Publicity display using interplay of light and shade - employs organic glass semi-opaque or transparent mask to control illumination onto specific regions

摘要

The device permits the illumination by interplay of light and shade with motifs or colours all non opaque documents which can be affixed to it and which receive light for any type of luminous source. It consists of a transparent material mask adapted to the format of an original of paper, tissue, glass etc. The mask is made of a semi opaque or transparent material such as organic glass in which windows are cut so as to obtain maximum illumination effects in these particular areas.