Patents by Inventor Doohoe Lee

Doohoe Lee 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).

  • PROJECTION OPTICAL SYSTEM AND SEE-THROUGH DISPLAY DEVICE INCLUDING THE SAME
    Publication number: 20230062633
    Abstract: A projection optical system includes a base, a mirror on the base, and a pair of first actuators provided between the base and the mirror, and facing each other. Each of the pair of first actuators includes a first electroactive polymer film having a size that varies according to an applied voltage, and a slope of the mirror is adjusted according to a change in the size of the first electroactive polymer film.
    Type: Application
    Filed: May 24, 2022
    Publication date: March 2, 2023
    Applicants: SAMSUNG ELECTRONICS CO., LTD., AJOU UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION
    Inventors: Bongsu Shin, Jesung Koh, Changhwan Kim, Doohoe Lee, Hongseok LEE