LIGHT-EMITTING APPARATUS
    1.
    发明申请
    LIGHT-EMITTING APPARATUS 审中-公开
    发光装置

    公开(公告)号:US20170051885A1

    公开(公告)日:2017-02-23

    申请号:US15206273

    申请日:2016-07-10

    CPC classification number: F21K9/64 F21V5/04 F21V9/30 F21Y2115/10 F21Y2115/30

    Abstract: A light-emitting apparatus includes an excitation light source that emits first light; a light-emitting device on an optical path of the first light, the light-emitting device emitting second light having a wavelength in air; and a first converging lens on an optical path of the second light. The light-emitting device comprises: a photoluminescent layer that emits the second light by being excited by the first light; and a light-transmissive layer on the photoluminescent layer. At least one of the photoluminescent layer and the light-transmissive layer has a surface structure comprising projections or recesses arranged perpendicular to a thickness direction of the photoluminescent layer. At least one of the photoluminescent layer and the light-transmissive layer has a light emitting surface perpendicular to the thickness direction, the second light emitted from the light emitting surface. The surface structure limits the directional angle of the second light emittied from the light emitting surface.

    Abstract translation: 发光装置包括发射第一光的激发光源; 在所述第一光的光路上的发光装置,所述发光装置发射在空气中具有波长的第二光; 以及在第二光的光路上的第一会聚透镜。 发光装置包括:通过被第一光激发而发射第二光的光致发光层; 和光致发光层上的透光层。 光致发光层和透光层中的至少一个具有包括垂直于光致发光层的厚度方向布置的突起或凹陷的表面结构。 光致发光层和透光层中的至少一个具有垂直于厚度方向的发光表面,从发光表面发射的第二光。 表面结构限制从发光表面发射的第二光的方向角。

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