Research On The Principle Of Light Distribution System Based On Microstructure Light Distribution Material

This thesis is devoted to the research on the principle of lighting distribution in lighting engineering with microstructure light distribution material. Through the microstructure light distribution material with LED lamp for two times lighting distribution, the light intensity distribution of LED lamp can be changed in room. Based on the distribution of light intensity, according to the actual conditions and requirements of lighting environment, through the three times lighting distribution with lighting design, and ultimately achieve high efficiency and uniform lighting effect. On the one hand, in this paper, the microstructure diffusing plate as the research object, influence of optical properties on LED lamp with microstructure diffusing plate or not and the microstructure diffusing plate with different optical properties has been studied. To further explore the LED lamps in the microstructure diffusing plate under the effect of the changes of main parameters, luminous flux, light intensity distribution, luminaire efficiency, the lighting distribution principle in LED lighting system with the microstructure lighting distribution material can be realized, and the basis for adjusting parameters for the light diffusing plate to control LED lamp performance can be provided. On the other hand, according to the microstructure light diffusing plate effect on the optical properties of LED lamp, studied the light distribution system application in indoor lighting environment, and put forward a new design method of illumination. The spatial intensity distribution of distance parameter method is based on the intensity distribution of the LED lamp, through adjusting the parameter of the distance in space by orthogonal experiment. Finally, with this new lighting design method, microstructure lighting distribution material LED lamp as the lighting source, the classroom, library and dining room the three typical campus public indoor illuminating engineering case has been studied.1. In this paper, influence of optical properties on LED lamp with microstructure diffusing plate or not and the microstructure diffusing plate with different optical properties has been studied. With the increase of the light diffusing particles, the haze stabled at 90%, the transmittance decreased, the total luminous flux and luminous efficiency of LED lamp decreased. The beam angle decreased 30 degree of LED flat lamp by the microstructure diffusing plate with different light transmittance, the color temperature, color rendering index changed little. The luminous intensity of the lamp in the space influenced by the transmittancy, with the increase of transmittancy, the light intensity increased with the trend of light intensity distribution unchanged, the center of the vertical direction was more significant. Light transmission rate from 63.9% to 82%, the vertical intensity increased from 595.7cd to 696.8cd, increased by 17%. Then the simulation analysis of the LED flat lamp with microstructure diffusing plate or not in indoor illumination indicated that the microstructure diffusing plate was more conducive to luminous emission.2. This paper also studied the lighting design method based on the LED lamp with microstructure light distribution material. Method of utilization factor, unit capacity and simulation by lighting design software which are commonly used was not applicable. According to the characteristics of luminous intensity distribution of the lamp with microstructure light distribution material as the foundation, the distance in the indoor space array as a parameter, the method of orthogonal experiment is simulated by means of DIALux lighting design software, a new method of light intensity distribution with the distance parameter in space has been studied. With this new lighting design method, the efficient, energy-saving advantages of the microstructure light distribution material LED lamps in indoor public lighting could be exerted in the actual process, and achieved good effect of uniform illumination.3. Finally, the classroom, library and dining room the three typical campus public indoor illuminating engineering case has been studied. The illumination situation of the classroom, library and dining room of BUCT was tested, according to the shortcomings of the existing lighting conditions, the improvement scheme of illumination with microstructure light distribution material LED lamps was put forward. Through the method of light intensity distribution with the distance parameter in space, the lighting situation after transformation was simulated by DIALux lighting design software. The simulation results showed that through the transformation, not only reached the average illuminance value, greatly improved the uniformity of illumination, especially the central region of the illumination uniformity could reach more than 90%, but also could significantly reduce the energy consumption, made the lighting power density at a low level, the purpose of efficiency, uniformity and energy conservation was achieved.