Production facilities for the high-precision shaping of aspherics by mechanical processing are described. The production and test equipment are closely linked with each other. This creates optimum conditions for an economical series production.
"The Production Of Aspherical Surfaces By Mechanical Means", Proc. SPIE 0109, Advances in Optical Production Technology I, (14 October 1977); doi: 10.1117/12.955510; https://doi.org/10.1117/12.955510