US 12,256,158 B2
Inspection apparatus
Masaru Ishida, Kanagawa (JP); Hiroki Nakajima, Kanagawa (JP); and Mikio Shibukawa, Kanagawa (JP)
Assigned to ANRITSU CORPORATION, Kanagawa (JP)
Filed by ANRITSU CORPORATION, Kanagawa (JP)
Filed on Jan. 17, 2023, as Appl. No. 18/155,310.
Claims priority of application No. 2022-012967 (JP), filed on Jan. 31, 2022.
Prior Publication US 2023/0247312 A1, Aug. 3, 2023
Int. Cl. H04N 23/90 (2023.01); B65G 15/24 (2006.01); H04N 23/56 (2023.01)
CPC H04N 23/90 (2023.01) [H04N 23/56 (2023.01); B65G 15/24 (2013.01)] 9 Claims
OG exemplary drawing
 
1. An inspection apparatus that includes a first conveyance unit and a second conveyance unit arranged with a predetermined gap in a conveyance direction of an inspection item and inspects the inspection item when the inspection item passes over the predetermined gap, the inspection apparatus comprising:
a first image pickup device that is provided on one side with the predetermined gap in an intersection direction that intersects with the conveyance direction of the inspection item and picks up an image of the inspection item from the one side;
a second image pickup device that is provided on the other side with the predetermined gap in the intersection direction and picks up an image of the inspection item from the other side;
a first light emission device that is disposed at a position facing the first image pickup device with the predetermined gap in the intersection direction and emits light to the inspection item from the other side; and
a second light emission device that is disposed at a position facing the second image pickup device with the predetermined gap in the intersection direction and emits light to the inspection item from the one side,
wherein
when the first image pickup device is at an image pickup position at which the first light emission device is included in an image pickup range, the second image pickup device is at an image pickup position at which the second light emission device is included in an image pickup range, and each of the image pickup positions is set as a first image pickup position, and
when the first image pickup device is at an image pickup position at which the first light emission device is not included in the image pickup range, the second image pickup device is at an image pickup position at which the second light emission device is not included in the image pickup range, and each of the image pickup positions is set as a second image pickup position,
at least one of the first image pickup device and the second image pickup device is configured switch the image pickup position between the first image pickup position and the second image pickup position.