摘要 |
A decorative panel (1) comprises a transparent front substrate (2) having a foreground image printed thereon, the foreground image having varying transparency across its area. Behind the foreground image, is at least one layer (3) of optically reflective or absorptive material which has a reflectance or absorptance that is changeable in response to an external stimulus and which transmits incident light that is not reflected or absorbed. Behind the at least on layer of reflective material, is a background layer (4) on which light transmitted by the at least one layer of optically reflective or absorptive material is incident and which is not transparent. |