshad
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Patent number: 11604396Abstract: Optical modulators are described having a Mach-Zehnder interferometer and a pair of RF electrodes interfaced with the Mach-Zehnder interferometer in which the Mach-Zehnder interferometer comprises optical waveguides formed from semiconductor material. The optical modulator additionally comprises a plurality of phase shifters configured to interface with the plurality of interconnected optical waveguides such that at least one phase shifter of the plurality of phase shifters is interfaced with at least one optical waveguide of the plurality of interconnected optical waveguides. A phase shifter controller, including an energy source with a variable output controlled by the controller and a plurality of electrical connections connecting the energy source to each of the plurality of phase shifters, is also included. In various embodiments, the plurality of electrical connections are configured to provide approximately equal power to each of the phase shifting elements from the energy source.Type: GrantFiled: August 11, 2021Date of Patent: March 14, 2023Assignee: NeoPhotonics CorporationInventors: Giorgio Giaretta, Alessio Pirastu
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Publication number: 20210373411Abstract: Optical modulators are described having a Mach-Zehnder interferometer and a pair of RF electrodes interfaced with the Mach-Zehnder interferometer in which the Mach-Zehnder interferometer comprises optical waveguides formed from semiconductor material. The optical modulator additionally comprises a plurality of phase shifters configured to interface with the plurality of interconnected optical waveguides such that at least one phase shifter of the plurality of phase shifters is interfaced with at least one optical waveguide of the plurality of interconnected optical waveguides. A phase shifter controller, including an energy source with a variable output controlled by the controller and a plurality of electrical connections connecting the energy source to each of the plurality of phase shifters, is also included. In various embodiments, the plurality of electrical connections are configured to provide approximately equal power to each of the phase shifting elements from the energy source.Type: ApplicationFiled: August 11, 2021Publication date: December 2, 2021Inventors: Giorgio Giaretta, Alessio Pirastu
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Patent number: 11119380Abstract: Optical modulators are described having a Mach-Zehnder interferometer and a pair of RF electrodes interfaced with the Mach-Zehnder interferometer in which the Mach-Zehnder interferometer comprises optical waveguides formed from semiconductor material. The optical modulator additionally comprises a plurality of phase shifters configured to interface with the plurality of interconnected optical waveguides such that at least one phase shifter of the plurality of phase shifters is interfaced with at least one optical waveguide of the plurality of interconnected optical waveguides. A phase shifter controller, including an energy source with a variable output controlled by the controller and a plurality of electrical connections connecting the energy source to each of the plurality of phase shifters, is also included. In various embodiments, the plurality of electrical connections are configured to provide approximately equal power to each of the phase shifting elements from the energy source.Type: GrantFiled: September 23, 2019Date of Patent: September 14, 2021Assignee: NeoPhotonics CorporationInventors: Giorgio Giaretta, Alessio Pirastu
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Publication number: 20200096834Abstract: Optical modulators are described having a Mach-Zehnder interferometer and a pair of RF electrodes interfaced with the Mach-Zehnder interferometer in which the Mach-Zehnder interferometer comprises optical waveguides formed from semiconductor material. The optical modulator additionally comprises a plurality of phase shifters configured to interface with the plurality of interconnected optical waveguides such that at least one phase shifter of the plurality of phase shifters is interfaced with at least one optical waveguide of the plurality of interconnected optical waveguides. A phase shifter controller, including an energy source with a variable output controlled by the controller and a plurality of electrical connections connecting the energy source to each of the plurality of phase shifters, is also included. In various embodiments, the plurality of electrical connections are configured to provide approximately equal power to each of the phase shifting elements from the energy source.Type: ApplicationFiled: September 23, 2019Publication date: March 26, 2020Inventors: Giorgio Giaretta, Alessio Pirastu
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Patent number: 9977189Abstract: Apparatus and methods are described herein for cleaving an optical element at a defined distance from a splice (or other reference point/feature) of the optical element within a desired precision and/or accuracy. In some embodiments, a method includes receiving an indication of a location of a feature in an intermediate optical assembly visible within an image of the intermediate optical assembly. The feature can be for example, a splice. A position of the intermediate optical assembly is translated relative to a cleave unit based on the indication. After translating, the intermediate optical assembly, the intermediate optical assembly is cleaved to form an optical assembly that has an end face at a location disposed at a non-zero distance from the location of the feature. In some embodiments, the location of the feature can be determined with an image recognition system.Type: GrantFiled: June 9, 2016Date of Patent: May 22, 2018Assignee: THORLABS, INC.Inventors: Giorgio Giaretta, Timothy J. Howell, Michael E. Harju, Ying Qin
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Patent number: 9692946Abstract: In one embodiment the present invention includes a display system for displaying video. The display system includes a backlight layer and an LCD layer. The display system controls the backlight layer and the LCD layer to emulate a cathode ray tube response. This emulation may be accomplished by applying a gamma function to a gamma corrected input signal. In this manner, the effects resulting from the “crushed blacks” phenomenon may be reduced.Type: GrantFiled: June 28, 2010Date of Patent: June 27, 2017Assignee: Dolby Laboratories Licensing CorporationInventors: Trevor Davies, Giorgio Giaretta, Saagar Patel, Jared Smith, Chun Chi Wan, Christopher Orlick
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Publication number: 20170118460Abstract: Systems and methods are provided for displaying three-dimensional image data on a display having a light source modulation layer and a display modulation layer. The light source modulation layer has light sources for providing spatially modulated, spectrally separated light for displaying time-multiplexed left and right eye images. The display modulation layer has pixels for spatially modulating the amount of light received from the light source modulation layer.Type: ApplicationFiled: January 9, 2017Publication date: April 27, 2017Applicant: Dolby Laboratories Licensing CorporationInventors: Brad Basler, Giorgio Giaretta
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Patent number: 9544579Abstract: Systems and methods are provided for displaying three-dimensional image data on a display having a light source modulation layer and a display modulation layer. The light source modulation layer has light sources for providing spatially modulated, spectrally separated light for displaying time-multiplexed left and right eye images. The display modulation layer has pixels for spatially modulating the amount of light received from the light source modulation layer.Type: GrantFiled: December 17, 2015Date of Patent: January 10, 2017Assignee: Dolby Laboratories Licensing CorporationInventors: Brad Basler, Giorgio Giaretta
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Publication number: 20160327744Abstract: Apparatus and methods are described herein for cleaving an optical element at a defined distance from a splice (or other reference point/feature) of the optical element within a desired precision and/or accuracy. In some embodiments, a method includes receiving an indication of a location of a feature in an intermediate optical assembly visible within an image of the intermediate optical assembly. The feature can be for example, a splice. A position of the intermediate optical assembly is translated relative to a cleave unit based on the indication. After translating, the intermediate optical assembly, the intermediate optical assembly is cleaved to form an optical assembly that has an end face at a location disposed at a non-zero distance from the location of the feature. In some embodiments, the location of the feature can be determined with an image recognition system.Type: ApplicationFiled: June 9, 2016Publication date: November 10, 2016Inventors: Giorgio Giaretta, Timothy J. Howell, Michael E. Harju, Ying Qin
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Patent number: 9377583Abstract: Apparatus and methods are described herein for cleaving an optical element at a defined distance from a splice (or other reference point/feature) of the optical element within a desired precision and/or accuracy. In some embodiments, a method includes receiving an indication of a location of a feature in an intermediate optical assembly visible within an image of the intermediate optical assembly. The feature can be for example, a splice. A position of the intermediate optical assembly is translated relative to a cleave unit based on the indication. After translating, the intermediate optical assembly, the intermediate optical assembly is cleaved to form an optical assembly that has an end face at a location disposed at a non-zero distance from the location of the feature. In some embodiments, the location of the feature can be determined with an image recognition system.Type: GrantFiled: February 13, 2013Date of Patent: June 28, 2016Assignee: Thorlabs, Inc.Inventors: Giorgio Giaretta, Timothy J. Howell, Michael E. Harju, Ying Qin
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Patent number: 9329430Abstract: A display including an image-generating panel and at least one contrast-enhancing panel, a cross BEF collimator between a backlight and one of the panels, and a polarization-preserving diffuser (e.g., holographic diffuser) between the panels. Typically, the contrast panel is upstream of the image panel, and a reflective polarizer is positioned between the cross BEF collimator or and contrast panel, with the reflective polarizer oriented relative to an initial polarizer of the contrast panel. Polarization of light transmitted by the reflective polarizer matches that transmitted by the initial polarizer. Collimated light propagating from the cross BEF collimator toward the contrast-enhancing panel is given a polarization bias by the reflective polarizer, which reflects incorrectly polarized light back toward the cross BEF collimator.Type: GrantFiled: April 25, 2012Date of Patent: May 3, 2016Assignee: Dolby Laboratories Licensing CorporationInventors: Gopal Erinjippurath, John Gilbert, Giorgio Giaretta, Vincent Kwong
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Publication number: 20160105666Abstract: Systems and methods are provided for displaying three-dimensional image data on a display having a light source modulation layer and a display modulation layer. The light source modulation layer has light sources for providing spatially modulated, spectrally separated light for displaying time-multiplexed left and right eye images. The display modulation layer has pixels for spatially modulating the amount of light received from the light source modulation layer.Type: ApplicationFiled: December 17, 2015Publication date: April 14, 2016Applicant: Dolby Laboratories Licensing CorporationInventors: Brad Basler, Giorgio Giaretta
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Patent number: 9299293Abstract: Methods and apparatus are provided for backlighting a dual modulation display device. Each type of light source comprises a multi-primary light source having two or more primary color light emitters having different primary color characteristics from corresponding primary color emitters of other types of light source. Methods may comprise receiving illumination target values for a plurality of locations on the front modulator corresponding to the plurality of light sources, each of the locations on the front modulator configured to be illuminated by two or more of the plurality of light sources, determining primary color drive values source based on the primary color characteristics for that primary color and the illumination target value for the location corresponding to that light source, and driving the primary color light emitters or each type of light source based on the primary color drive values.Type: GrantFiled: October 12, 2012Date of Patent: March 29, 2016Assignee: Dobly Laboratories Licensing CorporationInventors: Chun Chi Thomas Wan, Giorgio Giaretta, Lewis Johnson, Ka Wing Terence Lau, Christopher Orlick, Neil Messmer
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Patent number: 9251740Abstract: Systems and methods are provided for displaying stereoscopic image data on a dual modulation display having a light source modulation layer and a display modulation layer. The light source modulation layer has light sources for providing spatially modulated, spectrally separated light for displaying time-multiplexed left and right eye images. The display modulation layer has pixels for spatially modulating the amount of light received from the light source modulation layer.Type: GrantFiled: October 20, 2010Date of Patent: February 2, 2016Assignee: Dolby Laboratories Licensing CorporationInventors: Brad Basler, Giorgio Giaretta
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Publication number: 20140253609Abstract: Methods and apparatus are provided for backlighting a dual modulation display device. Each type of light source comprises a multi-primary light source having two or more primary color light emitters having different primary color characteristics from corresponding primary color emitters of other types of light source. Methods may comprise receiving illumination target values for a plurality of locations on the front modulator corresponding to the plurality of light sources, each of the locations on the front modulator configured to be illuminated by two or more of the plurality of light sources, determining primary color drive values source based on the primary color characteristics for that primary color and the illumination target value for the location corresponding to that light source, and driving the primary color light emitters or each type of light source based on the primary color drive values.Type: ApplicationFiled: October 12, 2012Publication date: September 11, 2014Applicant: DOLBY LABORATORIES LICENSING CORPORATIONInventors: Chun Chi Thomas Wan, Giorgio Giaretta, Lewis Johnson, Ka Wing Terence Lau, Christopher Orlick, Neil Messmer
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Publication number: 20140049734Abstract: A display including an image-generating panel and at least one contrast-enhancing panel, a cross BEF collimator between a backlight and one of the panels, and a polarization-preserving diffuser (e.g., holographic diffuser) between the panels. Typically, the contrast panel is upstream of the image panel, and a reflective polarizer is positioned between the cross BEF or and contrast panel, with the reflective polarizer oriented relative to an initial polarizer of the contrast panel. Polarization of light transmitted by the reflective polarizer matches that transmitted by the initial polarizer. Collimated light propagating from the cross BEF collimator toward the contrast-enhancing panel is given a polarization bias by the reflective polarizer, which reflects incorrectly polarized light back toward the cross BEF collimator.Type: ApplicationFiled: April 25, 2012Publication date: February 20, 2014Applicant: DOLBY LABORATORIES LICENSING CORPORATIONInventors: Gopal Erinjippurath, John Gilbert, Giorgio Giaretta, Vincent Kwong
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Publication number: 20120212487Abstract: Systems and methods are provided for displaying stereoscopic image data on a dual modulation display having a light source modulation layer and a display modulation layer. The light source modulation layer has light sources for providing spatially modulated, spectrally separated light for displaying time-multiplexed left and right eye images. The display modulation layer has pixels for spatially modulating the amount of light received from the light source modulation layer.Type: ApplicationFiled: October 20, 2010Publication date: August 23, 2012Applicant: DOLBY LABORATORIES LICENSING CORPORATIONInventors: Brad Basler, Giorgio Giaretta
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Patent number: 8213480Abstract: An extended cavity surface emitting laser has a first laser die with a first cavity and a first gain element and a second laser die with a second cavity and a second gain element. The first and second gain elements are in series to provide optical gain and optical feedback in an extended optical cavity configuration. The first and second gain elements provide optical gain and optical feedback in a common extended cavity with the first and second gain elements operating serially as a common extended cavity optical mode.Type: GrantFiled: December 16, 2011Date of Patent: July 3, 2012Inventors: Giorgio Giaretta, Arvydas Umbrasas, Michael Jansen
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Publication number: 20120093180Abstract: An extended cavity surface emitting laser has a first laser die with a first cavity and a first gain element and a second laser die with a second cavity and a second gain element. The first and second gain elements are in series to provide optical gain and optical feedback in an extended optical cavity configuration. The first and second gain elements provide optical gain and optical feedback in a common extended cavity with the first and second gain elements operating serially as a common extended cavity optical mode.Type: ApplicationFiled: December 16, 2011Publication date: April 19, 2012Inventors: Giorgio Giaretta, Arvydas Umbrasas, Michael Jansen