DECORATIVE FILM ARTICLES UTILIZING FRESNEL LENS FILMS
    2.
    发明申请
    DECORATIVE FILM ARTICLES UTILIZING FRESNEL LENS FILMS 审中-公开
    装饰膜使用FRESNEL镜片膜

    公开(公告)号:US20140009838A1

    公开(公告)日:2014-01-09

    申请号:US13540741

    申请日:2012-07-03

    IPC分类号: G02B27/12 G02B5/02

    摘要: First and second optical films in a stack each have a structured surface defining extended Fresnel lenses. First and second Fresnel lenses of the respective first and second films extend generally parallel to different first and second in-plane axes respectively. The films may be attached together such that light transmitted by one film is intercepted by the other. The film stack may also include a diffuser disposed to scatter light transmitted by the optical film(s). Other disclosed decorative articles include an individual optical film having a structured surface with transmissive facets arranged in a cyclic slope sequence from substantially zero to a maximum positive slope to substantially zero to a maximum negative slope and back to substantially zero, the sequence repeating over some or all of the structured surface. The slope sequence may define alternating focusing and defocusing Fresnel lenses, and the Fresnel lenses may be extended and linear.

    摘要翻译: 堆叠中的第一和第二光学膜每个都具有限定延伸的菲涅尔透镜的结构化表面。 相应的第一和第二膜的第一和第二菲涅尔透镜分别平行于不同的第一和第二平面轴延伸。 膜可以附着在一起,使得由一个膜透射的光被另一个膜遮断。 薄膜叠层还可以包括漫射器,其设置成散射由光学薄膜透射的光。 其它公开的装饰品包括具有结构化表面的单个光学膜,该结构化表面具有布置成从基本上零到最大正斜率到基本上零到最大负斜率并且回到基本为零的循环斜率序列,该序列在一些或多个 所有的结构化表面。 斜率序列可以定义交替聚焦和散焦菲涅尔透镜,菲涅耳透镜可以是延伸和线性的。