| 汽车用光源建模与照度计算方法研究 |
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| 引用本文： | 吉桂琴,刘海成,刘柏林.汽车用光源建模与照度计算方法研究[J].黑龙江工程学院学报,2014(3):47-50. |
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| 作者姓名： | 吉桂琴 刘海成 刘柏林 |
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| 作者单位： | 黑龙江工程学院电气与信息工程学院,黑龙江哈尔滨150050 |
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| 摘 要： | 文中研究适用于汽车前照灯光源的建模与照度计算方法，讨论测试屏上的照度计算原理，根据实际光源光束的特点分析，采用线光源近似模拟灯丝，建立点光源的抽样光线分布算法模型。将反射器导入照明系统设计分析软件LightTools，并将反射器性能在计算机上进行评估，给出自由曲面反射器在使用点光源和线光源进行非顺序光路追迹的运算实例。照度分析结果验证了采用线光源对灯丝进行建模方法以及针对自由曲面反射器的光路追迹算法的准确性。
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| 关 键 词： | 光源建模 照度 点光源 测试屏 |
Research of light source modeling method and the illumination calculation of automobile lamp |
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| JI Gui-qin,LIU Hai-cheng,LIU Bai-lin.Research of light source modeling method and the illumination calculation of automobile lamp[J].Journal of Heilongjiang Institute of Technology,2014(3):47-50. |
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| Authors: | JI Gui-qin LIU Hai-cheng LIU Bai-lin |
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| Affiliation: | (College of Electrical Information Engineering, Heilongjiang Institute of Technology, Harbin 150050,China) |
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| Abstract: | It presents the modeling method of automobile headlamps source, and discusses the test screen illumination calculation principle. According to the characteristics of the actual light source, the line source is adopted as an approximate simulation of filament. A sampling distribution of light algorithm is proposed of point light source. The reflector is imported into LightTools lighting system design and analysis software. The performance of the reflector is evaluated in the computer. The calculation examples is given of freeform reflector in the use of point source and line source of non compliance ray tracing. Illumination analysis results verify the accuracy of the source modeling. |
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| Keywords: | light source modeling illumination point source test screen |
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