Title:
セキュリティデバイス及びその製造方法
Document Type and Number:
Japanese Patent JP6474807
Kind Code:
B2
Abstract:
A security device has: an array of focusing elements on a grid; and an array of image elements overlapping the focusing elements array and arranged based on a repeating unit cell defining image element positions. The unit cell periodicity is substantially the same as the grid's. Each position is assigned to carry an image element of a respective corresponding image. Dependent on angle, the focusing elements array directs light from selected positions, as the device is tilted different ones of the respective images are displayed by the elements at the selected positions in combination, sequentially. Each unit cell center area, larger than each outer area, is assigned to carry element(s) of a corresponding center image, the outer areas assigned to carry element(s) of other respective images, such that the range of viewing angles over which the center image is displayed is greater than that over which each other image is.
Inventors:
Brian holmes
Application Number:
JP2016528604A
Publication Date:
February 27, 2019
Filing Date:
July 25, 2014
Export Citation:
Assignee:
De La Ryu International Limited
International Classes:
G09F19/12; B41M3/14; B42D25/324; B42D25/328; G02B3/00; G02B3/06; G02B5/18; G07D7/12; G07D7/207
Foreign References:
| GB2490780A | ||||
| DE102008029638A1 | ||||
| US20110109078 | ||||
| US6995914 | ||||
| US6369949 | ||||
| US20120127571 | ||||
| WO2005052650A2 | ||||
| US6483644 | ||||
| WO2011051669A1 |
Attorney, Agent or Firm:
Atsushi Aoki
Takashi Ishida
Tetsuji Koga
Satoshi Deno
Naori Kota
Toko Saito
Takashi Ishida
Tetsuji Koga
Satoshi Deno
Naori Kota
Toko Saito