| 摘要 |
<p>The invention relates to a high-pressure sodium discharge lamp provided with a discharge vessel (1) having a ceramic wall and enclosed with intervening space (8) by an outer bulb (6). The discharge vessel is provided with two electrodes (2, 3) whose respective tips have a mutual distance D. The discharge vessel has a substantially circular cross-section with an interior diameter di over the distance D. Under nominal operating conditions, according to the invention, the wall has a wall load of at least 60 W/cm<2>, the space (8) contains a gas filling, and D/di being > 6. <IMAGE></p> |
