①Multiple cameras have been used for the visual inspection of a single object.
②In addition, the customer want to add a visual inspection of the inspection surface at a different height from that of ①.
③ The customer want capture all of ①and ② in a single shot.

・①&③ → Wide field of view(FOV) eliminates the need to install multiple cameras, lenses, and lighting. Cost and control effort can be reduced.
・② → The depth of field (DOF) is so deep that both inspection surfaces ①and ②are in focus. The Image can be taken in a single shot.