High-pressure gas discharge lamp and luminaire provided with sai

Details High-pressure gas discharge lamp and luminaire provided with sai High-pressure gas discharge lamp and luminaire provided with sai

1988-08-26

1990-05-29

Wieder, Kenneth

Electric lamp and discharge devices

With optical device or special ray transmissive envelope

Reflector

313117, 313620, 313638, 362296, 362350, H01J 61073, H01J 6120

Patent

active

049298631

ABSTRACT:
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.

REFERENCES:
patent: 4161672 (1979-07-01), Cap et al.
patent: 4171498 (1979-10-01), Fromm et al.
patent: 4293901 (1981-10-01), Hernandez
patent: 4345178 (1982-08-01), Pappas et al.

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