LIGHTING FIXTURE Russian patent published in 2004 - IPC

FIELD: searchlight-type lighting fixtures, applicable for production of underwater lighting fixtures of the searchlight type, automobile head lamps inclusive. SUBSTANCE: the lighting fixture has a light source, main reflector with a concave surface and a lens projection system, the main reflector with concave surface and the lens projection system are optically aligned relative to each other, and the light source is positioned between the reflector and the lens projection system and is optically aligned with them. Besides, the main prereflector collecting lens is installed between the light source and the main reflector, the concave surface of the main reflector is made in the form of a ball segment, and the mentioned prereflector collecting lens has a focal distance exceeding the focal distance of the main reflector by 1.25 to 2.0 times, it diameter equal the diameter of the main reflector or exceeds it, and this lens is positioned at such a distance from the main reflector, which does not exceed half the distance between the main reflector and the light source. EFFECT: enhanced intensity of the light beam. 5 cl, 2 dwg