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US 4,969,177 AGranted
X-ray irradiation apparatus provided with irradiation range monitor
AssigneeHoriba, Ltd.
InventorsKunio Otsuki, Yoshihiko Usui
Life of this patent
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Abstract
According to the present invention, a laser and X-rays are adapted to be coaxial to each other by the combination of a mirror and a focusing lens, whereby an X-ray irradiation position and a range thereof on an object to be subjected to the application of X-rays can be surely monitored even though the X-ray irradiation range is small.
Claims9
An X-ray irradiation apparatus provided with an irradiation position monitor, comprising:
- an X-ray source;
- a focusing lens disposed apart by a focal distance from an object to be subjected to the application of X-rays;
- an X-ray guide tube provided with a thin passage for passing X-rays from the X-ray source therethrough from an X-ray projector through a center of an optical axis of said focusing lens and for emitting said X-ray toward said object;
- a mirror inserted about said X-ray guide tube and disposed between said X-ray projector and said focusing lens while being inclined so that a reflecting surface thereof may face said focusing lens;
- a visible light source for emitting visible rays to said mirror so that an axis of a reflected light by said reflecting surface of said mirror may be parallel or nearly parallel to said X-ray guide tube, and
- means for creating a visible target image with the light source rays whereby the focusing lens can form the target image to define the position of the X-rays.
3 more elements
An X-ray irradiation and irradiation position monitoring apparatus, comprising:
- X-ray source means for emitting X-rays along an irradiation axis including an X-ray guide tube;
- visible light source means for emitting visible light rays in a direction generally perpendicular to said irradiation axis;
- reflection means for reflecting said visible light rays to thereby produce reflected rays;
- a shading member to create a target image in the visible light rays, and
- focusing means for collecting said visible reflected rays and directing them towards an object to be irradiated, whereby the target image can define the position of the X-rays.
2 more elements
Dependencies are inferred from the claim text.