Low-pressure rare gas discharge lamp and method for lighting sam

Details Low-pressure rare gas discharge lamp and method for lighting sam Low-pressure rare gas discharge lamp and method for lighting sam

1990-06-13

1993-02-16

LaRoche, Eugene R.

Electric lamp and discharge devices

Electrode and shield structures

313489, 313577, 313635, 313643, 427106, 4271263, H01J 61067

Patent

active

051874156

ABSTRACT:
A low-pressure rare gas discharge lamp wherein a light emitting gas composed substantially 100% of rare gases is sealed in a bulb and light emitted is from the gas by electric discharge. An isolation film for the light emitting gas from the bulb is provided at least on the inner surface portion of the bulb which portion surrounds a positive column. In another embodiment, a hot cathode type low-pressure rare gas discharging fluorescent lamp includes a glass bulb, a pair of electrodes including an electrode acting as a hot cathode at least in a stable discharging state, the paired electrodes being provided within the glass bulb, a fluorescent substance layer formed on the inner surface of the glass bulb, and a light emitting gas sealed in the interior of the glass bulb. The fluorescent substance layer is rendered luminous by radiation emitted from the light emitting gas. A partial pressure of the sealed, light emitting gas is not higher than 5 Torr, and the light emitting gas includes at least krypton.

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