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:
Feb. 10, 2026
Filed:
Jan. 05, 2021
Ntt, Inc., Tokyo, JP;
Kento Yoshizawa, Musashino, JP;
Kazumitsu Sakamoto, Musashino, JP;
Takeshi Kinoshita, Musashino, JP;
Etsushi Yamazaki, Musashino, JP;
Takayuki Mizuno, Musashino, JP;
Takuya Ohara, Musashino, JP;
NTT, Inc., Tokyo, JP;
Abstract
An optical signal emitting direction control method of a present embodiment includes arranging a transparent member to extend over an underwater space and an in-air space, causing an optical signal to enter the transparent member from the underwater space via a surface of an underwater portion of the transparent member immersed in the underwater space, and causing the optical signal entered the transparent member to be emitted into the in-air space via a surface of an in-air portion of the transparent member exposed to the in-air space.