Patent ID: 9666425
Date: 2017-05-30
CPC Classifications: H01J

Claim:
1. A gas discharge lamp comprising: an inner bulb with a quartz glass discharge vessel and a first sealing section and a second sealing section arranged on the discharge vessel, a first electrode and a second electrode protruding from the respective first and second sealing sections into the discharge vessel which are each electrically connected in the respective first and second sealing sections with a conductor in order to supply current to the first and the second electrodes, an outer bulb which surrounds the discharge vessel leaving a cavity between the discharge vessel and the outer bulb, and a unitary conductive ring coating, the unitary conductive ring being arranged potential-free in surrounding relation about at least a portion of the first sealing section and in spaced relation from the discharge vessel on an outside of the inner bulb, said unitary conductive ring coating on said first sealing section insulated from said second sealing section, wherein the second sealing section has no conductive ring thereabout, the first sealing section ring, on application of a voltage to the first and the second electrodes, influencing the electrical field present in the area of the first electrode such that a discharge arc travels from the first electrode first in the direction of a section of a wall of the discharge vessel adjacent to the first electrode and then along the wall toward the second electrode.