Inspection device and production management method

An inspection device for inspecting a foreign substance adhering to an inner surface of the container, the device comprising:

• a light source projecting excitation light to the inner surface of the container;
• an imager capturing a fluorescence image of fluorescence emitted from the foreign substance in response to the excitation light projected;
• and
• a detector detecting the foreign substance adhering to the inner surface of the container from the fluorescence image captured by the imager, wherein
• the foreign substance contains a material emitting fluorescence in response to excitation light projected thereto,
• the detector includes
• a calculator calculating an average brightness value of the excitation light projected to the inner surface of the container in an inspection target region based on the fluorescence image captured by the imager, and
• an adjuster adjusting an image-capturing condition where the fluorescence image is captured such that the average brightness value calculated by the calculator falls within a preset range,
• a quantized brightness value of the fluorescence image captured by the imager is measured, and
• the adjuster previously adjusts the image-capturing condition where the fluorescence image is captured such that the average brightness value falls within a range from ¼ of a maximum brightness value BM to ¾ of the maximum brightness value BM.