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    • 1. 发明授权
    • Low-pressure mercury vapor discharge lamp and compact fluorescent lamp
    • 低压汞蒸气放电灯和紧凑型荧光灯
    • US06583551B2
    • 2003-06-24
    • US09771874
    • 2001-01-29
    • Ingrid Josef Maria Snijkers-HendrickxRemy Cyrille BroersmaRene Jan Hendriks
    • Ingrid Josef Maria Snijkers-HendrickxRemy Cyrille BroersmaRene Jan Hendriks
    • H01J162
    • H01J61/72H01J61/302H01J61/35Y02B20/19
    • The present invention relates to an improved maintenance, low-pressure mercury vapor discharge lamp having a discharge vessel enclosing a discharge space provided with a filling of mercury and a rare gas in a gastight manner. The discharge vessel is made from a glass of essentially 60-80% by weight SiO2 and 10-20% by weight Na2O. Preferably, the composition of this so-called sodium-rich glass is made of 70-75% by weight SiO2, 15-18% by weight Na2O and 0.25-2% by weight K2O. At least a part of the inner surface of the discharge vessel is provided with a transparent layer having a borate or a phosphate of an alkaline-earth metal and/or of scandium, yttrium or another rare earth metal. Preferably, the alkaline-earth metal is calcium, strontium and/or barium. In a particularly preferred embodiment, the transparent layer is made of yttrium borate and strontium borate. Additionally, the transparent layer preferably has a thickness between 5 and 200 nm and has provided on it a luminescent layer.
    • 本发明涉及一种改进的维护性低压汞蒸气放电灯,其具有放电容器,该放电容器以气密的方式包围设置有汞和稀有气体的填充物的放电空间。 放电容器由基本上为60-80重量%的SiO 2和10-20重量%的Na 2 O的玻璃制成。 优选地,所谓的富钠玻璃的组成优选为70-75重量%的SiO 2,15-18重量%的Na 2 O和0.25-2重量%的K 2 O. 放电容器的内表面的至少一部分设置有具有硼酸盐或碱土金属和/或钪,钇或其它稀土金属的磷酸盐的透明层。 优选地,碱土金属是钙,锶和/或钡。 在特别优选的实施方案中,透明层由硼酸钇和硼酸锶制成。 此外,透明层的厚度优选为5〜200nm,在其上设置有发光层。