Patents by Inventor Ja Myoung Koo

Ja Myoung Koo 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).

  • VISION TESTING DEVICE WITH ENHANCED IMAGE CLARITY
    Publication number: 20140232850
    Abstract: The vision testing device with an enhanced image clarity for determining good or bad of a testing object by photographing a testing object assembled or mounted during the component assembly process and comparing the photographed image with a previously inputted target image, comprising: a stage part for fixing or transferring the testing object to a testing location; a lighting part for providing lighting to the testing object located on an upper portion of the stage part; a first camera part for obtaining a 2-dimensional image of the testing object located in a center of the lighting part; a plurality of second camera parts placed on a side section of the first camera part; a plurality of grid pattern irradiating parts placed between cameras of the second camera parts; a vision processing unit for reading the image photographed by the first camera part and the second camera parts and determining good or bad of the testing object; a control unit for controlling the stage part, the grid pattern irradiating par
    Type: Application
    Filed: March 8, 2012
    Publication date: August 21, 2014
    Applicant: MIRTEC CO., LTD.
    Inventors: Chan Wha Park, Sang Min Oh, Sung Hyun Kim, Ja Myoung Koo
  • VISION TESTING DEVICE USING MULTIGRID PATTERN
    Publication number: 20130342677
    Abstract: Provided is a vision testing device using a multigrid pattern for determining good or bad of a testing object by photographing the testing object assembled or mounted during the component assembly process and comparing the photographed image with a previously inputted target image, comprising: a stage part for fixing or transferring the testing object to the testing location; a lighting part for providing lighting to the testing object located on an upper portion of the stage part; a center camera part for obtaining a 2-dimensional image of the testing object located in a center of the lighting part; a irradiating part placed on a side section of the center camera part; a vision processing unit for reading the image photographed by the center camera part and determining good or bad of the testing object; and a control unit for controlling the stage part, the grid pattern irradiating part, the center camera part, wherein the grid pattern irradiating part irradiates grid patterns having periods of different int
    Type: Application
    Filed: March 8, 2012
    Publication date: December 26, 2013
    Applicant: Mirtec Co. Ltd
    Inventors: Chan Wha Park, Sang Min Oh, Sung Hyun Kim, Ja Myoung Koo