US 12,438,614 B2
Free space optical communication apparatus, free space optical communication system, and free space optical communication method
Koya Takata, Tokyo (JP); Atsushi Kamoi, Tokyo (JP); Hisashi Mizumoto, Tokyo (JP); and Masaki Aizono, Tokyo (JP)
Assigned to NEC CORPORATION, Tokyo (JP)
Filed by NEC Corporation, Tokyo (JP)
Filed on Aug. 4, 2023, as Appl. No. 18/230,460.
Claims priority of application No. 2022-129457 (JP), filed on Aug. 16, 2022.
Prior Publication US 2024/0063904 A1, Feb. 22, 2024
Int. Cl. H04B 10/00 (2013.01); H04B 10/112 (2013.01)
CPC H04B 10/1121 (2013.01) 9 Claims
OG exemplary drawing
 
1. A free space optical communication apparatus comprising a plurality of light transmitting sections and at least one processor,
the at least one processor carrying out an optical axis alignment process of aligning an optical axis of each of the plurality of light transmitting sections with a corresponding one of a plurality of light receiving sections included in a communication target of the free space optical communication apparatus,
in the optical axis alignment process, the at least one processor
causing at least one of the plurality of light transmitting sections to emit scan light while varying an emitting direction, and
aligning an optical axis of a light transmitting section which is other than the at least one light transmitting section, based on an emitting direction of the scan light emitted from the at least one light transmitting section and received by a corresponding one of the light receiving sections.