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    • 92. 发明申请
    • LIGHT EMITTING DEVICE AND BACKLIGHT SOURCE
    • 发光装置和背光源
    • US20160102816A1
    • 2016-04-14
    • US14707258
    • 2015-05-08
    • Hisense Electric Co., Ltd.
    • Xiaoping LIQiang ZHONGMingsheng QIAO
    • F21K99/00F21V5/04
    • F21V5/04G02B19/0052G02F2001/133607
    • The light emitting device includes a light emitting diode and an optical lens, the optical lens includes a light incidence surface and a light exit surface, the light incidence surface includes a first light incidence surface and a second light incidence surface, herein the ratios of the minimum ones to the maximum ones of the distances between respective points, on the first light incidence surface or the second light incidence surface, and the center of the light emission surface respectively belongs to [0.5, 0.7] or [0.683, 0.695]; and the convex surface includes a first light exit surface and a second light exit surface, herein the ratios of the minimum ones to the maximum ones of the distances between respective points, on the first light exit surface or the second light exit surface, and the center of the light emission surface respectively belongs to [0.771, 0.913], or [0.883, 0.921].
    • 发光器件包括发光二极管和光学透镜,光学透镜包括光入射表面和光出射表面,光入射表面包括第一光入射表面和第二光入射表面,这里的比例为 在第一光入射面或第二光入射面以及发光面的中心的各点之间的最大距离的最小值分别属于[0.5,0.7]或[0.683,0.695]。 凸表面包括第一光出射表面和第二光出射表面,这里是第一光出射表面或第二光出射表面上的各个点之间的最小值与最大值之间的比率,以及 光发射面的中心分别属于[0.771,0.913]或[0.883,0.921]。