公开(公告)号：US20180306964A1

公开(公告)日：2018-10-25

申请号：US15525405

申请日：2015-11-16

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Bing HAO ,  David A. ENDER

IPC: F21V8/00 ,  G09F13/02 ,  G09F19/12

CPC classification number: G02B6/0036 ,  G02B6/0061 ,  G09F13/02 ,  G09F19/12

Abstract: Optically transparent lightguides (200) including light extractors (230) with a maximum dimension of a projected area of each light extractor onto the lightguide less than 100 microns are disclosed. Each light extractor may be disposed in a different corresponding area cell (220) The plurality of light extractors extract light uniformly over the entire active region (210). Embodiments with a nearest neighbour distance of at least 100 microns and with an image behind the lightguide are also disclosed.