Title:
【発明の名称】ナイト・ビジョン・デバイス及び方法
Document Type and Number:
Japanese Patent JP2003520389
Kind Code:
A
Abstract:
A night vision device (10) with an image intensifier tube (14) includes an improved microchannel plate (22) which has an extraordinarily low indigenous population of gas molecules. Because of this low population of gas molecules, positive ions produced from these gas molecules in the high voltage operating environment of the image intensifier tube (14) are of such a low number that the image intensifier tube (14) will operate for a satisfactory service life even though the microchannel plate (22) has no ion barrier film. The microchannel plate (22) is also spaced much closer to a photocathode (20) of the image intensifier tube (14) than has heretofore been possible. Thus, improved gain and reduction or elimination of image halo also results from the present invention.
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Inventors:
Iosue, Michael
Application Number:
JP2000599058A
Publication Date:
July 02, 2003
Filing Date:
January 24, 2000
Export Citation:
Assignee:
Lytton Systems, Inc.
International Classes:
G01T1/00; H01J9/12; H01J9/26; H01J9/38; H01J9/40; H01J31/50; H01J43/04; H04N5/30; G21K4/00; (IPC1-7): H01J31/50; H01J9/12; H01J9/26; H01J9/38; H01J9/40; H04N5/30
Domestic Patent References:
| JPH06267466A | 1994-09-22 | |||
| JPH02291658A | 1990-12-03 |
Foreign References:
| US5493169A | 1996-02-20 | |||
| US5883380A | 1999-03-16 | |||
| US4142101A | 1979-02-27 |
Attorney, Agent or Firm:
Sumio Takeuchi (1 outside)