Electric lamp and discharge devices: systems – Cathode ray tube circuits – With radiant energy sensitive control means
Patent
1992-03-25
1994-08-02
Issing, Gregory C.
Electric lamp and discharge devices: systems
Cathode ray tube circuits
With radiant energy sensitive control means
348189, H01J 3126, H04N 1702
Patent
active
053349113
ABSTRACT:
The invention relates to a method and a device for measuring a luminescence distribution within a beam spot of an electron beam irradiated on a tube surface of a color cathode ray tube. The measuring region is fixed within the specific fluorescent substance of the tube surface. The irradiated locations of the electron beam are variably changed, satisfying the condition that the beam spot contains the measurement region. The luminescent brightness of the measurement region is measured at each irradiated location of the electron beam. Furthermore, the luminescence distribution of the beam spot is determined based on each luminescent brightness.
REFERENCES:
patent: 2595646 (1952-05-01), Doba, Jr. et al.
patent: 4439735 (1984-03-01), Alvite et al.
patent: 4602272 (1986-07-01), Duschl
Issing Gregory C.
Mitsubishi Denki & Kabushiki Kaisha
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