US 12,081,867 B2
System and method for system for generating and detecting an electromagnetic wave
Zempei Wada, Saitama (JP); Takahiro Sato, Kanagawa (JP); and Takeaki Itsuji, Kanagawa (JP)
Assigned to Canon Kabushiki Kaisha, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Jan. 13, 2023, as Appl. No. 18/154,747.
Application 18/154,747 is a continuation of application No. 17/317,338, filed on May 11, 2021, granted, now 11,588,968.
Claims priority of application No. 2020-085565 (JP), filed on May 15, 2020.
Prior Publication US 2023/0156327 A1, May 18, 2023
Int. Cl. H04N 23/67 (2023.01); H04N 23/90 (2023.01)
CPC H04N 23/671 (2023.01) [H04N 23/90 (2023.01)] 23 Claims
OG exemplary drawing
 
1. An inspection method comprising:
acquiring a first terahertz image of a plurality of transmission units in a state where the plurality of transmission units is irradiating an terahertz wave;
determining whether an output of the terahertz wave from the plurality of transmission units is more than or equal to a threshold based on information about the first terahertz image; and
performing, in a case where the output of the terahertz wave is less than the threshold, an operation to enable checking of the operation of each of the plurality of transmission units.