Patents by Inventor Zhuoyun Li
Zhuoyun Li 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: 9435733Abstract: A system for measuring a characteristic of a solar cell is disclosed and includes a light source irradiating an optical signal having a spectral range from about 100 nm to about 3000 nm, a wavelength selector configured to selectively narrow the spectral range of the optical signal, a beam splitter, a reference detector in optical communication with the beam splitter and configured to measure a characteristic of the optical signal, a specimen irradiated with the optical signal, a reflectance detector in optical communication with the specimen via the beam splitter and configured to measure an optical characteristic of the optical signal reflected by the specimen, a multiplexer in communication with at least one of the reference detector, specimen, and reflectance detector, and a processor in communication with at least one of the reference detector, specimen, and reflectance detector via the multiplexer and configured to calculate at least one characteristic of the specimen.Type: GrantFiled: May 20, 2014Date of Patent: September 6, 2016Assignee: NEWPORT CORPORATIONInventors: Razvan Ciocan, John Donohue, Arkady Feldman, Zhuoyun Li
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Patent number: 9370925Abstract: A stencil printer includes an electronic substrate support configured to support an electronic substrate and move the electronic substrate between a lowered position and a raised position. The stencil printer further includes a stencil shuttle assembly configured to support a stencil and to move the stencil between a first position in which the stencil is positioned toward a front of the stencil printer and a second position in which the stencil is positioned toward a back of the stencil printer. The stencil printer further includes a print head configured to engage the stencil to dispense a material onto the substrate during a print stroke. The stencil printer further includes a drive assembly configured to move the print head to perform the print stroke and configured to selectively move the stencil shuttle frame between the first and second positions.Type: GrantFiled: March 25, 2015Date of Patent: June 21, 2016Assignee: Illinois Tool Works Inc.Inventors: William A. Losiewicz, Kenneth King, James Lynch, Zhuoyun Li
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Publication number: 20150090134Abstract: A method of stencil printing small aspect features includes performing a stencil print stroke across a stencil having at least one small aspect opening with a stencil printer having a squeegee blade, and venting an area below the at least one small aspect opening. Another method includes performing a stencil print stroke across a stencil having at least one small aspect opening with a stencil printer having a multi-blade squeegee, and venting an area below the at least one small aspect opening. A stencil printer includes a stencil having apertures formed therein, and a print head positioned over the stencil and configured to deposit viscous material within the apertures of the stencil. The print head includes a support, a first pair of blades secured to the support, and a second pair of blades secured to the support.Type: ApplicationFiled: September 30, 2013Publication date: April 2, 2015Applicant: Illinois Tool Works Inc.Inventors: Zhuoyun Li, Boris Shifrin, John George Klauser, Aditya Ajit Kulkarni
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Publication number: 20140252242Abstract: A system for measuring a characteristic of a solar cell is disclosed and includes a light source irradiating an optical signal having a spectral range from about 100 nm to about 3000 nm, a wavelength selector configured to selectively narrow the spectral range of the optical signal, a beam splitter, a reference detector in optical communication with the beam splitter and configured to measure a characteristic of the optical signal, a specimen irradiated with the optical signal, a reflectance detector in optical communication with the specimen via the beam splitter and configured to measure an optical characteristic of the optical signal reflected by the specimen, a multiplexer in communication with at least one of the reference detector, specimen, and reflectance detector, and a processor in communication with at least one of the reference detector, specimen, and reflectance detector via the multiplexer and configured to calculate at least one characteristic of the specimen.Type: ApplicationFiled: May 20, 2014Publication date: September 11, 2014Applicant: NEWPORT CORPORATIONInventors: Razvan Ciocan, John Donohue, Arkady Feldman, Zhuoyun Li
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Patent number: 8736825Abstract: A system for measuring a characteristic of a solar cell is disclosed and includes a light source irradiating an optical signal having a spectral range from about 100 nm to about 3000 nm, a wavelength selector configured to selectively narrow the spectral range of the optical signal, a beam splitter, a reference detector in optical communication with the beam splitter and configured to measure a characteristic of the optical signal, a specimen irradiated with the optical signal, a reflectance detector in optical communication with the specimen via the beam splitter and configured to measure an optical characteristic of the optical signal reflected by the specimen, a multiplexer in communication with at least one of the reference detector, specimen, and reflectance detector, and a processor in communication with at least one of the reference detector, specimen, and reflectance detector via the multiplexer and configured to calculate at least one characteristic of the specimen.Type: GrantFiled: September 16, 2011Date of Patent: May 27, 2014Assignee: Newport CorporationInventors: Razvan Ciocan, John Donohue, Arkady Feldman, Zhuoyun Li
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Publication number: 20140118987Abstract: The present application is directed to an optical filter system for use in a solar simulator, and includes at least one supplemental filter configured not to transmit light having a wavelength of 295 nm or less and to output at least one conditioned signal at least one WG320 optical filter configured to be irradiated by the conditioned signal and output at least one partially filtered signal having a wavelength of about 300 nm or greater, and at least one UG11 pass filter configured to be irradiated by the partially filtered signal and output at least one output signal having a wavelength of about 300 nm to about 400 nm.Type: ApplicationFiled: June 14, 2012Publication date: May 1, 2014Applicant: Newport CorporationInventor: Zhuoyun Li
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Publication number: 20140021335Abstract: The disclosure relates to a photodetector system including a multi-junction detector having a first junction configured to generate a first current when irradiated with a first optical radiation component within a first spectral range, and at least a second junction configured to generate a second current when irradiated with a second optical radiation component within a second spectral range that is different than the first spectral range. The photodetector system also comprises a microprocessor adapted to generate a first indication related to a first characteristic of the first optical radiation component based on the first current, and generate a second indication related to a second characteristic of the second optical radiation component based on the second current.Type: ApplicationFiled: August 31, 2011Publication date: January 23, 2014Applicant: NEWPORT CORPORATIONInventors: Razvan Ciocan, Domenic Assalone, John Donohue, Dae Han, Zhuoyun Li
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Publication number: 20120010854Abstract: A system for measuring a characteristic of a solar cell is disclosed and includes a light source irradiating an optical signal having a spectral range from about 100 nm to about 3000 nm, a wavelength selector configured to selectively narrow the spectral range of the optical signal, a beam splitter, a reference detector in optical communication with the beam splitter and configured to measure a characteristic of the optical signal, a specimen irradiated with the optical signal, a reflectance detector in optical communication with the specimen via the beam splitter and configured to measure an optical characteristic of the optical signal reflected by the specimen, a multiplexer in communication with at least one of the reference detector, specimen, and reflectance detector, and a processor in communication with at least one of the reference detector, specimen, and reflectance detector via the multiplexer and configured to calculate at least one characteristic of the specimen.Type: ApplicationFiled: September 16, 2011Publication date: January 12, 2012Applicant: NEWPORT CORPORATIONInventors: Razvan Ciocan, John Donohue, Arkady Feldman, Zhuoyun Li
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Patent number: 7327468Abstract: In an opto-acoustic measuring device for thin films and solid surfaces, the probe beam is split into a first probe beam portion and a second reference beam portion. The splitting of the probe beam is achieved using a phase mask that also splits the excitation beam. The probe beam is aligned using a retro-reflector on a motorized stage to control the beam angle. Excitation and probe/reference beams are overlapped at the sample surface. The first probe beam portion gets diffracted by material disturbances generated by excitation beams. The diffracted part of the first probe beam portion is collinear with the second reference beam portion, resulting in heterodyning. The heterodyne signal measured by the detector is analyzed in order to determine thickness and/or other properties of a thin film or solid surface. The invention improves magnitude and reproducibility of the opto-acoustic signal which results in enhanced precision of measurements.Type: GrantFiled: July 26, 2002Date of Patent: February 5, 2008Assignee: Advanced Metrology Systems LLCInventors: Alexei Maznev, Zhuoyun Li, Alexander Mazurenko
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Publication number: 20040174529Abstract: In an opto-acoustic measuring device for thin films and solid surfaces, the probe beam is split into a first probe beam portion and a second reference beam portion. The splitting of the probe beam is achieved using a phase mask that also splits the excitation beam. The probe beam is aligned using a retro-reflector on a motorized stage to control the beam angle. Excitation and probe/reference beams are overlapped at the sample surface. The first probe beam portion gets diffracted by material disturbances generated by excitation beams. The diffracted part of the first probe beam portion is collinear with the second reference beam portion, resulting in heterodyning. The heterodyne signal measured by the detector is analyzed in order to determine thickness and/or other properties of a thin film or solid surface. The invention improves magnitude and reproducibility of the opto-acoustic signal which results in enhanced precision of measurements.Type: ApplicationFiled: January 22, 2004Publication date: September 9, 2004Inventors: Alexei Maznev, Zhuoyun Li, Alexander Mazurenko