Metal halide lamp with specific dimension of the discharge tube

Details Metal halide lamp with specific dimension of the discharge tube Metal halide lamp with specific dimension of the discharge tube

1998-08-27

2000-10-24

Patel, Vip

Electric lamp and discharge devices

With gas or vapor

Envelope with particular structure

313550, 313637, H01J 1716, H01J 6130

Patent

active

061372293

ABSTRACT:
A metal halide lamp comprises a discharge tube of transparent ceramic in which a discharge metal is sealed, the discharge tube having a main cylindrical portion, ring portions provided at both ends of the main cylindrical portion, and tubular cylindrical portions provided at the ring portions; and a pair of electrodes inside the discharge tube; wherein a wall thickness .alpha. (in mm) of the main cylindrical portion satisfies the relation

REFERENCES:
patent: 4734612 (1988-03-01), Sasaki et al.
patent: 4749905 (1988-06-01), Mori et al.
patent: 5424609 (1995-06-01), Geven et al.

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