Patent ID: 11918396
Assignee: CANON MEDICAL SYSTEMS CORPORATION
Field: Optics (Instruments)
Classification: CPC A  G | IPC A  G

Claim 6:
7. A medical imaging apparatus comprising:
a gantry in which a bore is formed, the bore being formed to accept a patient to be imaged by the medical imaging apparatus;
a carriage configured to move through the bore;
a projector;
a screen on which an image is projected by the projector from a rear, the rear being opposite to a side of which a top plate is inserted into the bore, the screen being provided on the carriage;
a reflector configured to reflect the image projected on the screen, the reflector including a base having a surface, and a plurality of projecting prisms arranged on the surface of the base, perpendicular to an incident direction of the image, and adjacent to one another along a singular dimensional direction,
wherein each of the prisms extends in a direction parallel to a plane of the surface of the base and curves within the plane of the surface of the base, and wherein each of the prisms has a different extent of curvature within the plane of the surface of the base; and
a frame configured to support the reflector, the frame being provided on the carriage, wherein the reflector receives a light related to the image directly from the screen, and the plurality of prisms reflect the light to the patient.