摘要：

A side mirror has an inner edge connected to a car and an outer edge. The front surface of the side mirror is defined by arcs of many circles becoming smaller and smaller in sizes such that the outer edge thereof has a greater curvature than the inner edge; the arcs are orientated in such a manner that every adjacent two thereof have a common tangent line at the joint. The front surface is further defined by arcs of many circles of different sizes such that a lower portion thereof has a greater curvature that an upper portion, the arcs are also orientated such that every adjacent two thereof have common tangent line at the joint. Thus, the part of the side mirror close to the lower edge and the outer edge has increased curvature for enlarging the range of visibility.

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