LED LIGHT SOURCE WITH DIFFUSER
    4.
    发明申请

    公开(公告)号:US20180026168A1

    公开(公告)日:2018-01-25

    申请号:US15546909

    申请日:2016-02-12

    CPC classification number: H01L33/60 H01L25/0753 H01L33/56 H01L2933/0091

    Abstract: There is herein described a light source that homogenizes the light produced by a large area array of forward directed LEDs mounted on highly reflective substrate, while achieving a low-profile form factor and maintaining high efficacy. The LED light source employs a diffuser comprised of two diffusing layers: a low scattering diffusing layer bonded to the LEDs and a high scattering diffusing layer that is bonded to the low scattering diffusing layer. The LED light source achieves good diffuse illumination with a thin diffuser by making use of a light channeling effect between the highly reflective substrate and the high backscattering from the high scattering diffusing layer.

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