Patents by Inventor Ae-Jin YEON

Ae-Jin YEON 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).

  • Holographic writing method and holographic writing apparatus
    Patent number: 11656577
    Abstract: Disclosed are a holographic writing method and apparatus capable of re-writing (updating) holographic information and quickly writing the holographic information with high efficiency. In an embodiment, a holographic writing method for writing holographic information by emitting a beam at a holographic recording medium containing a photo-responsable polymer material having photoisomerization characteristics that change a molecular structure thereof by absorbing light energy, writes the holographic information by using a writing wavelength different from a maximum absorption wavelength in a light absorption spectrum of photoisomer molecule structures of the holographic recording medium. The maximum absorption wavelength is a wavelength at which light absorption rate is maximum in the light absorption spectrum.
    Type: Grant
    Filed: November 8, 2019
    Date of Patent: May 23, 2023
    Assignees: KYUNGPOOK NATIONAL UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION, KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY
    Inventors: Hak-Rin Kim, Jae-Won Ka, Mi-Hye Yi, Ae-Jin Yeon, Kyung-Il Joo
  • Holographic Writing Method and Holographic Writing Apparatus
    Publication number: 20200201251
    Abstract: Disclosed are a holographic writing method and apparatus capable of re-writing (updating) holographic information and quickly writing the holographic information with high efficiency. In an embodiment, a holographic writing method for writing holographic information by emitting a beam at a holographic recording medium containing a photo-responsable polymer material having photoisomerization characteristics that change a molecular structure thereof by absorbing light energy, writes the holographic information by using a writing wavelength different from a maximum absorption wavelength in a light absorption spectrum of photoisomer molecule structures of the holographic recording medium. The maximum absorption wavelength is a wavelength at which light absorption rate is maximum in the light absorption spectrum.
    Type: Application
    Filed: November 8, 2019
    Publication date: June 25, 2020
    Inventors: Hak-Rin KIM, Jae-Won KA, Mi-Hye YI, Ae-Jin YEON, Kyung-Il JOO