Patents by Inventor Young-soon HEO
Young-soon HEO 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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Publication number: 20160097518Abstract: 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: ApplicationFiled: September 29, 2015Publication date: April 7, 2016Inventors: 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
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Patent number: 9250401Abstract: Multi-channel optical modules are provided. The multi-channel optical module may include a plurality of optical devices receiving or transmitting optical signals, a housing for optically coupling the plurality of optical devices to an optical fiber, at least one optical filter separating or multiplexing the optical signals according to wavelengths of the optical signals between the optical fiber and the plurality of optical devices, and at least one filter holder protruding into an inside of the housing. The optical filter may be mounted on the filter holder to align optical paths between the optical fiber and the optical devices.Type: GrantFiled: August 14, 2012Date of Patent: February 2, 2016Assignee: Electronics and Telecommunications Research InstituteInventors: Kwon-Seob Lim, Hyun Seo Kang, Young Sun Kim, Young Soon Heo, Hyoung Jun Park, In Hee Shin
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Publication number: 20150372759Abstract: 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: ApplicationFiled: June 18, 2015Publication date: December 24, 2015Applicant: 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: 9129882Abstract: Provided is a method of fabricating a graphene nano device. The method includes forming a first metal mask pattern on a substrate on which a graphene layer is formed, and forming a graphene pattern by performing an etching process on the graphene layer using the first metal mask pattern as an etching mask. The forming of the first metal mask pattern includes forming a first adhesive layer on the graphene layer, disposing the first metal mask pattern prepared in advance on the first adhesive layer, and heating the first adhesive layer to attach the first metal mask pattern on the substrate.Type: GrantFiled: September 29, 2014Date of Patent: September 8, 2015Assignee: Electronics and Telecommunications Research InstituteInventors: Eun Kyoung Jeon, Hyun Seo Kang, Kwon-Seob Lim, Hyoung Jun Park, Keo-Sik Kim, Jeong Eun Kim, Young Sun Kim, Young Soon Heo
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Publication number: 20150214305Abstract: Provided is a method of fabricating a graphene nano device. The method includes forming a first metal mask pattern on a substrate on which a graphene layer is formed, and forming a graphene pattern by performing an etching process on the graphene layer using the first metal mask pattern as an etching mask. The forming of the first metal mask pattern includes forming a first adhesive layer on the graphene layer, disposing the first metal mask pattern prepared in advance on the first adhesive layer, and heating the first adhesive layer to attach the first metal mask pattern on the substrate.Type: ApplicationFiled: September 29, 2014Publication date: July 30, 2015Applicant: Electronics and Telecommunications Research InstituteInventors: Eun Kyoung JEON, Hyun Seo KANG, Kwon-Seob LIM, Hyoung Jun PARK, Keo-Sik KIM, Jeong Eun KIM, Young Sun KIM, Young Soon HEO
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Publication number: 20150159997Abstract: 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: ApplicationFiled: October 3, 2014Publication date: June 11, 2015Applicant: 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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Patent number: 9036011Abstract: Provided is an image extraction method of optical phase extraction system. The image extraction method may include checking whether a phase error due to an environmental disturbance of optical fiber occurs by monitoring an output signal obtained by interfering reflection optical signals reflected through two paths. When a phase error occurs, an error is compensated using a phase compensation control method of closed loop type through one of the two paths and an image is extracted by capturing an image of object in a state that the image of object is shifted by the set phase value when a phase error is compensated. According to the inventive concept, a phase error occurring in an optical fiber type interferometer due to an environmental disturbance is minimized or compensated. Also, since an interference image accurately shifted by the phase value set among arbitrary various phase values is obtained through a camera, reliability of three-dimensional phase information being extracted is guaranteed.Type: GrantFiled: June 15, 2012Date of Patent: May 19, 2015Assignee: Electronics and Telecommunications Research InstituteInventors: Hyoung Jun Park, Hyun Seo Kang, Young Sun Kim, Kwon-Seob Lim, In Hee Shin, Young Soon Heo
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Publication number: 20150102802Abstract: An optical fiber current sensor includes a transmitter optical subassembly (TOSA) that is formed in a package of a linear polarizer that applies light from a light source to a sensor coil that is formed with an optical fiber by linearly polarizing, a polarization beam splitter that separates light that is reflected from the sensor coil according to polarization, and a receiver optical subassembly (ROSA) that is formed in a package together with first and second photodetectors that detect separated light according to polarization.Type: ApplicationFiled: February 4, 2014Publication date: April 16, 2015Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Hyoungjun PARK, Young Soon HEO, Kwon-Seob LIM, Keo-Sik KIM, Eun Kyoung JEON, Jeong Eun KIM, Hyun Seo KANG, Young Sun KIM
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Publication number: 20150043166Abstract: The optical transmitter module may include a thermal-electric cooler comprising at least one metal pattern formed on a side of a cooling plate temperature of which is controlled by thermo-electric cooling elements, a laser diode installed in one of the at least one metal pattern, and a monitor photo diode which is installed in another one of the at least one metal pattern and monitors change of light signals emitted from the laser diode. Therefore, since elements are located on the same side of the cooling plate, the optical transmitter module may have a simple structure and an advantage that light signals emitted from the laser diode can be directly coupled to the optical fiber without optical path conversions. Also, since the laser diode is installed with a small gap from thermal-electric elements, the temperature control characteristics of the thermal-electric cooler can be enhanced.Type: ApplicationFiled: August 12, 2014Publication date: February 12, 2015Inventors: Young Soon HEO, Hyun Seo KANG, Keo-Sik KIM, Young Sun KIM, Jeong Eun KIM, Hyoung Jun PARK, Kwon Seob LIM, Eun Kyoung JEON
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Publication number: 20150001196Abstract: 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: ApplicationFiled: June 27, 2014Publication date: January 1, 2015Applicant: 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
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Patent number: 8730578Abstract: A sunlight coupler is provided, the sunlight coupler may include a beam integrator configured to concentrate beams of sunlight, which may be incident from a plurality of optical fibers, in the form of a single beam, a triplet lens focusing the concentrated beam on a specific position, and an optical fiber provided for transmission of the focused sunlight. The optical fiber may be a thermally-diffusion expand core fiber.Type: GrantFiled: March 1, 2013Date of Patent: May 20, 2014Assignee: Electronics and Telecommunications Research InstituteInventors: Young Soon Heo, Hyun Seo Kang, Young Sun Kim, Hyoung Jun Park, Kwon-Seob Lim, Keo-Sik Kim, Eun Kyoung Jeon
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Publication number: 20130108262Abstract: Multi-channel optical modules are provided. The multi-channel optical module may include a plurality of optical devices receiving or transmitting optical signals, a housing for optically coupling the plurality of optical devices to an optical fiber, at least one optical filter separating or multiplexing the optical signals according to wavelengths of the optical signals between the optical fiber and the plurality of optical devices, and at least one filter holder protruding into an inside of the housing. The optical filter may be mounted on the filter holder to align optical paths between the optical fiber and the optical devices.Type: ApplicationFiled: August 14, 2012Publication date: May 2, 2013Applicant: Electronics and Telecommunications Research InstituteInventors: Kwon-Seob LIM, Hyun Seo KANG, Young Sun KIM, Young Soon HEO, Hyoung Jun PARK, In Hee SHIN
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Publication number: 20130084633Abstract: Provided is a Petri dish, which improves or maximizes productivity. The Petri dish includes a dish including a bottom and a side wall, and accommodating a culture solution, and a cover covering an upper portion of the dish. The bottom of the dish includes a support region having a first thickness, and a measurement region having a second thickness smaller than the first thickness.Type: ApplicationFiled: July 26, 2012Publication date: April 4, 2013Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: In Hee SHIN, Hyun Seo Kang, Young Sun Kim, Kwon-Seob Lim, Hyoung Jun Park, Young Soon Heo
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Publication number: 20130033573Abstract: Provided is an image extraction method of optical phase extraction system. The image extraction method may include checking whether a phase error due to an environmental disturbance of optical fiber occurs by monitoring an output signal obtained by interfering reflection optical signals reflected through two paths. When a phase error occurs, an error is compensated using a phase compensation control method of closed loop type through one of the two paths and an image is extracted by capturing an image of object in a state that the image of object is shifted by the set phase value when a phase error is compensated. According to the inventive concept, a phase error occurring in an optical fiber type interferometer due to an environmental disturbance is minimized or compensated. Also, since an interference image accurately shifted by the phase value set among arbitrary various phase values is obtained through a camera, reliability of three-dimensional phase information being extracted is guaranteed.Type: ApplicationFiled: June 15, 2012Publication date: February 7, 2013Applicant: Electronics and Telecommunications Research InstituteInventors: Hyoung Jun PARK, Hyun Seo KANG, Young Sun KIM, Kwon-Seob LIM, In Hee SHIN, Young Soon HEO
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Publication number: 20100103428Abstract: A light signal generating apparatus including an erbium-doped optical fiber is provided. The signal light generating apparatus includes a optical fiber which is a gain medium, a light source to emit pump light, a stabilizing unit to compensate for changes of a mean wavelength of the signal light with respect to temperature change in the optical fiber to thereby stabilize the mean wavelength of the signal light, and an optical coupler to transmit the pump light from the light source to the optical fiber and to output signal light returning from the optical fiber and signal light returning from the optical fiber via the stabilizing unit by which the single light is stabilized. Accordingly, the apparatus can lower the change of the mean wavelength with respect to temperature and lower a pump power required of the pump light source.Type: ApplicationFiled: June 18, 2009Publication date: April 29, 2010Inventors: Young-soon HEO, Chong-hee YU