spotlight. Generally, it can aim in any direction and has a structure that is not affected by climatic conditions. Mainly used in large-area operation sites, building outlines, stadiums, overpasses, monuments, parks and flower beds, etc. Therefore, almost all large-area lighting fixtures used outdoors can be regarded as floodlights. The angle of the projecting light beam is wide or narrow, and the range of variation is between 0° and 180°. Among them, the narrow beam is called a searchlight. Spotlights can be divided into four types: rotationally symmetrical, two symmetrical planes, one symmetrical plane, and asymmetrical according to the symmetry of the intensity distribution of the outgoing beam.www.szbjhkj.com