Patent ID: 6311001
Filing Date: 2001-10-30
Classification: C03B,C03C,G02B,H01J

Abstract:
A method for making a microchannel plate having a plurality of microchannels with funnel-shaped openings, said microchannel plate used as an electron multiplier in an image intensifier tube, said method comprising the steps of:providing a plurality of glass fibers, said fibers each having an acid etchable core, an acid resistant cladding, and an interface therebetween;forming the glass fibers into a thin plate of glass;treating said plate with an alkaline material having an affinity for said acid resistant cladding to etch the cladding at said interface to a pre-determined depth; andtreating said plate in an acid solution for a predetermined time and temperature to form a plurality of microchannels in said plate, said microchannels having funnel-shaped openings.