Title:
Security device
Document Type and Number:
Japanese Patent JP6046703
Kind Code:
B2
Abstract:
A security device has a lenticular device including an array of lenticular focusing elements; a corresponding array of image strips sets, the sets having substantially the same periodicity as, or an integral multiple of the periodicity of, the array of focusing elements. The strips are formed and the focusing elements located relative to the strips such that at each of a plurality of viewing angles, a respective one strip from each set is viewed in response to incident light falling on a respective focusing element. The strips are constructed such that the device presents a cyclically repeating sequence of images as the device is viewed at successive viewing angles, the image sequence including a change in form of an image between a first and second form and then a reversal of the sequence back to the first form, the combined image sequences presenting a contiguous variation in the image form.
Inventors:
Brian william homes
Application Number:
JP2014509810A
Publication Date:
December 21, 2016
Filing Date:
May 03, 2012
Export Citation:
Assignee:
De La Ryu International Limited
International Classes:
B42D25/30; B42D25/324; B42D25/328; B42D25/342; B42D25/369; G02B30/27
Foreign References:
| WO2011051670A1 | ||||
| WO2011051669A1 | ||||
| WO2011051668A1 | ||||
| US6369949 |
Attorney, Agent or Firm:
Atsushi Aoki
Jun Tsuruta
Kei Mori
Masami Enohara
Jun Tsuruta
Kei Mori
Masami Enohara