反射镜真的光滑吗？

激光反射镜看起来非常光滑，但在PicoStation三维光学轮廓仪的镜头下，事实并非如此。分享几组有意思的图片！

What does the smooth surface of a laser mirror look like? Surprisingly, it's not as smooth as it seems when viewed through our Picostation 3D profiler. Check out some pictures measured by our Picostation!