Camera focus adjustment jig and camera focus adjustment method

A camera focus adjustment jig fixed to an inspection device and configured to adjust a camera focus of a plurality of cameras, the inspection device including

• said plurality of cameras, each configured to photograph an inspection target, and
• a movable arm to which the cameras are fixed via a fixing part, the movable arm being configured to move the cameras to a photographing position where the inspection target is photographed,
• the camera focus adjustment jig comprising:
• a connection arm connected to the fixing part;
• an adjusting unit provided on the connection arm and positioned, with respect to the camera, at a position equivalent to a position of the inspection target located at the photographing position;
• and
• a display part provided on a surface of the adjusting unit facing the camera, wherein:
• the adjusting unit is provided with a plurality of view angle frames in accordance with a number of cameras in the plurality of cameras;
• and
• the display part is provided in each of the view angle frames.

A camera focus adjustment method used for an inspection device and adjusting a camera focus of a plurality of cameras, the inspection device including

• a plurality of cameras, each configured to photograph an inspection target, and
• a movable arm to which the cameras are fixed via a fixing part, the movable arm being configured to move the cameras to a photographing position where the inspection target is photographed,
• the camera focus adjustment method comprising:
• a preparation process of positioning, via a connection arm connected to the fixing part, an adjusting unit provided on the connection arm, at a position equivalent to a position of the inspection target located at the photographing position, wherein the adjusting unit is provided with a plurality of view angle frames corresponding to a number of cameras in the plurality of cameras;
• a view angle adjustment process of adjusting a view angle of each of the cameras in a respective one of the view angle frames provided on a surface of the adjusting unit facing the camera, each of the view angle frames comprising a display part;
• and
• a focus adjustment process of adjusting a focus of each of the cameras, respectively, such that a distance between the camera and a corresponding one of said display parts, provided on the surface of the adjusting unit facing the camera, becomes appropriate.