Patents by Inventor Bong Je Park

Bong Je Park 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: 20210198439
    Abstract: An embodiment of the inventive concept provides a method of manufacturing a polymer film, the method including: preparing a first copolymer containing a first functional group; preparing a second copolymer containing a second functional group; preparing a first compound containing a third functional group; and performing a cross-linking reaction by mixing the first copolymer, the second copolymer, and the first compound, wherein the cross-linking reaction includes a reaction of the first functional group and the second functional group and a reaction of the second functional group and the third functional group, the first compound includes a polar group and any one group selected from among a vinyl group, an aryl group, and an acrylate group, and the third functional group has reactivity with respect to the second functional group, but does not have reactivity with respect to the first functional group.
    Type: Application
    Filed: May 29, 2020
    Publication date: July 1, 2021
    Inventors: Seung Koo PARK, Bong Je PARK, Mee Jeong CHOI, Suntak PARK, Eun Jin SHIN, Sungryul YUN, Jae Woong YOON
  • Patent number: 11041055
    Abstract: Provided are a composition for a light transmittance control film, and a light transmittance control film. According to the inventive concept, the light transmittance control film includes a matrix part including a copolymer and a polymer chain which is grafted to the copolymer; and a dispersed part including a polymer derived from a first monomer, and are provided in the matrix part, wherein the polymer chain is derived from the first monomer, first light transmittance is shown while external force is applied, and second light transmittance which is greater than the first light transmittance may be shown after the external force is removed.
    Type: Grant
    Filed: April 19, 2018
    Date of Patent: June 22, 2021
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Seung Koo Park, Sung Ryul Yun, Ki Uk Kyung, Mi Jeong Choi, Bong Je Park, Suntak Park, Saekwang Nam, Seongcheol Mun, Eun Jin Shin, Jeong Mook Lim
  • Patent number: 10996432
    Abstract: A reflective active variable lens includes an upper electrode, a lower electrode disposed in parallel to the upper electrode, a deformation part disposed between the upper electrode and the lower electrode, a reflective part disposed on the upper electrode, and a support part disposed to surround the deformation part. Here, the deformation part and the support part are connected to each other to provide a single structure, the deformation part is expanded from an initial shape when an electric field is formed between the upper electrode and the lower electrode, and the expanded deformation part is contracted when the electric field is removed and restored to the initial shape.
    Type: Grant
    Filed: December 10, 2018
    Date of Patent: May 4, 2021
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Suntak Park, Bong Je Park, Ki-Uk Kyung, Seung Koo Park, Sung Ryul YuN, Seongcheol Mun, Jeong Muk Lim
  • Publication number: 20200209613
    Abstract: Provided is focal variable device system including a focus variable element including an absorbing layer, and an adjustable light source configured to cause an adjustable light to enter the focus variable element. The absorbing layer includes a thermal expansion material that absorbs the adjustable light and thermally expands.
    Type: Application
    Filed: December 19, 2019
    Publication date: July 2, 2020
    Inventors: Suntak PARK, Bong Je PARK, Seung Koo PARK, Jae Woong YOON, Eun Jin SHIN
  • Patent number: 10649116
    Abstract: An auto focusing lens includes an active lens including a lens body including electroactive polymer and a transparent electrode at least partially coated on a surface of the lens body, and a controller controlling the focus of the active lens by applying a voltage to the transparent electrode.
    Type: Grant
    Filed: May 17, 2018
    Date of Patent: May 12, 2020
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Ki-Uk Kyung, Bong Je Park, Sang-Youn Kim, Sae Kwang Nam, Sun Tak Park, Sung Ryul Yun
  • Publication number: 20200032013
    Abstract: Provided are a composition for a light transmittance control film, and a light transmittance control film. According to the inventive concept, the light transmittance control film includes a matrix part including a copolymer and a polymer chain which is grafted to the copolymer; and a dispersed part including a polymer derived from a first monomer, and are provided in the matrix part, wherein the polymer chain is derived from the first monomer, first light transmittance is shown while external force is applied, and second light transmittance which is greater than the first light transmittance may be shown after the external force is removed.
    Type: Application
    Filed: April 19, 2018
    Publication date: January 30, 2020
    Inventors: Seung Koo PARK, Sung Ryul YUN, Ki Uk KYUNG, Mi Jeong CHOI, Bong Je PARK, Suntak PARK, Saekwang NAM, Seongcheol MUN, Eun Jin SHIN, Jeong Mook LIM
  • Patent number: 10495843
    Abstract: The present disclosure relates to an imaging apparatus and a method for operating the same, and more particularly, to a high-speed lens moving technique capable of effective multi-view angle and multi-focus images for a short period of time and an image photographing and sorting technique according the high-speed lens moving technique. Accordingly, the movement of lenses is performed using a new technique without applying the existing slow lens moving technique performed using a motor, etc., so that it is possible to acquire multi-view angle and multi-focus images using one imaging apparatus for a short period of time.
    Type: Grant
    Filed: June 20, 2016
    Date of Patent: December 3, 2019
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Ki-Uk Kyung, Sae Kwang Nam, Bong Je Park, Sun Tak Park, Sung Ryul Yun
  • Patent number: 10338280
    Abstract: Disclosed is a varifocal lens module. A varifocal lens module according to an embodiment includes a lens formed of a flexible and transparent material and having a focal length varying according to a variable shape thereof; at least one driving part expanded or contracted in response to an electric signal; and at least one structural body configured to physically or chemically connect the lens and each driving part.
    Type: Grant
    Filed: July 11, 2017
    Date of Patent: July 2, 2019
    Assignee: ELECTRONICS & TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Ki Uk Kyung, Sae Kwang Nam, Sung Ryul Yun, Bong Je Park, Sun Tak Park, Seung Koo Park
  • Publication number: 20190196149
    Abstract: A reflective active variable lens includes an upper electrode, a lower electrode disposed in parallel to the upper electrode, a deformation part disposed between the upper electrode and the lower electrode, a reflective part disposed on the upper electrode, and a support part disposed to surround the deformation part. Here, the deformation part and the support part are connected to each other to provide a single structure, the deformation part is expanded from an initial shape when an electric field is formed between the upper electrode and the lower electrode, and the expanded deformation part is contracted when the electric field is removed and restored to the initial shape.
    Type: Application
    Filed: December 10, 2018
    Publication date: June 27, 2019
    Inventors: Suntak PARK, Bong Je PARK, Ki-Uk KYUNG, Seung Koo PARK, Sung Ryul YUN, Seongcheol MUN, Jeong Muk LIM
  • Patent number: 10232133
    Abstract: Provided herein is an endoscope comprising an end portion configured to take an image; a controller configured to control the end portion and process the image input by the end portion; and a connector configured to connect the end portion and the controller, wherein the end portion is provided with at least one lens apparatus surrounding an exterior surface of the end portion, the lens apparatus being adapted to be brought to various focuses, thereby providing an effect of obtaining images from various viewpoints at a short period of time, and when used as an endoscope, obviating the need to move the multi-view and multi-focused variable lens at the end portion, making it possible to reduce the thickness of the connector that connects the end portion of the endoscope with the controller.
    Type: Grant
    Filed: January 29, 2015
    Date of Patent: March 19, 2019
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Sae Kwang Nam, Ki Uk Kyung, Bong Je Park, Sun Tak Park, Sung Ryul Yun
  • Publication number: 20180267215
    Abstract: An auto focusing lens includes an active lens including a lens body including electroactive polymer and a transparent electrode at least partially coated on a surface of the lens body, and a controller controlling the focus of the active lens by applying a voltage to the transparent electrode.
    Type: Application
    Filed: May 17, 2018
    Publication date: September 20, 2018
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Ki-Uk KYUNG, Bong Je PARK, Sang-Youn KIM, Sae Kwang NAM, Sun Tak PARK, Sung Ryul YUN
  • Patent number: 10009546
    Abstract: There is provided an optical imaging device including a flexible image sensor and an actuator that expands or contracts the flexible image sensor on a two-dimensional plane. It is possible to minimize distortion aberration and control a viewing angle and magnification.
    Type: Grant
    Filed: June 15, 2016
    Date of Patent: June 26, 2018
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Sun Tak Park, Ki Uk Kyung, Sae Kwang Nam, Bong Je Park, Seung Koo Park, Sung Ryul Yun
  • Patent number: 10007034
    Abstract: An auto focusing lens includes an active lens including a lens body including electroactive polymer and a transparent electrode at least partially coated on a surface of the lens body, and a controller controlling the focus of the active lens by applying a voltage to the transparent electrode.
    Type: Grant
    Filed: July 6, 2016
    Date of Patent: June 26, 2018
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Ki-Uk Kyung, Bong Je Park, Sang-Youn Kim, Sae Kwang Nam, Sun Tak Park, Sung Ryul Yun
  • Patent number: 9996199
    Abstract: Provided is a thin film type actuator having multi-operation points, capable of various feels of touch or sounds. The film type actuator includes an upper plate and a lower plate, formed of a single plate. Between the upper plate and the lower plate, pairs of electrode parts capable of attracting one another via an electrostatic force. Since each of the pairs of electrode parts functions as an operation point and the upper plate and the lower plate are formed of the single plate, movements of the respective operation points in such a way that a new physical movement different from an original individual movement is generated to generate a haptic feel or a sound. It is possible to generate various haptic feels or sounds by modulating and combining amplitudes and frequencies of the respective operation points.
    Type: Grant
    Filed: April 19, 2013
    Date of Patent: June 12, 2018
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Suntak Park, Ki-Uk Kyung, Sung Ryul Yun, Young Sung Kim, Jong-uk Lee, Bong Je Park
  • Patent number: 9992433
    Abstract: There are provided an image processing apparatus and a control method thereof. An image processing apparatus includes an image sensor for acquiring a target image, an image processing module for performing focusing on a specific area of the acquired target image and determining a focal surface of the target image on the basis of the performed focusing, and a drive control module for controlling the curvature of the image sensor, based on the determined focal surface.
    Type: Grant
    Filed: May 25, 2016
    Date of Patent: June 5, 2018
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Sun Tak Park, Ki-Uk Kyung, Sae Kwang Nam, Bong Je Park, Seung Koo Park, Sung Ryul Yun
  • Patent number: 9885874
    Abstract: A microlens array and a method for fabricating thereof are provided. The microlens array of the present invention comprises a lens structure part formed by bistable dielectric polymer thin film; first and second electrode parts each formed on the upper surface and the bottom surface of the lens structure part to apply voltage for shape changes of the lens structure part; a circuit part applying heat to the dielectric polymer thin film to change the property of the dielectric polymer thin film to be soft; and a base part formed on the bottom surface of the second electrode in predetermined intervals. The method further comprises a hydraulic part to apply predetermined voltage to the bottom surface of the lens structure part. The microlens array is thus able to change optical properties by deform the shape of a transparent dielectric polymer thin film having bistablity to various sizes of lens shapes by the purposes.
    Type: Grant
    Filed: April 7, 2014
    Date of Patent: February 6, 2018
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Sung-Ryul Yun, Ki-Uk Kyung, Sun-Tak Park, Bong-Je Park, Sae-Kwang Nam
  • Publication number: 20180017718
    Abstract: Disclosed is a varifocal lens module. A varifocal lens module according to an embodiment includes a lens formed of a flexible and transparent material and having a focal length varying according to a variable shape thereof; at least one driving part expanded or contracted in response to an electric signal; and at least one structural body configured to physically or chemically connect the lens and each driving part.
    Type: Application
    Filed: July 11, 2017
    Publication date: January 18, 2018
    Inventors: KI UK KYUNG, SAE KWANG NAM, SUNG RYUL YUN, BONG JE PARK, SUN TAK PARK, SEUNG KOO PARK
  • Patent number: 9841621
    Abstract: Provided herein a display apparatus including a display panel including a first surface for displaying information and a second surface disposed opposite to the first surface, and where a curvature is formed as a physical force is applied; and a curvature changing unit bonded to at least a portion of the second surface, wherein the curvature changing unit includes a first actuator unit configured to curve the display panel when a voltage is applied and a fixing unit configured to fixate the first actuator unit.
    Type: Grant
    Filed: May 13, 2015
    Date of Patent: December 12, 2017
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Sun Tak Park, Ki Uk Kyung, Sung Ryul Yun, Sae Kwang Nam, Bong Je Park
  • Patent number: 9746587
    Abstract: Disclosed herein is a shape-variable optical element including: a shape-variable lens; a first electrode unit configured to be connected to the shape-variable lens; a second electrode unit configured to face the first electrode unit; and a deformation part configured to be disposed between the first electrode unit and the second electrode unit.
    Type: Grant
    Filed: June 26, 2014
    Date of Patent: August 29, 2017
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Ki-Uk Kyung, Sung-Ryul Yun, Sun-Tak Park, Bong-Je Park, Sae-Kwang Nam
  • Publication number: 20170214859
    Abstract: There is provided an optical imaging device including a flexible image sensor and an actuator that expands or contracts the flexible image sensor on a two-dimensional plane. It is possible to minimize distortion aberration and control a viewing angle and magnification.
    Type: Application
    Filed: June 15, 2016
    Publication date: July 27, 2017
    Inventors: Sun Tak PARK, Ki Uk KYUNG, Sae Kwang NAM, Bong Je PARK, Seung Koo PARK, Sung Ryul YUN