Patents by Inventor Nam-Hun Kim
Nam-Hun Kim 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: 11506915Abstract: A light modulation device is disclosed herein. In some embodiments, a light modulation device includes a first polymer film substrate, a second polymer film substrate, an active liquid crystal layer disposed between the first and second polymer film substrates, wherein the active liquid crystal layer is capable of switching between a first orientation state and a second orientation state different from the first orientation state under an applied voltage, the first and second polymer film substrates have an in-plane retardation of 4,000 nm or more for light having a wavelength of 550 nm, a ratio of an elongation (E1) in a first direction to an elongation (E2) in a second direction perpendicular to the first direction of 3 or more, and wherein an angle formed by the first directions of the first and second polymer film substrates is in a range of 0 degrees to 10 degrees.Type: GrantFiled: April 30, 2018Date of Patent: November 22, 2022Inventors: Min Jun Gim, Dong Hyun Oh, Jung Sun You, Eun Jung Lim, Jin Hong Kim, Hyun Jun Lee, Nam Hun Kim
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Patent number: 11448934Abstract: An optical device is provided in the present application. The present application provides an optical device capable of varying transmittance, and such optical device can be used for various applications, such as eyewear, for example, sunglasses or AR (augmented reality) or VR (virtual reality) eyewear, an outer wall of a building or a sunroof for a vehicle.Type: GrantFiled: March 27, 2019Date of Patent: September 20, 2022Inventors: Nam Hun Kim, Seong Min Lee, Byoung Kun Jeon, Su Young Ryu, Jung Woon Kim, Young Shin Lee
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Patent number: 11435615Abstract: An optical device that can be used for various applications including eyewears, such as sunglasses or AR (augmented reality) or VR (virtual reality) eyewear, an outer wall of a building or a sunroof for a vehicle, and the like is provided. The optical device includes first and second outer substrates disposed to face each other, an active liquid crystal film layer, and a step forming layer. The active liquid crystal film layer and the step forming layer are encapsulated by an encapsulating agent between the first and second outer substrate. The active liquid crystal film layer comprises a first region that is pressed by the step forming layer and a second region that is not pressed by the step forming layer. The defects caused by an excessively large or small amount of light-modulating material or heat shrinkage of the light-modulating material, and the like are prevented in the optical device.Type: GrantFiled: March 26, 2020Date of Patent: September 6, 2022Inventors: Seong Min Lee, Byoung Kun Jeon, Nam Hun Kim, Jung Woon Kim, Young Shin Lee
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Patent number: 11429005Abstract: An optical device is provided in the present application. The optical device of the present application has varying transmittance and improved appearance defects, such as reduction of wrinkles that may occur by lamination of a liquid crystal element and an outer substrate. Such optical device can be used for various applications such as eyewear, for example, sunglasses or AR (augmented reality) or VR (virtual reality) eyewear, an outer wall of a building or a sunroof for a vehicle.Type: GrantFiled: July 18, 2019Date of Patent: August 30, 2022Inventors: Nam Hun Kim, Byoung Kun Jeon, Doo Young Huh, Su Young Ryu, Seong Min Lee, Jung Woon Kim, Young Shin Lee
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Patent number: 11428968Abstract: An optical device and a use thereof are provided. The optical device is capable of suppressing external bubble inflow by eliminating negative pressures that can occur due to shape deformation of a base material in an environment changing between a high temperature and a low temperature and generating a positive pressure. Such optical device can be used as various transmittance-variable devices.Type: GrantFiled: April 24, 2019Date of Patent: August 30, 2022Inventors: Nam Hun Kim, Jung Woon Kim, In Ju Mun, Su Young Ryu, Byoung Kun Jeon
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Patent number: 11372290Abstract: An optical device includes a first outer substrate; a second outer substrate disposed opposite to the first outer substrate; and an active liquid crystal film or a polarizer, wherein the active liquid crystal film or the polarizer is encapsulated by an encapsulating agent between the first and second outer substrates and wherein a shrinkable film adjacent to any one of the first and second outer substrates is further included. The optical device is capable of varying transmittance. The optical device can be used for various applications such as an eyewear, for example, sunglasses or AR (augmented reality) or VR (virtual reality) eyewears, an outer wall of a building or a sunroof for a vehicle.Type: GrantFiled: September 3, 2019Date of Patent: June 28, 2022Inventors: Jung Woon Kim, Byoung Kun Jeon, Beom Jin Lee, In Ju Mun, Su Young Ryu, Seong Min Lee, Young Shin Lee, Nam Hun Kim
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Patent number: 11347080Abstract: The present application relates to a light modulating device and an eyewear. The present application can provide a light modulation device having both excellent mechanical properties and optical properties by applying a polymer film that is also optically anisotropic and mechanically anisotropic to a substrate.Type: GrantFiled: April 30, 2018Date of Patent: May 31, 2022Inventors: Eun Jung Lim, Nam Hun Kim, Jung Sun You, Jin Hong Kim, Hyun Jun Lee, Min Jun Gim, Kyung Ki Hong, In Ju Mun, Dong Hyun Oh
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Publication number: 20220146878Abstract: An optical device that can be used for various applications including eyewears, such as sunglasses or AR (augmented reality) or VR (virtual reality) eyewear, an outer wall of a building or a sunroof for a vehicle, and the like is provided. The optical device includes first and second outer substrates disposed to face each other, an active liquid crystal film layer, and a step forming layer. The active liquid crystal film layer and the step forming layer are encapsulated by an encapsulating agent between the first and second outer substrate. The active liquid crystal film layer comprises a first region that is pressed by the step forming layer and a second region that is not pressed by the step forming layer. The defects caused by an excessively large or small amount of light-modulating material or heat shrinkage of the light-modulating material, and the like are prevented in the optical device.Type: ApplicationFiled: March 26, 2020Publication date: May 12, 2022Applicant: LG Chem, Ltd.Inventors: Seong Min Lee, Byoung Kun Jeon, Nam Hun Kim, Jung Woon Kim, Young Shin Lee
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Patent number: 11314106Abstract: A light modulation device is disclosed herein. In some embodiments, a light modulation device includes a first polymer film substrate, a second polymer film substrate, an active liquid crystal layer disposed between the first and second polymer film substrates, wherein the active liquid crystal layer is capable of switching between a first orientation state and a second orientation state when a voltage is applied, and a polarizer, wherein each of the first and second polymer film substrates have in-plane retardation of 4,000 nm or more for light having a wavelength of 550 nm, a ratio of an elongation (E1) in a first direction to an elongation (E2) in a second direction perpendicular to the first direction of 3 or more, and wherein an angle formed by the first directions of the first and second polymer film substrates is in a range of 0 degrees to 10 degrees.Type: GrantFiled: April 30, 2018Date of Patent: April 26, 2022Inventors: Min Jun Gim, Eun Jung Lim, Jung Sun You, Dong Hyun Oh, Hyun Jun Lee, Nam Hun Kim
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Patent number: 11274713Abstract: A mean rate decision method for a clutch motor is disclosed. The method includes determining whether the clutch motor and a gear sensor are in an electrical failure state; when it is determined the clutch motor and the gear sensor are not in the electrical failure state, determining whether there is a driver's starting intention on the basis of state information on the clutch pedal; setting a target position of the clutch motor according to a pedal setting value set by the clutch pedal; and when it is determined that there is no driver's starting intention and that an actual position of the clutch motor exceeds the target position of the clutch motor, determining a failure of the clutch motor on the basis of an excess movement amount and an excess duration in the excess state.Type: GrantFiled: December 8, 2020Date of Patent: March 15, 2022Assignee: Hyundai Kefico CorporationInventors: Nam Hun Kim, Min Hyo Kim, Chang Min Cho
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Publication number: 20220005377Abstract: A cardiopulmonary resuscitation (CPR) training apparatus for infants is disclosed. The CPR training apparatus for infants includes a body portion, a head portion including a head frame rotatably connected to the body portion, a tunnel portion including a tunnel frame installed on a neck of the body portion, and a lower catching protrusion extending from a lower side of the tunnel frame to an upper side of the tunnel frame, an airway portion including an airway tube installed to be in communication with a mouth of the head portion, and a neutral closure portion connected to an outside of the airway tube so as to be positioned above the lower catching protrusion, and a tube portion configured to connect the airway tube and an artificial lung to each other by passing through the tunnel portion between the lower catching protrusion and the neutral closure portion.Type: ApplicationFiled: July 6, 2021Publication date: January 6, 2022Inventors: Mok CHUNG, Woong HUR, Nam Hun KIM, Ho Gil HAN
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Publication number: 20220005378Abstract: Provided/Disclosed is a cardiopulmonary resuscitation (CPR) training apparatus, comprising: a mannequin including a head portion with an airway, and a body portion connected to the head portion; a compression portion provided in the body portion, the compression portion to be pressed in response to a chest compression; an airbag connected to the airway, the airbag configured to enable an artificial ventilation; and a measurer configured to measure a CPR performance state in response to the chest compression and the artificial ventilation performed on the mannequin.Type: ApplicationFiled: September 16, 2021Publication date: January 6, 2022Applicant: Innosonian Inc.Inventors: Mok CHUNG, Woong Hur, Nam Je Lee, Kwang Hee Choi, Nam Hun Kim
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Patent number: 11187319Abstract: A method for learning a reference position of a DCT gear motor is proposed. The method includes: a first voltage supply step of supplying voltage to the motor to allow the motor to rotate to a stored reference point; a second voltage supply step of repeating a process that increases the level of the voltage supplied to the motor to a higher level than the level of the voltage applied in the first voltage supply step and decreases the level, wherein the voltage is supplied to the motor to gradually increase the level thereof; a step of monitoring a position change of the motor; a step of stopping voltage supply to the motor when a temporary position change is generated in the motor to remove the temporary position change; and a step of setting the current position of the motor as a new reference point.Type: GrantFiled: December 9, 2020Date of Patent: November 30, 2021Assignee: Hyundai Kefico CorporationInventors: Nam Hun Kim, Tae Su Kim
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Patent number: 11158211Abstract: Provided/Disclosed is a cardiopulmonary resuscitation (CPR) training apparatus, comprising: a mannequin including a head portion with an airway, and a body portion connected to the head portion; a compression portion provided in the body portion, the compression portion to be pressed in response to a chest compression; an airbag connected to the airway, the airbag configured to enable an artificial ventilation; and a measurer configured to measure a CPR performance state in response to the chest compression and the artificial ventilation performed on the mannequin.Type: GrantFiled: July 2, 2018Date of Patent: October 26, 2021Assignee: INNOSONIAN INC.Inventors: Mok Chung, Woong Hur, Nam Je Lee, Kwang Hee Choi, Nam Hun Kim
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Publication number: 20210325706Abstract: An optical device includes a first outer substrate; a second outer substrate disposed opposite to the first outer substrate; and an active liquid crystal film or a polarizer, wherein the active liquid crystal film or the polarizer is encapsulated by an encapsulating agent between the first and second outer substrates and wherein a shrinkable film adjacent to any one of the first and second outer substrates is further included. The optical device is capable of varying transmittance. The optical device can be used for various applications such as an eyewear, for example, sunglasses or AR (augmented reality) or VR (virtual reality) eyewears, an outer wall of a building or a sunroof for a vehicle.Type: ApplicationFiled: September 3, 2019Publication date: October 21, 2021Applicant: LG Chem, Ltd.Inventors: Jung Woon KIM, Byoung Kun JEON, Beom Jin LEE, In Ju MUN, Su Young RYU, Seong Min LEE, Young Shin LEE, Nam Hun KIM
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Publication number: 20210316984Abstract: The present disclosure integrates an actuated tilting rehabilitation table, video tracking of the patient arm and opposite shoulder, a low-friction forearm support with grasping force sensing, remote data transmission and additional weighing means, one or more large displays, a computer and a plurality of simulation exercises, such as video games. The patient can be monitored by a local or remote clinician. The table tilts in order to increase exercise difficulty due to gravity loading on the patient's arm and shoulder. In one embodiment, the actuated tilting table tilts in four degrees of freedom.Type: ApplicationFiled: January 16, 2018Publication date: October 14, 2021Applicant: Bright Cloud International Corp.Inventors: Grigore C. Burdea, Nam Hun Kim, Doru Tadeusz Roll
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Patent number: 11136234Abstract: The present disclosure integrates an actuated tilting rehabilitation table, video tracking of the patient arm and opposite shoulder, a low-friction forearm support with grasping force sensing, remote data transmission and additional weighing means, one or more large displays, a computer and a plurality of simulation exercises, such as video games. The patient can be monitored by a local or remote clinician. The table tilts in order to increase exercise difficulty due to gravity loading on the patient's arm and shoulder. In one embodiment, the actuated tilting table tilts in four degrees of freedom.Type: GrantFiled: January 16, 2018Date of Patent: October 5, 2021Assignee: Bright Cloud International CorporationInventors: Grigore C. Burdea, Nam Hun Kim, Doru Tadeusz Roll
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Patent number: 11137650Abstract: The present application relates to an optical element, a driving method of the optical element, a transmittance-variable device and a use thereof. In one example, the present application may provide a driving method suppressing a back-flow phenomenon caused by a bulk liquid crystal compound even when a cell gap of a liquid crystal layer becomes thick. The driving method may ensure excellent response speeds and driving characteristics.Type: GrantFiled: September 27, 2018Date of Patent: October 5, 2021Inventors: Eun Jung Lim, Dong Hyun Oh, Jung Sun You, Jin Hong Kim, Hyun Jun Lee, Nam Hun Kim, Min Jun Gim
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Publication number: 20210223602Abstract: An optical device is provided in the present application. The optical device of the present application has varying transmittance and improved appearance defects, such as reduction of wrinkles that may occur by lamination of a liquid crystal element and an outer substrate. Such optical device can be used for various applications such as eyewear, for example, sunglasses or AR (augmented reality) or VR (virtual reality) eyewear, an outer wall of a building or a sunroof for a vehicle.Type: ApplicationFiled: July 18, 2019Publication date: July 22, 2021Applicant: LG Chem, Ltd.Inventors: Nam Hun Kim, Byoung Kun Jeon, Doo Young Huh, Su Young Ryu, Seong Min Lee, Jung Woon Kim, Young Shin Lee
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Patent number: 11046007Abstract: The present invention relates to a three-dimensional printing optimal size correcting device and a correcting method.Type: GrantFiled: August 4, 2015Date of Patent: June 29, 2021Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Hyeon Nam Kim, Nam Hun Kim