Abstract
Fresnel lens made of glass or polymers are commonly manufactured by hot pressing and/or injection molding using high precision molds. In the fabrication of the molds, nano-precision polishing is essential as the final process. In this paper, the linear miniature V-groove on the oxygen free copper plate was polished using the novel MCF (magnetic compound fluid) slurry. The MCF slurry is produced by mixing carbonyl-iron-particles (CIPs), abrasive grains and α-cellulose whenever necessary in a water-based magnetic fluid (MF). The experimental results indicate that (1) the nano-precision surface was successfully obtained after MCF polishing; (2) the surface roughness and form accuracy were diverse at different areas in the polishing zone; (3) the surface roughness was improved whereas the form accuracy deteriorated monotonously with the polishing time.
