Electric lamp and discharge devices – With gas or vapor – Envelope with particular structure
Reexamination Certificate
2006-01-31
2006-01-31
Santiago, Mariceli (Department: 2879)
Electric lamp and discharge devices
With gas or vapor
Envelope with particular structure
C313S634000, C313S493000
Reexamination Certificate
active
06992446
ABSTRACT:
A halogen lamp of a 12V type including: a glass part, a portion of which is a light emitting portion having a space therein and the rest of which is a sealing portion, both portions being made of quartz glass; an infrared reflective coating formed to cover an outer surface of the glass part; a filament which, supported by the sealing portion, is provided in the inner space of the light emitting portion; a molybdenum foil which is embedded in the sealing portion and is electrically connected to the filament; and a power supply line, one end of which is connected to the molybdenum foil, the other end exposed to outside. The halogen lamp satisfies 450 mm2≦Sb≦650 mm2and Se≧−0.35Sb+520, where Sb and Se designate outer surface areas of the light emitting portion and the sealing portion, respectively.
REFERENCES:
patent: 4998036 (1991-03-01), Matsuura et al.
patent: 5138218 (1992-08-01), Honda et al.
patent: 5811934 (1998-09-01), Bunk et al.
patent: 10-501368 (1998-02-01), None
Hashimoto Naotaka
Ikeda Taku
Shibagaki Ichiro
Takeuchi Ichiro
Matsushita Electric - Industrial Co., Ltd.
Perry Anthony
Santiago Mariceli
Ushio Denki Kabushiki Kaisha
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