The function of the function lighting is: redistribute the flux of the light source.
It is special lighting that usually used in the environment of those moist, corrosive, explosive, flammable etc. Its lampshade also has the function of isolating protection.
Function lighting must meet the requirements of relevant national standards.
The function of the decorating lighting is composed of decorative parts and lighting sources. In addition to the requirements of lighting efficiency and glare prevention, it mainly meets the needs of architecture and environmental art in terms of beautiful shape and light color.
According to the place of use, lighting fixtures can be divided into indoor and outdoor lighting fixtures. The main characteristics of the outdoor lighting fixtures, which differ from the indoor ones, are that they can withstand the influence of outdoor environment, especially rain, wind, humidity and temperature.
Fundamental characteristics: The basic characteristics of lighting lamps are usually expressed by four indexes, such as light distribution curve (light intensity distribution curve), protection Angle and efficiency and controllability.
The intensity vector of light emitted from all sides upwards in the working state of the lamp is drawn on X, Y and Z three-dimensional coordinates in a certain proportion, and then the vector terminals are connected to form a closed light wall (FIG. 1). When the light wall is cut through the plane of the axis, a closed intersection line is obtained on the plane, and the form of the intersection line and coordinate is plotted on the plane, which becomes the light distribution curve of the lamp.The distribution curve is usually drawn with a luminous flux of 1000 lumen from the light source.
