Metal vapor discharge lamp including an inner burner having tape

Details Metal vapor discharge lamp including an inner burner having tape Metal vapor discharge lamp including an inner burner having tape

1984-08-09

1986-11-25

Moore, David K.

Electric lamp and discharge devices

With gas or vapor

Having electrode lead-in or electrode support sealed to...

313634, H01J 6133

Patent

active

046251499

ABSTRACT:
A metal vapor discharge lamp has a light emitting tube of translucent ceramics which includes a straight tube section of a predetermined diameter and a pair of tube end sections having their diameter gradually decreased from the straight tube section. The light emitting tube is formed such that a height from a corresponding sealing member to a boundary of the straight tube section and tube end section is greater than a height from the sealing member to the lower end of a radiator section of a discharge electrode and that a minimum radius of the tube end section of the light emitting tube is greater than an outer radius of the radiator section of the discharge electrode by a difference of 1.5 mm or less left therebetween.

REFERENCES:
patent: 2761086 (1956-08-01), Noel et al.
patent: 3932782 (1976-01-01), Kopelman
patent: 4277715 (1981-07-01), Claassens et al.
patent: 4503356 (1985-03-01), Kobayashi et al.

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