Low pressure gas discharge lamp with increased end illumination

Details Low pressure gas discharge lamp with increased end illumination Low pressure gas discharge lamp with increased end illumination

1980-05-19

1982-05-11

La Roche, Eugene R.

Electric lamp and discharge devices: systems

Combined load device or load device temperature modifying...

Filament or electric heater in series with a discharge...

313488, 313492, 313216, 315 67, 315 98, 315105, 315DIG1, H05B 3500, H01J 6196

Patent

active

043296220

ABSTRACT:
A low pressure gas discharge lamp is provided with a pair of high power incandescent electrodes to increase output illumination at the lamp ends. In an alternate construction, the electrodes are of high power, low emissivity and are electrically connected to a second pair of high emissivity electrodes which provide the means for enabling the mercury discharge. With this second construction, the low emissivity electrodes can act as ballast for the circuit.

REFERENCES:
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patent: 2605432 (1952-07-01), Smith
patent: 2654042 (1953-09-01), Clarke et al.
patent: 3089972 (1963-05-01), Larson et al.
patent: 3458757 (1967-03-01), Dubs
patent: 3521122 (1970-07-01), Peek, Jr.
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patent: 3733599 (1973-05-01), Fantozzi
patent: 3851209 (1974-11-01), Murakami et al.
patent: 3882349 (1975-05-01), Holz et al.
patent: 4051407 (1977-09-01), Van der Werf et al.
patent: 4140385 (1979-02-01), Shaw et al.
patent: 4155758 (1979-05-01), Evans et al.

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