Electric lamp and discharge devices – With magnetic device – With envelope
Patent
1981-06-23
1984-02-28
Demeo, Palmer C.
Electric lamp and discharge devices
With magnetic device
With envelope
313485, 313111, 362 84, 362217, 362255, 339 1L, H01J 150, F21V 916, F21M 314, H01R 3900
Patent
active
044343850
ABSTRACT:
A discharge lamp device wherein discharging zone within a tubular discharge lamp is caused to exist as selectively biased with respect to the axis of the lamp to render the light distributing characteristic non-uniform in the circumferential direction of the lamp and, utilizing such biased discharging zone, a light of selective color or color tone dependent on a color or color tone determining material disposed along the biased zone is provided. The discharging zone biasing is realized specifically preferably by an electromagnetic means.
REFERENCES:
patent: 749791 (1904-01-01), Hewitt
patent: 1935294 (1933-11-01), Jacquelet et al.
patent: 2299720 (1942-10-01), Holman
patent: 3290538 (1966-12-01), Larson et al.
patent: 3676728 (1972-07-01), Schreurs
patent: 4079288 (1978-03-01), Maloney et al.
patent: 4341979 (1982-07-01), Gross et al.
Touho Makoto
Wada Shigeaki
Yamamoto Minoru
DeMeo Palmer C.
Matsushita Electric & Works Ltd.
O'Shea Sandra L.
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