LED路燈透鏡的光學設計及制作工藝研究
[Abstract]:Nowadays, the lighting industry has higher and higher requirements for the design of road lamps and lanterns. The designed lens should not only meet the requirements of "Standard for Urban Road Lighting Design" and "Technical requirements for Energy Saving Certification of Road Lighting Lamps". On the basis of the original road, it is necessary to realize the continuous improvement of the total luminance average value, the longitudinal luminance uniform value and the total illumination uniformity value, so as to reduce the glare value to the pedestrians and vehicle drivers, so as to improve the road safety factor. Reduce accidents caused by road lighting. At present, there are a lot of LED street lamps in China, but the ratio of distance to height of two adjacent lamps is 3.2, 3.5, 3.6, 3.8, 4.0, etc., which limits the arrangement of road lamps and increases the cost of road lighting. Therefore, it is necessary to design a new type of optical lens to expand the application of road lighting technology, further improve the level of LED road lighting, and reduce the cost of road lighting construction. In order to improve the lighting quality of LED street lamp lens and reduce the cost of road lighting, the design scheme of LED street lamp lens with rod distance ratio of 4.2 is studied in this paper. According to the principle of LED light source, the theory of non-imaging optics and the requirement standard of road lighting, the solution of partial differential equation and the trial and error method of designing lens are studied. Using the two methods, the four-lane and six-lane LED street lamps are designed, respectively, which are suitable for four-lane and six-lane lighting. According to the whole scheme, the optical path of the optical system is simulated and the simulation results are analyzed. Trial and error method, that is, through modeling, ray tracing, scene simulation and other analysis structures, if the simulation results do not meet the requirements of road lighting, analyze the cause of the problems, and modify the point coordinates of the model. Finally, the results of light spot, light distribution and scene simulation are obtained. The solution of partial differential equation is that the initial differential equations are established according to Snell's law and edge ray principle, the numerical solution of differential equations is solved by MATLAB programming, and the data of discrete points on free-form surface is imported into Solidworks for modeling. The model is imported into Tracepro software for ray tracing, and the scene is simulated in DIAlux to determine the final structure. In this paper, the optical design and mold design method of LED street lamp lens, the selection and processing technology of mould material, injection molding material and its flow chart are studied. Using two different methods, two lenses were designed for four-lane and six-lane lighting, and the U _ 0 of four-lane lens was 0.64, UI 0.78, TI-8, SR 0.53, Ehav 0.565, CU greater than 0.75, and U0 of four-lane lens was 0.64, UI 0.78, TI-8, SR 0.53, Ehav 0.565. The U0 of the six-lane lens is 0.60, UI 0.76, TI 9, SR 0.78, Ehav 0.650 and CU 0.60. The lens of anhydrous port material was obtained by using hot runner mould, and the product performance was tested. The light intensity curve distribution of the lens met the requirements, and the correctness of the design was verified. The road lighting of the same 100 km can save more than 120 lamps compared with the installation pole distance ratio of 4.0 street lamps, which greatly reduces the lighting cost of the road.
【學位授予單位】:江蘇大學
【學位級別】:碩士
【學位授予年份】:2017
【分類號】:TM923.34
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