Patents by Inventor Hee Chul Lee

Hee Chul 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).

  • Publication number: 20210169573
    Abstract: A medical handpiece having a laser irradiation unit connected to a body for generating a laser beam, so as to irradiate a subject with the laser beam; a laser tip which is brought into contact with a predetermined surgical site of the subject so as to guide the laser thereto; a sensor installed in the laser tip so as to measure pressure applied by the laser tip to the predetermined surgical site; and a processor for checking whether the measured pressure is within the pressure range set for the predetermined surgical site, determining, according to the result of the checking, whether the pressure applied to the predetermined surgical site needs to be adjusted, and performing control such that a guide signal for the laser tip is output.
    Type: Application
    Filed: November 7, 2018
    Publication date: June 10, 2021
    Inventor: Hee Chul LEE
  • Publication number: 20210113851
    Abstract: A medical laser apparatus according to an embodiment of the present invention comprises: a laser oscillation unit for oscillating a laser; a beam width adjustment unit for adjusting the beam width of the laser oscillated from the laser oscillation unit; and a concentration unit for concentrating the laser of which the beam width has expanded by means of the beam width adjustment unit.
    Type: Application
    Filed: April 10, 2018
    Publication date: April 22, 2021
    Inventor: Hee Chul LEE
  • Patent number: 10890796
    Abstract: An electronic device includes a circuit board including at least one electronic component, a housing accommodating the circuit board, an emissivity control layer disposed in an upper portion of the circuit board and transmitting radiant heat generated by the electronic component, and a temperature controller controlling an amount of the radiant heat transmitted to the housing by adjusting the emissivity of the emissivity control layer. The temperature controller may adjust the emissivity of the emissivity control layer to a first range value, when the electronic device is in an idle state, not performing a foreground operation, and may adjust the emissivity of the emissivity control layer to a second range value, lower than the first range value, when the electronic device is in a busy state, performing the foreground operation.
    Type: Grant
    Filed: June 14, 2019
    Date of Patent: January 12, 2021
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ki Taek Lee, Hae Jung Yang, Hee Youb Kang, Young Rok Oh, Hee Chul Lee
  • Publication number: 20200367967
    Abstract: A microlens array for converting incident light into a multi-spot beam to focus an object, the microlens array having a plurality of microlenses each having a curved surface forming a predetermined focal length, wherein at least some of the plurality of microlenses have different focal lengths or are different in the height position from which the corresponding curved surface starts.
    Type: Application
    Filed: November 15, 2018
    Publication date: November 26, 2020
    Inventor: Hee Chul LEE
  • Patent number: 10756028
    Abstract: Provided is a radiation-tolerant unit MOSFET to block a leakage current path caused by a total ionizing dose effect and reduce influence of a current pulse generated due to a single event effect. The radiation-tolerant unit MOSFET includes a poly gate layer for designating a gate region and at least one dummy gate region, a source and a drain, and a P+ layer and a P-active layer for specifying a P+ region to the source and the drain, and a dummy drain allowing application of a voltage. An electronic part that may normally operate is provided even a radiation environment where particle radiation and electromagnetic radiation are present.
    Type: Grant
    Filed: September 6, 2018
    Date of Patent: August 25, 2020
    Assignee: Korea Advanced Institute of Science and Technology
    Inventors: Hee Chul Lee, Young Tak Roh
  • Patent number: 10756167
    Abstract: Provided is a radiation-tolerant 3D unit MOSFET having at least one selected from a dummy drain (DD), an N-well layer (NW), a deep N-well layer (DNW), and a P+ layer to minimize an influence by a total ionization dose effect and an influence by a single event effect.
    Type: Grant
    Filed: November 14, 2018
    Date of Patent: August 25, 2020
    Assignee: Korea Advanced Institute of Science and Technology
    Inventors: Hee Chul Lee, Young Tak Roh
  • Patent number: 10748488
    Abstract: A display device including: a display panel including a plurality of pixels configured to be driven in a normal mode or an always on display mode; an illuminance sensor configured to detect illuminance of ambient light; a direct current (DC)-DC converter configured to supply a power supply voltage having a first voltage level to the pixels through a power supply line when the illuminance is greater than a predetermined reference value in the always on display mode; and a display panel driver configured to supply a power supply voltage having a second voltage level to the pixels through the power supply line when the illuminance is less than or equal to the predetermined reference value in the always on display mode.
    Type: Grant
    Filed: November 2, 2018
    Date of Patent: August 18, 2020
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventor: Hee Chul Lee
  • Publication number: 20200241335
    Abstract: An electronic device includes a circuit board including at least one electronic component, a housing accommodating the circuit board, an emissivity control layer disposed in an upper portion of the circuit board and transmitting radiant heat generated by the electronic component, and a temperature controller controlling an amount of the radiant heat transmitted to the housing by adjusting the emissivity of the emissivity control layer. The temperature controller may adjust the emissivity of the emissivity control layer to a first range value, when the electronic device is in an idle state, not performing a foreground operation, and may adjust the emissivity of the emissivity control layer to a second range value, lower than the first range value, when the electronic device is in a busy state, performing the foreground operation.
    Type: Application
    Filed: June 14, 2019
    Publication date: July 30, 2020
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Ki Taek LEE, Hae Jung YANG, Hee Youb KANG, Young Rok OH, Hee Chul LEE
  • Publication number: 20200100861
    Abstract: The present invention relates to a spring arm and a laser treatment apparatus including same and, particularly, to a spring arm for a laser treatment apparatus, which can provide an appropriate support force according to a change in the center of gravity of a link at an initial high rotation angle and at a low rotation angle during use, and a laser treatment apparatus including same. According to the present invention, a user fatigue degree can be reduced and accuracy of the apparatus when in use can be improved.
    Type: Application
    Filed: June 12, 2018
    Publication date: April 2, 2020
    Inventors: Hee Chul LEE, Hyun Woong Yoon, Jong Oe BAE
  • Publication number: 20190366118
    Abstract: The present invention relates to a phototherapy apparatus, to a method for operating same, and to a treatment method using same. The phototherapy apparatus includes a body including a first resonator generating a first wavelength of light, a first module connected to the body and radiating the first wavelength of light generated from the first resonator to the outside, and a second module generating a second wavelength of light using the first wavelength of light transmitted from the body and radiating the second wavelength light to the outside.
    Type: Application
    Filed: July 25, 2019
    Publication date: December 5, 2019
    Inventor: Hee Chul LEE
  • Publication number: 20190312102
    Abstract: Provided is a radiation-tolerant 3D unit MOSFET having at least one selected from a dummy drain (DD), an N-well layer (NW), a deep N-well layer (DNW), and a P+ layer to minimize an influence by a total ionization dose effect and an influence by a single event effect.
    Type: Application
    Filed: November 14, 2018
    Publication date: October 10, 2019
    Applicant: Korea Advanced Institute of Science and Technology
    Inventors: Hee Chul Lee, Young Tak Roh
  • Publication number: 20190311678
    Abstract: A display device including: a display panel including a plurality of pixels configured to be driven in a normal mode or an always on display mode; an illuminance sensor configured to detect illuminance of ambient light; a direct current (DC)-DC converter configured to supply a power supply voltage having a first voltage level to the pixels through a power supply line when the illuminance is greater than a predetermined reference value in the always on display mode; and a display panel driver configured to supply a power supply voltage having a second voltage level to the pixels through the power supply line when the illuminance is less than or equal to the predetermined reference value in the always on display mode.
    Type: Application
    Filed: November 2, 2018
    Publication date: October 10, 2019
    Inventor: HEE CHUL LEE
  • Patent number: 10439353
    Abstract: A laser apparatus according to the present invention may comprise: a plurality of reflection mirrors which form a resonance path so as for light to be amplified by an induced emission; a medium having a first surface which forms a vertical surface with respect to the resonance path, and a second interface which does not form a vertical surface with respect to the resonance path, and absorbs energy from a light source and amplifies and emits the light; and a saturable absorber having a second surface which forms a vertical surface with respect to the resonance path, and a second interface which does not form a vertical surface with respect to the resonance path, and generates ultrashort pulses. The laser apparatus according to the present invention has the effects of cutting a saturable absorber having a specific crystallographic axis to thereby make polarization capacity in one direction advantageous and minimize propagation loss.
    Type: Grant
    Filed: March 17, 2016
    Date of Patent: October 8, 2019
    Assignee: LUTRONIC CORPORATION
    Inventor: Hee Chul Lee
  • Publication number: 20190287923
    Abstract: Provided is a radiation-tolerant unit MOSFET to block a leakage current path caused by a total ionizing dose effect and reduce influence of a current pulse generated due to a single event effect. The radiation-tolerant unit MOSFET includes a poly gate layer for designating a gate region and at least one dummy gate region, a source and a drain, and a P+ layer and a P-active layer for specifying a P+ region to the source and the drain, and a dummy drain allowing application of a voltage. An electronic part that may normally operate is provided even a radiation environment where particle radiation and electromagnetic radiation are present.
    Type: Application
    Filed: September 6, 2018
    Publication date: September 19, 2019
    Applicant: Korea Advanced Institute of Science and Technology
    Inventors: Hee Chul Lee, Young Tak Roh
  • Patent number: 10363431
    Abstract: The present invention relates to a phototherapy apparatus, to a method for operating same, and to a treatment method using same. The phototherapy apparatus includes a body including a first resonator generating a first wavelength of light, a first module connected to the body and radiating the first wavelength of light generated from the first resonator to the outside, and a second module generating a second wavelength of light using the first wavelength of light transmitted from the body and radiating the second wavelength light to the outside.
    Type: Grant
    Filed: December 10, 2013
    Date of Patent: July 30, 2019
    Assignee: LUTRONIC CORPORATION
    Inventor: Hee Chul Lee
  • Patent number: 10340652
    Abstract: A laser device according to the present invention may comprise: a pumping laser supply unit for emitting a pumping laser having a nano-second pulse width; and a laser output unit disposed at one side of the pumping laser supply unit and generating an output laser which is pumped by the pumping laser to have a nano-second pulse width corresponding to the pulse width of the pumping laser.
    Type: Grant
    Filed: May 2, 2016
    Date of Patent: July 2, 2019
    Assignee: LUTRONIC CORPORATION
    Inventor: Hee Chul Lee
  • Publication number: 20190160302
    Abstract: The present invention relates to a laser beam device and a laser beam hand piece having same, the laser beam device outputting a laser beam that is polarized and has high output energy. The laser beam device, according to the present invention, comprises: a light source unit emitting a pumping light; a first optical unit generating a laser beam that is polarized by being pumped by the pumping light provided from the light source unit; and a second optical unit amplifying the polarized laser beam provided from the first optical unit. Accordingly, a compact structure and the outputting of a polarized laser beam having amplified output energy may be enabled, and thus the size and manufacturing costs of the laser beam device and the laser beam hand piece having same may be reduced.
    Type: Application
    Filed: April 28, 2017
    Publication date: May 30, 2019
    Inventor: Hee Chul LEE
  • Publication number: 20190160301
    Abstract: The present invention relates to a laser beam device outputting a multi-spot laser beam, and a laser bean hand piece. The laser beam device, according to the present invention, comprises: a light source unit which generates and emits a single-spot laser beam having a first wavelength; a laser beam oscillation unit which outputs the first wavelength single-spot laser beam emitted from the light source unit as any one of a first wavelength multi-spot laser beam and a single-spot laser beam having a second wavelength, and then outputs any one of the outputted first wavelength multi-spot laser beam and second wavelength single-spot laser beam as a second wavelength multi-spot laser beam, and an amplification unit which amplifies the second wavelength multi-spot laser beam so that the output energy of the second wavelength multi-spot laser beam outputted from the laser beam oscillation unit is relatively high output energy.
    Type: Application
    Filed: April 28, 2017
    Publication date: May 30, 2019
    Inventor: Hee Chul LEE
  • Publication number: 20180280086
    Abstract: A laser device according to the present invention may comprise: a pumping laser supply unit for emitting a pumping laser having a nano-second pulse width; and a laser output unit disposed at one side of the pumping laser supply unit and generating an output laser which is pumped by the pumping laser to have a nano-second pulse width corresponding to the pulse width of the pumping laser.
    Type: Application
    Filed: May 2, 2016
    Publication date: October 4, 2018
    Inventor: Hee Chul LEE
  • Publication number: 20180250163
    Abstract: An apparatus for ocular treatment according to the present invention comprises: a beam generation unit for generating a therapeutic beam; a beam transfer unit comprising a first lens part capable of forming an optical path through which the therapeutic beam oscillated from the beam generation unit travels in the ocular fundus, and of varying the focal length so that the beam is transferred in a predetermined spot size in the ocular fundus; and a control unit, connected to the beam transfer unit, for controlling the focal length of the therapeutic beam of the first lens part.
    Type: Application
    Filed: August 31, 2016
    Publication date: September 6, 2018
    Inventor: Hee Chul LEE