Patents by Inventor David M. Tung
David M. Tung 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: 20160178513Abstract: Provided herein is an apparatus, including an optical characterization device; a photon detector array configured to sequentially receive a first set of photons scattered from surface features of an article and a second set of photons scattered from surface features of the article and subsequently processed by the optical characterization device; and a chemical characterization means for chemically characterizing the surface features of the article, wherein the chemical characterization means is configured for processing the first set of photons received by the photon detector array and the second set of photons received by the photon detector array.Type: ApplicationFiled: February 25, 2016Publication date: June 23, 2016Inventors: Joachim Walter Ahner, Samuel Kah Hean Wong, Maissarath Nassirou, Henry Luis Lott, David M. Tung, Florin Zavaliche, Stephen Keith McLaurin
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Publication number: 20160169802Abstract: Provided herein is an apparatus, including a photon emitter configured to emit photons onto a surface of an article, a photon detector array configured to receive photons from surface features of the article; and a processing means configured for processing photon-detector-array signals corresponding to photons scattered from the surface features and photons fluoresced from the surface features, wherein the processing means is further configured for classifying the surface features of the article.Type: ApplicationFiled: February 18, 2016Publication date: June 16, 2016Inventors: Joachim Walter Ahner, David M. Tung, Samuel Kah Hean Wong, Henry Luis Lott, Stephen Keith McLaurin, Maissarath Nassirou, Florin Zavaliche
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Publication number: 20160139060Abstract: Provided herein is an apparatus, including a mapping means for generating a map of locations of surface features of an article based on photon-detector signals corresponding to photons scattered from the surface features of the article, and a surface feature manager. The surface manager is configured to locate a predetermined surface feature of the surface features of the article based, at least in part, on the map of the surface features locations, irradiate photons of a first power onto the location of the predetermined surface feature to analyze the predetermined surface feature, and irradiate photons of a second power onto the location of the predetermined surface feature to remove the predetermined surface feature.Type: ApplicationFiled: January 22, 2016Publication date: May 19, 2016Inventors: Joachim Walter Ahner, David M. Tung
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Patent number: 9297759Abstract: Provided herein is an apparatus, including a photon emitter configured to emit photons onto a surface of an article, a photon detector array configured to receive photons from surface features of the article; and a processing means configured for processing photon-detector-array signals corresponding to photons scattered from the surface features and photons fluoresced from the surface features, wherein the processing means is further configured for classifying the surface features of the article.Type: GrantFiled: September 19, 2013Date of Patent: March 29, 2016Assignee: Seagate Technology LLCInventors: Joachim Walter Ahner, David M. Tung, Samuel Kah Hean Wong, Henry Luis Lott, Stephen Keith McLaurin, Maissarath Nassirou, Florin Zavaliche
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Patent number: 9297751Abstract: Provided herein is an apparatus, including an optical characterization device; a photon detector array configured to sequentially receive a first set of photons scattered from surface features of an article and a second set of photons scattered from surface features of the article and subsequently processed by the optical characterization device; and a chemical characterization means for chemically characterizing the surface features of the article, wherein the chemical characterization means is configured for processing the first set of photons received by the photon detector array and the second set of photons received by the photon detector array.Type: GrantFiled: September 19, 2013Date of Patent: March 29, 2016Assignee: Seagate Technology LLCInventors: Joachim Walter Ahner, Samuel Kah Hean Wong, Maissarath Nassirou, Henry Luis Lott, David M. Tung, Florin Zavaliche, Stephen Keith McLaurin
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Publication number: 20160077009Abstract: Provided herein is an apparatus, including an excitation arm including excitation optics; a collection arm including collection optics, wherein the excitation arm and the collection arm are geometrically off-axis from one another for independent control of the excitation optics or the collection optics; and a full-surface spectroscopic analyzer to analyze a thin-film over an article from Raman-scattered light collected by the collection optics.Type: ApplicationFiled: August 24, 2015Publication date: March 17, 2016Inventors: Daniel J. Gargas, David M. Tung, Travis W. Grodt, Joachim W. Ahner
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Publication number: 20160069799Abstract: Provided herein is an apparatus including a photon emitter configured for reflecting photons from a surface of an article onto a first reflective surface. In addition, a second reflective surface is configured for reflecting photons from the surface of the article back onto the surface of the article. The apparatus also includes a detector configured to provide information corresponding to photons scattered from features of the article.Type: ApplicationFiled: November 6, 2015Publication date: March 10, 2016Inventors: Joachim W. Ahner, David M. Tung, Stephen Keith McLaurin, Travis W. Grodt
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Publication number: 20160069815Abstract: Provided herein is an apparatus including a photon emitter configured to emit photons onto a surface of an article. In addition, the apparatus includes a photon detector array configured to receive photons scattered from surface features and magnetic features of the article. The photon detector array is configured to provide information for mapping the magnetic features.Type: ApplicationFiled: November 6, 2015Publication date: March 10, 2016Inventors: Joachim Walter Ahner, David M. Tung, Stephen Keith McLaurin
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Publication number: 20160069814Abstract: Provided herein is an apparatus, including a photon emitter and a photon detector array. The photon emitter is configured to emit photons onto an entire surface edge of an article. The photon detector array is configured to receive scattered photons from the entire surface edge of the article, and includes a number of photon detectors. The scattered photons are photons emitted from the photon emitter that are scattered from features of the surface edge of the article.Type: ApplicationFiled: October 29, 2015Publication date: March 10, 2016Inventors: David M. Tung, Joachim W. Ahner
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Patent number: 9274064Abstract: Provided herein is an apparatus, including a mapping means for generating a map of locations of surface features of an article based on photon-detector signals corresponding to photons scattered from the surface features of the article, and a surface feature manager. The surface manager is configured to locate a predetermined surface feature of the surface features of the article based, at least in part, on the map of the surface features locations, irradiate photons of a first power onto the location of the predetermined surface feature to analyze the predetermined surface feature, and irradiate photons of a second power onto the location of the predetermined surface feature to remove the predetermined surface feature.Type: GrantFiled: February 28, 2014Date of Patent: March 1, 2016Assignee: Seagate Technology LLCInventors: Joachim Walter Ahner, David M. Tung
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Patent number: 9217715Abstract: Provided herein are apparatuses and methods related thereto, wherein at least one apparatus includes: a photon emitting means configured to emit photons, wherein the photons are scattered from magnetic features of an article; a photon detector array configured to receive scattered photons; and a processing means configured to differentiate the magnetic features from the scattered photons.Type: GrantFiled: February 28, 2014Date of Patent: December 22, 2015Assignee: Seagate Technology LLCInventors: Joachim Walter Ahner, David M. Tung, Stephen Keith McLaurin
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Patent number: 9217714Abstract: Provided herein is an apparatus, including a photon emitter configured for emitting photons onto a surface of an article; a first reflective surface and a second reflective surface configured to reflect the photons onto the surface of the article; and a processing means configured for processing signals from a photon detector array corresponding to photons scattered from surface features of the article.Type: GrantFiled: September 17, 2013Date of Patent: December 22, 2015Assignee: Seagate Technology LLCInventors: Joachim W. Ahner, David M. Tung, Stephen Keith McLaurin, Travis W. Grodt
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Patent number: 9201019Abstract: Provided herein is an apparatus, including a photon emitting means for emitting photons onto surface edges of an article, a photon detecting means for detecting photons scattered from particles on the surface edges of the article, and a mapping means for mapping a particle or a defect of the surface of the article.Type: GrantFiled: December 3, 2013Date of Patent: December 1, 2015Assignee: Seagate Technology LLCInventors: David M. Tung, Joachim W. Ahner
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Publication number: 20150285743Abstract: Provided herein is an apparatus including an imaging lens assembly configured to collect reflected light from a surface of an article; an image sensor configured to receive reflected light from the imaging lens assembly, wherein the imaging lens assembly and the image sensor are each arranged at different angles for focusing on substantially an entire surface of an article; and a processing means configured to process signals from the image sensor corresponding to polarized reflected light and subsequently generate one or more features maps.Type: ApplicationFiled: May 16, 2014Publication date: October 8, 2015Applicant: SEAGATE TECHNOLOGY LLCInventors: David M. Tung, Joachim Walter Ahner
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Publication number: 20140354994Abstract: Provided herein is an apparatus, including at least two photon emitters, each with a preselected polarization orientation, and configured to emit polarized photons onto a surface of an article, and a processing means configured to process photon-detector-array signals corresponding to photons scattered from surface features of the article, and generate one or more surface features maps for the article from the photon-detector-array signals corresponding to the photons scattered from the surface features of the article.Type: ApplicationFiled: February 28, 2014Publication date: December 4, 2014Applicant: SEAGATE TECHNOLOGY LLCInventors: Joachim Walter Ahner, David M. Tung
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Publication number: 20140354982Abstract: Provided herein are apparatuses and methods related thereto, wherein at least one apparatus includes: a photon emitting means configured to emit photons, wherein the photons are scattered from magnetic features of an article; a photon detector array configured to receive scattered photons; and a processing means configured to differentiate the magnetic features from the scattered photons.Type: ApplicationFiled: February 28, 2014Publication date: December 4, 2014Applicant: SEAGATE TECHNOLOGY LLCInventors: Joachim Walter Ahner, David M. Tung, Stephen Keith McLaurin
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Publication number: 20140354981Abstract: Provided herein is an apparatus, including a mapping means for generating a map of locations of surface features of an article based on photon-detector signals corresponding to photons scattered from the surface features of the article, and a surface feature manager. The surface manager is configured to locate a predetermined surface feature of the surface features of the article based, at least in part, on the map of the surface features locations, irradiate photons of a first power onto the location of the predetermined surface feature to analyze the predetermined surface feature, and irradiate photons of a second power onto the location of the predetermined surface feature to remove the predetermined surface feature.Type: ApplicationFiled: February 28, 2014Publication date: December 4, 2014Applicant: SEAGATE TECHNOLOGY LLCInventors: Joachim Walter Ahner, David M. Tung
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Publication number: 20140354984Abstract: Provided herein is an apparatus, including a photon emitting means configured to emit photons onto a surface of an article at a number of azimuthal angles; and a processing means configured to process photon-detector-array signals corresponding to photons scattered from surface features of the article and generate one or more surface features maps for the article from the photon-detector-array signals corresponding to the photons scattered from the surface features of the article.Type: ApplicationFiled: December 3, 2013Publication date: December 4, 2014Applicant: Seagate Technology LLCInventors: David M. Tung, Joachim W. Ahner
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Publication number: 20140354980Abstract: Provided herein is an apparatus, including a photon emitting means for emitting photons onto surface edges of an article, a photon detecting means for detecting photons scattered from particles on the surface edges of the article, and a mapping means for mapping a particle or a defect of the surface of the article.Type: ApplicationFiled: December 3, 2013Publication date: December 4, 2014Applicant: Seagate Technology LLCInventors: David M. Tung, Joachim W. Ahner
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Publication number: 20140160481Abstract: Provided herein is an apparatus, including a photon emitter configured for emitting photons onto a surface of an article; a first reflective surface and a second reflective surface configured to reflect the photons onto the surface of the article; and a processing means configured for processing signals from a photon detector array corresponding to photons scattered from surface features of the article.Type: ApplicationFiled: September 17, 2013Publication date: June 12, 2014Applicant: Seagate Technology LLCInventors: Joachim W. Ahner, David M. Tung, Stephen Keith McLaurin, Travis W. Grodt