DECORATIVE LIGHTING FITTING Russian patent published in 1995 - IPC

FIELD: lighting engineering; decorative illumination. SUBSTANCE: used as diffuser in lighting fitting is system of elements providing diffraction of transmitted or reflected light, thus forming a color picture. System of elements has two or more groups or parts of elements, each including hundred or more elements or their parts. Group features translating symmetry in one direction and/or mirror symmetry relative to one or two planes with such an admission that at operation of symmetrization superimposing of contours of elements or their parts leads to partial non-coincidence of figures limited by contours; areas of non-coinciding parts of figures do not exceed in sum 30% of figure area; elements or parts of elements of any group differ from those of adjacent group in size and/or form, distance between elements, orientation of elements of symmetry at limited angular sizes of source. EFFECT: enlarged operating capabilities. 4 dwg