Patent ID: 8071932
Filing Date: 2011-12-06
Classification: H01J

Abstract:
1. An image intensifier device comprising: a microchannel plate (MCP); an anode positioned adjacent the MCP; a first conductive spacer including a top surface positioned to face the MCP and a bottom surface positioned to face the anode, wherein the MCP is disposed on the top surface of the first spacer for providing electrical contact to the MCP; a second ceramic spacer having a top surface and a bottom surface, wherein the bottom surface is positioned to face the top surface of the first spacer; and an electrical terminal positioned on the top surface of the second spacer, said electrical terminal positioned to contact the MCP for applying an electrical bias to the MCP; wherein the second spacer includes an angled surface that at least partially extends between the top surface and the bottom surface of the second spacer at a pre-determined angle with respect to the top surface of the second spacer; the angled surface extends from the top surface of the second spacer and intersects an intermediate surface that is defined between the top surface and the bottom surface of the second spacer, wherein the intermediate surface, the top surface and the bottom surface of the second spacer are substantially parallel with respect to one another; and a thickness dimension of the second spacer that is measured between the intermediate surface and the bottom surface of the second spacer is substantially equal to a thickness dimension of the MCP, and the intermediate surface and a top surface of the MCP are at the same elevation, and a lower surface of a conductive snap ring is positioned to engage both the top surface of the MCP and the intermediate surface of the second spacer along a single plane.