High-pressure gas discharge lamp and luminaire provided with said lamp

摘要

The high-pressure gas discharge lamp has an ovoidal discharge space with oppositely arranged rod electrodes having a electrode coils spaced from the tip ends of the electrode. The ratio between the electrode distance d and the largest diameter of the discharge space D lies between 0.75 and 1.25. The lamp has a comparatively high power of 1600-2000 W and a defined Br/I ratio of 1.5-4. When arranged transversely in a luminaire having a concave rotation-symmetrical reflector and a screen, the lamp produces an accurately defined light beam suitable for illumination of sports grounds.