Patents by Inventor Sun-tak Park

Sun-tak 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).

  • 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
  • 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
  • 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: 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
  • Patent number: 9662197
    Abstract: Provided herein is an artificial muscle capable of being miniaturized, realizing precision movement, and performing selective relaxation/contraction deformation according to the power output necessary in the muscle, the muscle including a first operation unit that includes electro-active polymer where relaxation-deformation occurs based on electric energy being applied; a heating unit that generates heat energy based on the electric being applied; a second operation unit that has a yarn structure and where contraction-deformation occurs based on the heat energy generated in the heating unit; and a control unit that applies electric energy to the first operation unit and the heating unit.
    Type: Grant
    Filed: August 4, 2015
    Date of Patent: May 30, 2017
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESERACH INSTITUTE
    Inventors: Sung Ryul Yun, Ki Uk Kyung, Sae Kwang Nam, Bong Je Park, Sun Tak Park
  • Patent number: 9638928
    Abstract: An active diffuser for reducing a speckle in accordance with an embodiment of the present invention includes: an electroactive polymer film having at least one or more scattering patterns; a first transparent electrode coated on one surface of the electroactive polymer film; and a second transparent electrode coated on the other surface of the electroactive polymer film, and a shape of the scattering pattern of the electroactive polymer film is varied by voltage applied through the first transparent electrode and the second transparent electrode.
    Type: Grant
    Filed: January 30, 2014
    Date of Patent: May 2, 2017
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUE
    Inventors: Sun-Tak Park, Bong-Je Park, Ki-Uk Kyung, Sung-Ryul Yun, Sae-Kwang Nam
  • Patent number: 9612362
    Abstract: Provided herein are an optical zoom lens capable of actively zooming in and/or out and an apparatus using the same. The optical zoom lens may include an electro-active polymer layer configured to be deformable in response to an electric signal; a lens structure formed over the electro-active polymer layer; a first electrode formed on an upper surface of the electro-active polymer layer; a second electrode formed on a lower surface of the electro-active polymer layer; and a control circuit unit configured to apply a voltage to the first electrode and the second electrode. The optical zoom lens, having a structure of a combination of the polymer lens structure and the electro-active polymer actuator, is able to embody active variation in position of the polymer lens structure body and control therefor using deformation of the electro-active polymer layer by an electric signal.
    Type: Grant
    Filed: January 26, 2016
    Date of Patent: April 4, 2017
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Sung Ryul Yun, Ki Uk Kyung, Sun Tak Park, Sae Kwang Nam, Bong Je Park
  • Publication number: 20170068111
    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: July 6, 2016
    Publication date: March 9, 2017
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTIT UTE
    Inventors: Ki-Uk KYUNG, Bong Je PARK, Sang-Youn KIM, Sae Kwang NAM, Sun Tak PARK, Sung Ryul YUN
  • Publication number: 20170059812
    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: Application
    Filed: June 20, 2016
    Publication date: March 2, 2017
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Ki-Uk KYUNG, Sae Kwang NAM, Bong Je PARK, Sun Tak PARK, Sung Ryul YUN
  • Publication number: 20170054929
    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: Application
    Filed: May 25, 2016
    Publication date: February 23, 2017
    Inventors: Sun Tak PARK, Ki-Uk KYUNG, Sae Kwang NAM, Bong Je PARK, Seung Koo PARK, Sung Ryul YUN
  • Publication number: 20160266376
    Abstract: Provided herein are a reflective lens capable of changing a focal length and an optical system using the same. An active reflective lens according to an embodiment includes: a lens unit including material that is deformable in response to an electric signal; a support unit configured to support the lens unit; a base unit formed below the support unit; a first electrode formed on the lens unit; and a second electrode formed on the base unit. The distance between the first electrode and the second electrode is determined depending on a shape of an upper surface of the base unit, and the distance between the first electrode and the second electrode varies depending on regions of the lens unit.
    Type: Application
    Filed: March 9, 2016
    Publication date: September 15, 2016
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTIT UTE
    Inventors: Sae Kwang NAM, Sun Tak PARK, Ki Uk KYUNG, Bong Je PARK, Sung Ryul YUN