Abstract: In order to achieve efficient and uniform road lighting, an intelligent lighting projection lens design technique based on achromatic prisms is proposed in this paper. Using prism deformation function, the vertical axis perspective of the body is compressed to a certain extent, transforming the circular input light into an elliptical output light. The pixel size of the display unit is reasonably and effectively utilized. By changing the rotation angles and positions of the two achromatic prisms, a projection with a continuously variable compression ratio can be achieved. The viewing angle requirements for the meridional and sagittal planes in road lighting are meet by utilizing a combination of projection lens systems with different compression ratios. This provides an effective way to achieve efficient interactive road lighting.

Key words: achromatic prism; pixelation; interactive lighting; intelligent lighting

摘要： 为了实现高效均匀的道路照明，文章提出了一种像素化显示的基于消色差棱镜的智能 车灯投影镜头设计方法。利用棱镜变形功能，对车身垂直方向的视角进行一定程度的压缩， 将圆形的输入光变成椭圆形的输出光，合理有效地利用了显示单元的像素尺寸，通过改变棱 镜组前后两个棱镜的旋转角度及位置，可以实现压缩比连续变化的投影画面。通过不同压缩 比投影镜头系统的组合使用来满足道路照明子午面和弧矢面的视角要求，有效地提高了路面 有效照明范围内的照度，为实现高效交互道路照明提供了一种有效的途径。

关键词: 消色差棱镜；像素化；交互照明；智能车灯