公开(公告)号：US20180059294A1

公开(公告)日：2018-03-01

申请号：US15804883

申请日：2017-11-06

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Alan B. Campbell ,  Dale L. Ehnes ,  John F. Van Derlofske, III ,  Mark R. Dupre ,  Stephen J. Dreyer ,  Patrick H. Marushin ,  Todd M. Johnson ,  Bryan V. Hunt

IPC: G02B5/04 ,  F21V8/00 ,  G02F1/1335

CPC classification number: G02B5/045 ,  G02B6/0053 ,  G02F1/133615 ,  G02F2001/133607

Abstract: A light directing film includes a structured major surface with a plurality of microstructures extending along a first direction. Each microstructure has a first region and a second region different from the first region, a substantially constant height in the first region and a non-constant maximum height in the second region greater than the substantially constant height in the first region, and a same lateral cross sectional shape in the first region and the second region.

公开(公告)号：US10197713B2

公开(公告)日：2019-02-05

申请号：US15804883

申请日：2017-11-06

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Alan B. Campbell ,  Dale L. Ehnes ,  John F. Van Derlofske, III ,  Mark R. Dupre ,  Stephen J. Dreyer ,  Patrick H. Marushin ,  Todd M. Johnson ,  Bryan V. Hunt

IPC: G02B5/04 ,  F21V8/00 ,  G02F1/1335

Abstract: A light directing film includes a structured major surface with a plurality of microstructures extending along a first direction. Each microstructure has a first region and a second region different from the first region, a substantially constant height in the first region and a non-constant maximum height in the second region greater than the substantially constant height in the first region, and a same lateral cross sectional shape in the first region and the second region.