公开(公告)号：EP3637172A1

公开(公告)日：2020-04-15

申请号：EP18813298.9

申请日：2018-06-06

Applicant: Toppan Printing Co., Ltd.

Inventor： TASHIRO, Tomoko ,  TODA, Toshiki ,  SUGIHARA, Keitaro

IPC: G02B27/22 ,  B44F7/00 ,  G02B5/08 ,  G09F19/12

Abstract: In an optical structure for displaying a stereoscopic frame image on a structure formation surface, a frame motif that displays a frame image in which reflection moves is formed on a structure formation surface, the frame motif is made up of a plurality of perforated reflecting segments, each including one or more first reflecting mirrors having a reflective layer uniformly tilted relative to the structure formation surface, the tilt angle of the first reflecting mirror is different between adjacent perforated reflecting segments so as to gradually change over a plurality of adjacent perforated reflecting segments, and at least one of the plurality of perforated reflecting segments surrounds an opening provided with no first reflecting mirror.

公开(公告)号：EP3731220A1

公开(公告)日：2020-10-28

申请号：EP18892403.9

申请日：2018-12-17

Applicant: Toppan Printing Co., Ltd.

Inventor： SUGIHARA, Keitaro ,  YAMAMOTO, Hanako ,  TASHIRO, Tomoko ,  YASHIKI, Kazuhiro

IPC: G09F19/14 ,  G02B5/08 ,  G02B5/22 ,  G02B5/26 ,  G02B5/28

Abstract: A display having high resistance to counterfeiting is provided. A display (1) includes a micro concavo-convex structure layer (4) on a predetermined reference surface (H), the micro concavo-convex structure layer (4) having a plurality of microstructures (4A) arranged on the reference surface (H). Each of the microstructures (4A) is formed of a prism structure made of a material that transmits light with a triangular cross-section having a first surface (4Aa) inclined relative to the reference surface (H) in side view, and a second surface (4Ab) having an inclination angle relative to the reference surface (H) such that the inclination angle is larger than an inclination angle of the first surface (4Aa) relative to the reference surface. A color layer 7 as an example of a functional layer is provided on the second surface (4Ab) of all or some of the plurality of microstructures (4A).

公开(公告)号：EP3770653A1

公开(公告)日：2021-01-27

申请号：EP19770923.1

申请日：2019-03-20

Applicant: Toppan Printing Co., Ltd.

Inventor： TASHIRO, Tomoko ,  SUGIHARA, Keitaro ,  YAMAMOTO, Hanako

IPC: G02B5/18

Abstract: An optical element includes a grating structure, and the grating structure includes a first grating structure and a second grating structure. A concavo-convex surface includes a first region in which the first grating structure is located, and a second region in which the second grating structure is located and which is located close to the first region in plan view, as viewed perpendicular to the first surface. An azimuth angle of the first grating structure and an azimuth angle of the second grating structure are equal to each other. The first grating structure and the second grating structure have a grating period in a range of 250 nm or more and 500 nm or less, and a difference between the grating period of the first grating structure and the grating period of the second grating structure is 20 nm or more.

公开(公告)号：EP3970984A1

公开(公告)日：2022-03-23

申请号：EP21198780.5

申请日：2017-07-25

Applicant: Toppan Printing Co., Ltd.

Inventor： TASHIRO, Tomoko ,  SUGIHARA, Keitaro ,  TODA, Toshiki

IPC: B42D25/324 ,  B42D25/328 ,  G09F19/12 ,  G09F19/14

Abstract: A display body (10) includes a display surface (10S) including a plurality of display region groups (11Sa, 11Sb, 11Sc,11Sd, 11Se). Each display region (11A) or pixel (11A) includes at least one reflection surface (11S) that is configured to reflect light incident on the display surface toward an area including a corresponding one of reflection directions that are associated with the respective display region groups. Each display region group is configured to form an image unique to the display region group in a corresponding one of the reflection directions through reflection of light on the reflection surfaces in the display region group. The display region groups are configured to form, in two adjacent ones of the reflection directions, different images that have a interrelation between each other.

公开(公告)号：EP3489936A1

公开(公告)日：2019-05-29

申请号：EP17834322.4

申请日：2017-07-25

Applicant: Toppan Printing Co., Ltd.

Inventor： TASHIRO, Tomoko ,  SUGIHARA, Keitaro ,  TODA, Toshiki

IPC: G09F19/12 ,  B42D25/328 ,  G09F19/14

Abstract: A display body includes a display surface including a plurality of display region groups. Each display region includes at least one reflection surface that is configured to reflect light incident on the display surface toward an area including a corresponding one of reflection directions that are associated with the respective display region groups. Each display region group is configured to form an image unique to the display region group in a corresponding one of the reflection directions through reflection of light on the reflection surfaces in the display region group. The display region groups are configured to form, in two adjacent ones of the reflection directions, different images that have a interrelation between each other.

公开(公告)号：EP3470893A1

公开(公告)日：2019-04-17

申请号：EP17810415.4

申请日：2017-06-08

Applicant: Toppan Printing Co., Ltd.

Inventor： TASHIRO, Tomoko ,  TODA, Toshiki ,  SUGIHARA, Keitaro

IPC: G02B5/18 ,  B42D25/328

Abstract: A display includes a plurality of pixels (11A) arranged in matrix. Each of the pixels (11A) includes a single reflecting surface (11S), and all the reflecting surfaces (11S) include a set of the reflecting surfaces (11S) that allow light incident in a predetermined direction to be reflected in a direction predefined for the respective reflecting surfaces (11S), so that light reflected by all the reflecting surfaces (11S) forms an image (PIC) which appears in a specific direction, which is a direction common to all the reflecting surfaces (11S).

公开(公告)号：EP3220171A1

公开(公告)日：2017-09-20

申请号：EP15858992.9

申请日：2015-11-10

Applicant: Toppan Printing Co., Ltd.

Inventor： YASHIKI, Kazuhiro ,  NAGANO, Akira ,  SUGIHARA, Keitaro ,  TASHIRO, Tomoko

IPC: G02B5/00 ,  B42D25/324 ,  G02B5/18 ,  G03H1/02 ,  G07D7/12 ,  G09F19/12

CPC classification number: B42D25/324 ,  B42D25/23 ,  B42D25/24 ,  B42D25/29 ,  B42D25/328 ,  B42D25/342 ,  B42D25/36 ,  G02B5/1828 ,  G02B5/1842 ,  G02B5/1876 ,  G02B27/2214 ,  G07D7/12

Abstract: There is provided a versatile optical element applicable both to an electrode layer required in a bank bill field and to an optical element required in an ID field. In an optical element (1) according to one embodiment of the present invention, a first layer (2) is arranged on a second layer (3) having a relief structure on a surface thereof, and a first region (4) and a second region (5) are provided. Electromagnetic waves incident at a preset specific angle from a side of the first layer (2) are totally reflected due to at least one of the relief structure in the first region (4) and a ratio of a refractive index of the second layer (3) with respect to a refractive index of the first layer (2), the electromagnetic waves incident at the specific angle from the side of the first layer (2) are not totally reflected but transmitted or refracted due to at least one of the relief structure in the second region (5) and the ratio of the refractive index of the second layer (3) with respect to the refractive index of the first layer (2), and only in case of observation performed from the specific angle on the first layer (2) side, the second region (5) has higher transparency than the first region (4), and a preset image is expressed by a transparency contrast therebetween.

Abstract translation: 提供了适用于银行票据领域中所需的电极层和ID领域中所需的光学元件的通用光学元件。 在根据本发明的一个实施例的光学元件（1）中，第一层（2）布置在其表面上具有浮雕结构的第二层（3）上，并且第一区域（4）和第二区域 区域（5）。 由于第一区域（4）中的至少一个浮雕结构和第二层（3）的折射率的比率，从第一层（2）的一侧以预设特定角度入射的电磁波被全反射 ）相对于第一层（2）的折射率，从第一层（2）侧以特定角度入射的电磁波没有被全反射，而是由于至少一个凹凸结构而被透射或折射 在第二区域（5）中以及第二层（3）的折射率相对于第一层（2）的折射率的比率，并且仅在从第一层上的特定角度进行观察的情况下 （2）侧，第二区域（5）比第一区域（4）具有更高的透明度，并且通过其间的透明度对比表示预设图像。