公开(公告)号：US11356649B2

公开(公告)日：2022-06-07

申请号：US17231542

申请日：2021-04-15

Applicant: TOPPAN PRINTING CO., LTD.

Inventor： Akihito Kagotani ,  Kozue Umeda ,  Soko Koda

IPC: H04N13/128 ,  H04N13/302 ,  G03H1/00 ,  G03H1/14

Abstract: An integrated three-dimensional display includes a recording surface which includes a calculated element region in which phase components of light from light converging points of a holographic reconstructed image are calculated, and a phase angle recorded area for recording a phase angle calculated based on the phase components. The phase angle recorded area includes a plurality of monochromatic regions having a uneven structure surface. The phase angle is recorded in an overlap area in which the calculated element region and the phase angle recorded area overlap each other. Light converges on the light converging points at specific distances from the recording surface, the specific distances being determined for the respective light converging points even when light reflected from the plurality of monochromatic regions converges.

公开(公告)号：US10647147B2

公开(公告)日：2020-05-12

申请号：US16196180

申请日：2018-11-20

Applicant: TOPPAN PRINTING CO., LTD.

Inventor： Kozue Umeda ,  Mihoko Okawa

IPC: B42D25/328 ,  B42D25/364 ,  G09F3/02 ,  B42D5/04 ,  G09F3/00 ,  B42D25/324 ,  B42D25/373 ,  G02B5/18 ,  G02B5/30

Abstract: A anti-counterfeiting medium includes a support substrate, an OVD forming layer, and a latent image layer in this order. The latent image layer has plural regions with optical axes of a birefringent material aligned in directions different from each other. The OVD forming layer includes an uneven-structure-forming layer is made up of a first region and a second region, and a reflecting layer. The first region is a region made up of a flat part and plural convexities or concavities. The second region is configured by a flat part. Each of the plural convexities and concavities has a 0.3 to 5 μm long side dimension and short side dimension and height or depth of 0.1 to 0.5 μm or less.