Discharge lamp having cesium compound

Details Discharge lamp having cesium compound Discharge lamp having cesium compound

1995-05-30

1997-07-08

O'Shea, Sandra L.

Electric lamp and discharge devices

With gas or vapor

Three or more electrode discharge device

313596, 313601, H01J 1730, H01J 1746, H01J 6154

Patent

active

056464835

ABSTRACT:
A discharge lamp or an electrodeless discharge lamp including a discharge gas filled inside a bulb, an electrode part present inside the bulb for emitting thermoelectrons into the discharge gas, and a cesium compound placed in a position other than the electrode part inside the bulb. According to this configuration, this discharge lamp has a short starting delay time even at a low temperature including room temperature, without using any starting auxiliary light source or a radioactive material. The cesium compound is contained on the surface of a metal mesh which is fixed via a supporting arm in a position avoiding the electrode part inside the bulb. It is preferable that the cesium oxide is in contact with the discharge space. In this way, starting property can be improved without using any starting auxiliary light source or a radioactive material. The electrodeless discharge lamp has the cesium compound at an optional position in the discharge space.

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Journal of the Illuminating Engineering Society Article, Summer 1990 (pp. 76-83) --Titled Zaslavsky et al., "Improved Starting of the 100-W Metal Halide Lamp".

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