Study on segmented reflector lamp design based on error analysis

This paper discusses the basic principle and design method for car lamp light distribution, introduces an important development: high efficient and flexible car lamp with reflecting light distribution—the segmented reflector (multi-patch) car lamp, and advances a design method for a segmented reflector based on error analysis. It establishes an error-analyzing model for a segmented reflector according to the analysis of error in the production process of the segmented reflector. Based on this error-analyzing model and by the use of analyzing software developed for segmented reflector light distribution, it reasonably considers reflector errors in manufacturing, such as reflector surface spray-painting and the plating of aluminum. Thus it can provide the shapes of reflector patches for a segmented reflector, and direct the plan of the production process efficiently. The method advanced in this paper has been applied successfully to develop segmented reflector lamps for several types of cars and has been used to a great extent in the factory.