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    • 4. 发明申请
    • ILLUMINATION PANEL AND DISPLAY
    • 照明面板和显示
    • US20110128471A1
    • 2011-06-02
    • US13002527
    • 2009-07-07
    • James Rowland SucklingTong ZhangDavid James Montgomery
    • James Rowland SucklingTong ZhangDavid James Montgomery
    • G02F1/1335F21V7/22
    • G02B6/0043G02B6/0041G02F1/133615
    • An illumination panel is provided, for example for use as a backlight for illuminating an at least partially transmissive display (1). The panel comprises a light source (18), for example in the form of a light emitting diode which emits light in a relatively narrow waveband. A light guide (3) receives the light from an edge surface and guides light by total internal reflection. Combined light extraction and phosphor elements (19) on at least one of the major surfaces of the light guide (3) permit extraction of the light but also convert at least some of the light from the light source (18) to a different visible waveband. By locating the combined phosphor and extraction features at least partially inside the lightguide (3) it is possible to control the angular distribution of the extracted light and, in particular, to arrange for the variation of intensity with angle of light extracted without wavelength conversion to be substantially the same as the variation of intensity with angle of light emitted with wavelength conversion.
    • 提供照明面板,例如用作用于照亮至少部分透射的显示器(1)的背光。 面板包括光源(18),例如以发射相对较窄波段的光的发光二极管的形式。 光导(3)从边缘表面接收光,并通过全内反射来引导光。 在光导(3)的至少一个主表面上的组合光提取和磷光体元件(19)允许提取光,但也将来自光源(18)的至少一些光转换成不同的可见光波段 。 通过将光源和提取特征至少部分地定位在光导(3)的内部,可以控制所提取的光的角分布,特别是设置强度的变化,而不是将波长转换为 与随波长转换发射的光的强度的变化基本相同。