设计了一款折叠式微型数码镜头。该镜头的 F数为 3，视场角为 52°，总长度为 6.67 mm。该系统具有良好的成像品质。子午和弧矢 MTF曲线在 0.73视场、空间频率为 285 lp/mm值大于 0.3，系统的畸变约为 -1.3%，该系统在最大视场处的相对照度约为 70%左右，横向色差在 0.9视场附近最大，约为 0.42 μm，小于单个像素的尺寸。

The folded miniature digital lens with F-number of 3, field of view of 52°and total length of 6.67 mm is designed. The design result shows that the lens system has the excellent image quality. The meridional and sagittal modulation transfer function (MTF) curves at 0.73 field of view, spatial frequency of 285 lp/mm are more than 0.3. The distortion is about -1.3% and the relative illumination at max field of view is about 70%. The later. al color is about 0.42 μm, which is less than the pixel size.