Patents by Inventor Guk Jong CHOI

Guk Jong 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).

  • Patent number: 9964749
    Abstract: Disclosed is a fluorescence microscope for imaging a specimen containing a fluorescent substance, the fluorescence microscope including an excitation light source configured to emit an excitation light that excites a fluorescent substance to emit fluorescence; a de-excitation light source configured to emit a de-excitation light that de-excites the fluorescent substance excited by the excitation light emitted from the excitation light source; an optical body configured to overlap a light emitted from the excitation light source and a light emitted from the de-excitation light source, and to discharge the overlapped light toward the specimen; and a solid immersion lens to which the light discharged from the optical body is incident, and configured to refract the light discharged from the optical body toward the specimen. A total internal reflection of the light incident to the solid immersion lens occurs on a bottom of the solid immersion lens.
    Type: Grant
    Filed: October 31, 2016
    Date of Patent: May 8, 2018
    Assignee: INDUSTRY-ACADEMIC COOPERATION FOUNDATION, YONSEI UNIVERSITY
    Inventors: No Cheol Park, Hyung Bae Moon, Won Sup Lee, Geon Lim, Guk Jong Choi
  • Publication number: 20170153436
    Abstract: Disclosed is a fluorescence microscope for imaging a specimen a fluorescent substance, the fluorescence microscope including an excitation light source configured to emit an excitation light that excites a fluorescent substance to emit fluorescence; a de-excitation light source configured to emit a de-excitation light that de-excites the fluorescent substance excited by the excitation light emitted from the excitation light source; an optical body configured to overlap a light emitted from the excitation light source and a light emitted from the de-excitation light source, and to discharge the overlapped light toward the specimen; and a solid immersion lens to which the light discharged from the optical body is incident, and configured to refract the light discharged from the optical body toward the specimen. A total reflection of the light incident to the solid immersion lens occurs on a bottom of the solid immersion lens.
    Type: Application
    Filed: October 31, 2016
    Publication date: June 1, 2017
    Applicant: INDUSTRY-ACADEMIC COOPERATION FOUNDATION, YONSEI UNIVERSITY
    Inventors: No Cheol PARK, Hyung Bae MOON, Won Sup LEE, Geon LIM, Guk Jong CHOI
  • Patent number: 9417386
    Abstract: The present invention relates to a plasmonic optical waveguide using plasmonic coupling between a nano-aperture and a nano-particle. The plasmonic optical waveguide includes the nano-aperture formed with an opening of a nano-scale through which light enters; and a single metal nano-particle arranged at the focal point of the nano-aperture to generate plasmon coupling in association with the light output from the nano-aperture. The plasmonic optical waveguide has an effect of forming a small and strong high-intensity high-density light spot of a sub-wavelength size, in which an amplification rate is increased at the output surface of the nano-particle more than a few hundred times compared with the incident light, since the light is transmitted by plasmon coupling generated between the nano-aperture and the nano-particle.
    Type: Grant
    Filed: April 24, 2015
    Date of Patent: August 16, 2016
    Assignee: INDUSTRY-ACADEMIC COOPERATION FOUNDATION YONSEI UNIVERSITY
    Inventors: No Cheol Park, Won Sup Lee, Do Hyung Kim, Hyungbae Moon, Guk Jong Choi, Sungbin Jeon, Geon Lim
  • Publication number: 20150331185
    Abstract: The present invention relates to a plasmonic optical waveguide using plasmonic coupling between a nano-aperture and a nano-particle. The plasmonic optical waveguide includes the nano-aperture formed with an opening of a nano-scale through which light enters; and a single metal nano-particle arranged at the focal point of the nano-aperture to generate plasmon coupling in association with the light output from the nano-aperture. The plasmonic optical waveguide has an effect of forming a small and strong high-intensity high-density light spot of a sub-wavelength size, in which an amplification rate is increased at the output surface of the nano-particle more than a few hundred times compared with the incident light, since the light is transmitted by plasmon coupling generated between the nano-aperture and the nano-particle.
    Type: Application
    Filed: April 24, 2015
    Publication date: November 19, 2015
    Inventors: No Cheol PARK, Won Sup LEE, Do Hyung KIM, Hyungbae MOON, Guk Jong CHOI, Sungbin JEON, Geon LIM