Patent ID: 7330534

Claim:
A ray beam guiding apparatus, comprising: a ray beam guiding box which has substantially fan-shaped top and bottom surfaces, defines an inner space, and has open wide and narrow ends; an engaging member joined to the narrow end of the ray beam guiding box; a first collimator mounted to the ray beam guiding box adjacent to the narrow end and for adjusting a profile of the ray beam in a first direction and a second direction perpendicular to the first direction; a second collimator having a calibration slit or grill and mounted to the ray beam guiding box adjacent to the wide end; an adjusting member connecting the engaging member and a ray generator for emitting rays and for adjusting a distance between the ray generator and the ray beam guiding box; wherein the ray beam guiding box comprises: a lower box body, including: a substantially fan-shaped bottom plate, first and second side plates extending upwardly from two sides of the bottom plate and perpendicular to the bottom plate, and an extension plate portion extending from the wide end of the ray beam guiding box and lying in the same plane as that of the bottom plate, in which a detector support with a detector array is disposed on the extension plate portion; and an upper cover covering a top of the lower box body.