Multi x-ray generator and multi x-ray imaging apparatus
AssigneeCanon Kabushiki Kaisha
InventorsMasahiko Okunuki, Osamu Tsujii, Takeo Tsukamoto
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Abstract
A compact apparatus can form multi-X-ray beams with good controllability. Electron beams (e) emitted from electron emission elements (15) of a multi-electron beam generating unit (12) receive the lens effect of a lens electrode (19). The resultant electron beams are accelerated to the final potential level by portions of a transmission-type target portion (13) of an anode electrode (20). The multi-X-ray beams (x) generated by the transmission-type target portion (13) pass through an X-ray shielding plate (23) and X-ray extraction portions (24) in a vacuum chamber and are extracted from the X-ray extraction windows (27) of a wall portion (25) into the atmosphere.
Claims17
An X-ray generator comprising:
- an electron emission element;
- an acceleration unit configured to accelerate an electron beam emitted from said electron emission element;
- and
- a target which is irradiated with the electron beam,
- wherein said target comprises an X-ray shielding unit, and
- wherein X-rays generated from said target are extracted as an X-ray beam into an atmosphere.
A multi-X-ray generator comprising:
- a plurality of electron emission elements;
- an acceleration unit configured to accelerate electron beams emitted from said plurality of electron emission elements;
- and
- a target which is irradiated with the electron beams,
- wherein said target is provided in correspondence with each of the electron emission elements, said target comprises an X-ray shielding unit, and X-rays generated from said target are extracted as multi-X-ray beams into an atmosphere.
Dependencies are inferred from the claim text.