公开(公告)号：US12248218B2

公开(公告)日：2025-03-11

申请号：US17597446

申请日：2020-07-20

Applicant: ROLIC TECHNOLOGIES AG

Inventor： David Pires ,  Richard Frantz

IPC: G02F1/13363 ,  G02F1/1337

Abstract: The present invention relates to material compositions and methods for generating photo-alignable positive c-plate retarders. Because a planar alignment direction can be induced in the surface of the above c-plate retarder by exposure to polarized light, a slave material can be aligned on the surface of the c-plate retarder with a defined azimuthal orientation direction, without the need of an additional orientation layer.

公开(公告)号：US12259569B2

公开(公告)日：2025-03-25

申请号：US18418657

申请日：2024-01-22

Applicant: ROLIC TECHNOLOGIES AG

Inventor： David Pires ,  Mohammed Ibn-Elhaj

IPC: G02B5/02 ,  B42D25/23 ,  B42D25/29 ,  B42D25/328 ,  B42D25/355 ,  B42D25/364 ,  G03H1/00 ,  G03H1/02 ,  G06K19/06 ,  G06K19/16 ,  G07D7/00

Abstract: Optical elements with anisotropic, patterned surface relief microstructures in which information is encoded in the distribution of the orientation of different zones. From the analysis of the distribution of the light scattered from the element, the orientation distribution in the element and therefore the encoded information can be evaluated. The elements are particularly useful for securing documents and articles against counterfeiting and falsification.

公开(公告)号：US11921303B2

公开(公告)日：2024-03-05

申请号：US17182622

申请日：2021-02-23

Applicant: ROLIC TECHNOLOGIES AG

Inventor： David Pires ,  Mohammed Ibn-Elhaj

IPC: G02B5/02 ,  B42D25/23 ,  B42D25/29 ,  B42D25/328 ,  B42D25/355 ,  B42D25/364 ,  G03H1/00 ,  G03H1/02 ,  G06K19/06 ,  G06K19/16 ,  G07D7/00

CPC classification number: G02B5/0257 ,  B42D25/23 ,  B42D25/29 ,  B42D25/328 ,  B42D25/355 ,  B42D25/364 ,  G02B5/0252 ,  G03H1/0011 ,  G03H1/0244 ,  G06K19/06009 ,  G06K19/06037 ,  G06K19/16 ,  G07D7/0032

Abstract: Optical elements with anisotropic, patterned surface relief microstructures in which information is encoded in the distribution of the orientation of different zones. From the analysis of the distribution of the light scattered from the element, the orientation distribution in the element and therefore the encoded information can be evaluated. The elements are particularly useful for securing documents and articles against counterfeiting and falsification.