Radiation generating apparatus and radiation imaging system

摘要

A radiation generating apparatus includes a radiation generating unit and a diaphragm unit that functions as a projector-collimator configured to simulate a radiation field with a visible-light field. The diaphragm unit includes a light source configured to generate visible light, an optical lens configured to control a state of diffusion of the visible light emitted from the light source, and field-limiting blades. The light source and the optical lens are provided between a radiation emission window and the field-limiting blades. The light source is movable into and retractable from a path of radiation generated by the radiation generating unit.

主权项

1. A radiation generating apparatus comprising:
a radiation generating unit configured to generate radiation; and a diaphragm unit configured to limit a radiation field that is formed by the radiation emitted from the radiation generating unit, wherein the diaphragm unit includes
a light source configured to generate visible light with which the radiation field is simulated by a visible-light field;an optical lens configured to control a state of diffusion of the visible light, anda pair of field-limiting blades configured to limit the radiation field, wherein the radiation generating unit includes
a radiation tube provided thereinside and configured to generate radiation;an emission window through which the radiation generated by the radiation tube is emitted, andan envelope provided over and enclosing the emission window; and wherein the light source and the optical lens are provided between the emission window and the pair of field-limiting blades, and the light source is movable into and retractable from a path of the radiation by a movable mechanism.