Inspection method and manufacturing method for molded resin product as well as inspection device and manufacturing device for molded resin product

A molded resin article inspection apparatus comprises an X-ray emitting apparatus for emitting X-ray beams through a plurality of paths, one or more X-ray detectors for detecting X-ray beams that have passed through a molded resin article, a height measuring means for measuring height at a reference marker on the molded resin article, a distance measuring means for measuring the distance from the X-ray emitting apparatus to the molded resin article, and an image processor,

• wherein the image processor is configured for detecting defect candidates based on two or more images acquired by the X-ray detector, using a stereo matching method, performing logical multiplication of the image having recorded height position information and a defect candidate image, and judging the state of the defects candidate from the height position,
• wherein the image processor is also configured for setting the distance from the X-ray emitting apparatus to the molded resin article, setting an inspection range based on the distance and the thickness of the molded resin article, and deciding that a defect candidate found in the inspection range is a defect, and
• wherein the image processor is further configured for inputting a target distance from the X-ray emitting apparatus to the molded resin article, calculating the difference between the input value and the measured value, and making a correction based thereon so that the distance becomes equal to the input value.