公开(公告)号：US11155113B2

公开(公告)日：2021-10-26

申请号：US16754317

申请日：2018-11-02

Applicant: Agency for Science, Technology and Research

Inventor： Kun Huang ,  Jinghua Teng ,  Xiao Ming Goh ,  Junhao Shawn Tan

IPC: B42D25/328 ,  G03H1/02 ,  G06K19/16 ,  B42D25/373 ,  B42D25/41 ,  B42D25/30 ,  G06N3/12 ,  G03H1/22 ,  G03H1/00

Abstract: There is provided a holographic security element including a substrate; and an array of nano-reflectors configured to form a pattern on the substrate and to generate a holographic image corresponding to the pattern at a predetermined distance from the substrate when irradiated with a predetermined light source. In particular, the array of nano-reflectors is configured to generate the holographic image at the predetermined distance to have a size that is larger than a size of the pattern. There is also provided a method of forming the holographic security element, and an article having one or more holographic security elements incorporated therein.

公开(公告)号：US20200331283A1

公开(公告)日：2020-10-22

申请号：US16754317

申请日：2018-11-02

Applicant: Agency for Science, Technology and Research

Inventor： Kun Huang ,  Jinghua Teng ,  Xiao Ming Goh ,  Junhao Shawn Tan

IPC: B42D25/328 ,  G03H1/02 ,  G06K19/16

Abstract: There is provided a holographic security element including a substrate; and an array of nano-reflectors configured to form a pattern on the substrate and to generate a holographic image corresponding to the pattern at a predetermined distance from the substrate when irradiated with a predetermined light source. In particular, the array of nano-reflectors is configured to generate the holographic image at the predetermined distance to have a size that is larger than a size of the pattern. There is also provided a method of forming the holographic security element, and an article having one or more holographic security elements incorporated therein.