Radiant energy – Ionic separation or analysis – Static field-type ion path-bending selecting means
Patent
1981-05-28
1983-11-22
Nelms, David C.
Radiant energy
Ionic separation or analysis
Static field-type ion path-bending selecting means
250205, 430 24, G03B 4100
Patent
active
044165218
ABSTRACT:
A system for determining the exposure time required for a lighthouse to expose the screen of a television panel in accordance with the light transmission characteristics of the shadow mask includes means for providing the actual light transmission characteristics of the shadow mask. The minimum and maximum acceptable transmission values are subtracted to form a transmission range. The actual transmission characteristics and the minimum transmission value are combined to provide a transmission difference signal. The transmission difference and the transmission range are converted into a ratio which is used to determine a transmission percentage. The percentage is combined with a maximum transmission time to establish the exposure time.
REFERENCES:
patent: 4053906 (1977-10-01), Schultz
patent: 4059834 (1977-11-01), Hosokoshi et al.
patent: 4256390 (1981-03-01), Fisher et al.
Alvero Ernesto J.
Kelly William R.
Hallacher Lester L.
Irlbeck Dennis H.
Nelms David C.
RCA Corporation
Westin Edward P.
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