High-pressure sodium discharge lamp

Details High-pressure sodium discharge lamp High-pressure sodium discharge lamp

1991-02-13

1992-10-06

Yusko, Donald J.

Electric lamp and discharge devices

With gas or vapor

Envelope with particular structure

313 25, 313 17, 313620, 313643, H01J 6138, H01J 61073

Patent

active

051534827

ABSTRACT:
The invention relates to a high-pressure sodium discharge lamp provided with a discharge vessel having a ceramic wall and enclosed with intervening space by an outer bulb. The discharge vessel is provided with two electrodes whose respective tips have a mutual distance D. The discharge vessel has a substantially circular cross-section with an interior diameter d.sub.i over the distance D. Under nominal operating conditions, according to the invention, the wall has a wall load of at least 60 W/cm.sup.2, the space between the outer bulb and the discharge vessel contains a gas filling, and D/d.sub.i being >6.

REFERENCES:
patent: 4134039 (1979-01-01), Vida et al.
patent: 4490642 (1984-12-01), Dobrusskin et al.
patent: 4795943 (1989-01-01), Antonis
patent: 4864191 (1989-09-01), Van De Weijer et al.
patent: 4970431 (1990-11-01), Vegter et al.

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