The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 21, 2021
Filed:
Dec. 19, 2019
Applicant:
Electronics and Telecommunications Research Institute, Daejeon, KR;
Inventors:
Suntak Park, Daejeon, KR;
Bong Je Park, Daejeon, KR;
Seung Koo Park, Sejong, KR;
Jae Woong Yoon, Yongin, KR;
Eun Jin Shin, Daejeon, KR;
Assignee:
Electronics and Telecommunications Research Institute, Daejeon, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 7/04 (2021.01); G02B 26/08 (2006.01); G02B 26/00 (2006.01);
U.S. Cl.
CPC ...
G02B 26/0825 (2013.01); G02B 7/04 (2013.01); G02B 26/004 (2013.01); G02B 26/0875 (2013.01);
Abstract
Provided is focal variable device system including a focus variable element including an absorbing layer, and an adjustable light source configured to cause an adjustable light to enter the focus variable element. The absorbing layer includes a thermal expansion material that absorbs the adjustable light and thermally expands.