Claims
- 1. An X-ray tube, comprising:a tube wall, an anode having a transmissive target layer for generating X-rays in response to the impingement of an electron beam; a cathode having a loop-shaped electron emissive element for generating an electron beam, the beam forming a substantially annular anode target ring on the transmissive target, an X-ray exit window, adjacent the target layer, and a thermally conductive metal cooling layer disposed with a surface against the transmissive target, the metal cooling layer being disposed substantially within the annular electron target ring, so as not to substantially block the electron beam, which metal cooling layer is thermally conductively connected to the tube wall, which metal cooling layer acts as a means for enhancing the dissipation of heat at least for the anode in which the thermally conductive metal cooling layer still further comprises a metal disk situated within the anode target ring.
- 2. The X-ray tube of claim 1 comprising a radial dissipation conductor connected between the disk and the tube wall.
Priority Claims (1)
Number |
Date |
Country |
Kind |
92200207 |
Jan 1992 |
EP |
|
Parent Case Info
This is a continuation of application Ser. No. 08/350,578, filed Dec. 7, 1994 now abandoned, which is a continuation of application Ser. No. 08/222,557, filed Apr. 4, 1994 (now U.S. Pat. No. 5,420,906), which is a continuation of application Ser. No. 08/008,112, filed Jan. 25, 1993 abandoned.
US Referenced Citations (4)
Continuations (3)
|
Number |
Date |
Country |
Parent |
08/350578 |
Dec 1994 |
US |
Child |
08/683186 |
|
US |
Parent |
08/222557 |
Apr 1994 |
US |
Child |
08/350578 |
|
US |
Parent |
08/008112 |
Jan 1993 |
US |
Child |
08/222557 |
|
US |