LUMINAIRE WITH REGULATED LIGHT DISTRIBUTION Russian patent published in 1997 - IPC

FIELD: lighting engineering. SUBSTANCE: luminaire uses a light source installed in a translucent diffuser with a neck, reflector consisting of a set of separate bevels in the form of spherical lines with two holes at the ends, the bevels with their end holes are fitted in interference with an outward thrust on the support pins, and due to elastic forces additionally press them to the diffuser bearing surface from the inside. The supports are made of elastic material, for instance, in the form of vacuum suction cups. When it is necessary to change the light distribution, it is enough to remove the ends of the respective bevels from the pins, turn the symmetry planes of the bevels through the required angle and reinstall the bevels in the new position. To enhance the reliability, the bevels may be additionally secured, for example, by means of a threaded pair, the support link serving as one of its links. Due to the fact that the bevels are positioned inside the reflector, their reflecting surface does not foul and is not subjected to harmful effect of environment. EFFECT: enhanced stability of luminaire light characteristics. 3 cl, 13 dwg