Patents by Inventor Youn Ha HWANG

Youn Ha HWANG 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).

  • Optical filter and imaging device comprising same
    Patent number: 10725215
    Abstract: An optical filter includes a binder resin matrix, and a light absorbent dispersed in the binder resin matrix. The binder resin matrix in which the light absorbent is dispersed is composed of a single layer, and the binder resin matrix includes n zones (where n is an integer ranging from 3 to 7) equally divided in a thickness direction of the matrix. The binder resin matrix has one or more zones in which 40% or more of the total amount of the light absorbent is dispersed, and has one or more zones in which 10% or less of the total amount of the light absorbent is dispersed.
    Type: Grant
    Filed: March 17, 2016
    Date of Patent: July 28, 2020
    Assignee: LMS CO., LTD
    Inventors: Jin Ho Jung, Joo Young Kim, Youn Ha Hwang
  • OPTICAL FILTER AND IMAGING DEVICE COMPRISING SAME
    Publication number: 20180074241
    Abstract: An optical filter is provided. The optical filter includes a binder resin matrix, and a light absorbent dispersed in the binder resin matrix. Here, the binder resin matrix in which the light absorbent is dispersed is composed of a single layer, and the binder resin matrix includes n zones (where n is an integer ranging from 3 to 7) equally divided in a thickness direction of the matrix. When it is assumed that the total amount of the light absorbent dispersed throughout the binder resin matrix is set to A, there are one or more zones in which 40% or more of the light absorbent is dispersed based on the total amount of the light absorbent, and there are one or more zones in which 10% or less of the light absorbent is dispersed based on the total amount of the light absorbent.
    Type: Application
    Filed: March 17, 2016
    Publication date: March 15, 2018
    Inventors: Jin Ho JUNG, Joo Young KIM, Youn Ha HWANG