Patents by Inventor Chil-sung CHOI
Chil-sung CHOI 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: 9753432Abstract: An optical head for a hologram optical apparatus and a method of operating the same are provided. The optical head for the hologram optical apparatus includes a reference light unit for guiding reference light, a signal light unit for guiding signal light, and a light source unit for providing 1 the reference light and the signal light to the reference light unit and the signal light unit, wherein the reference light unit and the signal light unit are stacked. The signal light unit includes: a plurality of optical waveguides stacked sequentially; composite hologram optical elements and lighting hologram optical elements disposed on the plurality of optical waveguides; an optical modulator for modulating light output from the plurality of the optical waveguides; and a lens for condensing light output from the optical modulator onto a recording layer.Type: GrantFiled: November 14, 2013Date of Patent: September 5, 2017Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Kyoung-seok Pyun, Chil-sung Choi, Alexander Morozov, Jung-kwuen An, Sun-il Kim, Ivan Bovsunovskiy, Andrew Putilin
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Patent number: 9651918Abstract: Provided is a holographic recording method in which an interference fringe between a reference beam and a signal beam, modulated according to information regarding a plurality of hologram pixels, is recorded on a holographic recording medium, the holographic recording method including multiplexing-recording the interference fringe of the plurality of hologram pixels such that at least a part of the interference fringe recorded of neighboring hologram pixels of the plurality of hologram pixels is overlapped.Type: GrantFiled: September 19, 2013Date of Patent: May 16, 2017Assignees: SAMSUNG ELECTRONICS CO., LTD., SEOUL NATIONAL UNIVERSITY R&DB FOUNDATIONInventors: Kyoung-seok Pyun, Byoung-ho Lee, Sun-il Kim, Chil-sung Choi, Soon-gi Park, Jung-kwuen An, Kee-hoon Hong, Ji-woon Yeom, Jong-hyun Kim
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Patent number: 9436060Abstract: Provided are an islands-in-sea type photorefractive polymer composite, and a photorefractive device and an optical device including the same. The islands-in-sea type photorefractive polymer composite includes at least a photoconductive polymer matrix, a nonlinear optical chromophore, and a plasticizer, as a sea component, and includes at least a photocharge generator as an island component.Type: GrantFiled: August 27, 2013Date of Patent: September 6, 2016Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Chil-sung Choi, Kyoung-seok Pyun
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Patent number: 9367036Abstract: A hologram recording apparatus is provided, including: a coherent light source; a beam splitter which splits a beam emitted from the coherent light source into a signal beam and a reference beam; a signal beam forming unit including a first optical element which splits the signal beam into a plurality of sub signal beams and deflects the plurality of sub signal beams in different directions. The signal beam forming unit further directs the plurality of sub signal beams onto a hologram recording medium. The recording apparatus also includes a reference beam forming unit which directs the reference onto a location on the hologram recording medium which overlaps with locations on the hologram recording medium on which the plurality of sub signal beams are incident.Type: GrantFiled: March 15, 2013Date of Patent: June 14, 2016Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Kyoung-seok Pyun, Andrew Putilin, Alexander Morozov, Ivan Bovsunovskiy, Chil-sung Choi
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Patent number: 9291997Abstract: A high speed hologram recording apparatus and method. The hologram recording apparatus includes: a light source for emitting coherent light; a beam splitter for splitting the coherent light emitted from the light source into a signal beam and a reference beam; a signal beam transfer unit comprising an angular deflector that changes a direction of the signal beam according to time, and irradiating the signal beam onto a hologram recording medium; and a reference beam transfer unit irradiating the reference beam at a location of the hologram recording medium where the signal beam is also irradiated.Type: GrantFiled: March 18, 2013Date of Patent: March 22, 2016Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Kyoung-seok Pyun, Alexander Morozov, Chil-sung Choi, Ivan Bovsunovskiy, Vladislav Druzhin, Andrew Putilin
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Patent number: 9164382Abstract: A photorefractive composite, a spatial light modulator and a hologram display device using the same include at least one carborane compound expressed as the following Chemical Formulae 1A through 1C: wherein the photorefractive composite exhibits photoconductivity and optical nonlinearity.Type: GrantFiled: November 16, 2012Date of Patent: October 20, 2015Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Kyu-young Hwang, Gae-hwang Lee, Jae-eun Jung, Chil-sung Choi
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Patent number: 9134550Abstract: Provided are a photorefractive polymer composite, and a photorefractive devices and hologram display device including the same. The photorefractive polymer composite includes a photoconductive polymer matrix, a nonlinear optical chromophore, a plasticizer, and a graphite-based photocharge generator.Type: GrantFiled: August 20, 2013Date of Patent: September 15, 2015Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Chil-sung Choi, Kyoung-seok Pyun
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Patent number: 9128460Abstract: A photopolymer composition includes a polymer binder; a monomer for holographic recording; a photoinitiation system including an electron acceptor, at least one of an electron donor and a hydrogen atom donor, and a dye-sensitizer; and a solvent. The monomer for holographic recording includes N-acryloylthiomorpholine.Type: GrantFiled: November 8, 2013Date of Patent: September 8, 2015Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Chil-sung Choi, Kyoung-seok Pyun, Alexander Morozov, Sang-yoon Oh, Evgeny V. Vasiljev, Vladimir V. Shelkovnikov
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Patent number: 9097970Abstract: A photorefractive composite, a spatial light modulator and a hologram display device using the same include at least one carborane compound expressed as the following Chemical Formulae 1A through 1C: wherein the photorefractive composite exhibits photoconductivity and optical nonlinearity.Type: GrantFiled: December 7, 2012Date of Patent: August 4, 2015Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Kyu-young Hwang, Gae-hwang Lee, Jae-eun Jung, Chil-sung Choi
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Publication number: 20140285863Abstract: Provided is a holographic recording method in which an interference fringe between a reference beam and a signal beam, modulated according to information regarding a plurality of hologram pixels, is recorded on a holographic recording medium, the holographic recording method including multiplexing-recording the interference fringe of the plurality of hologram pixels such that at least a part of the interference fringe recorded of neighboring hologram pixels of the plurality of hologram pixels is overlapped.Type: ApplicationFiled: September 19, 2013Publication date: September 25, 2014Applicants: SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION, SAMSUNG ELECTRONICS CO., LTD.Inventors: Kyoung-seok PYUN, Byoung-ho LEE, Sun-il KIM, Chil-sung CHOI, Soon-gi PARK, Jung-kwuen AN, Kee-hoon HONG, Ji-woon YEOM, Jong-hyun KIM
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Publication number: 20140253997Abstract: Provided are an islands-in-sea type photorefractive polymer composite, and a photorefractive device and an optical device including the same. The islands-in-sea type photorefractive polymer composite includes at least a photoconductive polymer matrix, a nonlinear optical chromophore, and a plasticizer, as a sea component, and includes at least a photocharge generator as an island component.Type: ApplicationFiled: August 27, 2013Publication date: September 11, 2014Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Chil-sung CHOI, Kyoung-seok PYUN
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Publication number: 20140132999Abstract: An optical head for a hologram optical apparatus and a method of operating the same are provided. The optical head for the hologram optical apparatus includes a reference light unit for guiding reference light, a signal light unit for guiding signal light, and a light source unit for providing 1 the reference light and the signal light to the reference light unit and the signal light unit, wherein the reference light unit and the signal light unit are stacked. The signal light unit includes: a plurality of optical waveguides stacked sequentially; composite hologram optical elements and lighting hologram optical elements disposed on the plurality of optical waveguides; an optical modulator for modulating light output from the plurality of the optical waveguides; and a lens for condensing light output from the optical modulator onto a recording layer.Type: ApplicationFiled: November 14, 2013Publication date: May 15, 2014Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Kyoung-seok PYUN, Chil-sung CHOI, Alexander MOROZOV, Jung-kwuen AN, Sun-il KIM, Ivan BOVSUNOVSKIY, Andrew PUTILIN
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Publication number: 20140133000Abstract: Provided are a photorefractive polymer composite, and a photorefractive devices and hologram display device including the same. The photorefractive polymer composite includes a photoconductive polymer matrix, a nonlinear optical chromophore, a plasticizer, and a graphite-based photocharge generator.Type: ApplicationFiled: August 20, 2013Publication date: May 15, 2014Inventors: Chil-sung CHOI, Kyoung-seok PYUN
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Publication number: 20140127611Abstract: A photopolymer composition includes a polymer binder; a monomer for holographic recording; a photoinitiation system including an electron acceptor, at least one of an electron donor and a hydrogen atom donor, and a dye-sensitizer; and a solvent. The monomer for holographic recording includes N-acryloylthiomorpholine.Type: ApplicationFiled: November 8, 2013Publication date: May 8, 2014Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Chil-sung CHOI, Kyoung-seok PYUN, Alexander MOROZOV, Sang-yoon OH, Evgeny V. VASILJEV, Vladimir V. SHELKOVNIKOV
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Publication number: 20140055830Abstract: A phase mask includes a phase modulation layer that modulates a phase of different portions of incident light, differently, such that a different optical phase delay, in a range between 0 and 2? is imparted to different portions of the incident light. A hologram recording apparatus includes a light source; a signal beam optical system that divides a beam emitted from the light source into a reference beam and a signal beam, modulates the signal beam according to hologram pixel information, and radiates the signal beam onto a hologram recording medium. The signal beam optical system includes the phase mask. The hologram recording apparatus also includes a reference beam optical system that radiates the reference beam onto the hologram recording medium.Type: ApplicationFiled: August 27, 2013Publication date: February 27, 2014Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Kyoung-seok PYUN, Alexander MOROZOV, Chil-sung CHOI
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Publication number: 20140009809Abstract: A hologram recording apparatus is provided, including: a coherent light source; a beam splitter which splits a beam emitted from the coherent light source into a signal beam and a reference beam; a signal beam forming unit including a first optical element which splits the signal beam into a plurality of sub signal beams and deflects the plurality of sub signal beams in different directions. The signal beam forming unit further directs the plurality of sub signal beams onto a hologram recording medium. The recording apparatus also includes a reference beam forming unit which directs the reference onto a location on the hologram recording medium which overlaps with locations on the hologram recording medium on which the plurality of sub signal beams are incident.Type: ApplicationFiled: March 15, 2013Publication date: January 9, 2014Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Kyoung-seok Pyun, Andrew Putilin, Alexander Morozov, Ivan Bovsunovskiy, Chil-sung Choi
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Patent number: 8605562Abstract: An apparatus and method for recording a micro-hologram are provided. The micro-hologram recording apparatus includes a first light source configured to emit a first light, the first light being coherent, a first optical system configured to divide the first light into a signal beam and a reference beam, and supply the signal beam and the reference beam to a location on a hologram recording medium, a second light source configured to emit a second light, the second light being incoherent and not interfering with the signal beam and the reference beam, and a second optical system configured to supply the second light to the same location as the signal beam and the reference beam on the hologram recording medium.Type: GrantFiled: August 8, 2012Date of Patent: December 10, 2013Assignee: Samsung Electronics Co., Ltd.Inventors: Kyungsuk Pyun, Andrew Putilin, Alexander Morozov, Gee-young Sung, Chil-sung Choi
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Publication number: 20130308170Abstract: A high speed hologram recording apparatus and method. The hologram recording apparatus includes: a light source for emitting coherent light; a beam splitter for splitting the coherent light emitted from the light source into a signal beam and a reference beam; a signal beam transfer unit comprising an angular deflector that changes a direction of the signal beam according to time, and irradiating the signal beam onto a hologram recording medium; and a reference beam transfer unit irradiating the reference beam at a location of the hologram recording medium where the signal beam is also irradiated.Type: ApplicationFiled: March 18, 2013Publication date: November 21, 2013Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Kyoung-seok PYUN, Alexander MOROZOV, Chil-sung CHOI, Ivan BOVSUNOVSKIY, Vladislav DRUZHIN
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Publication number: 20130148180Abstract: A photorefractive composite, a spatial light modulator and a hologram display device using the same include at least one carborane compound expressed as the following Chemical Formulae 1A through 1C: wherein the photorefractive composite exhibits photoconductivity and optical nonlinearity.Type: ApplicationFiled: November 16, 2012Publication date: June 13, 2013Inventors: Kyu-young HWANG, Gae-hwang LEE, Jae-eun JUNG, Chil-sung CHOI
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Publication number: 20130039160Abstract: An apparatus and method for recording a micro-hologram are provided. The micro-hologram recording apparatus includes a first light source configured to emit a first light, the first light being coherent, a first optical system configured to divide the first light into a signal beam and a reference beam, and supply the signal beam and the reference beam to a location on a hologram recording medium, a second light source configured to emit a second light, the second light being incoherent and not interfering with the signal beam and the reference beam, and a second optical system configured to supply the second light to the same location as the signal beam and the reference beam on the hologram recording medium.Type: ApplicationFiled: August 8, 2012Publication date: February 14, 2013Applicant: Samsung Electronics, Co., Ltd.Inventors: Kyungsuk PYUN, Andrew PUTILIN, Alexander MOROZOV, Gee-young SUNG, Chil-sung CHOI