Akira Yabe received his BSc in Physics from Tokyo University in 1978. He worked for Fuji Photo Optical (1978–2003). He is a lens design consultant (2004–). His experience of lens design ranges from the cinematography zoom lens to the microlithography lens. He works with his own lens design code. He has unique methods of the optical design, such as prototyping of zoom lenses, global optimization, optimal selection of aspheric surfaces, accurate glass model and cost control, sensitivity control, and determination of tolerances.
Axially asymmetric optical systems treated in this paper contain both freeform surfaces and spheres. In these systems, freeform surfaces need to be allocated at the most effective position. The problem can be elegantly solved with the method of traveling freeform surfaces. The purpose of this paper is to show that the sensitivity control can be included in this design process.
Advanced Optical Technologies is a strictly peer-reviewed scientific journal. The major aim of Advanced Optical Technologies is to publish recent progress in the fields of optical design, optical engineering, and optical manufacturing. Advanced Optical Technologies has a main focus on applied research and addresses scientists as well as experts in industrial research and development.