Collimator application for microchannel plate image intensifier resolution improvement
Abstract
A collimator is included in a microchannel plate image intensifier (MCPI). Collimators can be useful in improving resolution of MCPIs by eliminating the scattered electron problem and by limiting the transverse energy of electrons reaching the screen. Due to its optical absorption, a collimator will also increase the extinction ratio of an intensifier by approximately an order of magnitude. Additionally, the smooth surface of the collimator will permit a higher focusing field to be employed in the MCP-to-collimator region than is currently permitted in the MCP-to-screen region by the relatively rough and fragile aluminum layer covering the screen. Coating the MCP and collimator surfaces with aluminum oxide appears to permit additional significant increases in the field strength, resulting in better resolution.
- Inventors:
-
- Livermore, CA
- Issue Date:
- Research Org.:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 870320
- Patent Number(s):
- 5495141
- Application Number:
- 08/196,405
- Assignee:
- Regents of University of California (Oakland, CA)
- Patent Classifications (CPCs):
-
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01J - ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- DOE Contract Number:
- W-7405-ENG-48
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- collimator; application; microchannel; plate; image; intensifier; resolution; improvement; included; mcpi; collimators; useful; improving; mcpis; eliminating; scattered; electron; limiting; transverse; energy; electrons; reaching; screen; due; optical; absorption; increase; extinction; ratio; approximately; magnitude; additionally; smooth; surface; permit; focusing; field; employed; mcp-to-collimator; region; currently; permitted; mcp-to-screen; relatively; fragile; aluminum; layer; covering; coating; mcp; surfaces; oxide; appears; additional; significant; increases; strength; resulting; channel plate; significant increase; aluminum layer; image intensifier; transverse energy; optical absorption; smooth surface; aluminum oxide; field strength; microchannel plate; plate image; /313/
Citation Formats
Thomas, Stanley W. Collimator application for microchannel plate image intensifier resolution improvement. United States: N. p., 1996.
Web.
Thomas, Stanley W. Collimator application for microchannel plate image intensifier resolution improvement. United States.
Thomas, Stanley W. Tue .
"Collimator application for microchannel plate image intensifier resolution improvement". United States. https://www.osti.gov/servlets/purl/870320.
@article{osti_870320,
title = {Collimator application for microchannel plate image intensifier resolution improvement},
author = {Thomas, Stanley W},
abstractNote = {A collimator is included in a microchannel plate image intensifier (MCPI). Collimators can be useful in improving resolution of MCPIs by eliminating the scattered electron problem and by limiting the transverse energy of electrons reaching the screen. Due to its optical absorption, a collimator will also increase the extinction ratio of an intensifier by approximately an order of magnitude. Additionally, the smooth surface of the collimator will permit a higher focusing field to be employed in the MCP-to-collimator region than is currently permitted in the MCP-to-screen region by the relatively rough and fragile aluminum layer covering the screen. Coating the MCP and collimator surfaces with aluminum oxide appears to permit additional significant increases in the field strength, resulting in better resolution.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1996},
month = {2}
}