LIGHTING ARRANGEMENT WITH SLOTTED LIGHT GUIDE Russian patent published in 1994 - IPC

FIELD: lighting engineering. SUBSTANCE: arrangement has chamber with main light source, hollow light guide 1 with light-reflecting surface, end element 2, and optical slot 3. Provided inside the light guide is additional light source 4 attached to movable current-conducting carriage 5 positioned at outer side of the light guide in box 6. Current leads 7 of electrical supply system 8 are laid lengthwise of the box. EFFECT: improved performance characteristics. 2 cl, 3 dwg