Brazing structure for X-ray image intensifier

Details Brazing structure for X-ray image intensifier Brazing structure for X-ray image intensifier

1995-11-22

1998-01-06

Horabik, Michael

Electric lamp and discharge devices

Photosensitive

Photocathode

313541, 313537, H01J 4006

Patent

active

057058857

ABSTRACT:
In an X-ray image intensifier, an incident window on which X-rays are incident is fixed to a support frame fixed to a glass vessel. The incident window has a dome portion and a flat portion around the dome portion, and is fixed to the support frame through an annular brazing sheet. The brazing sheet has brazing material layers. The brazing material layers are melted, thereby welding the brazing sheet, the incident window, and the support frame with each other. A groove is formed in the brazing sheet to form a brazing material puddle, so the brazing material will not reach the input screen of the incident window during melting. In an alternate embodiment, an anti-wetting layer is disposed on the incident window to prevent brazing material from wetting the input screen. In a further embodiment, the thickness of the X-ray incident window has a thickness that increases gradually from the center toward a peripheral portion thereof.

REFERENCES:
patent: 3904065 (1975-09-01), Shrader
patent: 4331898 (1982-05-01), Shimizu et al.
patent: 4717860 (1988-01-01), Christgau
patent: 4721884 (1988-01-01), Colomb et al.
patent: 4870473 (1989-09-01), Sugimori
patent: 4961026 (1990-10-01), Funk et al.
patent: 5506403 (1996-04-01), Yamada et al.
Patent Abstracts of Japan, vol. 011, No. 105 (M-577), Apr. 3, 1987 & JP 61 253166A (Sumitomo Light Metal Ind Ltd), Nov. 11, 1986.

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