公开(公告)号：US20220382214A1

公开(公告)日：2022-12-01

申请号：US17879005

申请日：2022-08-02

Applicant: TOPPAN INC.

Inventor： Satoshi UCHIDA ,  Akihito KAGOTANI

IPC: G03H1/26 ,  G02B27/42 ,  B42D25/324 ,  B42D25/328

Abstract: An optical identifier including a recording surface, a plurality of deflection cells each of which has recorded thereon a range in which light to be diffracted is deflected, at least one spatial phase modulator which fills a space between the deflection cells on the recording surface, and a deposition layer which covers part or all of the recording surface. The deflection cells has a spatial frequency expressed in a form of a relief structure and are discretely formed on the recording surface at regular intervals away from each other. A variable color image is recorded by pixels defined by the deflection cells. The spatial phase modulator has thereon a distribution of phase differences recorded in a form of heights of the relief structure. The spatial phase modulator modulates a phase of light outputted from a point light source and displays a reproduced image.

公开(公告)号：US20220147780A1

公开(公告)日：2022-05-12

申请号：US17580182

申请日：2022-01-20

Applicant: TOPPAN INC.

Inventor： Akihito KAGOTANI ,  Satoshi UCHIDA ,  Soko KODA

IPC: G06K19/06 ,  G02B5/02

Abstract: An optical assembly includes a spacer layer which is translucent or transparent; an image forming reflector which has a reflective layer being formed at least in a first region of the spacer layer; and a protective layer which is laminated over the spacer layer and the image forming reflector and the protective layer being translucent or transparent. The spacer layer is made of a polyolefin or/and a polymer containing an aryl group. The image forming reflector includes a visible image which is authenticatable. The image forming reflector has an individual information record in which a code is stored in the form of a plurality of removed linear segments. The image forming reflector has white level regions and a black level region in planar view. Each of the white level regions has the removed linear segments formed therein. The black level region is interposed between the white level regions.