Visual inspection apparatus and visual inspection method

A visual inspection apparatus configured to inspect a surface of an inspection target, the visual inspection apparatus comprising:

• a rotational portion configured to rotate in a state in which the inspection target is placed on the rotational portion;
• a mirror portion provided so as to reflect the inspection target in the state in which the inspection target is placed on the rotational portion;
• an imaging portion configured to image the inspection target reflected in the mirror portion;
• an adjustment portion configured to change an imaging angle of the imaging portion relative to the inspection target reflected in the mirror portion;
• and
• an inspection portion configured to inspect a surface of the inspection target based on image data captured by the imaging portion,
• wherein the inspection portion distinguishes a defect and luminance unevenness on the surface of the inspection target based on a plurality of different pieces of image data,
• wherein each different piece of image data is captured at a different imaging angle from the other different pieces of image data and with the surface of the inspection target being oriented in a different rotational position from the other different pieces of image data, the different imaging angles of the plurality of different pieces of image data being formed by the adjustment portion, and the different rotational positions of the plurality of different pieces of image data being attained by adjustments of the rotational portion, and
• wherein the inspection portion distinguishes the defect and the luminance unevenness on the surface of the inspection target after performing processing for causing the plurality of different pieces of image data to be oriented in the same direction.