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    • 5. 发明授权
    • Lighting apparatus
    • 照明设备
    • US09172006B2
    • 2015-10-27
    • US13583236
    • 2011-03-03
    • Rifat Ata Mustafa HikmetJan Cornelis KriegeJohannes Franciscus Maria CillessenRené Theodorus Wegh
    • Rifat Ata Mustafa HikmetJan Cornelis KriegeJohannes Franciscus Maria CillessenRené Theodorus Wegh
    • F21V9/16H01L33/50F21V3/04
    • H01L33/50F21V3/08F21V9/30H01L33/502Y10T29/49
    • The invention relates to a lighting apparatus comprising a conversion material (2) for converting primary light (4) into secondary light (5), wherein the conversion material (2) comprises converting photolummescent material (15), which degrades to non-converting photolummescent material over time when the conversion material (2) is illuminated by the primary light (4). The conversion material (2) is adapted such that, when the conversion material (2) is illuminated by the primary light (4), the relative decrease in concentration of the converting photolummescent material (15) within the conversion material (2) is larger than the relative decrease in intensity of the secondary light (5). This allows the lighting apparatus to provide an only slightly reduced absorbance of the primary light, even if a large part of the photolummescent material has been bleached, and thus a longer lifetime, with the same or a slightly reduced intensity of the secondary light.
    • 本发明涉及一种照明装置,其包括用于将初级光(4)转换成次级光(5)的转换材料(2),其中转换材料(2)包括转换光致发光材料(15),其降解为非转化的光致发光 当转换材料(2)被初级光(4)照亮时,材料随时间变化。 转换材料(2)适于使得当转换材料(2)被初级光(4)照射时,转换材料(2)内的转化光致发光材料(15)的浓度的相对降低较大 比二次光(5)的强度相对降低。 这使得照明装置即使大部分光致发光材料已被漂白,因此具有更长的使用寿命,二次光的强度相同或略微降低,从而仅提供初级光的仅略微降低的吸光度。