公开(公告)号：US10761320B2

公开(公告)日：2020-09-01

申请号：US15775946

申请日：2016-11-29

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Brett J. Sitter ,  Matthew M. Philippi ,  Mary M. Pichotta ,  Chi Zhang ,  Daniel W. Hennen ,  Gary T. Boyd ,  Michael E. Lauters

IPC: G02B5/18 ,  G02B27/00 ,  G02B5/02 ,  B32B25/04 ,  G02B5/00

Abstract: An optical stack including a periodically varying optical film layer and a grating assembly for reducing moiré is described. The grating assembly includes first and second layers where an interface between the first and second layers define a grating having a peak to valley height and an index contrast. The index contrast multiplied by the peak to valley height may be between 150 nm and 350 nm and the grating has a pitch in the range of 2 micrometers to 50 micrometers. Each of the first and second layers may be viscoelastic or elastomeric adhesive layers, crosslinked resin layers, or soluble resin layers.

公开(公告)号：US20180329207A1

公开(公告)日：2018-11-15

申请号：US15775946

申请日：2016-11-29

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Brett J. Sitter ,  Matthew M. Philippi ,  Mary M. Pichotta ,  Chi Zhang ,  Daniel W. Hennen ,  Gary T. Boyd ,  Michael E. Lauters

IPC: G02B27/00 ,  B32B25/04 ,  G02B5/02 ,  G02B5/18 ,  G02B5/00

CPC classification number: G02B27/0018 ,  B32B25/042 ,  G02B5/003 ,  G02B5/0215 ,  G02B5/1861

Abstract: An optical stack including a periodically varying optical film layer and a grating assembly for reducing moiré is described. The grating assembly includes first and second layers where an interface between the first and second layers define a grating having a peak to valley height and an index contrast. The index contrast multiplied by the peak to valley height may be between 150 nm and 350 nm and the grating has a pitch in the range of 2 micrometers to 50 micrometers. Each of the first and second layers may be viscoelastic or elastomeric adhesive layers, crosslinked resin layers, or soluble resin layers.