Electric lamp and discharge devices – With gas or vapor – Envelope with particular structure
Patent
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.
Nakayama Shiki
Nishiura Yoshiharu
Nohara Hiroshi
Sugimoto Kouichi
Takeda Kazuo
Guharay Karabi
Matsushita Electronics Corporation
Patel Vip
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