Multi-layer star filter

Photos with bright and wonderful star light are always considered as amazing master piece. Only using a very simple star filter can realize this goal. The Star filters can create wonderful dazzling star effects from original point light sources or bright reflections. But all the filters we can see in the online market just have very simple geometry and can’t have a perfect performance when they are made with traditional plastic molding. In contrast to these, we designed a 3-D printed multi-layer