公开(公告)号：US20230400606A1

公开(公告)日：2023-12-14

申请号：US18250293

申请日：2021-10-20

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Adam T. Ringberg ,  Vivian W. Jones ,  James A. Phipps ,  Tri D. Pham ,  Przemyslaw P. Markowicz ,  Mark A. Roehrig ,  Stephen P. Maki ,  Bing Hao ,  David J. Rowe ,  Serena L. Mollenhauer ,  Mikhail A. Belkin ,  Zhaohui Yang ,  Jathan D. Edwards

IPC: G02B3/00 ,  G02B5/00

CPC classification number: G02B3/0056 ,  G02B5/005

Abstract: An optical construction includes a lens layer and optically opaque first and second mask layers. The lens layer has a first major surface including a plurality of microlenses arranged along orthogonal first and second directions. The first and second mask layers are spaced apart from the first major surface and define respective pluralities of through first and second openings therein arranged along the first and second directions. The first mask layer is disposed between the structured first major surface and the second mask layer. There is a one-to-one correspondence between the microlenses and the first and second openings. The optical construction includes an intermediate layer disposed between the structured first major surface and the first mask layer and including an undulating second major surface facing, and in substantial registration with, an undulating third major surface of first mask layer so as to define a substantially uniform spacing therebetween.