Independent of HMIs, cover glass and design there are countless applications for complex technical glass, above all in the optical industry: lenses, prisms, reflectors, light guide elements, piezo carriers made from ZERODUR or recision parts made from quartz glass, that withstand temperatures up to more than 1,000 degrees unscathed.
The challenge with the part in the picture at the left is the high level of accuracy required: The admissible tolerance is just ±0.0095, or ±9.5 µm. The overall tolerance range is therefore about a quarter of the diameter of a normal human hair …