Optical information reading device

A fixed optical information reading device comprising:

• an instruction unit provided in the fixed optical information reading device;
• an imaging section that captures an image of a code provided in a workpiece;
• a decoding section that decodes image data acquired by the imaging section;
• an arithmetic operation section that arithmetically operates a matching level indicating easiness of the decoding of the code, stability of the decoding, a margin of the decoding, or pixel-per-cell in the decoding section;
• an image display section that displays, as an image, at least one of the matching level, the image data acquired by the imaging section, and an average success rate of the decoding obtained by decoding a plurality of image data obtained by capturing the image of the code a plurality of times;
• and
• a reading condition control section that controls a reading condition including an imaging condition of the imaging section, and an image processing condition in the decoding section, wherein
• the reading condition control section can perform tuning which is processing of searching for the reading condition suitable for the reading of the code, by an instruction from the instruction unit, and
• after the tuning ends, the image display section displays at least one of the matching level, the image data acquired by the imaging section, and the average success rate of the decoding obtained by decoding the plurality of pieces of image data obtained by capturing the image of the code the plurality of times.