Patent ID: 6459771
Filing Date: 2002-10-01
Classification: G21K

Abstract:
A method for fabricating precision x-ray collimators including precision focusing x-ray collimators comprising the steps of:providing an electrically conductive substrate; coating said substrate with a layer of x-ray resist; utilizing an intense collimated radiation source for exposing said layer of x-ray resist with a pattern of x-ray; said pattern delineating a grid of apertures to collimate the x-rays defined by a grating mask disposed proximate to said substrate; said pattern defined by first scanning said substrate vertically in a z-direction while varying an angle of inclination of said substrate as a function of a vertical position during the first scan; rotating the substrate by 90 degrees in an X-Z plane while keeping said grating mask fixed; and second scanning said rotated substrate vertically in said z-direction while varying said angle of inclination of said substrate as a function of a vertical position during the second scan for fabricating x-ray collimators having precision focusing in two directions; removing exposed parts of said x-ray resist; and electroplating regions of said removed x-ray resist.