| Summary: | 碩士 === 國立虎尾科技大學 === 光電與材料科技研究所 === 98 === Currently vehicles still adopt incandescent lamps, halogen lamps, and HID as their major lighting sources. But at international auto exhibitions, we may find auto makers have already mounted LED lamps on their concept cars for demonstration in order to draw consumers’ eye. As a result, this study designed an Economic Commission for Europe Regulation 19-conforming front fog lamp using LED as a light source. The reflector had a curve surface with different upper and lower curvatures. The two sides of the curve surface with different upper and lower curvatures demonstrated an outward-leaning angle of 8 degrees with the lamp opening. The purpose was to control the distribution length of the light. The curve surface was designed with different upper and lower curvatures in that the upper curve surface was to reflect the upward-emitting beam downward, and that the lower curve surface was to translate, through reflection, the downward-emitting beam into a parallel one, by adapting the light which originally concentrated on the center to a light which concentrated below the horizontal line. However, some emitted light still could not be completely gathered through the reflection cover. For this reason, through a lens with different upper and lower curvatures, the emitted light which originally could not be collected was effectively collected for use to increase the utility of the light source.
Key word: LED、front fog lamp
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