Radiation generating apparatus and radiation imaging system
AssigneeCanon Kabushiki Kaisha
InventorsYoichi Ikarashi, Yoichi Ando, Yasuo Ohashi
Life of this patent
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Abstract
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.
Claims11
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;
- and
- an optical lens configured to control a state of diffusion of the visible light.
A radiation imaging system comprising:
- a radiation generating apparatus including
- 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,
- the diaphragm unit including
- a light source configured to generate visible light with which the radiation field is simulated by a visible-light field, and
- an optical lens configured to control a state of diffusion of the visible light;
- a radiation detecting device configured to detect the radiation having been emitted from the radiation generating apparatus and having been transmitted through an examination object;
- and
- a control device configured to control the radiation generating apparatus in conjunction with the radiation detecting device.
Dependencies are inferred from the claim text.