Magnetic Field-assisted Mass Polishing of Optical Glasses

In response to the growing demand for optical glass across various industries, achieving ultra-smooth surfaces and precise form accuracy is crucial. Traditional ultra-precision polishing processes, which handle workpieces individually, suffer from low production efficiency and high costs. Additionally, existing mass finishing methods are ill-suited for optical glasses. To address this gap, we propose Magnetic Field-Assisted Mass Polishing (MAMP) as an efficient and cost-effective solution. Our experiments on ground BK7 optical glass demonstrate that MAMP enables simultaneous polishing of multiple lenses, achieving nano/sub-nano metric surface roughness and micrometer-scale form maintainability. This method exhibits the potential to emerge as a competitive approach for polishing small optics.