Patent ID: 11948786
Assignee: ELBIT SYSTEMS OF AMERICA, LLC
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  C | IPC C  G  H

Claim 0:
1. A night vision system, comprising:
an image intensifier tube placed between a lens and an eyepiece, wherein the image intensifier tube comprises:
a photocathode;
a phosphor covered anode; and
a microchannel plate arranged a spaced distance between the photocathode and the phosphor covered anode;
wherein the microchannel plate comprises a spaced plurality of channel openings with circular cross sections extending from an input side of the microchannel plate facing the photocathode through to an output side of the microchannel plate;
wherein the channel openings are funnel shaped channel openings;
wherein the channel openings have a have a channel bias angle taken along the central axis of the channel openings;
wherein the microchannel plate has an un-shaded side corresponding with an inner surface of the channel openings that is visible from a line of sight perpendicular to the normal of the input side;
wherein the microchannel plate has a shaded side corresponding with an inner surface of the channel openings that is not visible from a line of sight perpendicular to the normal of the input side; and
wherein a first side of the shaded side includes contact metal to draw first strike electrons produced from a second side of the channel openings radially opposite the first side.