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Heavily loaded metal halide discharge lamp

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专利汇可以提供Heavily loaded metal halide discharge lamp专利检索,专利查询,专利分析的服务。并且A metal halide lamp is operated at higher than its normal rated wattage in order to increase its light output and efficacy, i.e., lumens per watt. But the quantity of fill in the arc tube must be less than a critical amount in order to prevent constriction of the arc discharge. The critical amount of fill is that which results in a value of 0.1 for the ratio of arc discharge pinch force to arc discharge buoyant force.,下面是Heavily loaded metal halide discharge lamp专利的具体信息内容。

1. A heavily loaded metal halide arc discharge lamp of the type normally used for general illumination comprising a sealed light transparent arc tube having electrodes disposed therein and containing a fill including mercury and an additive, said additive including a metal halide, the quantity of additive being such that the ratio of arc discharge pinch force to arc discharge buoyant force, during normal lamp operation is less than 0.1, the wall loading at normal lamp operation being in excess of 14 watts per square centimeter of arc tube wall area.
2. The lamp of claim 1 wherein said additive includes scandium and sodium and wherein the total additive content is about 0.5 mg per cc of arc tube volume.
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