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US 2016/0260573 A1Published application
X-ray tube having non-evaporable getter
AssigneeXl Co., Ltd.
InventorRae Jun Park
Life of this patent
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Abstract
The present invention relates to an X-ray tube with non-evaporable getters disposed therein for maintaining a degree of vacuum sufficient to operate the X-ray tube. The present invention provides a fixed-anode X-ray tube and a rotating-anode X-ray tube in which non-evaporable getters are disposed. The X-ray tubes, even when rated power is introduced without an aging process, can perform gas adsorption sufficiently and stably during operation, despite gases that can be generated by the filament and the cathode focusing cap and gases that can be generated by the target.
Claims21
An X-ray tube comprising:
- an outer bulb;
- a cathode focusing cap fixedly mounted inside the outer bulb and provided with a filament;
- an anode an end of which is mounted inside the outer bulb and the other end of which is protruding from the outer bulb so as to be outside the outer bulb, the anode being provided with a target to which electron beam generated by the filament is to be collided;
- and
- an anode shielding unit provided near the anode, the anode shielding unit being provided with a radiation window that can shield the target and irradiate X-rays generated by the target, wherein the anode shielding unit is provided with non-evaporable getters for gas adsorption.
2 more elements
An X-ray tube comprising:
- an outer bulb;
- a cathode focusing cap fixedly mounted inside the outer bulb and provided with a filament;
- an anode an end of which is mounted inside the outer bulb and the other end of which is protruding from the outer bulb so as to be outside the outer bulb, the anode being provided with a target to which electron beam generated by the filament is to be collided;
- and
- an anode shielding unit provided near the anode, the anode shielding unit being provided with a radiation window that can shield the target and irradiate X-rays generated by the target, wherein the cathode focusing cap is provided with non-evaporable getters for gas adsorption.
2 more elements
An X-ray tube comprising:
- an outer bulb;
- a cathode focusing cap fixedly mounted inside the outer bulb and provided with a filament;
- and
- an anode an end of which is mounted inside the outer bulb and the other end of which is protruding from the outer bulb so as to be outside the outer bulb, the anode being provided with a target to which electron beam generated by the filament is to be collided, wherein the cathode focusing cap is provided with non-evaporable getters for gas adsorption.
1 more element
An X-ray tube comprising:
- an outer bulb;
- an electrode stem unit fixedly mounted inside the outer bulb;
- a cathode focusing cap fixedly mounted to the electrode stem unit and provided with a filament;
- a rotating-anode target to which electron beam generated by the filament is to be collided;
- and
- a rotor for rotating the rotating-anode target, wherein the cathode focusing cap is provided with non-evaporable getters for gas adsorption.
3 more elements
An X-ray tube comprising:
- an outer bulb;
- a cathode focusing cap fixedly mounted inside the outer bulb and provided with a filament;
- an anode an end of which is mounted inside the outer bulb and the other end of which is protruding from the outer bulb so as to be outside the outer bulb, the anode being provided with a target to which electron beam generated by the filament is to be collided;
- and
- a metal cylinder mounted inside the outer bulb to surround the anode, the metal cylinder being provided with a radiation window, wherein the metal cylinder is provided with non-evaporable getters for gas adsorption.
2 more elements
An X-ray tube comprising:
- an outer bulb;
- an electrode stem unit fixedly mounted inside the outer bulb;
- a cathode focusing cap fixedly mounted to the electrode stem unit and provided with a filament;
- a rotating-anode target to which electron beam generated by the filament is to be collided;
- a rotor for rotating the rotating-anode target;
- and
- a metal cylinder mounted inside the outer bulb to surround the rotating-anode target, the metal cylinder being provided with a radiation window, wherein the metal cylinder is provided with non-evaporable getters for gas adsorption.
4 more elements
An X-ray tube comprising:
- an outer bulb;
- a cathode focusing cap fixedly mounted inside the outer bulb and provided with a filament;
- and
- an anode an end of which is mounted inside the outer bulb and the other end of which is protruding from the outer bulb so as to be outside the outer bulb, the anode being provided with a target to which electron beam generated by the filament is to be collided, wherein an outer circumferential surface of the anode inside the outer bulb is provided with non-evaporable getters for gas adsorption.
1 more element
An X-ray tube comprising:
- an outer bulb;
- an electrode stem unit fixedly mounted inside the outer bulb;
- a cathode focusing cap fixedly mounted to the electrode stem unit and provided with a filament;
- a rotating-anode target to which electron beam generated by the filament is to be collided;
- and
- a rotor for rotating the rotating-anode target, wherein the rotating-anode target is provided with non-evaporable getters for gas adsorption.
3 more elements
An X-ray tube comprising:
- an outer bulb;
- an electrode stem unit fixedly mounted inside the outer bulb;
- a cathode focusing cap fixedly mounted to the electrode stem unit and provided with a filament;
- a rotating-anode target to which electron beam generated by the filament is to be collided;
- and
- a rotor for rotating the rotating-anode target, wherein the rotor is provided with non-evaporable getters for gas adsorption.
3 more elements
Dependencies are inferred from the claim text.