Hamamatsu-photonics K.k.

Tsutomu Inazura

Kenji Suzuki

A transmission type X-ray tube is provided with a ceramic stem fitted with cathode pins; an output window, the lower surface of which is deposited with a target metal; a ceramic bulb provided between the ceramic stem and the output window; and a focusing electrode provided along the inner surface of the ceramic bulb and which lower end is interposed between the upper surface of the ceramic stem portion and the lower end of the ceramic bulb. With this configuration, not only can the size of the X-ray tube be reduced, but mounting of the focusing electrode can also be made easier, thereby simplifying assembly operations.

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Hamamatsu, Japan

Tsutomu Inazura