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Electric lamp having a fused silica glass envelope

阅读:919发布:2022-02-20

专利汇可以提供Electric lamp having a fused silica glass envelope专利检索,专利查询,专利分析的服务。并且An electric lamp comprises a light source within a glass envelope adapted to operate at temperatures above 800*C. under pressures ranging up to 100 atmospheres. The lamp may be a tungsten halide incandescent type or a discharge type such as a mercury vapor or metal halide lamp. The envelope is composed of a fused silica glass containing, on a cation mole percent basis, 0.01-1.0% of an additive selected from the group consisting of SnO2, GeO2, Fe2O3, WO3, MoO3 and Ta2O5.,下面是Electric lamp having a fused silica glass envelope专利的具体信息内容。

1. AN ELECTRIC LAMP CAPABLE OF OPERATION AT A TEMPERATURE OF 800*-1150*C. UNDER AN INTERNAL PRESSURE OF UP TO 100 ATMOSPHERE COMPRISING A LIGHT SOURCE WITHIN A GLASS ENVELOPE, SAID GLASS ENVELOPE BEING COLORLESS AND ULTRAVIOLET ABSORBING AND CONSISTING ESSENTIALLY OF A HIGH PURITY FUSED SILICA GLASS CONTAINING, AS AN ADDITIVE TO ITS COMPOSITION ON A CATION MOLE PERCENT BASIS, 0.01-1.0% OF AN OXIDE SELECTED FROM THE GROUP CONSISTING OF SNO2, GEO2, FE2O3, WO3, MOO3, AND TA2O5.
2. A high temperature electric lamp in accordance with claim 1 wherein the amount of oxide additive in the lamp envelope glass does not exceed 0.4 cation mole percent.
3. A high temperature electric lamp in accordance with claim 1 wherein the glass envelope is composed of a ''''dry'''' fused silica having a relatively low hydroxyl ion content as expressed by a beta content below 0.10.
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