Study on Luminous Efficacy in Xenon Flat Lamp with Rapid Ramped Waveform

摘要

A 20% Xenon Flat Lamp with 1 mm plate gap is driven by square waves with two different ramp rates (dU/dt) for 7 V/ns and 0.7 V/ns. The surface discharge between the electrodes with a 4mm gap has been studied. . The luminance and luminous efficacy (EFF) are both improved in 7 V/ns. A maximum luminance and panel efficacy then is obtained of 10,000 cd/m2 and 13 lm/W, respectively. The research on efficacy concludes that the increase of luminous efficacy is mainly reached by improving electron heating efficiency.