Patents by Inventor Byoung-Woon Ahn

Byoung-Woon Ahn 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: 20230324433
    Abstract: The present invention relates to a method for measuring, by a measurement device, characteristics of a surface of an object to be measured. The method includes an approach step of positioning the tip to come into contact with a specific position of the surface of the object to be measured and a lift step of separating the contacted tip from the surface of the object are repeatedly performed with respect to a plurality of positions of the surface of the object. The tip is controlled to vibrate in a portion or the entirety of the approach step and the lift step, and a movement characteristic of the tip is controlled according to a change of the vibration characteristic of the tip.
    Type: Application
    Filed: September 24, 2021
    Publication date: October 12, 2023
    Applicant: PARK SYSTEMS CORP.
    Inventors: Ahjin JO, Seung Hun BAIK, Seonghun YUN, Byoung-Woon AHN, Sang-il PARK
  • Publication number: 20230324434
    Abstract: Disclosed is a method for measuring the characteristics of the surface of the object to be measured by means of a measuring apparatus for measuring the characteristics of the surface of the object to be measured by measuring an interaction between a tip and the surface of the object to be measured. The method, according to an embodiment of the present invention is a method for measuring the characteristics of the surface of the object to be measured by repeating an approaching operation of bringing the tip close to and in contact with the surface of the object to be measured and a lifting operation. The approaching operation is performed by controlling such that a characteristic value reaches a set point, and the set point is variably set on the basis of the state of the point on which the approaching operation is performed.
    Type: Application
    Filed: September 24, 2021
    Publication date: October 12, 2023
    Applicant: PARK SYSTEMS CORP.
    Inventors: Ahjin JO, Seung Hun BAIK, Seonghun YUN, Byoung-Woon AHN, Sang-il PARK
  • Publication number: 20230184808
    Abstract: The present disclosure provides a measuring method for measuring heat distribution of a specific space using an SThM probe, and a method and device for detecting a beam spot of a light source. The method according to an embodiment of the present disclosure is the measuring method for measuring heat distribution of a specific space, the measuring method includes: linearly moving a SThM probe that may measure a temperature change in the specific space; and calculating heat distribution of the specific space using continuous temperature change values obtained from the SThM probe during the moving step. According to the measuring method, and the method and device for detecting a beam spot of a light source, it is possible to map temperature distribution in a small space using a SThM probe and it is possible to accurately detect a beam spot using the temperature distribution.
    Type: Application
    Filed: January 30, 2023
    Publication date: June 15, 2023
    Applicant: PARK SYSTEMS CORP.
    Inventors: Sang-il PARK, Byoung-Woon AHN, Ahjin JO, Soobong Choi
  • Patent number: 11619649
    Abstract: An atomic force microscope equipped with an optical measurement device is disclosed. An atomic force microscope equipped with an optical measurement device which acquires characteristics of a surface of a measurement target by moving a probe along the surface of the measurement target while scanning the measurement target on an XY plane using an XY scanner for supporting the measurement target, includes: an optical measurement device including a lighting unit configured to allow light to enter the surface of the measurement target, and a detection unit configured to detect light reflected by the surface of the measurement target, the optical measurement device being configured to acquire the characteristics of the surface of the measurement target by the scanning by the XY scanner; and a control device configured to control an operation of the atomic force microscope and an operation of the optical measurement device.
    Type: Grant
    Filed: November 26, 2021
    Date of Patent: April 4, 2023
    Assignee: PARK SYSTEMS CORP.
    Inventors: Sang-il Park, Byoung-Woon Ahn, Seung-Ho Han, Sang-Joon Cho
  • Patent number: 11598788
    Abstract: The present disclosure provides a measuring method for measuring heat distribution of a specific space using an SThM probe, and a method and device for detecting a beam spot of a light source. The method according to an embodiment of the present disclosure is the measuring method for measuring heat distribution of a specific space, the measuring method includes: linearly moving a SThM probe that may measure a temperature change in the specific space; and calculating heat distribution of the specific space using continuous temperature change values obtained from the SThM probe during the moving step. According to the measuring method, and the method and device for detecting a beam spot of a light source, it is possible to map temperature distribution in a small space using a SThM probe and it is possible to accurately detect a beam spot using the temperature distribution.
    Type: Grant
    Filed: June 1, 2021
    Date of Patent: March 7, 2023
    Assignee: PARK SYSTEMS CORP.
    Inventors: Sang-il Park, Byoung-Woon Ahn, Ahjin Jo, Soobong Choi
  • Publication number: 20230046236
    Abstract: The present invention relates to a method for acquiring a surface characteristic of a measuring object using a tilted tip, an atomic force microscope for carrying out the method, and a computer program stored on a storage medium for carrying out the method, capable of acquiring an image deeply to the inside of an undercut structure and easily separating a tip from the inside of the undercut structure. The method according to an exemplary embodiment of the present invention is a method for acquiring a surface characteristic of a measuring object using a measuring device including a tip interacting with the surface of the measuring object.
    Type: Application
    Filed: December 18, 2020
    Publication date: February 16, 2023
    Applicant: PARK SYSTEMS CORP.
    Inventors: Ahjin JO, Sang-il PARK, Byoung-Woon AHN, Seung Hun BAIK
  • Publication number: 20210373046
    Abstract: The present disclosure provides a measuring method for measuring heat distribution of a specific space using an SThM probe, and a method and device for detecting a beam spot of a light source. The method according to an embodiment of the present disclosure is the measuring method for measuring heat distribution of a specific space, the measuring method includes: linearly moving a SThM probe that may measure a temperature change in the specific space; and calculating heat distribution of the specific space using continuous temperature change values obtained from the SThM probe during the moving step. According to the measuring method, and the method and device for detecting a beam spot of a light source, it is possible to map temperature distribution in a small space using a SThM probe and it is possible to accurately detect a beam spot using the temperature distribution.
    Type: Application
    Filed: June 1, 2021
    Publication date: December 2, 2021
    Inventors: Sang-il PARK, Byoung-Woon AHN, Ahjin JO, Soobong Choi
  • Patent number: 9645168
    Abstract: Provided are a head having improved usability by limiting a movement range of a laser spot and an atomic force microscope having the same. A head according to an exemplary embodiment of the present disclosure is a head measuring bending of a cantilever by using a laser beam reflected on the surface of the cantilever in order to acquire information on a sample surface by using a tip of the cantilever. The head includes: a spot moving means configured to move a laser spot so as to position the laser spot on the surface of the cantilever; and a movement limiting means configured to limit a movement range of the laser spot moved by the spot moving means in a predetermined range.
    Type: Grant
    Filed: December 23, 2015
    Date of Patent: May 9, 2017
    Assignee: PARK SYSTEMS CORP.
    Inventors: Sang-il Park, Dongryul Kim, Byoung Woon Ahn, Sang Han Chung
  • Publication number: 20160187373
    Abstract: Provided are a head having improved usability by limiting a movement range of a laser spot and an atomic force microscope having the same. A head according to an exemplary embodiment of the present disclosure is a head measuring bending of a cantilever by using a laser beam reflected on the surface of the cantilever in order to acquire information on a sample surface by using a tip of the cantilever. The head includes: a spot moving means configured to move a laser spot so as to position the laser spot on the surface of the cantilever; and a movement limiting means configured to limit a movement range of the laser spot moved by the spot moving means in a predetermined range.
    Type: Application
    Filed: December 23, 2015
    Publication date: June 30, 2016
    Inventors: Sang-iI Park, Dongryul Kim, Byoung Woon Ahn, Sang Han Chung
  • Patent number: 8209766
    Abstract: A scanning probe microscope tilts the scanning direction of a z-scanner by a precise amount and with high repeatability using a movable assembly that rotates the scanning direction of the z-scanner with respect to the sample plane. The movable assembly is moved along a curved guide by a rack-and-pinion drive system and has grooves that engage with corresponding ceramic balls formed on a stationary frame to precisely position the movable assembly at predefined locations along the curved guide. The grooves are urged against the ceramic balls via a spring force and, prior to movement of the movable assembly, a pneumatic force is applied to overcome the spring force and disengage the grooves from the ceramic balls.
    Type: Grant
    Filed: February 12, 2010
    Date of Patent: June 26, 2012
    Assignee: Park Systems Corp.
    Inventors: Sang-il Park, Sang Han Chung, Byoung-Woon Ahn
  • Publication number: 20100218285
    Abstract: A scanning probe microscope images a surface of a sample by scanning the sample along a forward path while collecting data for imaging the surface of the sample, recording an uppermost position of the probe while the sample is scanning along the forward path, and scanning the sample along a return path while the probe is positioned higher than the uppermost position of the probe. The return scanning speed is configured to be higher than the forward scanning speed so that the surface image can be obtained rapidly. Also, the return path tracks the forward path until the beginning of the forward path is reached. In this manner, positioning errors caused by hysteresis in the scanning system can be eliminated.
    Type: Application
    Filed: May 4, 2010
    Publication date: August 26, 2010
    Applicant: Park Systems Corp.
    Inventors: Sang-il PARK, Sang Han CHUNG, Byoung-Woon AHN
  • Publication number: 20100170015
    Abstract: A scanning probe microscope tilts the scanning direction of a z-scanner by a precise amount and with high repeatability using a movable assembly that rotates the scanning direction of the z-scanner with respect to the sample plane. The movable assembly is moved along a curved guide by a rack-and-pinion drive system and has grooves that engage with corresponding ceramic balls formed on a stationary frame to precisely position the movable assembly at predefined locations along the curved guide. The grooves are urged against the ceramic balls via a spring force and, prior to movement of the movable assembly, a pneumatic force is applied to overcome the spring force and disengage the grooves from the ceramic balls.
    Type: Application
    Filed: February 12, 2010
    Publication date: July 1, 2010
    Inventors: Sang-il PARK, Sang Han Chung, Byoung-Woon Ahn