Common led floodlight classification introduction

The common types of LED floodlights are as follows:

1. Rotational symmetry

The luminaire adopts a rotationally symmetric reflector, and the axis of symmetry of the light source with rotationally symmetric light distribution is installed along the axis of the reflector. The iso-intensity curves of such lamps are concentric circles. When this type of flood light is illuminated by a single lamp, an elliptical light spot is obtained on the illuminated surface, and the illumination is uneven; but when multi-light illumination is used, the light spots are superimposed on each other, which can produce a satisfactory lighting effect. For example, hundreds of rotationally symmetrical floodlights are commonly used in stadiums, which are installed on high towers around the stadium to obtain high illumination and high uniformity lighting effects.

2. Two symmetrical planes

The equal intensity curve of this type of floodlight has two symmetry planes. Most of the lamps use symmetrical cylindrical reflectors, and the linear light sources are installed along the axis of the cylindrical surface.

3. A symmetrical plane

The iso-intensity curve of a luminaire has only one plane of symmetry. The luminaire uses asymmetric cylindrical reflectors or symmetrical cylindrical reflectors plus grids that limit light. The most typical is the sharp cut-off block retraction light distribution. This kind of light intensity distribution single lamp can obtain a relatively satisfactory illuminance distribution.

4. Asymmetrical shape

The iso-intensity curve of this type of luminaire has no plane of symmetry. It mainly uses mixed light lamps of different types of light sources with large differences in light intensity distribution and special lamps designed according to the specific lighting requirements of the place of use.