Patents by Inventor Tae Won Lee

Tae Won Lee 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).

  • Laser optic module
    Patent number: 9099832
    Abstract: Provided is a laser optic module including: a laser light source which generates laser light; a beam guide which includes a light path whose side wall is a reflective surface to introduce the laser light into the light path to guide the laser light; and a fluorescent substance which is provided at a point where the light path of the beam guide ends and emits fluorescence by the laser light, in which a width of the light path is formed by a full width at half maximum (FWHM) of the laser light in a position where the laser light is incident onto the fluorescent substance. Therefore, the laser light is directly used to improve luminance efficiency and reduce a size by adopting a simple structure.
    Type: Grant
    Filed: December 13, 2013
    Date of Patent: August 4, 2015
    Assignee: Hyundai Mobis Co., Ltd.
    Inventor: Tae Won Lee
  • LASER OPTICAL SYSTEM FOR HEAD LAMP
    Publication number: 20150176791
    Abstract: A laser optical system for a head lamp may include a laser diode emitting light, a PCB substrate to which the laser diode is attached, the PCB substrate controlling supply of current to the laser diode, a fluorescent body located in front of the laser diode, reacting with the light emitted from the laser diode and thereby outputting white light, a guide path located in front of the laser diode and guiding light, which is outputted from the laser diode, to the fluorescent body, and an internal reflecting surface located between the fluorescent body and the guide path and connected to the guide path, the internal reflecting surface reflecting light, which has been incident on the fluorescent body and scattered backwards, to the fluorescent body.
    Type: Application
    Filed: August 15, 2014
    Publication date: June 25, 2015
    Applicants: Hyundai Motor Company, Hyundai Mobis Co., Ltd.
    Inventors: Byoung Suk AHN, Tae Won LEE
  • Maximum power point tracker, power conversion controller, power conversion device having insulating structure, and method for tracking maximum power point thereof
    Patent number: 9054601
    Abstract: Disclosed are a maximum power point tracker, a power conversion controller, a power conversion device having an insulating structure, and a method for tracking maximum power point. The power conversion device includes: a DC/AC converter including a primary DC chopper unit having a primary switch, a transformer, and an AC/AC conversion unit including a secondary switch; a current detector detecting current from an input stage of the DC/AC converter and providing a detected current value; a voltage detector detecting a system voltage from an output stage of the DC/AC converter; and a power conversion controller generating a primary PWM signal to be provided to the primary DC chopper unit and secondary first and second PWM signals, having the mutually opposing phases, to be provided to the AC/AC conversion unit by using the detected current value and the system voltage.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: June 9, 2015
    Assignees: SAMSUNG ELECTRO-MECHANICS CO., LTD., SUNGKYUNKWAN UNIVERSITY FOUNDATION FOR CORPORATION COLLABORATION
    Inventors: Jin Wook Kim, Tae Won Lee, Dong Seong Oh, Yong Hyok Ji, Byoung Kuk Lee, Chung Yuen Won, Jae Hyung Kim, Young Ho Kim
  • Composition for preventing or treating osteoporosis, and manufacturing method therefor
    Patent number: 9044401
    Abstract: Provided is a composition for preventing or treating osteoporosis. The composition contains an ibandronic acid, or a pharmaceutically acceptable salt thereof, or a hydrate thereof, and vitamin D. The composition has uniform medicinal effects by minimizing the differences in physical properties between ibandronic acid, or the pharmaceutically acceptable salt thereof, or the hydrate thereof, and vitamin D.
    Type: Grant
    Filed: June 3, 2011
    Date of Patent: June 2, 2015
    Assignees: Navipharm Co., Ltd., Dream Pharma Corporation
    Inventors: Sang-Geun Park, Chang-Kyoo Lee, Tae-Won Lee
  • Even-level inverter
    Patent number: 9042137
    Abstract: There is provided an even-level inverter, including: a voltage-dividing circuit dividing input DC power into an even number of voltage levels; a plurality of switching devices connected to individual nodes of the voltage-dividing circuit having the even number of voltage levels; and a bidirectional switching device connected to the individual nodes of the voltage-dividing circuit through at least one of the plurality of switching devices and including at least two transistors. According to the present invention, the bidirectional switching device is implemented without a diode to thereby reduce conduction loss caused due to an anti-parallel diode included in the related art bidirectional switching device, and a neutral point of the voltage-dividing circuit is electrically separated from the switching devices to thereby control reactive power.
    Type: Grant
    Filed: February 1, 2012
    Date of Patent: May 26, 2015
    Assignees: SAMSUNG ELECTRO-MECHANICS CO., LTD., INDUSTRY FOUNDATION OF CHONNAM NATIONAL UNIVERSITY
    Inventors: Min Ho Heo, Tae Hoon Kim, Sung Jun Park, Doo Young Song, Tae Won Lee
  • LASER OPTIC MODULE
    Publication number: 20150138774
    Abstract: Provided is a laser optic module including: a laser light source which generates laser light; a beam guide which includes a light path whose side wall is a reflective surface to introduce the laser light into the light path to guide the laser light; and a fluorescent substance which is provided at a point where the light path of the beam guide ends and emits fluorescence by the laser light, in which a width of the light path is formed by a full width at half maximum (FWHM) of the laser light in a position where the laser light is incident onto the fluorescent substance. Therefore, the laser light is directly used to improve luminance efficiency and reduce a size by adopting a simple structure.
    Type: Application
    Filed: December 13, 2013
    Publication date: May 21, 2015
    Applicant: HYUNDAI MOBIS CO., LTD.
    Inventor: Tae Won LEE
  • HEAD LAMP FOR VEHICLE
    Publication number: 20150109806
    Abstract: A head lamp for a vehicle includes a laser light source module. The laser light source module comprises a laser diode generating a laser beam. A phosphor is mounted in front of the laser diode to react to light from the laser diode to output white light. A short wave pass filter is coupled with the phosphor to transmit a laser beam from the laser diode to the phosphor and retro-reflect light scattered in remaining directions avoiding a light emitting surface of the phosphor among the laser beam incident on the phosphor to the phosphor.
    Type: Application
    Filed: October 17, 2014
    Publication date: April 23, 2015
    Inventors: Byoung Suk AHN, Tae Won LEE
  • Molten carbonate fuel cells including reinforced lithium aluminate matrix, method for preparing the same, and method for supplying lithium source
    Patent number: 8999598
    Abstract: Disclosed is a molten carbonate fuel cell comprising a reinforced lithium aluminate matrix, a cathode, an anode, a cathode frame channel and an anode frame channel, wherein at least one of the cathode frame channel and the anode frame channel is filled with a lithium source. Disclosed also are a method for producing the same, and a method for supplying a lithium source. The molten carbonate fuel cell in which a lithium source is supplied to an electrode has high mechanical strength and maintains stability of electrolyte to allow long-term operation.
    Type: Grant
    Filed: January 18, 2012
    Date of Patent: April 7, 2015
    Assignee: Korea Institute of Science & Technology
    Inventors: Sung Pil Yoon, In Hwan Oh, Jong Hee Han, Suk Woo Nam, Seong Cheol Jang, Shin Ae Song, Tae Won Lee, In Gab Chang, Bo Hyun Ryu
  • COMPUTED TOMOGRAPHY APPARATUS, AND METHOD OF GENERATING IMAGE BY USING COMPUTED TOMOGRAPHY APPARATUS
    Publication number: 20150036792
    Abstract: A computed tomography apparatus includes an X-ray irradiation unit irradiating an X-ray to an object while rotating along a predetermined rotation path, a detector acquiring projection data by detecting an X-ray transmitted through the object, a filter unit located between the X-ray irradiation unit and the object and comprising a plurality of transmissive areas and a plurality of slightly transmissive areas that are arranged in a predetermined direction, and a control unit controlling a motion of the filter unit to allow a relative position of the plurality of transmissive areas with respect to the X-ray irradiation unit and a relative position of the plurality of slightly transmissive areas with respect to the X-ray irradiation unit to change while the X-ray irradiation unit rotates.
    Type: Application
    Filed: August 1, 2014
    Publication date: February 5, 2015
    Applicants: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY, SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jonghyon YI, Seung-ryong CHO, Toshihiro RIFU, Dae-hyung PARK, Tae-won LEE
  • Laser diode mounting substrate for automotive lamp module
    Patent number: 8917749
    Abstract: Provided is a laser diode mounting substrate for an automotive lamp module using a laser diode. The substrate includes: a substrate body with a power supply circuit pattern, which electrically connects a connector with a contact point of the laser diode, on the top; a first heat conduction layer disposed at the area except for the power supply circuit pattern, on the top of the substrate body; and a second heat conduction layer disposed on the bottom of the substrate body, in which at least one heat transfer hole is disposed through the first heat conduction layer, the substrate body, and the second heat conduction layer. Therefore, the present invention provides an effect that heat generated by the laser diode can be effectively dissipated.
    Type: Grant
    Filed: January 29, 2014
    Date of Patent: December 23, 2014
    Assignee: Hyundai Mobis Co., Ltd.
    Inventor: Tae Won Lee
  • Fabrication method of electrolyte impregnanted cathodes
    Patent number: 8911820
    Abstract: Disclosed is a method for manufacturing an electrode, that is, a large-sized cathode, used for a molten carbonate fuel cell. In the disclosed method, a substrate and a pressure plate, used for electrolyte impregnation, are surface-treated so as to control the bending and cracking of the electrode during the impregnation of an electrolyte.
    Type: Grant
    Filed: June 23, 2010
    Date of Patent: December 16, 2014
    Assignee: Doosan Heavy Industries & Construction Co., Ltd.
    Inventors: Jang Yong Yoo, Bo Hyun Ryu, Hwan Moon, Ju Young Youn, Mi Young Shin, Ju Heung Kim, Dae Gyo O, Kong Taek Lim, In Gap Jang, Tae Won Lee, Kil Ho Moon
  • FUEL CELL SYSTEM AND METHOD FOR DRIVING SAME
    Publication number: 20140349144
    Abstract: The present application relates to a fuel cell system and a method for driving same, which can produce stable electricity, enhance load following capability, and simultaneously increasing fuel utilization rate and energy efficiency by separately managing a base load and a load following of a fuel cell, and the fuel cell system according to one embodiment of the present application comprises: a molten carbonate fuel cell for generating electricity by using fuel; a reaction gas for shifting discharge gas into water gas; a buffer tank for storing the water gas; and a driving device which is actuated by using the water gas that is stored and provided from the buffer tank.
    Type: Application
    Filed: November 28, 2012
    Publication date: November 27, 2014
    Applicant: DOOSAN HEAVY INDUSTRIES & CONSTRUCTION CO., LTD.
    Inventors: Sung Hoon Kim, Choa Moon Yun, Tae Hee Kim, Gi Pung Lee, Tae Won Lee
  • Head lamp apparatus of automobile and method of controlling the same
    Patent number: 8888340
    Abstract: A head lamp apparatus of an automobile and a method of controlling the same light a curved road by rotating one of a left DBL and a right DBL to the left or right according to a relative distance reflecting a driving speed of the automobile, not an absolute distance from a driving position of the automobile before the automobile enters the curved road on a driving path.
    Type: Grant
    Filed: May 13, 2013
    Date of Patent: November 18, 2014
    Assignee: HYUNDAI MOBIS Co., Ltd.
    Inventor: Tae won Lee
  • DC/DC converter, and electric generating system using solar cell having the same
    Patent number: 8867238
    Abstract: Disclosed herein is an electric generating system using a solar cell which converts a voltage generated in the solar cell into an Alternating Current (AC) voltage, and applies the converted voltage to a power system. The electric generating system includes; a Direct Current (DC)/DC converter that converts the voltage generated in the solar cell into a DC voltage, and has a synchronous rectifier including a synchronous switch; and a controller that detects one of a phase and a voltage of the power system, and selectively connects the synchronous switch of the synchronous rectifier in accordance with one of the phase and voltage of the power system. Here, the electric generating system reduces a conduction loss, and increases overall efficiency of the electric generation system.
    Type: Grant
    Filed: May 2, 2012
    Date of Patent: October 21, 2014
    Assignees: Samsung Electro-Mechanics Co., Ltd., Sungkyunkwan University Foundation for Corporate Collaboration
    Inventors: Tae Won Lee, Kwang Soo Choi, Min Ho Heo, Jeong Kyu Park, Chung Yuen Won, Yong Hyok Ji, Young Ho Kim, Tae Hoon Kim
  • SOLAR POWER SUPPLY APPARATUS AND METHOD OF CONTROLLING POWER SUPPLY THEREOF
    Publication number: 20140301113
    Abstract: There are provided a solar power supply apparatus switching a synchronous rectifying switch instead of a snubber switch to increase power conversion efficiency, and a method of controlling power supply thereof. The solar power supply apparatus includes a power supply unit switching power input by a photovoltaic cell to convert power, synchronously rectifying and outputting the power converted depending on the power conversion switching, and suppressing surplus power generated by the power conversion switching in a snubbing operation; and a control unit controlling the synchronous rectification operation and the snubbing operation of the power supply unit depending on a spike voltage generated by the power conversion switching.
    Type: Application
    Filed: July 12, 2013
    Publication date: October 9, 2014
    Inventors: Tae Won LEE, Jin Woo JANG, Young Hyok JI, Young Ho KIM, Chung Yuen WON, Min Ho HEO, Jun Gu KIM
  • AUTOMOTIVE LAMP MODULE
    Publication number: 20140293631
    Abstract: An automotive lamp module includes a laser diode, a substrate with the laser diode on the top, a lower heat sink coupled to the bottom of the substrate, an upper heat sink coupled to the top of the substrate and having a light channel disposed through the upper heat sink and in which the laser diode is inserted, and a phosphor disposed in the light channel. Accordingly, it is possible to provide a simple configuration and a compact size and to effectively dissipate heat generated from the laser diode.
    Type: Application
    Filed: January 31, 2014
    Publication date: October 2, 2014
    Applicant: HYUNDAI MOBIS CO., LTD.
    Inventor: Tae Won Lee
  • LASER DIODE MOUNTING SUBSTRATE FOR AUTOMOTIVE LAMP MODULE
    Publication number: 20140294025
    Abstract: Provided is a laser diode mounting substrate for an automotive lamp module using a laser diode. The substrate includes: a substrate body with a power supply circuit pattern, which electrically connects a connector with a contact point of the laser diode, on the top; a first heat conduction layer disposed at the area except for the power supply circuit pattern, on the top of the substrate body; and a second heat conduction layer disposed on the bottom of the substrate body, in which at least one heat transfer hole is disposed through the first heat conduction layer, the substrate body, and the second heat conduction layer. Therefore, the present invention provides an effect that heat generated by the laser diode can be effectively dissipated.
    Type: Application
    Filed: January 29, 2014
    Publication date: October 2, 2014
    Applicant: HYUNDAI MOBIS CO., LTD.
    Inventor: Tae Won LEE
  • Electric generating system using solar cell
    Patent number: 8837177
    Abstract: An electric generating system using a solar cell improves the quality of output power by including a converter for converting an output voltage generated from the solar cell into DC voltage in a pulse shape. An inverter converts the DC voltage in the pulse shape into an AC voltage and applies the AC voltage to a power system and a control device for determining whether an erroneous operation of the electric generating system using the solar cell is generated or not based on an output voltage of the solar cell, an output current of the solar cell and a voltage of the power system. At least one inverter switching device among a plurality of inverter switching devices performs a switching at a frequency higher than a frequency during a normal operation at an interval where the erroneous operation is generated.
    Type: Grant
    Filed: March 6, 2012
    Date of Patent: September 16, 2014
    Assignees: Samsung Electro-Mechanics Co., Ltd., Sungkyunkwan University Foundation for Corporate Collaboration
    Inventors: Tae Won Lee, Yong Hyok Ji, Young Ho Kim, Doo Young Song, Min Ho Heo, Tae Hoon Kim, Se Ho Lee, Chung Yuen Won
  • MULTILEVEL INVERTER
    Publication number: 20140198547
    Abstract: There is provided a multilevel inverter capable of easily perform balancing of voltages by way of controlling switching of voltage dividing based on an offset between voltages divided by capacitors of a voltage dividing circuit. The multilevel inverter includes: a voltage dividing unit including a plurality of capacitors for dividing an input direct current (DC) voltage; an inverter unit switching the divided DC voltages to output a predetermined alternating current (AC) voltage; and a control unit providing a control signal for controlling switching of the inverter unit based on an offset between the voltages divided by the plurality of capacitors.
    Type: Application
    Filed: December 26, 2013
    Publication date: July 17, 2014
    Applicants: INDUSTRY FOUNDATION OF CHONNAM NATIONAL UNIVERSITY, SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Min Ho HEO, Tae Won LEE, Sung Jun PARK, Tae Hoon KIM, Kwang Soo CHOI
  • Electric generating system with a controller controlling a snubber device
    Patent number: 8755202
    Abstract: Disclosed herein is an electric generating system using a solar cell, including: a DC/DC converter that converts output voltage generated from a solar cell into DC voltage and has a converter switching device; a snubber device that has a snubber switch clamping voltage applied to the converter switching device; and a control device that detects the voltage applied to the converter switching device and controls an operation of the snubber switch according to a detected voltage level applied to the converter switching device, thereby increasing the efficiency of the electric generating system using a solar cell while reducing switching loss and conduction loss.
    Type: Grant
    Filed: February 2, 2012
    Date of Patent: June 17, 2014
    Assignees: Samsung Electro-Mechanics Co., Ltd., Sungkyunkwan University Foundation for Corporate Collaboration
    Inventors: Tae Won Lee, Young Ho Kim, Yong Hyok Ji, Doo Young Song, Min Ho Heo, Tae Hoon Kim, Chung Yuen Won