Variable optical illumination system suitable for DMD projection vehicle lamp module

According to the variable optical lighting system suitable for the DMD projection car lamp module, the areas and the shapes of different irradiation areas on a DMD chip are obtained by changing the position of an optical element, and therefore projection output of different brightness on a road surface or a target surface is achieved; a part of optical lenses in the illumination lens system can move back and forth or rotate along the axial direction, so that the focal length is changed, light spots with different sizes are generated on the DMD chip, for example, the brightness is higher if the light spots are small, the system can be applied to projection of some bright patterns on a road surface or a wall, the patterns do not need to be large, and the projection effect is good. And the changed light is very bright. 本实用新型提供一种适用于DMD投影车灯模组的可变光学照明系统，通过改变光学元件的位置，来获取在DMD芯片上不同的照射区域的面积和形状，从而达到不同亮度的投影输出在路面或者目标面上；照明镜头系统中的一部分的光学镜片能够前后移动或者是延轴向旋转，使得焦距产生变化，在DMD芯片上产生不同的尺寸的光斑，比如把光斑照的小，亮度就会更高，可以运用到需要在路面或者墙上投影一些需要很亮的图案，图案不需要很