| 摘要 |
<p>A lighting system having a cathode for emitting electrons from an external surface, the cathode including a cathode sleeve and a cathode base hermetically sealed each to the other and defining a cathode internal chamber, the cathode internal chamber having a cathode gas composition contained therein at a predetermined pressure; a first anode extending internal of the cathode for heating the cathode thereby emitting electrons from the external surface; a second anode positionally located external of cathode for accelerating said electrons emitted from the cathode external surface; and a bulb member encompassing the cathode, the first anode and the second anode in a substantially hermetic seal, the bulb member having a predetermined gas composition contained therein, the gas composition atoms being ionized by the cathode emitted electrons, the gas composition ionized atoms radiating in the ultraviolet bandwidth of the electromagnetic spectrum, the bulb member being coated with a fluorescent material for intercepting ultraviolet energy responsive to the ionization of the gas composition atoms, the cathode sleeve member being a substantially cylindrically contoured member having a predetermined diameter.</p> |
