Patents by Inventor Barrie P. Keyworth
Barrie P. Keyworth 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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Patent number: 11906666Abstract: An optical device may include a lens system. The optical device may include a first scanning component to receive an optical beam and to scan the lens system with the optical beam. The optical device may include a second scanning component to receive the optical beam from the lens system and to scan a field of view with the optical beam, where the lens system is positioned between the first scanning component and the second scanning component. The lens system may include a beam expander.Type: GrantFiled: November 14, 2022Date of Patent: February 20, 2024Assignee: Lumentum Operations LLCInventors: Jiamin Zheng, Barrie P. Keyworth, Wenlin Jin
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Publication number: 20230258774Abstract: In some implementations, an optical system includes an emitter array including a plurality of emitters. The plurality of emitters are arranged in a plurality of channels and the emitter array is configured to illuminate on a per-channel basis. Respective positions of emitters, of the plurality of emitters, of a channel, of the plurality of channels, vary across a width of the channel. The optical system includes a lens to receive light from the emitter array and a diffuser to receive light from the lens. The diffuser is configured to diffuse light along a length of the plurality of channels of the emitter array. The optical system includes a corrective optical element to receive light from the diffuser.Type: ApplicationFiled: May 10, 2022Publication date: August 17, 2023Inventors: Barrie P. KEYWORTH, Eric R. HEGBLOM, John Michael MILLER
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Publication number: 20230146243Abstract: An optical device may include a lens system. The optical device may include a first scanning component to receive an optical beam and to scan the lens system with the optical beam. The optical device may include a second scanning component to receive the optical beam from the lens system and to scan a field of view with the optical beam, where the lens system is positioned between the first scanning component and the second scanning component. The lens system may include a beam expander.Type: ApplicationFiled: November 14, 2022Publication date: May 11, 2023Inventors: Jiamin ZHENG, Barrie P. KEYWORTH, Wenlin JIN
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Patent number: 11500070Abstract: An optical device may include a lens system. The optical device may include a first scanning component to receive an optical beam and to scan the lens system with the optical beam. The optical device may include a second scanning component to receive the optical beam from the lens system and to scan a field of view with the optical beam, where the lens system is positioned between the first scanning component and the second scanning component. The lens system may include a beam expander.Type: GrantFiled: December 23, 2019Date of Patent: November 15, 2022Assignee: Lumentum Operations LLCInventors: Jiamin Zheng, Barrie P. Keyworth, Wenlin Jin
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Patent number: 11486980Abstract: A light detection and ranging (lidar) receiver may include a first frequency filter to pass a first range of frequencies of an analog signal. The lidar receiver may include a second frequency filter to pass a second range of frequencies of the analog signal that is different from the first range of frequencies of the analog signal. The lidar receiver may include a first analog-to-digital converter (ADC) to derive a first digital signal based on the first range of frequencies of the analog signal using a first sampling rate. The lidar receiver may include a second ADC to derive a second digital signal based on the second range of frequencies of the analog signal using a second sampling rate that is different from the first sampling rate.Type: GrantFiled: November 4, 2019Date of Patent: November 1, 2022Assignee: Lumentum Operations LLCInventors: Srikanth Ramakrishnan, Barrie P. Keyworth
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Publication number: 20210063542Abstract: An optical device may include a lens system. The optical device may include a first scanning component to receive an optical beam and to scan the lens system with the optical beam. The optical device may include a second scanning component to receive the optical beam from the lens system and to scan a field of view with the optical beam, where the lens system is positioned between the first scanning component and the second scanning component. The lens system may include a beam expander.Type: ApplicationFiled: December 23, 2019Publication date: March 4, 2021Inventors: Jiamin ZHENG, Barrie P. KEYWORTH, Wenlin JIN
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Publication number: 20210063541Abstract: An optical device may include a laser component to emit a source beam and an optical component to split the source beam to generate a first beam and a second beam. The optical device may include a multiplexing component to multiplex the first beam and the second beam to form a first multiplexed beam, an optical system to receive the first multiplexed beam and demultiplex the first beam and the second beam, and a scanning component to scan a field of view with the first beam and the second beam and receive the first beam and the second beam reflected from the field of view. The optical system may multiplex the first beam and the second beam reflected from the field of view to form a second multiplexed beam, and a demultiplexing component may demultiplex the first beam and the second beam reflected from the field of view.Type: ApplicationFiled: November 15, 2019Publication date: March 4, 2021Inventors: Jiamin ZHENG, Barrie P. KEYWORTH, Josh P. KEMP, Michael C. LARSON, Paul COLBOURNE
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Publication number: 20210063776Abstract: An optical device may comprise a laser configured to generate an optical beam and a Mach-Zehnder Interferometer (MZI) configured to amplify the optical beam. The MZI may comprise a first coupler and a second coupler connected via a plurality of arms of the MZI. An arm, of the plurality of arms, may provide an optical path for part of the optical beam and may comprise a semiconductor optical amplifier (SOA) configured to amplify the part of the optical beam and a phase shifter configured to adjust a phase of the part of the optical beam.Type: ApplicationFiled: February 13, 2020Publication date: March 4, 2021Inventors: Michael C. LARSON, Shibnath PATHAK, Barrie P. KEYWORTH
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Publication number: 20210063550Abstract: A light detection and ranging (lidar) receiver may include a first frequency filter to pass a first range of frequencies of an analog signal. The lidar receiver may include a second frequency filter to pass a second range of frequencies of the analog signal that is different from the first range of frequencies of the analog signal. The lidar receiver may include a first analog-to-digital converter (ADC) to derive a first digital signal based on the first range of frequencies of the analog signal using a first sampling rate. The lidar receiver may include a second ADC to derive a second digital signal based on the second range of frequencies of the analog signal using a second sampling rate that is different from the first sampling rate.Type: ApplicationFiled: November 4, 2019Publication date: March 4, 2021Inventors: Srikanth RAMAKRISHNAN, Barrie P. KEYWORTH
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Patent number: 10923875Abstract: An optical device may include a package having a first port for receiving signal light, a source for providing pump light, a combiner for combining the signal light and the pump light into combined light, a second port for sending the combined light, a third port for receiving amplified light, and a free-space optical system for filtering amplified signal light from the amplified light, and a fourth port for sending the amplified signal light. The free-space optical system may include beam shaping optics that enlarge a beam size of the amplified light prior to the filtering.Type: GrantFiled: February 6, 2018Date of Patent: February 16, 2021Assignee: Lumentum Operations LLCInventors: Jiamin Zheng, Barrie P. Keyworth, Paul Colbourne, Dhanorm Plumwongrot, Gareth Jones, Sheldon McLaughlin
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Publication number: 20190245316Abstract: An optical device may include a package having a first port for receiving signal light, a source for providing pump light, a combiner for combining the signal light and the pump light into combined light, a second port for sending the combined light, a third port for receiving amplified light, and a free-space optical system for filtering amplified signal light from the amplified light, and a fourth port for sending the amplified signal light. The free-space optical system may include beam shaping optics that enlarge a beam size of the amplified light prior to the filtering.Type: ApplicationFiled: February 6, 2018Publication date: August 8, 2019Inventors: Jiamin ZHENG, Barrie P. KEYWORTH, Paul COLBOURNE, Dhanorm PLUMWONGROT, Gareth Jones, Sheldon MCLAUGHLIN
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Patent number: 9913008Abstract: A wavelength selective switch (WSS) may include a first port array including input ports, each to launch a respective beam of light, and a dispersive element to separate, in a lateral direction, a beam of light, launched by one of the input ports, into dispersed wavelength channel sub-beams. The WSS may include a switching array to direct the dispersed wavelength channel sub-beams, at respective angles in a vertical direction. The dispersive element may converge groups of dispersed wavelength channel sub-beams in the lateral direction to form wavelength channel sub-beams. The WSS may include a splitting element to split, in the lateral direction, a wavelength channel sub-beam, of the wavelength channel sub-beams, into split wavelength channel sub-beams. The WSS may include switching elements to direct the split wavelength channel sub-beams at respective angles in the vertical direction, and output ports associated with the switching elements.Type: GrantFiled: June 6, 2017Date of Patent: March 6, 2018Assignee: Lumentum Operations LLCInventors: Barrie P. Keyworth, Paul Colbourne
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Patent number: 5534101Abstract: A method of forming an optical element on the surface of a substrate by ejecting a curable light guide forming liquid from a nozzle onto the substrate and curing the curable light guide forming liquid. A waveguide may be formed by moving the nozzle in a linear pattern over the surface of the substrate during ejection of the liquid from the nozzle. Curing the liquid may include exposing the liquid to ultraviolet radiation, and the radiation may be applied to only a small portion of the liquid. A multilayered waveguide may be formed by ejecting a further light guide forming liquid onto the first and curing it. A core and cladding may be formed simultaneously by ejecting core forming liquid from an inner tube and cladding forming liquid from an annulus about the inner tube. The waveguide may be formed in a groove, and a splitter may be formed by branching a second waveguide from a first, or by laying out two parallel waveguides and connecting them.Type: GrantFiled: March 2, 1994Date of Patent: July 9, 1996Assignee: Telecommunication Research LaboratoriesInventors: Barrie P. Keyworth, James N. McMullin