Surface defect inspection device and method

A surface defect inspection device that irradiates an inspection face of an inspection object with illumination light, and detects a defect at the inspection face, based on an image including the inspection face captured, the surface defect inspection device comprising:

• an image capturing unit configured to capture an image;
• an illuminator that forms at least one set of a light region and a dark region, and emits the illumination light with the formation;
• a region adjuster that adjusts a range of a defect detection image region for the detection of the defect, to be set to the image capturing the inspection face irradiated with the illumination light in the light region, in accordance with a previously defined degree of visibility for orange peel, at the detection of the defect at the inspection face;
• a correspondence relationship information storage storing, as correspondence relationship information, an adjustment value for the adjustment of the range of the defect detection image region, in association with the degree of visibility for orange peel;
• and
• an inputter that receives input of the degree of visibility for orange peel,
• wherein the region adjuster determines the adjustment value corresponding to the degree of visibility for orange peel received by the inputter, from the correspondence relationship information stored in the correspondence relationship information storage, and adjusts the range of the defect detection image region with the determined adjustment value.