Low-pressure mercury-vapor discharge lamp, and method of placing

Electric lamp and discharge devices – Having vapor generating material – Mercury vapor material

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313490, 445 9, H01J 6124, H01J 900

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active

057571295

ABSTRACT:
A low-pressure mercury-vapor discharge lamp, which is equipped with Hg or amalgam, has a pumping tube opening (4) with constricted cross-section or lumen. A solid body in the pumping tube (3) prevents the mercury from emerging into the discharge space. At the same time, the particular shape of the constriction and of the solid body, respectively, makes it possible for Hg vapor to diffuse through-passages between the pumping tube and the solid body into discharge vessel.

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Patent Abstracts of Japan, JP 60-218757, "Low Pressure Mercury-Vapor Elecc-Discharge Lamp", Mar. 18, 1986, vol. 10, No. 69 (E-389).
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"Neues aus der Technik" (Technology News), Feb. 1986.

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