OPTIMIZED PRODUCTION OF COMPLEX SHAPED OPTICAL COMPONENTS VIA PRESICION GLASS MOLDING

摘要

The verification of a FEA simulation is shown in Figure 5. It is a molding process simulation of a plane-concave lens with an outer diameter of 18 mm and a form accuracy of 2 μm on the non-spherical surface. The insert material is tungsten carbide and the glass is crown glass B 270 of Schott AG. The comparison of the simulated and the measured glass lens geometry shows that a large form deviation up to about 12 μm is achieved in both the measurement and the simulated results, and the difference between these two curves is less than 2 μrn. So the FEA simulation can be used for the mold design to reduce the mold making iteration and also to eliminate the pre molding.