公开(公告)号：US09046637B1

公开(公告)日：2015-06-02

申请号：US14188687

申请日：2014-02-25

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Robert Bennett ,  David Scott Thompson ,  Gilles Benoit ,  John Wheatley ,  Karl J. L. Geisler

IPC: H01J61/30 ,  F21V8/00

CPC classification number: G02B6/0096 ,  G02B6/0038

Abstract: Lighting systems include a light-transmissive tube and a light source assembly disposed to inject light into a cavity defined by the tube. The cavity extends along a longitudinal axis. At least a portion of the tube includes an inner structured surface facing the cavity, and an outer structured surface facing away from the cavity. The inner structured surface is configured to direct a first portion of the injected light towards the outer structured surface, and a second portion of the injected light back into the cavity. The inner structured surface includes elongated first features and the outer structured surface includes elongated second features. At least one of the elongated first features and the elongated second features are oriented obliquely relative to the longitudinal axis such that they form respective helixes along the tube.

Abstract translation: 照明系统包括透光管和设置成将光注入由管限定的空腔中的光源组件。 空腔沿纵向轴线延伸。 管的至少一部分包括面向空腔的内部结构化表面和面向空腔的外部结构化表面。 内部结构化表面被构造成将注入的光的第一部分引向外部结构化表面，并将注入的光的第二部分引回空腔。 内部结构化表面包括细长的第一特征，并且外部结构化表面包括细长的第二特征。 细长的第一特征和细长的第二特征中的至少一个相对于纵向轴线倾斜地定向，使得它们沿着管形成相应的螺旋。