Freeform correction for molding high precision plane optical surfaces

摘要

The poster will describe an innovative process chain for manufacturing high precision plane optical surfaces realised with injection molding by correction of the asymmetric polymer shrinkage with a freeform surface at the tool insert. This process minimizes the form deviation at the molded plane optical surface from 12,6 μm down to about 1 μm p-v at the optical active area which is an order if magnitude.