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:
Jul. 29, 2025
Filed:
May. 05, 2023
Electronics and Telecommunications Research Institute, Daejeon, KR;
Minchul Kim, Daejeon, KR;
Chun Ju Youn, Daejeon, KR;
Kap-Joong Kim, Daejeon, KR;
Kyoungchun Lim, Daejeon, KR;
Byung Seok Choi, Daejeon, KR;
Joong-Seon Choe, Daejeon, KR;
ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, Daejeon, KR;
Abstract
Provided are a beam tracking module, a free-space quantum communication device, and a free-space optical communication device. The beam tracking module for free-space quantum communication includes a controller configured to determine a divergence angle of a reference beam on the basis of divergence angle control data, a beam path control optical part configured to output the reference beam, and a beam transmitter configured to adjust the divergence angle through the beam path control optical part so that the reference beam having the determined divergence angle is output.