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    • 1. 发明申请
    • LOW-PRESSURE GAS DISCHARGE LAMP WITH IMPROVED COLOR STABILITY
    • 低压气体放电灯具有改进的颜色稳定性
    • WO2009027919A3
    • 2009-05-28
    • PCT/IB2008053396
    • 2008-08-25
    • KONINKL PHILIPS ELECTRONICS NVVAN DIJK GERARDUS A RTUIN AAFKO HHUISMAN BART-HENDRIKSCHRAMA WOUTER J M
    • VAN DIJK GERARDUS A RTUIN AAFKO HHUISMAN BART-HENDRIKSCHRAMA WOUTER J M
    • C09K11/78C09K11/77
    • H01J61/70C09K11/7769C09K11/7787H01J61/44Y02B20/19
    • The invention relates to a low-pressure gas discharge lamp (10). The invention further relates to a compact fluorescent lamp and to a backlighting system comprising the low-pressure gas discharge lamp according to the invention. The low-pressure gas discharge lamp comprises a light-transmitting discharge vessel having discharge means (18) for maintaining a discharge emitting light substantially comprising ultraviolet light, a wall of the discharge vessel being provided with a luminescent layer (20) comprising a luminescent material for converting part of the ultraviolet light into visible light emitted by the low- pressure gas discharge lamp. The luminescent layer, in operation, has at least locally a temperature above 80 degrees Celsius and/or has at least locally a wall- load above 0.1 watt per square centimeter. The luminescent layer (20) further comprises a luminescent material (Y1-a-bLnaRb)2O3, where Ln is selected from a group comprising Gadolinium, Samarium, and Dysprosium, R is selected from a group comprising Europium, Terbium and Cerium, and a > 0.10 defining a contribution of Ln to a lattice of the luminescent material (Y1-a-bLnaRb)2O3. The effect achieved when using (Y1-a-bLnaRb)2O3 is that the low-pressure gas discharge lamp has improved color stability.
    • 本发明涉及一种低压气体放电灯(10)。 本发明还涉及紧凑型荧光灯和包括根据本发明的低压气体放电灯的背光系统。 低压气体放电灯包括具有用于保持基本上包括紫外光的放电发射光的放电装置(18)的透光放电容器,放电容器的壁设置有发光层(20),发光层包括发光材料 用于将部分紫外光转换成由低压气体放电灯发出的可见光。 在操作中,发光层至少局部地具有高于80摄氏度的温度和/或至少局部地具有高于0.1瓦/平方厘米的壁载荷。 发光层(20)还包含发光材料(Y1-a-bLnaRb)2O3,其中Ln选自钆,钐和镝,R选自铕,铽和铈,以及 > 0.10定义Ln对发光材料(Y1-a-bLnaRb)2O3的晶格的贡献。 使用(Y1-a-bLnaRb)2O3时的效果是低压气体放电灯具有改善的颜色稳定性。