Correction of the distortion of an image intensifier...

Details Correction of the distortion of an image intensifier... Correction of the distortion of an image intensifier...

2007-09-26

2010-06-01

Macchiarolo, Peter (Department: 2879)

Electric lamp and discharge devices

Photosensitive

Having phosphor screen

C313S1030CM, C250S2140VT

Reexamination Certificate

active

07728519

ABSTRACT:
The invention relates to the correction of the distortion of an image intensifier electron tube comprising an entry screen intended to receive what is called primary electromagnetic radiation and an exit screen emitting radiation dependent on the primary radiation, the entry screen including a photocathode that emits an electron beam in the tube toward the exit screen, the emission of the electron beam being dependent on the primary radiation. The entry screen furthermore includes a test pattern formed from a plurality of dots distributed over the entry screen, the test pattern comprising means for locally altering the electron beam without altering the primary radiation.

REFERENCES:
patent: 5338927 (1994-08-01), de Groot et al.
patent: 6194700 (2001-02-01), Pradere et al.
patent: 6960879 (2005-11-01), Koch et al.
patent: 7557503 (2009-07-01), Inagaki et al.
patent: 0554145 (1993-08-01), None
patent: 094965 (1999-10-01), None
patent: 02095477 (2002-11-01), None

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