公开(公告)号：US20160001585A1

公开(公告)日：2016-01-07

申请号：US14396233

申请日：2012-04-25

申请人： Shinichiro SUZUKI

发明人： Shinichiro SUZUKI

IPC分类号： B42D25/328 ,  G02B5/18

CPC分类号： B42D25/328 ,  B42D25/00 ,  B42D25/29 ,  B42D2035/14 ,  G02B5/1809 ,  G02B5/1823 ,  G02B5/1828 ,  G02B5/1861

摘要： It is an object of the invention to provide a diffraction grating recording medium that enhances the ability to prevent forgery and make security more reliable.A diffraction grating recording medium 3 comprises a first recording region 31 including viewing image unit cells 11a, 12a, 13a having a light diffraction structure, and a second recording region 32 including hidden image unit cells 2a. The viewing image unit cells of the first recording region 31 has a grating pitch more than the wavelength of visible light, and the hidden image unit cells of the second recording region 32 has a grating pitch less than the wavelength of visible light.

摘要翻译： 本发明的目的是提供一种提高防伪的能力并使安全性更可靠的衍射光栅记录介质。 衍射光栅记录介质3包括包括具有光衍射结构的观看图像单元单元11a，12a，13a的第一记录区域31和包括隐藏图像单元单元2a的第二记录区域32。 第一记录区域31的观看图像单位单元具有比可见光的波长更大的光栅间距，并且第二记录区域32的隐藏图像单位单元具有小于可见光波长的光栅间距。