GAS-DISCHARGE LIGHT SOURCE Russian patent published in 2003 - IPC

FIELD: lighting engineering; photogrammetric analyses. SUBSTANCE: electrical discharge takes place in discharge gap between high-voltage and grounded electrodes (cathode and anode) with gap width corresponding to original transversal dimensions of 0.05-0.2 mm. Discharge occurs in gas between two insulating walls spaced apart from this gap to ensure fast expansion of emitting area followed by fast cooling down of plasma. Working gas is pre-ionized in discharge gap by means of additional electrode electrically coupled with pulsed power supply and disposed on external surface of wall opposing light-emitting wall. Wall or walls are covered on side facing the gap with optically transparent material to augment plasma cooling upon completion of current growth. EFFECT: enhanced luminous intensity at minimal total length of light pulse. 3 cl, 1 dwg