Patent ID: 6876802
Filing Date: 2005-04-05
Classification: G02B,H01J

Abstract:
1. A microchannel plate for an image intensifier tube, in which the plate includes a plurality of microchannels extending in a longitudinal dimension between transverse surfaces of the plate, a microchannel comprising: a first portion forming a first opening proximate a surface of the plate, the first portion including a wall extending longitudinally from the surface and terminating in a substantially similar first opening at a distal end, and a second portion, including said wall, extending longitudinally from the first opening at the distal end and tapering toward a second opening at a further distal end, the first opening being wider than the second opening, a third portion, including said wall, extending longitudinally from the second opening toward a third opening at a still further distal end, the second opening and the third opening having a substantially similar cross sectional size, and a fourth portion, including said wall, extending longitudinally from the third opening and tapering toward a fourth opening at yet a further distal end, the fourth opening having a narrower cross sectional size than the third opening.