Radiant energy – Photocells; circuits and apparatus – Photocell controlled circuit
Patent
1993-03-31
1994-10-25
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Photocell controlled circuit
2504844, H01J 4014
Patent
active
053591887
ABSTRACT:
An X-ray image intensifier includes an envelope having an input window consisting of an aluminum alloy, and an input phosphor screen arranged in the envelope to oppose the input window, and including a substrate, an input phosphor layer formed on the substrate, and a photocathode formed on the input phosphor layer, wherein the aluminum alloy contains 3 to 6 wt % of Mg and 0.01 to 0.5 wt % of Zr. This aluminum alloy may further contain at least one metal element selected from the group consisting of 0.1 to 1 wt % of Mn, 0.01 to 0.5 wt % of Cr, 0.01 to 0.5 wt % of Sc, and 0.01 to 0.05 wt % of Ti.
REFERENCES:
patent: 4153854 (1979-05-01), Christagau et al.
patent: 4331898 (1982-05-01), Shimizu et al.
patent: 4516715 (1985-05-01), Sugimori et al.
patent: 4575635 (1986-03-01), Arakawa et al.
Kubo Hiroshi
Tanaka Hiroki
Tsuchida Shin
Yoshida Atsuya
Kabushiki Kaisha Toshiba
Nelms David C.
Shami K.
Sumitomo Light Metal Industries Ltd.
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