Patents by Inventor James Brookhyser
James Brookhyser 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: 20240017350Abstract: A laser-processing apparatus can carry out a process to form a via in a workpiece, having a first material formed on a second material, by directing laser energy onto the workpiece such that the laser energy is incident upon the first material, wherein the laser energy has a wavelength to which the first material is more reflective than the second material. The apparatus can include a back-reflection sensing system operative to capture a back-reflection signal corresponding to a portion of laser energy directed to the workpiece and reflected by the first material and generate a sensor signal based on the captured back-reflection signal; and a controller communicatively coupled to an output of the back-reflection sensing system, wherein the controller is operative to control a remainder of the process by which the via is formed based on the sensor signal.Type: ApplicationFiled: November 23, 2021Publication date: January 18, 2024Applicant: ELECTRO SCIENTIFIC INDUSTRIES, INC.Inventors: Jan KLEINERT, Ruolin CHEN, James BROOKHYSER, Mark UNRATH, Honghua HU
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Publication number: 20230420905Abstract: An apparatus includes an acousto-optical deflector (AOD) system operative to deflect a beam of laser energy within a two-dimensional scan field. The AOD system includes a first AOD operative to deflect the beam of laser energy along a first axis of the two-dimensional scan field; a second AOD arranged optically downstream of the first AOD, wherein the second AOD is operative to deflect the beam of laser energy along a second axis of the two-dimensional scan field; and a controller operatively coupled to the AOD system. The controller is configured to drive each of the first AOD and the second AOD to deflect the beam of laser energy within the two-dimensional scan field and is further configured to drive the first AOD and the second AOD at at least substantially the same diffraction efficiency.Type: ApplicationFiled: November 11, 2021Publication date: December 28, 2023Applicant: ELECTRO SCIENTIFIC INDUSTRIES, INC.Inventors: Brian JOHANSEN, Tyler HOWE, Mehmet ALPAY, James BROOKHYSER, Jered RICHTER
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Publication number: 20230390866Abstract: Numerous embodiments of optical relay systems are disclosed. In one embodiment, a laser-processing apparatus includes an optical relay system configured to correct for beam placement errors by maintaining the optical path length of a beam of laser energy between a first positioner and a scan lens. In another embodiment, the optical relay system may include a first lens, a second lens, and a zoom lens assembly arranged between the first lens and the second lens, wherein the zoom lens assembly includes a first lens group and a second lens group. The zoom lens assembly may be movable relative to the first lens and the second lens (e.g., mounted on a positioner, such as a motion stage). The distance between the lenses of the first lens group and the distance between the lenses of the second lens group may be fixed or variable.Type: ApplicationFiled: November 23, 2021Publication date: December 7, 2023Applicant: ELECTRO SCIENTIFIC INDUSTRIES, INC.Inventors: James BROOKHYSER, Jan KLEINERT, Jered RICHTER, Mark UNRATH
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Publication number: 20230307883Abstract: A beam positioner for deflecting a beam path, along which a diffracted beam of linearly polarized laser light is propagatable, within a two-dimensional scan field, the beam positioner includes a first acousto-optic deflectors (AOD) to deflect the beam path within a first one-dimensional scan field extending along a first axis of the two-dimensional scan field, a second AOD to deflect the beam path within a second one-dimensional scan field extending along a second axis of the two-dimensional scan field, a phase retarder arranged between the first AOD and the second AOD and within the beam path along which the beam of laser light is propagatable from the first AOD and a mirror arranged between the first AOD and the second AOD and within the beam path along which the beam of laser light is propagatable from the first AOD.Type: ApplicationFiled: May 31, 2023Publication date: September 28, 2023Applicant: ELECTRO SCIENTIFIC INDUSTRIES, INC.Inventors: James BROOKHYSER, Jan KLEINERT, Jered RICHTER
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Patent number: 11705686Abstract: A beam positioner can be broadly characterized as including a first acousto-optic (AO) deflector (AOD) operative to diffract an incident beam of linearly polarized laser light, wherein the first AOD has a first diffraction axis and wherein the first AOD is oriented such that the first diffraction axis has a predetermined spatial relationship with the plane of polarization of the linearly polarized laser light. The beam positioner can include at least one phase-shifting reflector arranged within a beam path along which light is propagatable from the first AOD. The at least one phase-shifting reflector can be configured and oriented to rotate the plane of polarization of light diffracted by the first AOD.Type: GrantFiled: September 20, 2018Date of Patent: July 18, 2023Assignee: ELECTRO SCIENTIFIC INDUSTRIES, INC.Inventors: James Brookhyser, Jan Kleinert, Jered Richter, Kurt Eaton
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Patent number: 11281069Abstract: A beam positioner includes a first acousto-optic (AO) deflector (AOD) comprising an AO cell and a transducer attached to the AO cell, and a wave plate optically contacted to the first AOD.Type: GrantFiled: June 19, 2018Date of Patent: March 22, 2022Assignee: Electro Scientific Industries, Inc.Inventors: James Brookhyser, Kurt Eaton
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Publication number: 20220048135Abstract: Numerous embodiments are disclosed. In one, a laser-processing apparatus includes a positioner arranged within a beam path along which a beam of laser energy is propagatable. A controller may be used to control an operation of the positioner to deflect the beam path within first and second primary angular ranges, and to deflect the beam path to a plurality of angles within each of the first and second primary angular ranges. In another, an integrated beam dump system includes a frame; and a pickoff mirror and beam dump coupled to the frame. In still another, a wavefront correction optic includes a mirror having a reflective surface having a shape characterized by a particular ratio of fringe Zernike terms Z4 and Z9. Many more embodiments are disclosed.Type: ApplicationFiled: January 3, 2020Publication date: February 17, 2022Inventors: James Brookhyser, Jan Kleinert, Mark Kosmowski, Timothy Nuckolls, Jered Richter, Fumiyo Yoshino, Steve Meliza, Mehmet Alpay, Yuan Liu, Kurt M. Eaton
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Publication number: 20210376549Abstract: A system includes a multi-channel beam splitter arranged and configured to split an input optical signal into a plurality of split optical signals; a plurality of phase modulators, wherein each phase modulator of the plurality of phase modulators is operative to modify a phase of a corresponding split optical signal of the plurality of split optical signals in response to a control signal; a waveguide arranged at an optical output of the plurality of phase modulators, the waveguide configured to spatially-rearrange the split optical signals output from the plurality of phase modulators into a pattern, thereby producing an optical signal pattern; and an optical amplifier arranged at an optical output of the waveguide, wherein the optical amplifier is configured to amplify the optical signal pattern produced by the waveguide.Type: ApplicationFiled: February 4, 2020Publication date: December 2, 2021Inventors: Jan Kleinert, Justin Redd, James Brookhyser
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Publication number: 20210362277Abstract: Apparatus and techniques for laser-processing workpieces can be improved, and new functionalities can be provided. Some embodiments discussed relate to use of beam characterization tools to facilitate adaptive processing, process control and other desirable features. Other embodiments relate to laser power sensors incorporating integrating spheres. Still other embodiments relate to workpiece handling systems capable of simultaneously providing different workpieces to a common laser-processing apparatus. A great number of other embodiments and arrangements are also detailed.Type: ApplicationFiled: June 4, 2019Publication date: November 25, 2021Inventors: Patrick Riechel, Mark Unrath, Jake Roberts, Joseph Hasty, James Brookhyser, Zachary Dunn, Christopher Hamner, Geoffrey Lott, Jacob Magers, Jack Rundel, Jeffrey Howerton, Jan Kleinert, Doug Hall, Gary Larsen, Julie Wilson, Lee Petersen, Mark Wegner, Kurt Eaton
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Publication number: 20210226406Abstract: A beam positioner can be broadly characterized as including a first acousto-optic (AO) deflector (AOD) operative to diffract an incident beam of linearly polarized laser light, wherein the first AOD has a first diffraction axis and wherein the first AOD is oriented such that the first diffraction axis has a predetermined spatial relationship with the plane of polarization of the linearly polarized laser light. The beam positioner can include at least one phase-shifting reflector arranged within a beam path along which light is propagatable from the first AOD. The at least one phase-shifting reflector can be configured and oriented to rotate the plane of polarization of light diffracted by the first AOD.Type: ApplicationFiled: September 20, 2018Publication date: July 22, 2021Inventors: James Brookhyser, Jan Kleinert, Jered Richter, Kurt Eaton
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Publication number: 20200209707Abstract: A beam positioner includes a first acousto-optic (AO) deflector (AOD) comprising an AO cell and a transducer attached to the AO cell, and a wave plate optically contacted to the first AOD.Type: ApplicationFiled: June 19, 2018Publication date: July 2, 2020Applicant: Electro Scientific Industries, Inc.Inventors: James BROOKHYSER, Kurt EATON
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Patent number: 9610653Abstract: The present invention is a method for separating a workpiece from a common substrate. It includes the steps of providing the workpiece, generating, within a beam source, a beam of laser pulses configured to modify a portion of the workpiece, determining a depth for creating a modified region based upon a characteristic of the workpiece and modifying a plurality of regions within the workpiece to form a plurality of modified regions. Modifying the plurality of regions includes directing the beam of laser pulses from an output of the beam source onto the workpiece, causing relative motion between the workpiece and the output of the beam source while directing the beam of laser pulses onto workpiece, and modifying a characteristic of the pulses of the beam upon generating a number of pulses which generally correspond to creating the modified regions to the determined depth.Type: GrantFiled: September 20, 2013Date of Patent: April 4, 2017Assignee: Electro Scientific Industries, Inc.Inventors: Haibin Zhang, Fang Shan, Mathew Rekow, Min Zhang, Glenn Simenson, Qian Xu, James Brookhyser, Joe Frankel, Michael Darwin, Jack Rundel, Matthew Pysher
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Publication number: 20150209902Abstract: The present invention relates to laser marking articles. In particular it relates to laser marking articles by laser ablating a coating applied to the article which reveals the surface of the article underneath, thereby forming the mark by the contrasting appearance between the revealed surface of the article and the adjacent remaining coating. Laser parameters are selected to provide uniform, commercially desirable appearance and avoid damage to the underlying surface while maintaining acceptable system throughput. In particular the laser pulse envelope is tailored to provide desirable appearance while maintaining acceptable system throughput.Type: ApplicationFiled: April 2, 2015Publication date: July 30, 2015Inventors: James Brookhyser, Kyle Ball
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Patent number: 9023461Abstract: The present invention relates to laser marking articles. In particular it relates to laser marking articles by laser ablating a coating applied to the article which reveals the surface of the article underneath, thereby forming the mark by the contrasting appearance between the revealed surface of the article and the adjacent remaining coating. Laser parameters are selected to provide uniform, commercially desirable appearance and avoid damage to the underlying surface while maintaining acceptable system throughput. In particular the laser pulse envelope is tailored to provide desirable appearance while maintaining acceptable system throughput.Type: GrantFiled: October 21, 2010Date of Patent: May 5, 2015Assignee: Electro Scientific Industries, Inc.Inventors: James Brookhyser, Kyle Ball
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Publication number: 20140083983Abstract: The present invention is a method for separating a workpiece from a common substrate. It includes the steps of providing the workpiece, generating, within a beam source, a beam of laser pulses configured to modify a portion of the workpiece, determining a depth for creating a modified region based upon a characteristic of the workpiece and modifying a plurality of regions within the workpiece to form a plurality of modified regions. Modifying the plurality of regions includes directing the beam of laser pulses from an output of the beam source onto the workpiece, causing relative motion between the workpiece and the output of the beam source while directing the beam of laser pulses onto workpiece, and modifying a characteristic of the pulses of the beam upon generating a number of pulses which generally correspond to creating the modified regions to the determined depth.Type: ApplicationFiled: September 20, 2013Publication date: March 27, 2014Applicant: ELECTRO SCIENTIFIC INDUSTRIES, INC.Inventors: Haibin Zhang, Fang SHAN, Mathew Rekow, Min Zhang, Glenn Simenson, Qian XU, James Brookhyser, Joe Frankel, Michael Darwin, Jack Rundel, Matthew Pysher
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Publication number: 20120100348Abstract: The present invention relates to laser marking articles. In particular it relates to laser marking articles by laser ablating a coating applied to the article which reveals the surface of the article underneath, thereby forming the mark by the contrasting appearance between the revealed surface of the article and the adjacent remaining coating. Laser parameters are selected to provide uniform, commercially desirable appearance and avoid damage to the underlying surface while maintaining acceptable system throughput. In particular the laser pulse envelope is tailored to provide desirable appearance while maintaining acceptable system throughput.Type: ApplicationFiled: October 21, 2010Publication date: April 26, 2012Applicant: Electro Scientific Industries, Inc.Inventors: James Brookhyser, Kyle Ball