Ray scanning apparatus

A ray scanning apparatus, comprising:

• a conveying device for conveying an object under inspection to pass through a scanning area of the ray scanning apparatus;
• a ray source assembly comprising a plurality of ray source modules, wherein each ray source module of the plurality of ray source modules comprises multiple ray source points each emitting a ray beam, and when observed in a conveying direction of the object under inspection, the plurality of ray source modules are arranged around the scanning merely from three sides and form a U-shape;
• and
• a detector assembly for detecting rays transmitting through the object under inspection during scanning and comprising a plurality of detector sets, when observed in the conveying direction of the object under inspection, the plurality of detector sets being connected to each other at their end portions and arranged around the scanning area merely from three sides to form a U-shape,
• wherein an opening of the U-shape of the ray source assembly is opposite to an opening of the U-shape of the detector assembly, and
• the plurality of detector sets of the detector assembly are fixed in a first plane perpendicular to the conveying direction of the object under inspection, and the ray source module of the plurality of ray source modules located on a side of the opening of the U-shape of the detector assembly is also fixed in the first plane, while remaining ray source modules of the plurality of ray source modules are fixed in at least one plane perpendicular to the conveying direction of the object under inspection, wherein the at least one plane is different from the first plane.