公开(公告)号：EP2192428A1

公开(公告)日：2010-06-02

申请号：EP08831573.4

申请日：2008-09-19

Applicant: Toppan Printing Co., Ltd.

Inventor： YASHIKI, Kazuhiro ,  SHINDOU, Naoaki ,  ITOU, Noriyuki ,  IDE, Hidetaka ,  MINAMIKAWA, Naoki

IPC: G02B5/18 ,  B42D15/10 ,  G09F3/02

CPC classification number: G02B5/128 ,  B42D25/29 ,  B42D25/324 ,  B42D25/328 ,  B42D2033/04 ,  B42D2033/18 ,  B42D2035/24 ,  G02B3/0068

Abstract: A special visual effect is achieved. An optical device (1) includes a light-reflecting interface provided with a first relief structure including first recesses or protrusions arranged two-dimensionally, the first relief structure emitting a first diffracted light when illuminated with a light, and a light-transmitting interface disposed in front of the light-reflecting interface and having a reflectance smaller than that of the first interface, the light-transmitting interface being provided with a second relief structure including second recesses or protrusions arranged two-dimensionally, and the second relief structure emitting a second diffracted light when illuminated with the light.

Abstract translation: 实现了特殊的视觉效果。 光学装置（1）包括具有第一凸起结构的光反射界面，所述第一凸起结构包括二维布置的第一凹部或突出部，当用光照射时发射第一衍射光的第一凹凸结构和布置的透光界面 在光反射界面的前面，反射率小于第一界面的反射率，透光界面设置有包括二维布置的第二凹陷或凸起的第二凸起结构，而第二凹凸结构发射第二凹槽 用光照射时的衍射光。

公开(公告)号：EP2192428B1

公开(公告)日：2019-06-19

申请号：EP08831573.4

申请日：2008-09-19

Applicant: Toppan Printing Co., Ltd.

Inventor： YASHIKI, Kazuhiro ,  SHINDOU, Naoaki ,  ITOU, Noriyuki ,  IDE, Hidetaka ,  MINAMIKAWA, Naoki

IPC: G02B5/18 ,  G09F3/02 ,  B44F1/00