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US 2017/0287673 A1Published application
Shielded, Transmission-Target, X-Ray Tube
AssigneeMoxtek, Inc.
InventorsDustin Peterson, Richard Zimmerman, Rick Steck, Vince Jones, Eric Miller
Life of this patent
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Abstract
A transmission-target x-ray tube can include an x-ray window 12 mounted on a window-housing 13. The window-housing 13 can be made of a high density material with a high atomic number, and can include an aperture 13a with an increasing-inner-diameter region 23 for blocking x-rays and electrons.
Claims21
A transmission-target x-ray tube comprising:
- a) a cathode including an electron-emitter capable of emitting electrons towards a target material on an x-ray window;
- b) an anode including a window-housing and the x-ray window, with the x-ray window mounted on a window-mount portion of the window-housing;
- c) an electrically-insulative enclosure carrying the cathode and the anode and electrically-insulating the cathode from the anode;
- d) the x-ray window being configured for transmission of x-rays and including the target material configured for production and emission of x-rays in response to impinging electrons;
- and
- e) the window-housing including:
- i) a proximal-end located closer to the electron-emitter;
- ii) the window-mount located farther from the electron-emitter than the proximal-end;
- iii) an aperture:
- extending through the window-housing from the proximal-end to the window-mount;
- including an increasing-inner-diameter region with a smaller diameter closer to the proximal-end and a larger diameter closer to the window-mount;
- and
- having an angle in the increasing-inner-diameter region that is between 15 degrees and 35 degrees with respect to a longitudinal-axis of the x-ray tube, the longitudinal-axis extending from the electron-emitter through the aperture of the window-housing and through the x-ray window;
- iv) an average atomic number of at least 45;
- and
- v) an average density of at least 12 g/cm3;
- f) 2*De≦Dp≦4*De, where Dp is a diameter of the aperture of the window-housing at the proximal-end and De is an electron-beam diameter at the proximal-end of the aperture of the window-housing.
14 more elements
A transmission-target x-ray tube comprising:
- a) a cathode including an electron-emitter capable of emitting electrons towards a target material on an x-ray window;
- b) an anode including a window-housing, a window-cap, and the x-ray window, with the x-ray window mounted on a window-mount portion of the window-housing and sandwiched between the window-cap and the window-housing;
- c) an electrically-insulative enclosure carrying the cathode and the anode and electrically-insulating the cathode from the anode;
- d) the x-ray window being configured for transmission of x-rays and including the target material configured for production and emission of x-rays in response to impinging electrons;
- e) the window-cap including:
- i) an aperture extending therethrough;
- ii) an average atomic number of at least 45;
- and
- iii) an average density of at least 12 g/cm3.
- f) the window-housing including:
- i) a proximal-end located closer to the electron-emitter;
- ii) the window-mount located farther from the electron-emitter than the proximal-end;
- iii) an aperture, extending through the window-housing from the proximal-end to the window-mount, and including an increasing-inner-diameter region with a smaller diameter closer to the proximal-end and a larger diameter closer to the window-mount;
- iv) an average atomic number of at least 45;
- and
- v) an average density of at least 12 g/cm3;
- g) a blocking-disk, associated with and electrically-coupled to the cathode, and having an average atomic number of at least 45 and an average density of at least 12 g/cm3.
14 more elements
A transmission-target x-ray tube comprising:
- a) a cathode including an electron-emitter capable of emitting electrons towards a target material on an x-ray window;
- b) an anode including a window-housing and the x-ray window, with the x-ray window mounted on a window-mount portion of the window-housing;
- c) an electrically-insulative enclosure carrying the cathode and the anode and electrically-insulating the cathode from the anode;
- d) the x-ray window being configured for transmission of x-rays and including the target material configured for production and emission of x-rays in response to impinging electrons;
- and
- e) the window-housing including:
- i) a proximal-end located closer to the electron-emitter;
- ii) the window-mount located farther from the electron-emitter than the proximal-end;
- iii) an aperture, extending through the window-housing from the proximal-end to the window-mount, including an increasing-inner-diameter region with a smaller diameter closer to the proximal-end and a larger diameter closer to the window-mount, and having an angle in the increasing-inner-diameter region that is at least 20 degrees with respect to a longitudinal-axis of the x-ray tube, the longitudinal-axis extending from the electron-emitter through the aperture of the window-housing and through the x-ray window;
- iv) an average atomic number of at least 45;
- and
- v) an average density of at least 12 g/cm3.
9 more elements
(canceled)
Dependencies are inferred from the claim text.