| 摘要 |
The present invention is related to a device useful as a security element comprising first and second LC ink layers representing a graphical object exhibiting, when observed with an appropriate viewing equipment, a three-dimensional appearance, wherein one of said ink layers shows a first colour at a certain viewing angle and is a left-handed circularly polarizing coating or comprises left-handed circularly polarizing pigment, and the other of said ink layers shows the same or another colour at said viewing angle and is a right-handed circularly polarizing coating or comprises right-handed circularly polarizing pigment, said first and second LC ink layers representing a first and a second image corresponding to a pair of stereoscopic projections of said object, characterized in that said first and second images are composed of separate building blocks which are superimposed or can be superimposed. |
