High vacuum lamp and getter means used to this end

Details High vacuum lamp and getter means used to this end High vacuum lamp and getter means used to this end

H - Electricity

01

J

313/110

H01J 61/26 (2006.01)

Patent

CA 1324634

ABSTRACT OF THE DISCLOSURE A lamp including an evacuated outer jacket, a light source capsule mounted within an evacuated outer jacket, and getter assembly disposed within the outer jacket is disclosed, the getter assembly includes a getter and protection device for protecting lamp parts, e.g., the inner surface of the outer jacket, during flashing of the getter. In a most preferred embodiment, the protection device is formed by a small glass envelope, preferably similar to a photoflash bulb envelope, having a small opening. A getter, such as a getter ring, typically used in the lighting art, is mounted within the bulb envelope. When the getter is activated, the metal vapor of the activated getter is caught inside this bulb envelope and condenses on the inside glass surface of the latter, the impurities within the outer jacket of the lamp diffuse through the opening in the bulb envelope of the protection device of the preferred embodiment and are absorbed by the getter. Getter assembly for use in lamp having an evacuated outer jacket, the getter assembly including a getter and a fully closed envelope surrounding the getter is also disclosed.

614872

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