X-ray phosphor imaging screen and method of making same

Details X-ray phosphor imaging screen and method of making same X-ray phosphor imaging screen and method of making same

1989-09-05

1991-02-12

Schor, Kenneth M.

Electric lamp and discharge devices

Photosensitive

Having phosphor screen

156647, 1566591, 427 65, 427160, 378190, H01J 3150

Patent

active

049926993

ABSTRACT:
A close packed planar array corner cube surface is employed in making an x-ray image intensifier screen. The corner cube surface is produced from single cube silicon crystal using a photoresist pattern of an array of triangle openings aligned with the <110> directions of the cube in a {111} plane facial surface of the wafer. Corner cube cells are etched in the wafer surface with an anisotropic etchant preferentially etching the {100} planes of the cubic lattice. A method for producing a retro-reflective surface from the etched silicon wafer for making the x-ray phosphor imaging screen is described.

REFERENCES:
patent: 3944835 (1976-03-01), Vosburgh
patent: 4025662 (1977-05-01), Sumner
patent: 4735396 (1988-04-01), Hamakawa

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