Some aspects of the optical design of high-speed wide-angle lenses are discussed. Particular attention is paid to the problems of designing for the use of common parts as a means of significant cost reduction of manufacturing in commercial quantities. 24mm f/2.0 and 28mm f/2.0 Vivitar wide-angle lenses covering the 35mm format are used in the discussion as examples.
"The Design Of A Family Of Wide Angle Lenses Having A Commonality Of Parts", Proc. SPIE 0147, Computer-Aided Optical Design, (1 December 1978); doi: 10.1117/12.956635; https://doi.org/10.1117/12.956635