Lighting device utilizing a double fresnel lens
    77.
    发明授权
    Lighting device utilizing a double fresnel lens 有权
    采用双菲涅耳透镜的照明装置

    公开(公告)号:US09464778B2

    公开(公告)日:2016-10-11

    申请号:US14527405

    申请日:2014-10-29

    Applicant: Cree, Inc.

    CPC classification number: F21V5/007 F21V5/045

    Abstract: According to one aspect, an optical lens includes a substrate having a first side and a second side opposite the first side. The optical lens includes a first pattern of Fresnel features having a first focal length disposed on the first side and a second pattern of Fresnel features having a second focal length disposed on the second side. The first pattern of Fresnel features is disposed perpendicular to the second pattern of Fresnel features, and the first focal length is different from the second focal length.

    Abstract translation: 根据一个方面,光学透镜包括具有第一侧和与第一侧相对的第二侧的基板。 光学透镜包括具有设置在第一侧上的第一焦距的菲涅耳特征的第一图案和设置在第二侧上的具有第二焦距的菲涅耳特征的第二图案。 菲涅耳特征的第一图案垂直于菲涅耳特征的第二图案设置,第一焦距与第二焦距不同。

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