Rafael G González-Acuña studied industrial physics engineering at the Tecnológico de Monterrey gaining a master’s degree in optomechatronics at the Optics Research Center, A.C., and studied his PhD at the Tecnológico de Monterrey. His doctoral thesis focuses on the design of free spherical aberration lenses. Rafael has been awarded the 2019 Optical Design and Engineering Scholarship by SPIE and he is the co-author of three IOP books. Héctor A Chaparro-Romo, Electronic Engineer with Master's studies in Computer Science specialised in scientific computation and years of experience in optics research and applications, he is co-author of the solution to the problem of designing bi-aspheric singlet lenses free of spherical aberration. Héctor is the co-author of the IOP book, Analytical lens design.