The job was rather difficult. MEKRA LANG AG, a traditional automotive vendor, wanted to get rid of the big mirrors for trucks.
Several experts from electronics, optics (IB/E optics) and mechanics came together to try out what is possible. This was in early 2002 for those who wonder. IB/E designed a hybrid lens consisting of one glass and four plastic aspheres, one with a diffractive surface to get rid of the temperature drift plastic has. The lens had to be rather small to fit into a gas filled housing, waterproof IP65.