Patents by Inventor Keo-Sik Kim
Keo-Sik 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).
-
Publication number: 20230409003Abstract: A control method of an integrated facility safety control system predicts short-term safety of a facility by using an artificial intelligence (AI) model embedded in an intelligent edge interrogator and predicts long-term safety of the facility on the basis of long-term sensing data received from the intelligent edge interrogator by using an AI model embedded in a server. Accordingly, a server and an intelligent edge interrogator may divisionally perform an analysis operation on the short-term safety and long-term safety of facility on the basis of data collected from an optical fiber sensor, and thus, may solve a load of data concentrating on a server, a problem of computing power, and a network problem caused by massive data transmission.Type: ApplicationFiled: December 6, 2022Publication date: December 21, 2023Inventors: Jeong Eun KIM, Hyun Seo KANG, Keo Sik KIM, Kyeeun KIM, DAEGIL KIM, Gi Hyeon MIN, Si Woong PARK, Hyoungjun PARK, CHAN IL YEO, Aram LEE, Young Soon HEO
-
Patent number: 11698300Abstract: Provided are an optical system capable of improving the spatial resolution of hyperspectral imaging and an optical alignment method using the same. The optical system includes a digital micromirror device (DMD) having a rectangular shape, a first cylindrical lens curved to focus and form an image on an axis corresponding to a shorter side of the DMD, and a second cylindrical lens curved in the same axial direction as the axis to collimate light reflected from the DMD.Type: GrantFiled: December 9, 2021Date of Patent: July 11, 2023Assignee: Electronics and Telecommunications Research InstituteInventors: Jeong Eun Kim, Kye Eun Kim, Keo Sik Kim, Hyun Seo Kang, Hyun Jin Kim, Gi Hyeon Min, Si Woong Park, Hyoung Jun Park, Chan Il Yeo, Young Soon Heo
-
Patent number: 11454770Abstract: Provided are an apparatus and method for adjusting an optical axis. In the apparatus, an iris diaphragm and a quadrant photodiode (QPD) are used to align optical axes of an optical system of the apparatus so that optical transmission efficiency between an optical transmitter and an optical receiver can be increased. Since a hole of the iris diaphragm can be adjusted to be small, a beam larger than a light-receiving area of the QPD can be included in the light-receiving area, and optical axis alignment is facilitated accordingly. When the QPD and the iris diaphragm are applied to the apparatus, it is possible to simultaneously perform data transmission, tracking, and optical axis alignment. An optical fiber end surface and optical axes of lenses arranged in parallel are aligned in the apparatus so that alignment between two terminals can be easy and reception efficiency can be increased.Type: GrantFiled: August 25, 2020Date of Patent: September 27, 2022Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Young Soon Heo, Sung Chang Kim, Hyun Seo Kang, Chan Il Yeo, Ji Hyoung Ryu, Si Woong Park, Kye Eun Kim, Keo Sik Kim, Jeong Eun Kim, Gi Hyeon Min, Hyoung Jun Park, Dong Hoon Son, Mun Seob Lee
-
Publication number: 20220252451Abstract: Provided are an optical system capable of improving the spatial resolution of hyperspectral imaging and an optical alignment method using the same. The optical system includes a digital micromirror device (DMD) having a rectangular shape, a first cylindrical lens curved to focus and form an image on an axis corresponding to a shorter side of the DMD, and a second cylindrical lens curved in the same axial direction as the axis to collimate light reflected from the DMD.Type: ApplicationFiled: December 9, 2021Publication date: August 11, 2022Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Jeong Eun KIM, Kye Eun KIM, Keo Sik KIM, Hyun Seo KANG, Hyun Jin KIM, Gi Hyeon MIN, Si Woong PARK, Hyoung Jun PARK, CHAN IL YEO, Young Soon HEO
-
Publication number: 20220221342Abstract: Provided is an optical system which may acquire a hyperspectral image by acquiring a spectral image of an object to be measured, which includes, to collect spectral data and train the neural network, an image forming part forming an image from an object to be measured and transmitting collimated light, a slit moving to scan the incident image and passing and outputting a part of the formed image, and a first optical part obtaining spectral data by splitting light of the image received through the slit by wavelength. Also, the system includes, to decompose overlapped spectral data and to infer hyperspectral image data through the trained neural network, an image forming part forming an image from an object to be measured and transmitting collimated light, and a first optical part obtaining spectral data by splitting light of the received image by wavelength.Type: ApplicationFiled: January 7, 2022Publication date: July 14, 2022Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Keo Sik KIM, Kye Eun KIM, Jeong Eun KIM, Hyun Seo KANG, Hyun Jin KIM, Gi Hyeon MIN, Si Woong PARK, Hyoung Jun PARK, CHAN IL YEO, Young Soon HEO
-
Publication number: 20210208535Abstract: Provided are a system and method for digital holographic imaging which are not affected by external vibrations. The system for digital holographic imaging includes a light source and optical system section configured to split generated beams and including a sample through which the beams pass, a lens, and a grating disposed behind the lens; an object signal acquisition section configured to receive the split beams and acquire an interference signal; and an image processor configured to acquire a three-dimensional (3D) image of an object by using the acquired interference signal.Type: ApplicationFiled: March 20, 2020Publication date: July 8, 2021Inventors: Gi Hyeon MIN, Keo Sik KIM, Hyun Seo KANG, Kye Eun KIM, Sung Chang KIM, Ji Hyoung RYU, Si Woong PARK, Hyoung Jun PARK, Dong Hoon SON, Chan Il YEO, Dong Soo LEE, Byung Tak LEE, Young Soon HEO
-
Publication number: 20210063656Abstract: Provided are an apparatus and method for adjusting an optical axis. In the apparatus, an iris diaphragm and a quadrant photodiode (QPD) are used to align optical axes of an optical system of the apparatus so that optical transmission efficiency between an optical transmitter and an optical receiver can be increased. Since a hole of the iris diaphragm can be adjusted to be small, a beam larger than a light-receiving area of the QPD can be included in the light-receiving area, and optical axis alignment is facilitated accordingly. When the QPD and the iris diaphragm are applied to the apparatus, it is possible to simultaneously perform data transmission, tracking, and optical axis alignment. An optical fiber end surface and optical axes of lenses arranged in parallel are aligned in the apparatus so that alignment between two terminals can be easy and reception efficiency can be increased.Type: ApplicationFiled: August 25, 2020Publication date: March 4, 2021Inventors: Young Soon HEO, Sung Chang KIM, Hyun Seo KANG, Chan Il YEO, Ji Hyoung RYU, Si Woong PARK, Kye Eun KIM, Keo Sik KIM, Jeong Eun KIM, Gi Hyeon MIN, Hyoung Jun PARK, Dong Hoon SON, Mun Seob LEE
-
Patent number: 10833763Abstract: A wireless optical communication apparatus for performing bi-directional optical transmission in a free space includes a first optical system configured to transmit data through a downlink scheme and a second optical system configured to receive the data from the first optical system and transmit a control signal to the first optical system through an uplink scheme, wherein each of the first optical system and the second optical system transmits and receives the data and the control signal through a single port.Type: GrantFiled: December 2, 2019Date of Patent: November 10, 2020Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Hyun Seo Kang, Chan Il Yeo, Young Soon Heo, Kye Eun Kim, Sung Chang Kim, Ji Hyoung Ryu, Si Woong Park, Keo Sik Kim, Gi Hyeon Min, Hyoung Jun Park, Dong Hoon Son, Mun Seob Lee
-
Publication number: 20200186247Abstract: A wireless optical communication apparatus for performing bi-directional optical transmission in a free space includes a first optical system configured to transmit data through a downlink scheme and a second optical system configured to receive the data from the first optical system and transmit a control signal to the first optical system through an uplink scheme, wherein each of the first optical system and the second optical system transmits and receives the data and the control signal through a single port.Type: ApplicationFiled: December 2, 2019Publication date: June 11, 2020Inventors: Hyun Seo KANG, Chan Il YEO, Young Soon HEO, Kye Eun KIM, Sung Chang KIM, Ji Hyoung RYU, Si Woong PARK, Keo Sik KIM, Gi Hyeon MIN, Hyoung Jun PARK, Dong Hoon SON, Mun Seob LEE
-
Patent number: 10648860Abstract: Disclosed is a spectroscopic device including a planar lightwave circuit to which light passing through an optical fiber is input, a wavelength divider configured to divide a wavelength of light passing through the planar lightwave circuit, a beam splitter configured to divide a traveling direction of light passing through the wavelength divider into an external sample inlet and an internal sample inlet and adjust power of the divided light, a charge-coupled device (CCD) image sensor configured to covert light transmitted from the internal sample inlet to an electrical signal or convert light reflected by the external sample inlet to an electrical signal, a control and signal processor configured to process the electrical signal to indicate a light intensity based on each wavelength, and an input and output interface configured to perform a spectrum analysis for each wavelength using the processed electrical signal.Type: GrantFiled: January 12, 2018Date of Patent: May 12, 2020Assignee: Electronics and Telecommunications Research InstituteInventors: Hyun Seo Kang, Kyeeun Kim, Keo-Sik Kim, Sung Chang Kim, Ji Hyoung Ryu, Gi Hyeon Min, Si Woong Park, Hyoungjun Park, Dong Hoon Son, Chan Il Yeo, Dongsoo Lee, Young Soon Heo
-
Patent number: 10591714Abstract: Provided is an endoscopic apparatus for thermal distribution monitoring, and more particularly, an endoscopic apparatus for thermal distribution monitoring that is capable of providing a functional image in which various images such as a real image and a thermal image, are matched to one another. The endoscopic apparatus includes: an image collecting unit including a thermal image collecting unit collecting a thermal image from an image signal of an object and a real image collecting unit collecting a real image from the image signal of the object; a controller transmitting a control signal to the image collecting unit so as to transmit the image signal to one of the thermal image collecting unit and the real image collecting unit according to a preset period; and a display displaying the collected thermal image and real image.Type: GrantFiled: May 31, 2017Date of Patent: March 17, 2020Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Keo Sik Kim, Hyun Seo Kang, Sung Chang Kim, Young Sun Kim, Jeong Eun Kim, Hee Seung Kim, Ji Hyoung Ryu, Hyoung Jun Park, Dong Hoon Son, Chan Il Yeo, Young Soon Heo
-
Patent number: 10338326Abstract: Provided are a multi-channel optical subassembly structure allowing an optical unit including a light source photodetector chip to be fixed through an alignment jig after active alignment is performed on an individual or single light source photodetector chip by using the alignment jig capable of electrical coupling and one electrode pad and the other electrode pad of a thermoelectric element, which are wire-bonded, capable of performing active alignment for each light source photodetector chip, that is, for each channel, capable of replacing the optical unit and the alignment jig when a problem occurs in some or all channels, capable of improving optical coupling efficiency for each channel, and capable of addressing a time-consuming and economically expensive work in which an optical subassembly is discarded when some channels fail, and a method of packaging the structure.Type: GrantFiled: April 28, 2017Date of Patent: July 2, 2019Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Jeong Eun Kim, Hyun Seo Kang, Keo Sik Kim, Sung Chang Kim, Young Sun Kim, Ji Hyoung Ryu, Hyoung Jun Park, Dong Hoon Son, Chan Il Yeo, Young Soon Heo
-
Publication number: 20190146296Abstract: Disclosed is a variable optical attenuator. The variable optical attenuator includes an electrochromic device having a reflective property or a transflective property, a lens configured to convert input light to focused light or collimated light and input the focused light or the collimated light to the electrochromic device, and an outputter configured to output light reflected from the electrochromic device, in which the electrochromic device is configured to attenuate an intensity of the input light by controlling a reflectivity and a transmissivity of the input light based on an element included in the electrochromic device and a voltage to be applied to the electrochromic device.Type: ApplicationFiled: March 12, 2018Publication date: May 16, 2019Applicant: Electronics and Telecommunications Research InstituteInventors: CHAN IL YEO, Dong Hoon SON, Hyun Seo KANG, Keo-Sik KIM, Kyeeun KIM, Sung Chang KIM, Ji Hyoung RYU, Gi Hyeon MIN, Si Woong PARK, Hyoungjun PARK, Dongsoo LEE, Young Soon HEO
-
Publication number: 20190128733Abstract: Disclosed is a spectroscopic device including a planar lightwave circuit to which light passing through an optical fiber is input, a wavelength divider configured to divide a wavelength of light passing through the planar lightwave circuit, a beam splitter configured to divide a traveling direction of light passing through the wavelength divider into an external sample inlet and an internal sample inlet and adjust power of the divided light, a charge-coupled device (CCD) image sensor configured to covert light transmitted from the internal sample inlet to an electrical signal or convert light reflected by the external sample inlet to an electrical signal, a control and signal processor configured to process the electrical signal to indicate a light intensity based on each wavelength, and an input and output interface configured to perform a spectrum analysis for each wavelength using the processed electrical signal.Type: ApplicationFiled: January 12, 2018Publication date: May 2, 2019Applicant: Electronics and Telecommunications Research InstituteInventors: Hyun Seo KANG, Kyeeun KIM, Keo-Sik KIM, Sung Chang KIM, Ji Hyoung RYU, Gi Hyeon MIN, Si Woong PARK, Hyoungjun PARK, Dong Hoon SON, CHAN IL YEO, Dongsoo LEE, Young Soon HEO
-
Publication number: 20190090726Abstract: Disclosed is an optical device. The optical device includes: a first WDM filter for dividing an optical signal transmitted through and reflected from a measured subject into an optical signal of an infrared band and a first optical signal through wavelength division multiplexing; a first LC tunable wavelength filter disposed at an output end of the first WDM filter, and selectively filtering the optical signal of the infrared band; a second WDM filter for dividing the first optical signal into an optical signal of a first visible light band and a second optical signal through wavelength division multiplexing; and a second LC tunable wavelength filter disposed at an output end of the second WDM filter, and selectively filtering the optical signal of the first visible light band.Type: ApplicationFiled: July 20, 2018Publication date: March 28, 2019Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTIT UTEInventors: Hyoungjun PARK, Ji Hyoung RYU, Keo-Sik KIM, Hyun Seo KANG, Kyeeun KIM, Sung Chang KIM, Gi Hyeon MIN, Si Woong PARK, Dong Hoon SON, CHAN IL YEO, Dongsoo LEE, Young Soon HEO
-
Patent number: 10222624Abstract: Provided is a multi-channel optical module device. The optical module device includes: a light source unit configured to include a plurality of laser diodes that are capable of wavelength modulation according to current; a beam splitter unit configured to include a plurality of beam splitters that have different reflectivity and transmissivity and reflect or transmit light output from each laser diode of the light source unit to output them in a first direction or a second direction; and an optical coupler configured to couple and output the light from the beam splitter unit. Center wavelengths of the laser diodes of the light source unit are different from each other, and the number of output channels varies according to the number of laser diodes.Type: GrantFiled: April 20, 2016Date of Patent: March 5, 2019Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Jeong Eun Kim, Hyun Seo Kang, Keo-Sik Kim, Ji Hyoung Ryu, Hyoungjun Park, Young Soon Heo
-
Patent number: 10209443Abstract: Disclosed is a multi-wavelength transmission apparatus including a wavelength divider to divide an optical signal by wavelength and output wavelength-divided optical signals to different positions, the optical signal being received from an optical circulator, a first cylindrical lens to diverge the wavelength-divided optical signals along an X axis and a Y axis and allow the wavelength-divided optical signals to be promoted in a Z-direction, a second cylindrical lens to diverge optical signals output from the first cylindrical lens along the X axis and the Y axis and allow the output optical signals to be promoted in the Z-direction, and a reflector to reflect optical signals output from the second cylindrical lens toward the second cylindrical lens, the first cylindrical lens being identical in shape to the second cylindrical lens and rotated by 90° in an Y-axial direction based on the second cylindrical lens.Type: GrantFiled: November 6, 2017Date of Patent: February 19, 2019Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Hyun Seo Kang, Eun Kyoung Jeon, Jaisang Koh, Keo-Sik Kim, Sung Chang Kim, Jeong Eun Kim, Ji Hyoung Ryu, Hyoungjun Park, Dong Hoon Son, Chan Il Yeo, Dongsoo Lee, Seihyoung Lee, Young Soon Heo
-
Publication number: 20180252579Abstract: An integrated optical measurement apparatus includes: an optical signal transmission unit varying a wavelength of an optical signal to be transmitted and controlling power of the optical signal such that the wavelength is varied to be output to the outside; an optical signal receiving unit measuring power and a wavelength from the optical signal input from the outside; and a controller controlling the optical signal transmission unit and the optical signal receiving unit.Type: ApplicationFiled: November 29, 2017Publication date: September 6, 2018Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Hyun Seo KANG, Jeong Eun KIM, Jaisang KOH, Keo-Sik KIM, Sung Chang KIM, Hee Seung KIM, Ji Hyoung RYU, Hyoungjun PARK, Dong Hoon SON, CHAN IL YEO, Young Soon HEO
-
Patent number: 10057451Abstract: Disclosed herein are an astral lamp device having detachable and angle-controllable LED module blocks and a method of setting the same. The astral lamp device having detachable and angle-controllable LED module blocks, includes a plurality of LED module blocks having one end attached to and disposed on a central frame; and an angle control part configured to control an angle of the LED module block attached to the central frame.Type: GrantFiled: September 29, 2015Date of Patent: August 21, 2018Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Jeong Eun Kim, Hyun Seo Kang, Hyoung Jun Park, Dae Won Choi, Jai Sang Koh, Keo Sik Kim, Young Sun Kim, Ji Hyoung Ryu, Kwon Seob Lim, Eun Kyoung Jeon, Young Soon Heo
-
Patent number: 10029334Abstract: An apparatus for monitoring a laser welding bead irradiates a laser to a surface of a welding bead when welding with a laser welding machine, collects a signal reflected from the surface of the welding bead as an image signal, and then extracts at least one feature variable of a bead shape using the collected image signal. Then, the apparatus for monitoring the laser welding bead determines welding defects using the at least one feature variable, and controls an operation of the laser welding machine according to whether or not the welding defects are generated.Type: GrantFiled: June 27, 2014Date of Patent: July 24, 2018Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Keo-Sik Kim, Hyun Seo Kang, Young Soon Heo, Hyoungjun Park, Kwon-Seob Lim, Jeong Eun Kim, Eun Kyoung Jeon