X-ray or gamma ray systems or devices – Source – Electron tube
Reexamination Certificate
2006-10-03
2010-11-09
Kao, Chih-Cheng G (Department: 2882)
X-ray or gamma ray systems or devices
Source
Electron tube
C378S140000
Reexamination Certificate
active
07831020
ABSTRACT:
The present invention relates to an X-ray tube, having a structure for realizing improvement of a magnification factor of a magnified transmission image, and an X-ray source that includes the X-ray tube. The X-ray tube includes: a target housing unit, housing an X-ray target; and an electron gun housing unit, one end of which is mounted to a side wall portion of the target housing unit. The electron gun housing unit is disposed so that a tube axis thereof intersects a tube axis of the target housing unit. The electron gun housing unit holds an electron gun while a center of an electron emission exit of the electron gun is shifted more toward an X-ray emission window side, disposed at one end of the side wall portion of the target housing unit, than the tube axis of the electron gun housing unit.
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Drinker Biddle & Reath LLP
Hamamatsu Photonics K.K.
Kao Chih-Cheng G
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