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    • 15. 发明授权
    • Illumination device and lens thereof
    • 照明装置及其透镜
    • US08684585B2
    • 2014-04-01
    • US13221932
    • 2011-08-31
    • Zhi-Ting YeKuo-Jui Huang
    • Zhi-Ting YeKuo-Jui Huang
    • F21V8/00F21V5/04F21V7/00
    • F21V5/04F21Y2115/10G02B5/0231G02B5/0257G02B19/0061G03B2215/0592
    • An illumination device and a lens thereof are provided. The lens includes a surrounding sidewall, a light-incident surface, a light-incident structure, and a light-emitting surface. The surrounding sidewall includes two planar portions opposite to each other and two arc-surface portions opposite to each other to surround a reference axis. The light-incident surface is located at a side of the surrounding sidewall to receive a light emitted from a point light source. The light-incident structure located on the light-incident surface includes a plurality of bar-shaped protrusions. Each bar-shaped protrusion includes a plurality of first light-diffusing surfaces not parallel to the light-incident surface. The light-emitting surface is located at the other side of the surrounding sidewall and is opposite to the light-incident surface. The light-emitting surface is substantially circular. A cross-section area of the lens gradually increases from the light-incident surface to the light-emitting surface.
    • 提供一种照明装置及其透镜。 透镜包括周围的侧壁,光入射表面,光入射结构和发光表面。 周围的侧壁包括彼此相对的两个平面部分和彼此相对的两个弧形表面部分,以围绕参考轴线。 光入射表面位于周围侧壁的一侧以接收从点光源发射的光。 位于光入射表面上的光入射结构包括多个条形突起。 每个条形突起包括不与光入射表面平行的多个第一光扩散表面。 发光表面位于周围侧壁的另一侧并与光入射表面相对。 发光面基本上是圆形的。 透镜的截面积从光入射面逐渐增加到发光面。