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Title:
X-RAY TUBE
Document Type and Number:
WIPO Patent Application WO/2018/066170
Kind Code:
A1
Abstract:
This X-ray tube comprises an anode target, a cathode (10) having a first filament and a focusing electrode, and a vacuum envelope. The focusing electrode has a flat front surface (Sf), a flat first surface (S1), a first groove portion (16), and a pair of first protruding portions (P1). The pair of first protruding portions (P1) are formed to protrude from the first surface (S1) toward the front surface (Sf) and sandwich the first groove portion (16) in a first length direction (dL1).

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Inventors:
ISHIHARA TOMONARI (JP)
Application Number:
PCT/JP2017/020312
Publication Date:
April 12, 2018
Filing Date:
May 31, 2017
Export Citation:
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Assignee:
TOSHIBA ELECTRON TUBES & DEVIC (JP)
International Classes:
H01J35/06
Domestic Patent References:
WO2014007167A12014-01-09
Foreign References:
JPH02128356U1990-10-23
JPH11273598A1999-10-08
JPH02207443A1990-08-17
Other References:
See also references of EP 3522198A4
Attorney, Agent or Firm:
S & S INTERNATIONAL PPC (JP)
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