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).
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Patent number: 10018791Abstract: Provided is a multi-channel optical subassembly. The multi-channel optical subassembly includes a first sub-mount including first and second areas having different thicknesses, a photoelectric device provided in the first area, a circuit board provided in the second area, a second sub-mount inserted into and fastened to the first guide hole and coupled to the first sub-mount, an optical fiber array fixed to the second sub-mount to provide a path through which light emitted from the photoelectric device is received or transferred, and a micro-lens array mounted on the second sub-mount. The first guide hole is provided in one of the first and second areas. The micro-lens array includes a lens collecting the light between the photoelectric device and the optical fiber array.Type: GrantFiled: September 19, 2017Date of Patent: July 10, 2018Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Young Soon Heo, Hyun Seo Kang, Keo Sik Kim, Sung Chang Kim, Young Sun Kim, Jeong Eun Kim, Hee Seung Kim, Ji Hyoung Ryu, Hyoung Jun Park, Dong Hoon Son, Chan Il Yeo
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Publication number: 20180128978Abstract: 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: ApplicationFiled: November 6, 2017Publication date: May 10, 2018Applicant: 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
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Publication number: 20180100978Abstract: 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: ApplicationFiled: April 28, 2017Publication date: April 12, 2018Inventors: 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
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Publication number: 20180088378Abstract: Disclosed is a polarimetric-analysis-type dual liquid crystal (LC) wavelength filter module capable of miniaturization or optical integration in the form of a package.Type: ApplicationFiled: April 27, 2017Publication date: March 29, 2018Applicant: Electronics and Telecommunications Research InstituteInventors: Hyoung Jun PARK, Hyun Seo KANG, Keo Sik KIM, Sung Chang KIM, Young Sun KIM, Jeong Eun KIM, Hee Seung KIM, Ji Hyoung RYU, Dong Hoon SON, Chan Il YEO, Young Soon HEO
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Publication number: 20180081131Abstract: Provided is a multi-channel optical subassembly. The multi-channel optical subassembly includes a first sub-mount including first and second areas having different thicknesses, a photoelectric device provided in the first area, a circuit board provided in the second area, a second sub-mount inserted into and fastened to the first guide hole and coupled to the first sub-mount, an optical fiber array fixed to the second sub-mount to provide a path through which light emitted from the photoelectric device is received or transferred, and a micro-lens array mounted on the second sub-mount. The first guide hole is provided in one of the first and second areas. The micro-lens array includes a lens collecting the light between the photoelectric device and the optical fiber array.Type: ApplicationFiled: September 19, 2017Publication date: March 22, 2018Inventors: Young Soon HEO, Hyun Seo KANG, Keo Sik KIM, Sung Chang KIM, Young Sun KIM, Jeong Eun KIM, Hee Seung KIM, Ji Hyoung RYU, Hyoung Jun PARK, Dong Hoon SON, Chan Il YEO
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Publication number: 20180067299Abstract: 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: ApplicationFiled: May 31, 2017Publication date: March 8, 2018Applicant: 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
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Patent number: 9857535Abstract: A method of packaging a multi-channel optical receiver module and a package of the same are provided. The method includes installing a first lens on a sub-mount; aligning an optical block including a plurality of filters on the sub-mount; installing the aligned optical block on the sub-mount; aligning a second lens on the sub-mount; installing the aligned second lens on the sub-mount; and coupling the sub-mount to a TO-stem. The aligning of the optical block transmits light incident through the first lens to the plurality of filters, transmits light beams transmitted through the plurality of filters to an object lens, monitors positions of and intervals between the light beams transmitted through an infrared (IR) camera and aligns the optical block so that the intervals between the light beams transmitted through the plurality of filters are identical.Type: GrantFiled: April 11, 2016Date of Patent: January 2, 2018Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Young Soon Heo, Hyun Seo Kang, Keo Sik Kim, Jeong Eun Kim, Ji Hyoung Ryu, Hyoung Jun Park
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Patent number: 9846286Abstract: Provided herein is an optical module including: an optical receptacle including a first lens and a second lens; a lens module including a lens unit facing the second lens of the optical receptacle; and an optical element configured to receive a beam emitted from the lens module or form a beam to be emitted to the lens module. A horizontal length and a vertical length of a cross-section of the first lens may differ from each other, and a horizontal length and a vertical length of a cross-section of the second lens may differ from each other.Type: GrantFiled: November 25, 2015Date of Patent: December 19, 2017Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Kwon Seob Lim, Hyoung Jun Park, Hyun Seo Kang, Jai Sang Koh, Keo Sik Kim, Young Sun Kim, Jeong Eun Kim, Ji Hyoung Ryu, Eun Kyoung Jeon, Young Soon Heo
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Patent number: 9768866Abstract: An optical wavelength and optical power measurement device is provided. The optical wavelength and optical power measurement device includes: an input unit in which an optical connector that emits communication light of an infrared ray wavelength region is connected; a filter unit that separates the communication light of an infrared ray wavelength region and light of a visible ray wavelength region; a sensing unit that communicates with a path of the communication light of an infrared ray wavelength region of the filter unit and in which a signal of the communication light of an infrared ray wavelength region is input; and an inspection unit that communicates with a path of the light of the visible ray wavelength region of the filter unit and that inspects a surface of the optical connector.Type: GrantFiled: July 10, 2015Date of Patent: September 19, 2017Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: hyoungjun Park, Kwon-Seob Lim, Hyun Seo Kang, Jaisang Koh, Keo-Sik Kim, Young Sun Kim, Jeong Eun Kim, Ji Hyoung Ryu, Eun Kyoung Jeon
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Patent number: 9768583Abstract: Provided herein is a multi-channel optical module including a plurality of laser diodes emitting light with different wavelengths, a thermoelectric cooling device including the plurality of laser diodes, a TO-can including the thermoelectric cooling device, and a holder combined with the TO-can and including a plurality of optical lenses focusing the light with different wavelengths and a multiplexer gathering focused light into a single optical fiber, wherein the holder has a shape in which the TO-can is cut along an axis of a path of the light with different wavelengths for active alignment of the plurality of optical lenses.Type: GrantFiled: July 14, 2016Date of Patent: September 19, 2017Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Jeong Eun Kim, Hyun Seo Kang, Keo Sik Kim, Ji Hyoung Ryu, Hyoung Jun Park, Kwon Seob Lim, Young Soon Heo
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Patent number: 9759876Abstract: A multi-channel optical module includes a stem configured to allow an optical active element transmitting and receiving an optical signal to be installed thereon, an optical module frame connected to the stem and configured to have an optical element forming an optical path corresponding to the optical active element, and an external housing configured to house the optical module frame therein and coupled to the stem, wherein the optical element includes a lens and a filter unit disposed in the optical path and an optical waveguide element to which an optical fiber is connected.Type: GrantFiled: April 5, 2016Date of Patent: September 12, 2017Assignee: Electronics and Telecommunications Research InstituteInventors: Jeong Eun Kim, Hyun Seo Kang, Hyoungjun Park, Keo-Sik Kim, Ji Hyoung Ryu, Eun Kyoung Jeon, Young Soon Heo
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Publication number: 20170205254Abstract: Provided is an apparatus for generating an incident light, the apparatus including an input light generator configured to generate an input light by changing an intensity of an operational signal at intervals of a predetermined period, a filter configured to change a wavelength of the input light through an electrical change, and a light amplifier configured to amplify an intensity of the input light having the changed wavelength to emit an incident light.Type: ApplicationFiled: January 17, 2017Publication date: July 20, 2017Inventors: Hyoung Jun PARK, Hyun Seo KANG, Keo Sik KIM, Young Sun KIM, Jeong Eun KIM, Ji Hyoung RYU, Young Soon HEO
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Publication number: 20170146755Abstract: A multi-channel optical module includes a stem configured to allow an optical active element transmitting and receiving an optical signal to be installed thereon, an optical module frame connected to the stem and configured to have an optical element forming an optical path corresponding to the optical active element, and an external housing configured to house the optical module frame therein and coupled to the stem, wherein the optical element includes a lens and a filter unit disposed in the optical path and an optical waveguide element to which an optical fiber is connected.Type: ApplicationFiled: April 5, 2016Publication date: May 25, 2017Inventors: Jeong Eun KIM, Hyun Seo KANG, Hyoungjun PARK, Keo-Sik KIM, Ji Hyoung RYU, Eun Kyoung JEON, Young Soon HEO
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Publication number: 20170131557Abstract: 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: ApplicationFiled: April 20, 2016Publication date: May 11, 2017Inventors: Jeong Eun KIM, Hyun Seo KANG, Keo-Sik KIM, Ji Hyoung RYU, Hyoungjun PARK, Young Soon HEO
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Publication number: 20170123158Abstract: A method of packaging a multi-channel optical receiver module and a package of the same are provided. The method includes installing a first lens on a sub-mount; aligning an optical block including a plurality of filters on the sub-mount; installing the aligned optical block on the sub-mount; aligning a second lens on the sub-mount; installing the aligned second lens on the sub-mount; and coupling the sub-mount to a TO-stem. The aligning of the optical block transmits light incident through the first lens to the plurality of filters, transmits light beams transmitted through the plurality of filters to an object lens, monitors positions of and intervals between the light beams transmitted through an infrared (IR) camera and aligns the optical block so that the intervals between the light beams transmitted through the plurality of filters are identical.Type: ApplicationFiled: April 11, 2016Publication date: May 4, 2017Inventors: Young Soon HEO, Hyun Seo KANG, Keo Sik KIM, Jeong Eun KIM, Ji Hyoung RYU, Hyoung Jun PARK
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Publication number: 20170125972Abstract: Provided herein is a multi-channel optical module including a plurality of laser diodes emitting light with different wavelengths, a thermoelectric cooling device including the plurality of laser diodes, a TO-can including the thermoelectric cooling device, and a holder combined with the TO-can and including a plurality of optical lenses focusing the light with different wavelengths and a multiplexer gathering focused light into a single optical fiber, wherein the holder has a shape in which the TO-can is cut along an axis of a path of the light with different wavelengths for active alignment of the plurality of optical lenses.Type: ApplicationFiled: July 14, 2016Publication date: May 4, 2017Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Jeong Eun KIM, Hyun Seo KANG, Keo Sik KIM, Ji Hyoung RYU, Hyoung Jun PARK, Kwon Seob LIM, Young Soon HEO
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Patent number: 9541714Abstract: Disclosed are a bidirectional optical transceiver module and a method of aligning the same. The bidirectional optical transceiver module includes: a package having on one side a cavity; a platform mounted on the package; a transmitter which generates output light; a holder which includes the horizontal portion having the through-hole and disposed on the package to cover the cavity, and the vertical portion which has the inclined surface on one side and the connection hole connected to the through-hole; a receiver which generates an electric signal that corresponds to input light incident into the cavity; and a WDM filter that delivers the output light and the input light.Type: GrantFiled: June 18, 2015Date of Patent: January 10, 2017Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Kwon Seob Lim, Hyun Seo Kang, Keo Sik Kim, Young Sun Kim, Jae Hoon Kim, Hyoung Jun Park, Eun Kyoung Jeon, Young Soon Heo
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Patent number: 9534889Abstract: Provided is an apparatus that measures a thickness of a coating by selecting a wavelength of a laser based on a color of the coating using a contactless method using a photoacoustic effect and an interferometer, the apparatus including a pulsed laser source to irradiate a pulsed laser beam toward the coating, a continuous wave (CW) laser source to irradiate a CW laser beam toward the coating, a detector to detect an optical interference signal corresponding to the CW laser beam, and a signal processor to process the optical interference signal to calculate a thickness of the coating.Type: GrantFiled: October 3, 2014Date of Patent: January 3, 2017Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Jeong Eun Kim, Hyun Seo Kang, Hyoung Jun Park, Young Soon Heo, Keo Sik Kim, Eun Kyoung Jeon, Kwon Seob Lim, Young Sun Kim
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Publication number: 20160154195Abstract: Provided herein is an optical module including: an optical receptacle including a first lens and a second lens; a lens module including a lens unit facing the second lens of the optical receptacle; and an optical element configured to receive a beam emitted from the lens module or form a beam to be emitted to the lens module. A horizontal length and a vertical length of a cross-section of the first lens may differ from each other, and a horizontal length and a vertical length of a cross-section of the second lens may differ from each other.Type: ApplicationFiled: November 25, 2015Publication date: June 2, 2016Inventors: Kwon Seob LIM, Hyoung Jun PARK, Hyun Seo KANG, Jai Sang KOH, Keo Sik KIM, Young Sun KIM, Jeong Eun KIM, Ji Hyoung RYU, Eun Kyoung JEON, Young Soon HEO
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Publication number: 20160146663Abstract: An optical wavelength and optical power measurement device is provided. The optical wavelength and optical power measurement device includes: an input unit in which an optical connector that emits communication light of an infrared ray wavelength region is connected; a filter unit that separates the communication light of an infrared ray wavelength region and light of a visible ray wavelength region; a sensing unit that communicates with a path of the communication light of an infrared ray wavelength region of the filter unit and in which a signal of the communication light of an infrared ray wavelength region is input; and an inspection unit that communicates with a path of the light of the visible ray wavelength region of the filter unit and that inspects a surface of the optical connector.Type: ApplicationFiled: July 10, 2015Publication date: May 26, 2016Inventors: Hyoungjun Park, Kwon-Seob Lim, Hyun Seo Kang, Jaisang Koh, Keo-Sik Kim, Young Sun Kim, Jeong Eun Kim, Ji Hyoung Ryu, Eun Kyoung Jeon