公开(公告)号：US20180156957A1

公开(公告)日：2018-06-07

申请号：US15565199

申请日：2016-03-28

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Jeremy K. Larsen ,  Bing Hao ,  David A. Ender ,  Tao Liu ,  Olester Benson ,  Joseph V. Crimando ,  Raveesh K. Shenoy ,  John C. Schultz

IPC: F21V8/00

CPC classification number: G02B6/006 ,  B29D11/00663 ,  B29D11/0073 ,  G02B6/0036 ,  G02B6/0038 ,  G02B6/0053 ,  G02B6/0055 ,  G02B6/0061

Abstract: Lightguides and methods for making and using the same are disclosed. A structured layer is provided with light extractors formed on a structured surface thereof. In some cases, the structured layer is removably laminated onto a substrate to provide uniform light extraction. In some cases, indicia are cut out of the structured layer and laminated onto the substrate. In some cases, the structured surface of the structured layer is selectively filled to form a pattern for light extraction. In some cases, a tool for producing a structured layer has a region of structures selectively filled to form a pattern for light extraction on the produced structured layer.