Composite light source

Details Composite light source Composite light source

1984-05-03

1986-09-09

Nelms, David C.

Electric lamp and discharge devices

With optical device or special ray transmissive envelope

Plural diverse optical devices

313 25, 313580, 313637, H01J 516, H01J 6140, H01K 126

Patent

active

046111433

ABSTRACT:
An improved composite light source utilizing light from an arc discharge in a deuterium gas atmosphere and that from a tungsten lamp. The composite light source comprises a sealed envelope having a light emitting window made of quartz, in which deuterium gas is filled, an electrode structure to cause an arc discharge in the deuterium gas atmosphere to occur, and a tungsten lamp. The light emitting window, an aperture of a focusing plate for forming an arc discharge, an aperture of the anode, and the filament of the tungsten lamp are sequentially arranged in line at their centers. The composite light source has the optical means to focus the light beam emitted from the tungsten lamp onto the aperture of the focusing plate for forming the arc discharge. In the present invention, useless power consumption to elevate the temperature within the tungsten lamp can be reduced. It extends the life of the light source improving the efficiency of light emission.

REFERENCES:
patent: 1961964 (1934-06-01), Dodge
patent: 2064252 (1936-12-01), Fortney
patent: 4433265 (1984-02-01), Fischer et al.

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